How long is the flight from Ottawa to London?

Departing from Ottawa to London will take you 10h 50m. The distance between Ottawa and London is about 5375 km. Both multi-stop and direct flights can be found to your destination and back.

What are the cheapest airlines flying from Ottawa to London round-trip?

Our cheapest airline available from Ottawa to London is Virgin Atlantic. Our recent data shows that you can find tickets from as low as C$ 488 on this airline. Additional options worth looking into are Air Transat and Air France, starting at C$ 690 and C$ 785 round-trip. You may be able to fly from Ottawa to London for 52% less than the average price by searching for these airlines.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 mm per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from Ottawa to London?

Most travellers choose Ottawa - London Heathrow, Ottawa - London Gatwick or Ottawa - London City when deciding on the best route from Ottawa to London.

What are the cheapest flights from Ottawa to London?

The cheapest flight price from Ottawa to London is C$ 769. On average you can expect to pay C$ 1,526. The most popular route, (Ottawa - London Heathrow), can usually be booked for C$ 986.

What are the most reliable airlines from Ottawa to London?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Ottawa to London on time: Croatia Airlines (100%), TAP AIR PORTUGAL (89%), United Airlines (75%).

What are the most popular airlines that fly from Ottawa to London?

Before booking your flight from Ottawa to London check out the most popular airlines for this route: Air Canada, Air Transat or Lufthansa.

What airport do you fly from for flights from Ottawa to London?

Ottawa (YOW) is the airport you will fly out of if you book a flight from Ottawa to London. You should not have trouble finding flights to London from Ottawa; the airport handles an average of 1 outbound flight to London per day. You should also have plenty of airline options to choose from since 5 airlines have flights from the Ottawa airport to London. It is only a 10.6 km journey to Ottawa (YOW) from Ottawa’s city centre.

Can I find deals for flights from Ottawa to London that include hotel bookings?

Yes. In addition to deals on Ottawa to London flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ottawa to London?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to London.

Can I find deals for business class flights from Ottawa to London?

Yes. Cheapflights offers flight deals from Ottawa to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

C$ 474+ Cheap Flights from Ottawa to London

Cheapflights Tip: The best prices from Ottawa to London are usually found in September or February, booked 74 days in advance, depart on a Tuesday or Friday and return on a Sunday

Cheap flight deals from Ottawa to London

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Ottawa to London
Explore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 November 2026.

Tue 8/125:40 p.m. -

2 stops18h 00m

Tue 15/126:10 a.m. -

2 stops17h 35m

Deal found 8/11C$ 996

Mon 23/115:40 p.m. -

2 stops21h 00m

Mon 30/117:00 a.m. -

2 stops20h 32m

Deal found 7/11C$ 999

Mon 7/122:55 p.m. -

2 stops20h 45m

Mon 14/127:00 a.m. -

2 stops20h 32m

Deal found 7/11C$ 1,006

Mon 23/115:40 p.m. -

2 stops42h 10m

Thu 26/111:50 p.m. -

2 stops33h 55m

Deal found 9/11C$ 1,037

Thu 12/112:00 p.m. -

2 stops26h 15m

Thu 19/117:15 a.m. -

2 stops15h 05m

Deal found 8/11C$ 1,054

Sun 22/1110:50 a.m. -

2 stops24h 50m

Thu 26/116:10 p.m. -

3 stops24h 57m

Deal found 5/11C$ 1,061

Fri 27/112:55 p.m. -

2 stops19h 10m

Sun 6/127:45 a.m. -

2 stops31h 02m

Deal found 6/11C$ 1,068

Sat 5/125:40 p.m. -

2 stops15h 50m

Sat 12/126:00 a.m. -

3 stops20h 52m

Deal found 6/11C$ 1,088

Mon 7/129:10 a.m. -

2 stops18h 55m

Mon 14/128:50 a.m. -

2 stops15h 40m

Deal found 7/11C$ 1,089

Wed 2/1210:05 a.m. -

2 stops17h 00m

Wed 9/129:50 a.m. -

2 stops17h 00m

Deal found 7/11C$ 1,093

Tue 17/112:00 p.m. -

2 stops37h 05m

Fri 20/117:00 a.m. -

2 stops20h 32m

Deal found 9/11C$ 1,115

Thu 3/129:10 a.m. -

2 stops17h 55m

Sat 6/27:50 a.m. -

2 stops16h 40m

Deal found 7/11C$ 1,116

Best flights from Ottawa to London
Discover carefully curated flight deals from Ottawa to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 10 November 2026.

Thu 4/31:45 p.m. -

1 stop15h 00m

Fri 12/311:40 a.m. -

1 stop15h 26m

Deal found 9/11C$ 975

Wed 3/35:10 p.m. -

1 stop10h 50m

Tue 9/310:00 a.m. -

1 stop10h 00m

Deal found 8/11C$ 1,230

Sat 21/114:46 p.m. -

1 stop32h 09m

Mon 7/1210:25 a.m. -

1 stop32h 44m

Deal found 9/11C$ 1,230

Wed 10/25:10 p.m. -

1 stop17h 35m

Thu 18/24:45 p.m. -

1 stop27h 15m

Deal found 9/11C$ 1,250

Mon 8/35:10 p.m. -

2 stops12h 35m

Sat 13/36:20 a.m. -

1 stop13h 40m

Deal found 9/11C$ 1,278

Sat 21/115:30 a.m. -

2 stops45h 15m

Tue 8/1211:20 a.m. -

2 stops41h 20m

Deal found 9/11C$ 1,631

Fri 5/35:45 p.m. -

1 stop11h 00m

Mon 15/311:40 a.m. -

1 stop17h 01m

Deal found 9/11C$ 1,012

Sun 22/115:10 p.m. -

1 stop17h 35m

Sun 29/1110:00 a.m. -

1 stop10h 00m

Deal found 5/11C$ 1,233

Fri 20/115:25 p.m. -

1 stop10h 35m

Thu 3/124:45 p.m. -

1 stop27h 20m

Deal found 6/11C$ 1,253

Fri 20/115:25 p.m. -

1 stop12h 05m

Thu 3/1210:00 a.m. -

2 stops18h 40m

Deal found 6/11C$ 1,281

Sun 28/36:20 a.m. -

1 stop19h 25m

Mon 12/49:30 a.m. -

2 stops19h 12m

Deal found 7/11C$ 1,301

Sun 28/35:10 p.m. -

1 stop17h 50m

Fri 2/49:55 a.m. -

1 stop10h 05m

Deal found 7/11C$ 1,242

Tue 9/35:45 p.m. -

1 stop11h 00m

Sun 14/311:40 a.m. -

1 stop24h 31m

Deal found 9/11C$ 1,278

Wed 24/310:30 a.m. -

2 stops18h 40m

Mon 12/49:30 a.m. -

1 stop17h 26m

Deal found 7/11C$ 1,301

Fri 26/36:10 p.m. -

1 stop10h 50m

Fri 2/49:55 a.m. -

1 stop10h 05m

Deal found 7/11C$ 1,242

Thu 1/45:10 p.m. -

2 stops12h 35m

Sun 4/48:55 a.m. -

1 stop11h 05m

Deal found 5/11C$ 1,397

Sat 27/32:48 p.m. -

1 stop12h 32m

Mon 12/412:15 p.m. -

2 stops14h 41m

Deal found 7/11C$ 1,301

Mon 1/25:15 p.m. -

1 stop10h 45m

Sun 28/210:00 a.m. -

1 stop10h 00m

Deal found 6/11C$ 1,244

Tue 30/31:45 p.m. -

1 stop16h 00m

Mon 5/412:40 p.m. -

1 stop16h 57m

Deal found 5/11C$ 1,438

Tue 27/45:10 p.m. -

1 stop17h 50m

Thu 6/59:55 a.m. -

1 stop10h 05m

Deal found 8/11C$ 1,267

Fri 1/16:15 a.m. -

2 stops19h 25m

Fri 15/19:10 a.m. -

1 stop33h 01m

Deal found 7/11C$ 1,490

Wed 14/45:15 p.m. -

2 stops12h 30m

Thu 29/46:30 a.m. -

2 stops13h 30m

Deal found 9/11C$ 1,419

Sun 22/115:10 p.m. -

2 stops12h 35m

Sun 29/116:30 a.m. -

2 stops13h 30m

Deal found 5/11C$ 1,448

Sat 13/35:10 p.m. -

2 stops12h 35m

Sat 20/34:10 p.m. -

1 stop11h 30m

Deal found 7/11C$ 1,510

Find flight deals from Ottawa to London

Round-trip from	C$ 906
One-way from	C$ 474
Popular in	December
Cheapest in	September
Average price	C$ 1,095
Good round-trip deal	C$ 1,240 or less
Good one-way deal	C$ 991 or less

Air Transat
13/4-19/4
2 total stops
37h 07m total
Ottawa to London

Search Deals

28/1-31/12
1 total stop
36h 55m total
Ottawa to London

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (C$ 123 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 40 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in November 2026

Search Deals

Price to beat on a round-trip flight from Ottawa to London (LON).

Search Deals

Price to beat on a one-way flight from Ottawa to London (LON).

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaLondon

YOW Ottawa - LGW London Gatwick

YOWLGW

Ottawa

Wed 14/4

5:30 a.m.-6:35 p.m.

2 stops32h 05m

London Gatwick

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 499

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Wed 27/1

7:00 a.m.-12:50 p.m.

2 stops24h 50m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 505

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Sat 5/12

6:55 p.m.-12:50 p.m.

1 stop36h 55m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 519

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Fri 26/3

2:00 p.m.-9:05 a.m.

2 stops15h 05m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 578

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Wed 3/3

2:00 p.m.-9:05 a.m.

2 stops14h 05m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 594

OttawaLondon

YOW Ottawa - LGW London Gatwick

YOWLGW

Ottawa

Wed 13/1

5:30 a.m.-3:05 p.m.

2 stops28h 35m

London Gatwick

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 619

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Mon 12/4

6:55 p.m.-12:05 p.m.

1 stop36h 10m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 619

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Mon 23/11

10:00 a.m.-9:05 a.m.

2 stops18h 05m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 635

OttawaLondon

YOW Ottawa - LHR London Heathrow

YOWLHR

Ottawa

Sun 21/2

12:10 p.m.-9:05 a.m.

2 stops15h 55m

London Heathrow

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 642

OttawaLondon

YOW Ottawa - LGW London Gatwick

YOWLGW

Ottawa

Wed 27/1

6:10 a.m.-9:15 p.m.

2 stops34h 05m

London Gatwick

Wed 31/12

12:00 a.m.-6:00 p.m.

Nonstop0h 00m

C$ 660

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 41 resultsSorted by cheapest first

...

Best time to book a flight from Ottawa to London

Have a flexible travel schedule? Discover the best time to fly to London from Ottawa with our price prediction graph.

YOW-LON

YOW-LHR

YOW-LGW

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ottawa to London

YOW-LON

YOW-LHR

YOW-LGW

What is the cheapest month to book a flight from Ottawa to London?

Currently, September is the cheapest month in which you can book a flight from Ottawa to London (average of C$ 851). Flying from Ottawa to London in December is currently the most expensive (average of C$ 1,432). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YOW to LON?

When flying from Ottawa to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Ottawa to London?

Airfare is below average for this route at the moment.

Ottawa to London flights typically cost between C$ 941 and C$ 1,228 in April.
The cheapest round-trip price found within the last 5 days was C$ 906 on Air Transat (13 Apr-19 Apr).

What’s the top layover airport for flights from Ottawa to London?

Toronto (YYZ) – chosen by Cheapflights users on 35% of one-stop itineraries from Ottawa to London on Cheapflights.

What’s the cheapest layover airport for flights from Ottawa to London?

Toronto (YYZ) is the most affordable 1-stop option, with an average round-trip price of C$ 850.

What’s the fastest layover option from Ottawa to London?

Flights via Montreal (YUL) have the shortest average one-way travel time for 1-stop routes: 9h 01m.

Which airport typically offers the quickest layover for flights from Ottawa to London?

Flights via Montreal (YUL) offer the fastest connection on this route, with an average layover time of 1h 45m.

How often are flights from Ottawa to London delayed?

About 28% of weekly flights between Ottawa and London have experienced delays in the past year, with the average delay time being 132 minutes.

What is the most punctual flight time for Ottawa to London flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ottawa to London flights?

Over the past year, Air Transat has had the lowest number of delays on this route, with just 20% of flights being delayed.

How far ahead should I book a flight from Ottawa to London?

Booking 44 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ottawa to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing London

Check out reviews from past customers who have flown with Porter Airlines,Air Transat, andVirgin Atlantic from Ottawa to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

468 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.

Porter Airlines

8.0

Very good

468 reviews

Porter Airlines

8.0

Very good

468 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Air Transat

7.7

Good

585 reviews

Porter Airlines

8.0

Very good

468 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Virgin Atlantic

7.5

Good

698 reviews

Porter Airlines

8.0

Very good

468 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Air Canada

7.1

Good

11,881 reviews

Porter Airlines

8.0

Very good

468 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Lufthansa

6.8

Okay

8,289 reviews

Porter Airlines

8.0

Very good

468 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Related info for your journey

What airport do you fly from for flights from Ottawa to London?
Ottawa (YOW) is the airport you will fly out of if you book a flight from Ottawa to London. You should not have trouble finding flights to London from Ottawa; the airport handles an average of 1 outbound flight to London per day. You should also have plenty of airline options to choose from since 5 airlines have flights from the Ottawa airport to London. It is only a 10.6 km journey to Ottawa (YOW) from Ottawa’s city centre.
How long is the flight from Ottawa to London?
Departing from Ottawa to London will take you 10h 50m. The distance between Ottawa and London is about 5375 km. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines flying from Ottawa to London round-trip?
Our cheapest airline available from Ottawa to London is Virgin Atlantic. Our recent data shows that you can find tickets from as low as C$ 488 on this airline. Additional options worth looking into are Air Transat and Air France, starting at C$ 690 and C$ 785 round-trip. You may be able to fly from Ottawa to London for 52% less than the average price by searching for these airlines.
What are the most popular routes from Ottawa to London?
Most travellers choose Ottawa - London Heathrow, Ottawa - London Gatwick or Ottawa - London City when deciding on the best route from Ottawa to London.
What are the most reliable airlines from Ottawa to London?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Ottawa to London on time: Croatia Airlines (100%), TAP AIR PORTUGAL (89%), United Airlines (75%).
What are the cheapest flights from Ottawa to London?
The cheapest flight price from Ottawa to London is C$ 769. On average you can expect to pay C$ 1,526. The most popular route, (Ottawa - London Heathrow), can usually be booked for C$ 986.
Can I find deals for flights from Ottawa to London that include hotel bookings?
Yes. In addition to deals on Ottawa to London flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ottawa to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to London.
Can I find deals for business class flights from Ottawa to London?
Yes. Cheapflights offers flight deals from Ottawa to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Ottawa to London?
Currently, September is the cheapest month in which you can book a flight from Ottawa to London (average of C$ 851). Flying from Ottawa to London in December is currently the most expensive (average of C$ 1,432). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Gatwick

Romford

Twickenham

Ilford

Bromley

Sutton

Luton

Kingston upon Thames

Slough

Marlow

Cobham

Hounslow

Wembley

Watford

High Wycombe

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Fly from Ottawa to London on these airlines

Air Canada flights from Ottawa to London

Air Transat flights from Ottawa to London

Lufthansa flights from Ottawa to London

Top 5 airlines flying from Ottawa to London

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	CheapestC$ 488	AverageC$ 952	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Air Transat	CheapestC$ 690	AverageC$ 815	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
Air France	CheapestC$ 785	AverageC$ 1,048	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Air Canada	CheapestC$ 915	AverageC$ 1,151	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Lufthansa	CheapestC$ 933	AverageC$ 1,157	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights

Fly with Cheapflights

How does Cheapflights help users find flights from Ottawa to London?

Cheapflights helps you search for flights from Ottawa to London via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ottawa to London?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ottawa to London for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Ottawa to London with no change fees?

Need flexible booking options for your flight to London from Ottawa? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ottawa to London become cheaper?

Yes! Start tracking prices for Ottawa to London flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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Cheap flights from Ottawa to London from C$ 474

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ottawa to London

Cheapest flights from Ottawa to LondonExplore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 November 2026.

Explore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 November 2026.

Best flights from Ottawa to LondonDiscover carefully curated flight deals from Ottawa to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 10 November 2026.

Discover carefully curated flight deals from Ottawa to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 10 November 2026.

Direct flights from Ottawa to LondonExplore direct flight options from Ottawa to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 November 2026.

Explore direct flight options from Ottawa to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 November 2026.

Last-minute flights from Ottawa to LondonDiscover last-minute flight deals from Ottawa to London. Data last updated 10 November 2026 and is based on user searches.

Discover last-minute flight deals from Ottawa to London. Data last updated 10 November 2026 and is based on user searches.

One-way flights from Ottawa to LondonSearch for one-way flight options from Ottawa to London. Find affordable one-way fares based on user searches. Data last updated 10 November 2026.

Search for one-way flight options from Ottawa to London. Find affordable one-way fares based on user searches. Data last updated 10 November 2026.

Find flight deals from Ottawa to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ottawa to London that are best for you.

Best time to book a flight from Ottawa to London

Have a flexible travel schedule? Discover the best time to fly to London from Ottawa with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from Ottawa to London?

What is the cheapest time of day to fly from YOW to LON?

Find hourly flight availability from Ottawa to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 November 2026.

When flying from Ottawa to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Ottawa to London?

Airfare is below average for this route at the moment.

Ottawa to London flights typically cost between C$ 941 and C$ 1,228 in April.The cheapest round-trip price found within the last 5 days was C$ 906 on Air Transat (13 Apr-19 Apr).

What’s the top layover airport for flights from Ottawa to London?

Share of one-stop round-trip flights from Ottawa to London chosen by Cheapflights users in the past 12 months, using the same layover each way.

Toronto (YYZ) – chosen by Cheapflights users on 35% of one-stop itineraries from Ottawa to London on Cheapflights.

What’s the cheapest layover airport for flights from Ottawa to London?

Average round-trip fare for 1-stop flights from Ottawa to London, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Toronto (YYZ) is the most affordable 1-stop option, with an average round-trip price of C$ 850.

What’s the fastest layover option from Ottawa to London?

Shortest average travel time for 1-stop one-way flights from Ottawa to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Montreal (YUL) have the shortest average one-way travel time for 1-stop routes: 9h 01m.

Which airport typically offers the quickest layover for flights from Ottawa to London?

Average layover duration for 1-stop one-way flights from Ottawa to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Montreal (YUL) offer the fastest connection on this route, with an average layover time of 1h 45m.

How often are flights from Ottawa to London delayed?

About 28% of weekly flights between Ottawa and London have experienced delays in the past year, with the average delay time being 132 minutes.

What is the most punctual flight time for Ottawa to London flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ottawa to London flights?

Over the past year, Air Transat has had the lowest number of delays on this route, with just 20% of flights being delayed.

How far ahead should I book a flight from Ottawa to London?

Booking 44 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ottawa to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing London

Check out reviews from past customers who have flown with Porter Airlines,Air Transat, andVirgin Atlantic from Ottawa to London to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Ottawa to London?

How long is the flight from Ottawa to London?

What are the cheapest airlines flying from Ottawa to London round-trip?

What are the most popular routes from Ottawa to London?

What are the most reliable airlines from Ottawa to London?

What are the cheapest flights from Ottawa to London?

Can I find deals for flights from Ottawa to London that include hotel bookings?

How can I find direct flights from Ottawa to London?

Can I find deals for business class flights from Ottawa to London?

What is the cheapest month to book a flight from Ottawa to London?

Travelling to a place near London?

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Fly from Ottawa to London on these airlines

Choose from the following airlines for your flight from Ottawa to London. Flights are based on user searches made on Cheapflights and were last updated on 10 November 2026.

Alternative routes for Ottawa to London

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Complete your trip

Complete your trip to London by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to England

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Search flights from Ottawa to London by cabin class

Cheapest flights from Ottawa to London
Explore the most affordable flight options available from Ottawa to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 November 2026.

Best flights from Ottawa to London
Discover carefully curated flight deals from Ottawa to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 10 November 2026.

Direct flights from Ottawa to London
Explore direct flight options from Ottawa to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 November 2026.

Last-minute flights from Ottawa to London
Discover last-minute flight deals from Ottawa to London. Data last updated 10 November 2026 and is based on user searches.

One-way flights from Ottawa to London
Search for one-way flight options from Ottawa to London. Find affordable one-way fares based on user searches. Data last updated 10 November 2026.

Ottawa to London flights typically cost between C$ 941 and C$ 1,228 in April.
The cheapest round-trip price found within the last 5 days was C$ 906 on Air Transat (13 Apr-19 Apr).