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Heathrow

$274+ Cheap flights from Ottawa (YOW) to Heathrow (LHR)

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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — LHR
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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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 Tuesday or Thursday and return on a Wednesday

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 July 29, 2025.

Round-trip from

$710
(Air Canada)

One-way from

$274
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$857

Good round-trip deal

$766 or less
From Ottawa to London Heathrow
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One-way flight from Ottawa to London Heathrow
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Highest demand for flights based on searches. 6% potential increase in price ($53 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Ottawa to London Heathrow.
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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 July 29, 2025.

This Air Canada deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/197:00 amYOW - LHR
1 stop9h 00mAir Canada
Sun 10/269:00 amLHR - YOW
1 stop12h 31mAir Canada
Deal found 7/27$710
This Lufthansa deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/58:55 pmYOW - LHR
1 stop28h 35mLufthansa
Thu 10/306:35 amLHR - YOW
2 stops16h 03mLufthansa
Deal found 7/28$727
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/265:50 pmYOW - LHR
1 stop12h 35mUnited Airlines
Tue 9/26:50 amLHR - YOW
2 stops15h 16mUnited Airlines
Deal found 7/27$728
This Booking.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/911:55 amYOW - LHR
2 stops15h 05mAer Lingus
Mon 10/139:10 pmLHR - YOW
2 stops28h 59mAer Lingus
Deal found 7/28$754
This Austrian Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/37:50 pmYOW - LHR
1 stop29h 45mAustrian Airlines
Mon 11/37:25 pmLHR - YOW
2 stops28h 13mAustrian Airlines
Deal found 7/29$766

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 2,558,603 searches. Data last updated July 29, 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 10/19

7:00 am-9:00 pm

1 stop9h 00m

London Heathrow

Sun 10/26

9:00 am-5:31 pm

1 stop12h 31m

$710

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Fri 9/5

8:55 pm-6:30 am

1 stop28h 35m

London Heathrow

Thu 10/30

6:35 am-6:38 pm

2 stops16h 03m

$727

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 8/26

5:50 pm-11:25 am

1 stop12h 35m

London Heathrow

Tue 9/2

6:50 am-5:06 pm

2 stops15h 16m

$728

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Thu 1/8

5:20 pm-4:35 pm

1 stop18h 15m

London Heathrow

Sun 1/18

9:00 am-3:10 pm

1 stop11h 10m

$729

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sun 1/18

2:05 pm-8:05 am

2 stops13h 00m

London Heathrow

Mon 2/9

9:50 am-7:18 pm

2 stops14h 28m

$746

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Wed 9/3

7:50 pm-6:35 am

1 stop29h 45m

London Heathrow

Mon 11/3

7:25 pm-6:38 pm

2 stops28h 13m

$766

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Fri 9/5

11:00 am-8:00 am

3 stops16h 00m

London Heathrow

Fri 9/12

8:50 am-8:05 pm

2 stops16h 15m

$811

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Sat 11/1

6:45 pm-12:50 pm

1 stop38h 05m

$274

OttawaLondon

YOW - LHR

YOWLHR

Ottawa

Tue 10/28

5:40 am-12:50 pm

3 stops27h 10m

$303

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

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 July 25, 2025.

Booking 20 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, November is the cheapest month in which you can book a flight from Ottawa to London Heathrow Airport (average of $661). Flying from Ottawa to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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 July 29, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 6% on flights from Ottawa to London Heathrow Airport by exploring options for tickets in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from Ottawa to Heathrow. Price data was last updated on December 16, 2024.

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

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

Share of 1-stop round-trip flights from Ottawa to London Heathrow Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.

Halifax (YHZ) – chosen by Cheapflights users on 50% of 1-stop itineraries from Ottawa to London Heathrow Airport on Cheapflights.

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

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

Paris (CDG) is the most affordable 1-stop option, with an average round-trip price of $581.

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

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

Flights via Paris (CDG) have the shortest average one-way travel time for 1-stop routes: 2h 40m.

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

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

Flights via Paris (CDG) offer the fastest connection on this route, with an average layover time of 1h 35m.

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 July 29, 2025.
See what other customers who have flown with Austrian Airlines, United Airlines, and Virgin Atlantic from Ottawa to London Heathrow Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Austrian Airlines
7.6
Good
821 reviews

Food

6.8

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Austrian Airlines
7.6
Good
821 reviews
Austrian Airlines
7.6
Good
821 reviews

Food

6.8

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
United Airlines
7.4
Good
8,899 reviews
Austrian Airlines
7.6
Good
821 reviews

Food

6.8

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Virgin Atlantic
7.4
Good
655 reviews
Austrian Airlines
7.6
Good
821 reviews

Food

6.8

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
WestJet
7.2
Good
2,973 reviews
Austrian Airlines
7.6
Good
821 reviews

Food

6.8

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time
Air Canada
7.1
Good
9,822 reviews
Austrian Airlines
7.6
Good
821 reviews

Food

6.8

Crew

8.1

Boarding

7.6

Overall

7.6

Entertainment

6.8

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dominik,Jun 2025

VIE - VNO

Good service and update all information. I feel like i wanna use it again next time

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?

    Ottawa (YOW) is the airport you will fly out of if you book a flight from Ottawa to London Heathrow. You should not have trouble finding flights to London Heathrow from Ottawa; the airport handles an average of 1 outbound flight to London Heathrow per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the Ottawa airport to London Heathrow. It is only a 6.6 mi journey to Ottawa (YOW) from Ottawa’s city center.

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

    According to our current data, Air Canada ($710), Lufthansa ($727), and United Airlines ($728) offers the cheapest pricing from Ottawa to London Heathrow Airport. You may be able to fly from Ottawa to London Heathrow Airport for 8% less than the average price by searching for these airlines.

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

    Consider Air Canada (74%), Aegean Airlines (74%) or Austrian Airlines (74%) when booking your flight. These represent the most reliable airlines when flying from Ottawa to London Heathrow Airport.

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

    The cheapest flight price from Ottawa to London Heathrow Airport is $765. On average you can expect to pay $935. The most popular route, (Ottawa - London Heathrow), can usually be booked for $652.

  • 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 $661). Flying from Ottawa to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Harrow
Canterbury
Dover
Stratford-upon-Avon
Orpington
Watford
Northampton
Gatwick
Borehamwood
Dartford
Broadway
Aylesbury
Chelmsford
Folkestone
Southend-on-Sea
Chichester
Swindon

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Ottawa to Heathrow

Discover the top 3 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 2,558,603 searches. Data last updated July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air FranceCheapest$454Average$598FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$699Average$782FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$702Average$799FlexibilityNo cancel feeOn-time67%

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