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Cheap flights from Ottawa to London Heathrow Airport from C$ 380

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 23/2. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LHR
20 feb. — 27 feb.1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Ottawa to London Heathrow are usually found in November or January, booked 68 days in advance, depart on a Tuesday or Friday and return on a Tuesday

Cheap flight deals from Ottawa to Heathrow

Enter your travel dates to find the best prices.

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 21 enero 2026.

mié. 4/39:55 p.m.
YOW
-
LHR
Nonstop6h 25m
Air Canada
mié. 11/36:50 a.m.
LHR
-
YOW
2 stops13h 33m
Air Canada
Deal found 20/1C$ 848
vie. 5/65:55 a.m.
YOW
-
LHR
2 stops33h 05m
Multiple Airlines
dom. 21/66:20 a.m.
LHR
-
YOW
2 stops23h 00m
Multiple Airlines
Deal found 19/1C$ 856
mié. 18/29:55 p.m.
YOW
-
LHR
Nonstop6h 25m
Multiple Airlines
mié. 25/26:00 a.m.
LHR
-
YOW
2 stops16h 41m
Multiple Airlines
Deal found 19/1C$ 861
lun. 26/12:50 p.m.
YOW
-
LHR
1 stop11h 20m
Multiple Airlines
lun. 2/26:40 p.m.
LHR
-
YOW
2 stops28h 01m
Multiple Airlines
Deal found 19/1C$ 875
mié. 11/29:55 p.m.
YOW
-
LHR
Nonstop6h 25m
Multiple Airlines
dom. 1/38:05 p.m.
LHR
-
YOW
2 stops28h 13m
Multiple Airlines
Deal found 19/1C$ 878
mar. 27/14:00 p.m.
YOW
-
LHR
1 stop10h 10m
Air Canada
mar. 10/26:00 a.m.
LHR
-
YOW
2 stops32h 41m
Air Canada
Deal found 19/1C$ 879

Find flight deals from Ottawa to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 enero 2026.

Round-trip from

C$ 848

One-way from

C$ 380

Popular in

December

Cheapest in

November

Average price

C$ 984

Good round-trip deal

C$ 1,022 or less

Good one-way deal

C$ 1,079 or less
Air Canada
  • Air Canada
  • 4/3-11/3
  • 2 total stops
  • 19h 58m total
  • Ottawa to London
Search Deals
WestJet
  • WestJet
  • 23/2
  • 2 total stops
  • 36h 35m total
  • Ottawa to London
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 63 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 January 2026
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

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 21 enero 2026.
Use the filters below to find and compare flights from Ottawa to London Heathrow Airport that are best for you.

Fly from

Ottawa

Fly to

Heathrow

Route

Depart

Return

Price

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

mié. 15/4

9:00 p.m.-8:35 a.m.

Nonstop6h 35m

London Heathrow

mié. 29/4

2:10 p.m.-5:05 p.m.

Nonstop7h 55m

C$ 926

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

mié. 15/4

9:00 p.m.-8:35 a.m.

Nonstop6h 35m

London Heathrow

mié. 29/4

8:55 a.m.-7:16 p.m.

2 stops15h 21m

C$ 929

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

mar. 14/4

10:50 a.m.-5:50 p.m.

2 stops26h 00m

London Heathrow

mar. 21/4

8:45 a.m.-7:34 p.m.

2 stops15h 49m

C$ 947

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

jue. 12/2

7:50 p.m.-7:10 a.m.

1 stop30h 20m

London Heathrow

mar. 17/2

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

2 stops15h 18m

C$ 947

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

dom. 1/3

9:55 p.m.-9:20 a.m.

Nonstop6h 25m

London Heathrow

lun. 9/3

9:00 a.m.-5:43 p.m.

1 stop12h 43m

C$ 951

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

lun. 1/6

5:30 p.m.-9:00 p.m.

1 stop22h 30m

London Heathrow

lun. 8/6

9:30 a.m.-12:25 p.m.

Nonstop7h 55m

C$ 954

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

mié. 4/2

2:05 p.m.-7:10 a.m.

2 stops12h 05m

London Heathrow

mié. 17/6

12:40 p.m.-8:51 p.m.

2 stops13h 11m

C$ 960

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

mié. 18/2

5:48 p.m.-9:10 a.m.

1 stop10h 22m

London Heathrow

mar. 24/2

9:10 a.m.-4:30 p.m.

1 stop12h 20m

C$ 965

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

mié. 18/2

7:30 p.m.-10:50 a.m.

1 stop10h 20m

London Heathrow

lun. 23/2

4:20 p.m.-11:54 p.m.

1 stop12h 34m

C$ 965

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

lun. 23/2

7:15 p.m.-12:50 p.m.

2 stops36h 35m

C$ 380

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/1

Showing 1-10 of 18 results
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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

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

Use this chart to determine the optimal time to book a round-trip flight from Ottawa to Heathrow. Price data was last updated on 16 January 2026.

The best time to book flights from Ottawa to London Heathrow Airport is 68 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, November is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of C$ 618). Flying from Ottawa to London Heathrow Airport in July is currently the most expensive (average of C$ 929). 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?

Find hourly flight availability from Ottawa to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 enero 2026.

When flying from Ottawa to London Heathrow Airport, 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 Heathrow Airport?

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 21 enero 2026.
Read reviews from past customers who have flown Virgin Atlantic,Air France, andUnited Airlines 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.
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Food

6.9

Entertainment

7.6

Boarding

7.7

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
678 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Food

6.9

Entertainment

7.6

Boarding

7.7

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Air France
7.4
Good
1,523 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Food

6.9

Entertainment

7.6

Boarding

7.7

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
United Airlines
7.4
Good
9,191 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Food

6.9

Entertainment

7.6

Boarding

7.7

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Air Canada
7.1
Good
10,646 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Food

6.9

Entertainment

7.6

Boarding

7.7

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Lufthansa
6.8
Okay
7,738 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Crew

8.2

Food

6.9

Entertainment

7.6

Boarding

7.7

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

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.

  • 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 2 outbound flights to London Heathrow per day from 5 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 6h 35m. Air Canada provides one of the quickest options available for as low as C$ 926. The distance between Ottawa and London Heathrow Airport is about 5343 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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$ 749. Other airlines that can offer you cheap pricing are Air France, from C$ 769, and United Airlines, from C$ 891. Virgin Atlantic is 29% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Ottawa to London Heathrow Airport one-way?

    The cheapest airlines for a one-way flight from Ottawa to London Heathrow Airport are WestJet (C$ 367), Air Canada (C$ 478), and Lufthansa (C$ 550).

  • 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 (38%), Austrian Airlines (38%) and SriLankan Airlines (38%).

  • What are the cheapest flights from Ottawa to London Heathrow Airport?

    On average you can expect to pay C$ 1,177 for a flight from Ottawa to London Heathrow Airport. The cheapest flight overall is C$ 967 while the most popular route, (Ottawa - London Heathrow) is currently priced at C$ 856.

  • 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, November is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of C$ 618). Flying from Ottawa to London Heathrow Airport in July is currently the most expensive (average of C$ 929). 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Sutton
Twickenham
Gatwick
Slough
Marlow
Cobham
Milton Keynes
Leamington Spa
Romford
Watford
Bedford
Luton
Stratford-upon-Avon
Hounslow

Browse thousands of different options on Cheapflights for your next trip

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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 21 enero 2026.
Air Canada flights from Ottawa to London Heathrow
Lufthansa flights from Ottawa to London Heathrow
United Airlines flights from Ottawa to London Heathrow

Top 5 airlines flying from Ottawa to Heathrow

Discover the top 5 airlines that operate flights from Ottawa to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 21 enero 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapestC$ 749AverageC$ 812FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Air FranceCheapestC$ 769AverageC$ 1,015FlexibilityNo cancel feeOn-time77%
Search Air France flights
United AirlinesCheapestC$ 891AverageC$ 1,119FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 900AverageC$ 1,038FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapestC$ 940AverageC$ 1,063FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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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.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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