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

Paris (CDG) is the most affordable 1-stop option, with an average round-trip price of C$ 1,030.

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

Paris (CDG) – chosen by Cheapflights users on 43% of one-stop itineraries from Ottawa to London Heathrow Airport on Cheapflights.

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

Flights via Halifax (YHZ) have the shortest average one-way travel time for 1-stop routes: 10h 23m.

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

Flights via Newark (EWR) offer the fastest connection on this route, with an average layover time of 2h 11m.

How long is the flight from Ottawa to London Heathrow Airport?

A quick flight from Ottawa to London Heathrow Airport can take about 14h 30m. United Airlines provides one of the quickest options available for as low as C$ 948. The distance between Ottawa and London Heathrow Airport is about 5343 km.

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

Cheapflights users have booked flights from Ottawa to London Heathrow Airport round-trip from C$ 734. Other airlines that can offer you cheap pricing are Air France, from C$ 735, and KLM, from C$ 832. Virgin Atlantic is 31% cheaper than the average price of flights available within the next 90 days to this destination.

In terms of precipitation, rainfall in London Heathrow Airport 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 Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, 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 cheapest flights from Ottawa to London Heathrow Airport?

On average you can expect to pay C$ 1,166 for a flight from Ottawa to London Heathrow Airport. The cheapest flight overall is C$ 839 while the most popular route, (Ottawa - London Heathrow) is currently priced at C$ 816.

What are the most reliable airlines from Ottawa to London Heathrow Airport?

The top 3 most reliable airlines when flying from Ottawa to London Heathrow Airport are Air Canada (68%), Aegean Airlines (68%) and Austrian Airlines (68%).

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

When booking a flight from Ottawa to London Heathrow Airport, you may want to consider flying on Air Canada, Air France or KLM as they are the most popular for this route.

What is the cheapest day to fly round-trip from Ottawa to London Heathrow Airport?

Thursday is generally a great day to depart. Flying on this day could help you save up to 18%.

How far in advance should I book a flight from Ottawa to London Heathrow Airport?

Find a great deal and save up to 4% by booking at least 36 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Ottawa to London Heathrow Airport within the next two weeks, with the cheapest ticket starting at C$ 952.

What is the cheapest month to fly from Ottawa to London Heathrow Airport?

February is one of the best times of the year to fly to London Heathrow Airport from Ottawa. Prices for February average C$ 1,044 per person but you can even find prices for as low as C$ 797. The most expensive prices can be found in the month of December. Opting for a February flight can save you 20% on your journey compared to booking in December

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

Most people fly from Ottawa (YOW) if they book a flight from Ottawa to London Heathrow. On average, Ottawa has 3 outbound flights to London Heathrow per day from 6 airlines. Ottawa is conveniently located just 10.6 km from Ottawa’s city centre.

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

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

How can I find direct flights from Ottawa to Heathrow?

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

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

Yes. Cheapflights offers flight deals from Ottawa to Heathrow 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$ 342+ Flights from Ottawa to London Heathrow Airport

Q: How much does it cost to fly round-trip from Ottawa to London Heathrow Airport?

Airfare is below average for this route at the moment. Ottawa to London Heathrow Airport flights typically cost between C$ 1,009 and C$ 1,147 in September. The cheapest round-trip price found within the last 3 days was C$ 862 on Air Canada (29 Sep-8 Oct).

Cheapflights Tip: The best prices from Ottawa to London Heathrow are usually found in February or January, booked 20 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap flight deals from Ottawa to Heathrow

Round-trip from	C$ 862
One-way from	C$ 342
Popular in	December
Cheapest in	February
Average price	C$ 1,050
Good round-trip deal	C$ 959 or less
Good one-way deal	C$ 1,188 or less

Air Canada
29/9-8/10
1 total stop
19h 34m total
Ottawa to London

Search Deals

12/10
2 total stops
21h 20m total
Ottawa to London

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (C$ 96 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 41 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Price to beat on a round-trip flight from Ottawa to London Heathrow.

Search Deals

Price to beat on a one-way flight from Ottawa to London Heathrow.

Search Deals

Find flight deals from Ottawa to Heathrow

Cheapest flights from Ottawa to Heathrow
Explore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Wed 26/1110:50 a.m.YOW - LHR

1 stop15h 20mMultiple Airlines

Tue 2/126:50 a.m.LHR - YOW

2 stops12h 22mMultiple Airlines

Deal found 10/9C$ 862

Mon 22/96:55 p.m.YOW - LHR

Nonstop6h 35mAir Canada

Wed 1/105:40 p.m.LHR - YOW

1 stop10h 24mAir Canada

Deal found 9/9C$ 865

Mon 29/96:55 p.m.YOW - LHR

Nonstop6h 35mAir Canada

Wed 8/109:30 a.m.LHR - YOW

1 stop9h 23mAir Canada

Deal found 10/9C$ 866

Mon 29/96:55 p.m.YOW - LHR

Nonstop6h 35mMultiple Airlines

Wed 8/1012:40 p.m.LHR - YOW

Nonstop7h 20mMultiple Airlines

Deal found 10/9C$ 870

Wed 15/109:00 p.m.YOW - LHR

Nonstop6h 35mMultiple Airlines

Wed 5/119:00 a.m.LHR - YOW

2 stops15h 18mMultiple Airlines

Deal found 11/9C$ 874

Tue 7/102:40 p.m.YOW - LHR

1 stop10h 50mMultiple Airlines

Tue 14/106:50 a.m.LHR - YOW

2 stops12h 01mMultiple Airlines

Deal found 10/9C$ 876

Wed 8/109:05 a.m.YOW - LHR

1 stop16h 25mMultiple Airlines

Wed 15/106:50 a.m.LHR - YOW

2 stops12h 01mMultiple Airlines

Deal found 8/9C$ 877

Wed 24/910:30 a.m.YOW - LHR

2 stops15h 00mMultiple Airlines

Tue 30/96:50 a.m.LHR - YOW

2 stops12h 01mMultiple Airlines

Deal found 10/9C$ 879

Wed 10/99:00 p.m.YOW - LHR

Nonstop6h 35mMultiple Airlines

Wed 24/96:00 a.m.LHR - YOW

2 stops16h 04mMultiple Airlines

Deal found 10/9C$ 881

Wed 17/99:05 a.m.YOW - LHR

1 stop16h 25mMultiple Airlines

Wed 24/912:40 p.m.LHR - YOW

Nonstop7h 20mMultiple Airlines

Deal found 10/9C$ 883

Mon 22/99:05 a.m.YOW - LHR

1 stop19h 30mMultiple Airlines

Wed 1/109:30 a.m.LHR - YOW

1 stop14h 34mMultiple Airlines

Deal found 11/9C$ 884

Best flights from Ottawa to Heathrow
Discover carefully curated flight deals from Ottawa to Heathrow that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 11 September 2025.

Tue 16/910:25 a.m.YOW - LHR

2 stops14h 30mUnited Airlines

Tue 30/96:50 a.m.LHR - YOW

2 stops14h 53mUnited Airlines

Deal found 11/9C$ 948

Thu 16/107:00 a.m.YOW - LHR

1 stop9h 00mAir Canada

Mon 27/109:00 a.m.LHR - YOW

2 stops14h 18mAir Canada

Deal found 10/9C$ 949

Tue 16/912:30 p.m.YOW - LHR

1 stop12h 25mUnited Airlines

Mon 22/96:50 a.m.LHR - YOW

2 stops14h 53mUnited Airlines

Deal found 8/9C$ 948

Tue 16/910:25 a.m.YOW - LHR

2 stops14h 30mUnited Airlines

Tue 23/97:45 a.m.LHR - YOW

2 stops16h 07mUnited Airlines

Deal found 8/9C$ 948

Tue 30/92:48 p.m.YOW - LHR

2 stops14h 52mUnited Airlines

Tue 7/107:45 a.m.LHR - YOW

2 stops13h 58mUnited Airlines

Deal found 9/9C$ 949

Tue 7/1011:55 a.m.YOW - LHR

2 stops17h 15mUnited Airlines

Tue 14/107:45 a.m.LHR - YOW

2 stops13h 58mUnited Airlines

Deal found 9/9C$ 959

Tue 7/105:50 p.m.YOW - LHR

1 stop10h 30mUnited Airlines

Tue 21/103:20 p.m.LHR - YOW

1 stop11h 45mUnited Airlines

Deal found 9/9C$ 964

Mon 13/1012:30 p.m.YOW - LHR

1 stop12h 25mUnited Airlines

Mon 2/33:10 p.m.LHR - YOW

1 stop11h 46mUnited Airlines

Deal found 10/9C$ 964

Sun 26/107:30 p.m.YOW - LHR

1 stop31h 10mUnited Airlines

Sun 2/1111:05 a.m.LHR - YOW

2 stops34h 27mUnited Airlines

Deal found 11/9C$ 967

Tue 14/1010:25 a.m.YOW - LHR

2 stops14h 30mUnited Airlines

Tue 28/107:40 a.m.LHR - YOW

2 stops17h 38mUnited Airlines

Deal found 9/9C$ 974

Direct flights from Ottawa to Heathrow
Explore direct flight options from Ottawa to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 11 September 2025.

Mon 22/96:55 p.m.YOW - LHR

Nonstop6h 35mAir Canada

Wed 1/1012:40 p.m.LHR - YOW

Nonstop7h 20mAir Canada

Deal found 9/9C$ 865

Mon 29/96:55 p.m.YOW - LHR

Nonstop6h 35mMultiple Airlines

Wed 8/1012:40 p.m.LHR - YOW

Nonstop7h 20mMultiple Airlines

Deal found 10/9C$ 870

Wed 8/109:00 p.m.YOW - LHR

Nonstop6h 35mAir Canada

Wed 15/1012:40 p.m.LHR - YOW

Nonstop7h 20mAir Canada

Deal found 8/9C$ 890

Mon 29/96:55 p.m.YOW - LHR

Nonstop6h 35mAir Canada

Wed 8/1012:40 p.m.LHR - YOW

Nonstop7h 20mAir Canada

Deal found 10/9C$ 891

Mon 13/106:55 p.m.YOW - LHR

Nonstop6h 35mLufthansa

Mon 20/102:05 p.m.LHR - YOW

Nonstop7h 20mLufthansa

Deal found 10/9C$ 920

Mon 22/96:55 p.m.YOW - LHR

Nonstop6h 35mAir Canada

Thu 2/102:05 p.m.LHR - YOW

Nonstop7h 20mAir Canada

Deal found 11/9C$ 940

Mon 29/96:55 p.m.YOW - LHR

Nonstop6h 35mAir Canada

Thu 9/102:05 p.m.LHR - YOW

Nonstop7h 20mAir Canada

Deal found 9/9C$ 941

Mon 6/106:55 p.m.YOW - LHR

Nonstop6h 35mLufthansa

Thu 23/102:05 p.m.LHR - YOW

Nonstop7h 20mLufthansa

Deal found 9/9C$ 944

Sat 11/109:00 p.m.YOW - LHR

Nonstop6h 35mAir Canada

Thu 16/102:05 p.m.LHR - YOW

Nonstop7h 20mAir Canada

Deal found 11/9C$ 989

Last-minute flights from Ottawa to Heathrow
Discover last-minute flight deals from Ottawa to Heathrow. Data last updated 11 September 2025 and is based on user searches.

Mon 15/98:55 p.m.YOW - LHR

1 stop28h 35mMultiple Airlines

Mon 22/97:30 p.m.LHR - YOW

2 stops26h 34mMultiple Airlines

Deal found 10/9C$ 881

Wed 17/99:05 a.m.YOW - LHR

1 stop16h 25mMultiple Airlines

Wed 24/912:40 p.m.LHR - YOW

Nonstop7h 20mMultiple Airlines

Deal found 10/9C$ 883

Mon 22/96:55 p.m.YOW - LHR

Nonstop6h 35mAir Canada

Wed 1/105:40 p.m.LHR - YOW

1 stop10h 24mAir Canada

Deal found 9/9C$ 865

Mon 22/99:05 a.m.YOW - LHR

1 stop19h 30mMultiple Airlines

Wed 1/109:30 a.m.LHR - YOW

1 stop14h 34mMultiple Airlines

Deal found 11/9C$ 884

Wed 24/910:30 a.m.YOW - LHR

2 stops15h 00mMultiple Airlines

Tue 30/96:50 a.m.LHR - YOW

2 stops12h 01mMultiple Airlines

Deal found 10/9C$ 879

Mon 29/96:55 p.m.YOW - LHR

Nonstop6h 35mAir Canada

Wed 8/109:30 a.m.LHR - YOW

1 stop9h 23mAir Canada

Deal found 10/9C$ 866

Mon 29/96:55 p.m.YOW - LHR

Nonstop6h 35mMultiple Airlines

Wed 8/1012:40 p.m.LHR - YOW

Nonstop7h 20mMultiple Airlines

Deal found 10/9C$ 870

Tue 7/102:40 p.m.YOW - LHR

1 stop10h 50mMultiple Airlines

Tue 14/106:50 a.m.LHR - YOW

2 stops12h 01mMultiple Airlines

Deal found 10/9C$ 876

Wed 8/109:05 a.m.YOW - LHR

1 stop16h 25mMultiple Airlines

Wed 15/106:50 a.m.LHR - YOW

2 stops12h 01mMultiple Airlines

Deal found 8/9C$ 877

Wed 15/109:00 p.m.YOW - LHR

Nonstop6h 35mMultiple Airlines

Wed 5/119:00 a.m.LHR - YOW

2 stops15h 18mMultiple Airlines

Deal found 11/9C$ 874

One-way flights from Ottawa to Heathrow
Search for one-way flight options from Ottawa to Heathrow. Find affordable one-way fares based on user searches. Data last updated 11 September 2025.

Sun 12/105:05 p.m.YOW - LHR

2 stops21h 20mMultiple Airlines

Deal found 11/9C$ 342

Wed 15/1010:45 a.m.YOW - LHR

2 stops20h 20mMultiple Airlines

Deal found 10/9C$ 351

Tue 14/102:20 p.m.YOW - LHR

2 stops19h 35mMultiple Airlines

Deal found 10/9C$ 353

Tue 7/105:55 a.m.YOW - LHR

2 stops25h 10mWestJet

Deal found 9/9C$ 363

Tue 7/105:05 p.m.YOW - LHR

2 stops16h 50mMultiple Airlines

Deal found 9/9C$ 366

Thu 16/105:05 p.m.YOW - LHR

2 stops16h 50mMultiple Airlines

Deal found 10/9C$ 371

Fri 17/105:05 p.m.YOW - LHR

2 stops17h 50mMultiple Airlines

Deal found 10/9C$ 377

Sat 11/105:05 p.m.YOW - LHR

2 stops36h 15mMultiple Airlines

Deal found 10/9C$ 380

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 16/9

10:25 a.m.-5:55 a.m.

2 stops14h 30m

London Heathrow

Tue 30/9

6:50 a.m.-4:43 p.m.

2 stops14h 53m

C$ 948

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 16/9

12:30 p.m.-5:55 a.m.

1 stop12h 25m

London Heathrow

Mon 22/9

6:50 a.m.-4:43 p.m.

2 stops14h 53m

C$ 948

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 16/9

10:25 a.m.-5:55 a.m.

2 stops14h 30m

London Heathrow

Tue 23/9

7:45 a.m.-6:52 p.m.

2 stops16h 07m

C$ 948

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 16/10

7:00 a.m.-9:00 p.m.

1 stop9h 00m

London Heathrow

Mon 27/10

9:00 a.m.-7:18 p.m.

2 stops14h 18m

C$ 949

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 30/9

2:48 p.m.-10:40 a.m.

2 stops14h 52m

London Heathrow

Tue 7/10

7:45 a.m.-4:43 p.m.

2 stops13h 58m

C$ 949

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 7/10

11:55 a.m.-10:10 a.m.

2 stops17h 15m

London Heathrow

Tue 14/10

7:45 a.m.-4:43 p.m.

2 stops13h 58m

C$ 959

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 7/10

5:50 p.m.-9:20 a.m.

1 stop10h 30m

London Heathrow

Tue 21/10

3:20 p.m.-10:05 p.m.

1 stop11h 45m

C$ 964

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 13/10

12:30 p.m.-5:55 a.m.

1 stop12h 25m

London Heathrow

Mon 2/3

3:10 p.m.-9:56 p.m.

1 stop11h 46m

C$ 964

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 26/10

7:30 p.m.-6:40 a.m.

1 stop31h 10m

London Heathrow

Sun 2/11

11:05 a.m.-4:32 p.m.

2 stops34h 27m

C$ 967

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 14/10

10:25 a.m.-5:55 a.m.

2 stops14h 30m

London Heathrow

Tue 28/10

7:40 a.m.-9:18 p.m.

2 stops17h 38m

C$ 974

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/9

Showing 1-10 of 19 results

Best time to book a flight from Ottawa to Heathrow

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

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 Heathrow Airport

Prices

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

The best time to book flights from Ottawa to London Heathrow Airport is 20 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of C$ 560). Flying from Ottawa to London Heathrow Airport in July is currently the most expensive (average of C$ 856). 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 LHR?

It’s typically best to fly out from Ottawa to London Heathrow Airport in the morning. Doing so could potentially save you 2% on the flight price compared to flying in the afternoon, which is usually more expensive.

What is the cheapest day to fly from Ottawa to London Heathrow Airport?

Travelers seeking maximum savings on their Ottawa to London Heathrow Airport flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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

Reviews of airlines servicing Heathrow

Read reviews from past customers who have flown Air France,United Airlines, andVirgin Atlantic from Ottawa to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Air France

7.4

Good

1,469 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

SYLVIA,Apr 2025

TLV - CDG

A newer plane. The flight from TelAviv to Paris was on a new aircraft, wider seat. ,more privacy. Nice toilets. The flight from Paris to Santiago Chile was on a very old aircraft. Awful toilets, outmoded sits etc.

Air France

7.4

Good

1,469 reviews

Air France

7.4

Good

1,469 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

SYLVIA,Apr 2025

TLV - CDG

United Airlines

7.4

Good

8,937 reviews

Air France

7.4

Good

1,469 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

SYLVIA,Apr 2025

TLV - CDG

Virgin Atlantic

7.4

Good

664 reviews

Air France

7.4

Good

1,469 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

SYLVIA,Apr 2025

TLV - CDG

Air Canada

7.1

Good

10,000 reviews

Air France

7.4

Good

1,469 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

SYLVIA,Apr 2025

TLV - CDG

Lufthansa

6.8

Okay

7,409 reviews

Air France

7.4

Good

1,469 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

SYLVIA,Apr 2025

TLV - CDG

Related info for your journey

What airport do you fly from for flights from Ottawa to London Heathrow?
Most people fly from Ottawa (YOW) if they book a flight from Ottawa to London Heathrow. On average, Ottawa has 3 outbound flights to London Heathrow per day from 6 airlines. Ottawa is conveniently located just 10.6 km from Ottawa’s city centre.
How long is the flight from Ottawa to London Heathrow Airport?
A quick flight from Ottawa to London Heathrow Airport can take about 14h 30m. United Airlines provides one of the quickest options available for as low as C$ 948. The distance between Ottawa and London Heathrow Airport is about 5343 km.
What are the cheapest airlines flying from Ottawa to London Heathrow Airport round-trip?
Cheapflights users have booked flights from Ottawa to London Heathrow Airport round-trip from C$ 734. Other airlines that can offer you cheap pricing are Air France, from C$ 735, and KLM, from C$ 832. Virgin Atlantic is 31% cheaper than the average price of flights available within the next 90 days to this destination.
What are the most reliable airlines from Ottawa to London Heathrow Airport?
The top 3 most reliable airlines when flying from Ottawa to London Heathrow Airport are Air Canada (68%), Aegean Airlines (68%) and Austrian Airlines (68%).
What are the cheapest flights from Ottawa to London Heathrow Airport?
On average you can expect to pay C$ 1,166 for a flight from Ottawa to London Heathrow Airport. The cheapest flight overall is C$ 839 while the most popular route, (Ottawa - London Heathrow) is currently priced at C$ 816.
Can I find deals for flights from Ottawa to Heathrow that include hotel bookings?
Yes. In addition to deals on Ottawa to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ottawa to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Heathrow.
Can I find deals for business class flights from Ottawa to Heathrow?
Yes. Cheapflights offers flight deals from Ottawa to Heathrow 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 Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of C$ 560). Flying from Ottawa to London Heathrow Airport in July is currently the most expensive (average of C$ 856). 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

Brentford

Sutton

Hounslow

Slough

Marlow

Leamington Spa

Milton Keynes

Romford

Watford

Bedford

Luton

Southall

Browse thousands of different options on Cheapflights for your next trip

Top 6 airlines flying from Ottawa to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	CheapestC$ 734	AverageC$ 823	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Air France	CheapestC$ 735	AverageC$ 922	FlexibilityNo cancel fee	On-time77%	Search Air France flights
KLM	CheapestC$ 832	AverageC$ 1,233	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	CheapestC$ 893	AverageC$ 1,112	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	CheapestC$ 903	AverageC$ 1,053	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Lufthansa	CheapestC$ 960	AverageC$ 1,068	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights

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

When you search for this flight from Ottawa to Heathrow, 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 Ottawa to Heathrow?

Millions of users choose and trust Cheapflights to book the best flight deals from Ottawa to Heathrow for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes, we can. To see specific flights from Ottawa to Heathrow with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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Cheap flights from Ottawa to London Heathrow Airport from C$ 342

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Ottawa to London Heathrow are usually found in February or January, booked 20 days in advance, depart on a Friday or Thursday and return on a Wednesday

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Find flight deals from Ottawa to Heathrow

Cheapest flights from Ottawa to HeathrowExplore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Explore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

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Best time to book a flight from Ottawa to Heathrow

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

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Reviews of airlines servicing Heathrow

Read reviews from past customers who have flown Air France,United Airlines, andVirgin Atlantic from Ottawa to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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Fly from Ottawa to Heathrow on these airlines

Choose from the following airlines for your flight from Ottawa to Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 11 September 2025.

Top 6 airlines flying from Ottawa to Heathrow

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Cheapest flights from Ottawa to Heathrow
Explore the most affordable flight options available from Ottawa to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.