Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from London to Ottawa from C$ 381

LON — YOW
5 Dec — 12 Dec1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Ottawa are usually found in June or September, booked 54 days in advance, depart on a Sunday or Friday and return on a Friday

Cheap flight deals from London to Ottawa

Enter your travel dates to find the best prices.

Cheapest flights from London to Ottawa

Thu 10/124:20 p.m. -
1 stop32h 07m
Sat 12/126:10 p.m. -
2 stops21h 50m
Deal found 3/11C$ 936
Thu 19/119:00 a.m. -
2 stops31h 37m
Sat 21/119:55 a.m. -
2 stops30h 05m
Deal found 2/11C$ 941
Sat 14/116:00 p.m. -
1 stop20h 15m
Mon 16/118:50 a.m. -
1 stop31h 10m
Deal found 2/11C$ 987
Sat 14/116:00 p.m. -
1 stop20h 17m
Sun 15/117:50 p.m. -
1 stop30h 20m
Deal found 31/10C$ 989
Thu 12/1111:40 a.m. -
1 stop17h 57m
Tue 17/115:45 p.m. -
1 stop11h 00m
Deal found 2/11C$ 1,014
Sat 28/1111:10 a.m. -
Nonstop7h 55m
Sat 28/116:10 p.m. -
1 stop31h 20m
Deal found 2/11C$ 1,014
Fri 6/111:00 p.m. -
1 stop25h 47m
Sat 7/118:30 p.m. -
2 stops19h 30m
Deal found 4/11C$ 1,022
Sat 14/116:35 a.m. -
2 stops17h 52m
Wed 18/116:00 a.m. -
2 stops19h 40m
Deal found 2/11C$ 1,024
Thu 19/1111:40 a.m. -
1 stop25h 27m
Sat 21/1110:15 a.m. -
1 stop18h 30m
Deal found 2/11C$ 1,025
Thu 12/117:30 a.m. -
2 stops19h 26m
Mon 23/116:00 a.m. -
2 stops19h 40m
Deal found 1/11C$ 1,025
Thu 5/119:00 a.m. -
2 stops31h 37m
Thu 12/116:30 a.m. -
2 stops19h 40m
Deal found 2/11C$ 1,026
Thu 26/1111:40 a.m. -
1 stop11h 12m
Thu 10/125:40 p.m. -
1 stop11h 05m
Deal found 4/11C$ 1,028

Find flight deals from London to Ottawa

Round-trip from

C$ 936

One-way from

C$ 381

Popular in

December

Cheapest in

June

Average price

C$ 1,070

Good round-trip deal

C$ 784 or less

Good one-way deal

C$ 730 or less
Air Canada
  • Air Canada
  • 10/12-12/12
  • 3 total stops
  • 53h 57m total
  • London to Ottawa
Search Deals
18/4-31/12
  • 18/4-31/12
  • 2 total stops
  • 35h 05m total
  • London to Ottawa
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 148 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 34 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 London (LON) to Ottawa.
Search Deals
Price to beat on a one-way flight from London (LON) to Ottawa.
Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonOttawa

STN London Stansted - YOW Ottawa

STNYOW

London Stansted

Sun 18/4

8:05 p.m.-11:40 p.m.

2 stops32h 35m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 381

LondonOttawa

STN London Stansted - YOW Ottawa

STNYOW

London Stansted

Wed 16/12

6:50 a.m.-2:48 p.m.

2 stops36h 58m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 634

LondonOttawa

STN London Stansted - YOW Ottawa

STNYOW

London Stansted

Tue 8/12

2:30 p.m.-11:40 p.m.

3 stops38h 10m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 649

LondonOttawa

LGW London Gatwick - YOW Ottawa

LGWYOW

London Gatwick

Tue 8/12

7:30 p.m.-11:40 p.m.

3 stops33h 10m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 658

LondonOttawa

STN London Stansted - YOW Ottawa

STNYOW

London Stansted

Sat 1/5

8:15 a.m.-5:35 p.m.

2 stops14h 20m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 658

LondonOttawa

STN London Stansted - YOW Ottawa

STNYOW

London Stansted

Wed 23/12

5:25 p.m.-11:40 p.m.

3 stops59h 15m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 669

LondonOttawa

LGW London Gatwick - YOW Ottawa

LGWYOW

London Gatwick

Fri 27/11

7:00 a.m.-1:14 p.m.

2 stops35h 14m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 670

LondonOttawa

STN London Stansted - YOW Ottawa

STNYOW

London Stansted

Fri 27/11

6:30 a.m.-8:07 p.m.

2 stops42h 37m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 673

LondonOttawa

STN London Stansted - YOW Ottawa

STNYOW

London Stansted

Sun 27/12

10:05 p.m.-3:00 p.m.

2 stops21h 55m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 767

LondonOttawa

LGW London Gatwick - YOW Ottawa

LGWYOW

London Gatwick

Sat 5/12

11:40 a.m.-1:20 p.m.

1 stop30h 40m

Ottawa

Wed 31/12

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

Nonstop0h 00m

C$ 774

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/11

Showing 1-10 of 52 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from London to Ottawa

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

Cheapflights Insights

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

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

Currently, June is the cheapest month in which you can book a flight from London to Ottawa (average of C$ 829). Flying from London to Ottawa in December is currently the most expensive (average of C$ 1,267). 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 LON to YOW?

When flying from London to Ottawa, 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 London to Ottawa?

Airfare is below average for this route at the moment.
London to Ottawa flights typically cost between C$ 964 and C$ 1,375 in December.
The cheapest round-trip price found within the last 5 days was C$ 936 on Air Canada (10 Dec-12 Dec).

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

Toronto (YYZ) – chosen by Cheapflights users on 50% of one-stop itineraries from London to Ottawa on Cheapflights.

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

Toronto (YYZ) is the most affordable 1-stop option, with an average round-trip price of C$ 728.

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

Flights via Paris (CDG) have the shortest average one-way travel time for 1-stop routes: 11h 05m.

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

Flights via Paris (CDG) offer the fastest connection on this route, with an average layover time of 1h 33m.

How often are flights from London to Ottawa delayed?

About 11% of weekly flights between London and Ottawa have experienced delays in the past year, with the average delay time being 192 minutes.

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

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

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

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

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

Over the past year, Air Canada has had the lowest number of delays on this route, with just 11% of flights being delayed.

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

The price you pay for your flight from London to Ottawa may vary depending on when you book. For the best chance of a lower fare, look to book 74 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Ottawa

Check out reviews from past customers who have flown with Air Transat,Air Canada, andLufthansa from London to Ottawa 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.
Air Transat
7.7
Good
584 reviews
Check prices

Food

6.7

Entertainment

7.0

Overall

7.7

Boarding

7.9

Comfort

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.
Air Transat
7.7
Good
584 reviews
Air Transat
7.7
Good
584 reviews
Check prices

Food

6.7

Entertainment

7.0

Overall

7.7

Boarding

7.9

Comfort

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.
Air Canada
7.1
Good
11,861 reviews
Air Transat
7.7
Good
584 reviews
Check prices

Food

6.7

Entertainment

7.0

Overall

7.7

Boarding

7.9

Comfort

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.
Lufthansa
6.8
Okay
8,299 reviews
Air Transat
7.7
Good
584 reviews
Check prices

Food

6.7

Entertainment

7.0

Overall

7.7

Boarding

7.9

Comfort

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

Related info for your journey

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

    Ottawa (YOW), located 10.6 km from the city centre, is the airport you fly into when you book flights from London to Ottawa. 2 airlines have flights to Ottawa from London on a regular basis. Booking flights from London to Ottawa should not be difficult; the airport handles an average of 1 inbound flight from London per day.

  • How long is the flight from London to Ottawa?

    A quick flight from London to Ottawa can take about 18h 09m. United Airlines provides one of the quickest options available for as low as C$ 1,032. Airlines will cover a distance of 5375 km. Both multi-stop and direct flights can be found to your destination and back.

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

    Our cheapest airline available from London to Ottawa is Air Transat. Our recent data shows that you can find tickets from as low as C$ 706 on this airline. An additional option worth looking into is Air Canada, starting at C$ 780. These flights start at 29% lower than the current average price 3 months from now.

  • What are the most popular routes from London to Ottawa?

    When deciding which route to take from London to Ottawa consider London Heathrow - Ottawa, London Gatwick - Ottawa or London City - Ottawa as they are the most popular.

  • What are the most reliable airlines from London to Ottawa?

    Before booking your flight to Ottawa from London, check out the most reliable airlines to get you to your destination on time: Air Canada (79%), Austrian Airlines (79%), SriLankan Airlines( 79%).

  • What are the cheapest flights from London to Ottawa?

    The cheapest flight price from London to Ottawa is C$ 672. On average you can expect to pay C$ 1,126. The most popular route, (London Heathrow - Ottawa), can usually be booked for C$ 1,015.

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

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

  • How can I find direct flights from London to Ottawa?

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

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

    Yes. Cheapflights offers flight deals from London to Ottawa 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 London to Ottawa?

    Currently, June is the cheapest month in which you can book a flight from London to Ottawa (average of C$ 829). Flying from London to Ottawa in December is currently the most expensive (average of C$ 1,267). 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

Travelling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Prescott
Brockville
Wakefield
Pembroke
Smiths Falls

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from London to Ottawa

AirlineCheapestAverageFlexibilityOn-time
Air TransatCheapestC$ 706AverageC$ 934FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
Air CanadaCheapestC$ 780AverageC$ 1,006FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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

When you search for this flight from London to Ottawa, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights helps you find that perfect flight to Ottawa from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to Ottawa flexibly with Cheapflights today.

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

Yes! Start tracking prices for London to Ottawa 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.