
Popular airlines from Ottawa International Airport (YOW) to Heathrow Airport (LHR)
- Air Canada
Air Canada
- Lufthansa
Lufthansa
- LOT-Polish Airlines
LOT-Polish Airlines
- Virgin Atlantic
Virgin Atlantic
- Air France
Air France
- Austrian Airlines
Austrian Airlines
- Aer Lingus
Aer Lingus
- Plan, book, fly with confidence
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Cheap Flights from Ottawa (YOW) to London (LHR)
Prices were available within the past 7 days and start at £251 for one-way flights and £534 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.










Find the cheapest month to fly from Ottawa (YOW) to London (LHR)
February is typically the cheapest month to fly
Graph displaying average flight prices per month
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 |
Return price | £533 |
Distance | 5315 km |
Average flight time | 6 hours 35 mins |
Compare flights from Ottawa to London easily and book with confidence
For travelling on business or for pleasure, Expedia makes it easy to book your flights from Ottawa to London. Operating between them 7 flights per day, 20 airlines cover the route. And Aegean Airlines, Air Canada, Austrian, SriLankan Airlines, Lufthansa, United Airlines, TAP Air Portugal fly direct, getting you to Heathrow in just 6hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Macdonald-Cartier Intl. to Heathrow.
To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights.
Grab a great deal on your flight from Macdonald-Cartier Intl. (YOW) to Heathrow (LHR)
The easiest way to view the best deals on flights from Ottawa to London today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Macdonald-Cartier Intl. to Heathrow start at just £534 and range up to £575.
To find an even better deal, try
- being flexible on your dates – midweek flights can be cheaper
- looking for other airports near Ottawa and London
- booking your flight during November, the cheapest month on this route
- varying your flight times – early morning and late at night are sometimes cheaper
Why you should book your Ottawa to London flight with Expedia!
We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Macdonald-Cartier Intl. to Heathrow for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.
Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.
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