$502 Cheap Flights from Ottawa (YOW) to London (LHR)

View $502 flight on Tue, Nov 25, 2025Opens in a new window

Popular airlines from Ottawa International Airport (YOW) to Heathrow Airport (LHR)

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Cheap Flights from Ottawa to London (YOW-LHR)

Prices were available within the past 7 days and start at $502 for one-way flights and $477 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, Nov 6 - Mon, Nov 10
YOW
Ottawa
LHR
London
$477 Roundtrip, found 4 days ago
$477
Roundtrip
found 4 days ago
Select Air Canada flight, departing Thu, Nov 6 from Ottawa to London, returning Mon, Nov 10, priced at $477 found 4 days ago
Air Canada
Thu, Nov 6 - Mon, Nov 10
YOW
Ottawa
LHR
London
$483 Roundtrip, found 4 days ago
$483
Roundtrip
found 4 days ago
Select Air Canada flight, departing Thu, Nov 6 from Ottawa to London, returning Mon, Nov 10, priced at $483 found 4 days ago
Air Canada
Thu, Nov 6 - Mon, Nov 10
YOW
Ottawa
LHR
London
$488 Roundtrip, found 4 days ago
$488
Roundtrip
found 4 days ago
Select Air Canada flight, departing Thu, Nov 6 from Ottawa to London, returning Mon, Nov 10, priced at $488 found 4 days ago
Air Canada
Thu, Nov 6 - Mon, Nov 10
YOW
Ottawa
LHR
London
$494 Roundtrip, found 4 days ago
$494
Roundtrip
found 4 days ago
Select Air Canada flight, departing Thu, Nov 6 from Ottawa to London, returning Mon, Nov 10, priced at $494 found 4 days ago
Air Canada
Thu, Nov 6 - Mon, Nov 10
YOW
Ottawa
LHR
London
$501 Roundtrip, found 4 days ago
$501
Roundtrip
found 4 days ago
Select Air Canada flight, departing Thu, Nov 6 from Ottawa to London, returning Mon, Nov 10, priced at $501 found 4 days ago
United
Thu, Nov 6 - Mon, Nov 10
YOW
Ottawa
LHR
London
$505 Roundtrip, found 4 days ago
$505
Roundtrip
found 4 days ago
Select United flight, departing Thu, Nov 6 from Ottawa to London, returning Mon, Nov 10, priced at $505 found 4 days ago
Lufthansa
Thu, Nov 6 - Mon, Nov 10
YOW
Ottawa
LHR
London
$508 Roundtrip, found 4 days ago
$508
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Thu, Nov 6 from Ottawa to London, returning Mon, Nov 10, priced at $508 found 4 days ago
Air Canada
Thu, Nov 6 - Mon, Nov 10
YOW
Ottawa
LHR
London
$513 Roundtrip, found 4 days ago
$513
Roundtrip
found 4 days ago
Select Air Canada flight, departing Thu, Nov 6 from Ottawa to London, returning Mon, Nov 10, priced at $513 found 4 days ago
Virgin Atlantic
Thu, Nov 6 - Mon, Nov 10
YOW
Ottawa
LHR
London
$617 Roundtrip, found 4 days ago
$617
Roundtrip
found 4 days ago
Select Virgin Atlantic flight, departing Thu, Nov 6 from Ottawa to London, returning Mon, Nov 10, priced at $617 found 4 days ago
Austrian Airlines
Tue, Oct 21 - Sat, Nov 15
YOW
Ottawa
LHR
London
$632 Roundtrip, found 7 hours ago
$632
Roundtrip
found 7 hours ago
Select Austrian Airlines flight, departing Tue, Oct 21 from Ottawa to London, returning Sat, Nov 15, priced at $632 found 7 hours ago

Find the cheapest month to fly from Ottawa (YOW) to London (LHR)

February is typically the cheapest month to fly

From $572 - $1,389 per traveler.

Graph displaying average flight prices per month

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Gatwick LGW. Cheapest option available. Average driving time to city center is 52 minutes. Flights from $927
LGW
Gatwick
Cheapest
Average driving time to city center52 min
Flights from $927
Flights from Ottawa (YOW) to London (LHR)
Origin airport
Macdonald-Cartier Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, Austrian Airlines, Brussels Airlines, KLM, LOT-Polish Airlines, Lufthansa, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic, WestJet
Roundtrip price
$476
Distance
3322 mi
Average flight time
6 hours 35 mins

Ottawa to London Flights

The cheapest times to fly from Ottawa to London

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ottawa to London are during the month of November. You can find some of the cheapest flights from Ottawa to London with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ottawa to London

Sunday is one of the best days to book for cheap flights from Ottawa to London: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ottawa to London

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ottawa to London in 2025. You can also book with separate airlines for your outbound and return journeys, from $502 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ottawa to London flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ottawa to London airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Macdonald-Cartier Intl. Airport (YOW) to Heathrow Airport (LHR) cost?
Grab a cheap one-way flight from $502 or cheap return flight from $477 from Macdonald-Cartier Intl. Airport (YOW) to Heathrow Airport (LHR) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Macdonald-Cartier Intl. Airport (YOW) to Heathrow Airport (LHR)?
Planning your trip for November is a great way to save, as it's the cheapest month for flights between YOW and LHR. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from Macdonald-Cartier Intl. Airport (YOW) to Heathrow Airport (LHR)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest YOW to LHR flight.
How many flights per day from Macdonald-Cartier Intl. Airport (YOW) to Heathrow Airport (LHR)?
There aren't any daily direct flights available from Macdonald-Cartier Intl. Airport (YOW) to Heathrow Airport (LHR). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from YOW to LHR?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* But this can change based on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What airline has the least delays from YOW to LHR?
With 86% of flights usually landing on time, Air Canada has the best on-time performance for direct flights from Macdonald-Cartier Intl. Airport (YOW) to Heathrow Airport (LHR). To monitor your flight status and receive notifications about any changes, head to the Expedia App.
What is the best time to fly from Macdonald-Cartier Intl. Airport (YOW) to Heathrow Airport (LHR)?
To land at Heathrow Airport (LHR) on schedule, select a flight that leaves from Macdonald-Cartier Intl. Airport (YOW) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Macdonald-Cartier Intl. Airport (YOW) to Heathrow Airport (LHR) last-minute?
Last-minute bookings from YOW to LHR are typically more expensive. To lock in the cheapest rates, start looking for flights well in advance. That being said, if you're flexible with your travel dates, you may find a cheap ticket right before your journey.
Is it cheaper to book a YOW to LHR flight and hotel package?
Booking a YOW to LHR flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Choose from our extensive range of stays and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Macdonald-Cartier Intl. Airport (YOW) to Heathrow Airport (LHR)?
Usually, it's possible to reschedule or cancel your YOW to LHR flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.