Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Ottawa to London Heathrow Airport from £216

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 27/5. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LHR
20 Apr — 27 Apr1
1 adult

Cheapflights Tip: The best prices from Ottawa to London Heathrow are usually found in February or January, booked 49 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap 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 15 April 2025.

Round-trip from

£492

One-way from

£216

Popular in

December

Cheapest in

February

Average price

£544

Good round-trip deal

£541 or less
Air Canada
  • Air Canada
  • 5/10-18/10
  • 1 total stop
  • 29h 10m total
  • Ottawa to London
Search Deals
27/5
  • 27/5
  • 2 total stops
  • 34h 45m total
  • Ottawa to London
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£22 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals
Price to beat on a round-trip 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 15 April 2025.

Sun 5/1018:10YOW - LHR
1 stop21h 50mAir Canada
Sat 18/1012:40LHR - YOW
Nonstop7h 20mAir Canada
Deal found 13/4£492
Mon 6/1015:55YOW - LHR
2 stops19h 30mSWISS
Tue 21/1020:05LHR - YOW
2 stops27h 59mSWISS
Deal found 13/4£493
Mon 6/1017:15YOW - LHR
1 stop12h 15mAir France
Sun 19/1014:45LHR - YOW
1 stop29h 20mAir France
Deal found 13/4£496
Wed 24/921:00YOW - LHR
Nonstop6h 35mMultiple Airlines
Wed 8/1006:50LHR - YOW
2 stops11h 55mMultiple Airlines
Deal found 13/4£498
Thu 17/410:25YOW - LHR
1 stop19h 15mUnited Airlines
Thu 24/408:40LHR - YOW
2 stops30h 18mUnited Airlines
Deal found 14/4£499
Thu 12/618:55YOW - LHR
Nonstop6h 35mLufthansa
Thu 19/614:05LHR - YOW
Nonstop7h 30mLufthansa
Deal found 14/4£517
Thu 8/519:55YOW - LHR
1 stop10h 55mAustrian Airlines
Wed 14/506:00LHR - YOW
2 stops16h 04mAustrian Airlines
Deal found 14/4£563
Wed 11/617:15YOW - LHR
2 stops12h 30mKLM
Wed 18/606:30LHR - YOW
2 stops13h 35mKLM
Deal found 14/4£587

Cheapflights Fare Finder

Customise 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 858,174 searches. Data last updated 15 April 2025.
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

Sun 5/10

18:10-21:00

1 stop21h 50m

London Heathrow

Sat 18/10

12:40-15:00

Nonstop7h 20m

£492

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 6/10

15:55-16:25

2 stops19h 30m

London Heathrow

Tue 21/10

20:05-19:04

2 stops27h 59m

£493

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 6/10

17:15-10:30

1 stop12h 15m

London Heathrow

Sun 19/10

14:45-15:05

1 stop29h 20m

£496

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 24/9

21:00-08:35

Nonstop6h 35m

London Heathrow

Wed 8/10

06:50-13:45

2 stops11h 55m

£498

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Fri 9/5

18:15-10:10

1 stop10h 55m

London Heathrow

Fri 16/5

08:40-09:58

2 stops30h 18m

£499

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 12/6

18:55-06:30

Nonstop6h 35m

London Heathrow

Thu 19/6

14:05-16:35

Nonstop7h 30m

£517

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 8/5

19:55-11:50

1 stop10h 55m

London Heathrow

Wed 14/5

06:00-17:04

2 stops16h 04m

£563

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 11/6

17:15-10:45

2 stops12h 30m

London Heathrow

Wed 18/6

06:30-15:05

2 stops13h 35m

£587

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Mon 14/7

13:55-09:05

2 stops14h 10m

London Heathrow

Thu 7/8

09:50-21:10

2 stops16h 20m

£742

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 27/5

05:55-21:40

2 stops34h 45m

£216

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Showing 1-10 of 16 results
1
2

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 return 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 return flight from Ottawa to Heathrow. Price data was last updated on 11 April 2025.

Booking 49 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ottawa to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 £112). Flying from Ottawa to London Heathrow Airport in August is currently the most expensive (average of £164). 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 15 April 2025.

One of the essential ways to save on airfare from Ottawa to London Heathrow Airport is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the afternoon could potentially save you up to 16% on airfare.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches 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.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

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).

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 15 April 2025.
See what other customers who have flown with KLM, Austrian Airlines and Air France from Ottawa to London have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,323 reviews
Check prices

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.1

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,323 reviews
KLM
7.8
Good
1,323 reviews
Check prices

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.1

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Austrian Airlines
7.6
Good
775 reviews
KLM
7.8
Good
1,323 reviews
Check prices

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.1

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Air France
7.5
Good
1,435 reviews
KLM
7.8
Good
1,323 reviews
Check prices

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.1

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
SWISS
7.5
Good
1,578 reviews
KLM
7.8
Good
1,323 reviews
Check prices

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.1

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
United Airlines
7.4
Good
8,656 reviews
KLM
7.8
Good
1,323 reviews
Check prices

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.1

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

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?

    If you book a flight to London Heathrow from Ottawa, you will be flying from Ottawa, which is the city’s only airport. Ottawa (YOW) is located 6.6 mi from the center of Ottawa. There are 3 flights from Ottawa to London Heathrow per day from 1 airline.

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

    According to our current data, Air Canada (£492), SWISS (£493), and Air France (£496) offers the cheapest pricing from Ottawa to London Heathrow Airport. You may be able to fly from Ottawa to London Heathrow Airport for 18% less than the average price by searching for these airlines.

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

    £335 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Canada and Lufthansa, with prices starting from £373 and £375, respectively.

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

    No one likes to see their flight delayed. When booking a flight from Ottawa to London Heathrow Airport consider choosing Air Canada (100%), Aegean Airlines (100%) or Austrian Airlines (100%) as they are the most reliable in getting you off to your destination on time.

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

    Looking for the cheapest flight from Ottawa to London Heathrow Airport? While on average our users pay £552, our data indicates the cheapest price to be £497. The most popular route (Ottawa - London Heathrow), is priced around £498.

  • 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 holiday 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 £112). Flying from Ottawa to London Heathrow Airport in August is currently the most expensive (average of £164). 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
Hounslow
Deal
Milton Keynes
Luton
Gatwick
Croydon
Slough
Eastbourne
Northampton
Wembley
Crawley
Hayes
Swindon
Southend-on-Sea
Maidstone
Ilford
Winchester
Ipswich
Southall
Folkestone

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Ottawa to Heathrow

Discover the top airline 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 858,174 searches. Data last updated 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£489Average£623FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

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

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

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

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!

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.
Site
©2025 Cheapflights