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£366 Cheap Flights from London (LHR) to Ottawa (YOW)

View £366 flight on Thu, 5 Nov 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at £366 for one-way flights and £385 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, 12 Sept - Sun, 13 Sept
LHR
London
YOW
Ottawa
£385 Return, found 1 day ago
£385
Return
found 1 day ago
Select United flight, departing Sat, 12 Sept from London to Ottawa, returning Sun, 13 Sept, priced at £385 found 1 day ago
Air Canada
Thu, 10 Sept - Mon, 14 Sept
LHR
London
YOW
Ottawa
£399 Return, found 1 day ago
£399
Return
found 1 day ago
Select Air Canada flight, departing Thu, 10 Sept from London to Ottawa, returning Mon, 14 Sept, priced at £399 found 1 day ago
Swiss International Air Lines
Fri, 11 Sept - Wed, 14 Oct
LHR
London
YOW
Ottawa
£402 Return, found 1 hour ago
£402
Return
found 1 hour ago
Select Swiss International Air Lines flight, departing Fri, 11 Sept from London to Ottawa, returning Wed, 14 Oct, priced at £402 found 1 hour ago
Air Canada
Thu, 10 Sept - Sun, 20 Sept
LHR
London
YOW
Ottawa
£402 Return, found 2 days ago
£402
Return
found 2 days ago
Select Air Canada flight, departing Thu, 10 Sept from London to Ottawa, returning Sun, 20 Sept, priced at £402 found 2 days ago
Austrian Airlines
Wed, 16 Sept - Mon, 21 Sept
LHR
London
YOW
Ottawa
£403 Return, just found
£403
Return
just found
Select Austrian Airlines flight, departing Wed, 16 Sept from London to Ottawa, returning Mon, 21 Sept, priced at £403 just found
Swiss International Air Lines
Fri, 11 Sept - Fri, 18 Sept
LHR
London
YOW
Ottawa
£404 Return, just found
£404
Return
just found
Select Swiss International Air Lines flight, departing Fri, 11 Sept from London to Ottawa, returning Fri, 18 Sept, priced at £404 just found
KLM
Wed, 16 Sept - Tue, 22 Sept
LHR
London
YOW
Ottawa
£408 Return, found 1 hour ago
£408
Return
found 1 hour ago
Select KLM flight, departing Wed, 16 Sept from London to Ottawa, returning Tue, 22 Sept, priced at £408 found 1 hour ago
Air Canada
Thu, 24 Sept - Thu, 1 Oct
LHR
London
YOW
Ottawa
£410 Return, found 1 day ago
£410
Return
found 1 day ago
Select Air Canada flight, departing Thu, 24 Sept from London to Ottawa, returning Thu, 1 Oct, priced at £410 found 1 day ago
Air France
Tue, 15 Sept - Tue, 22 Sept
LHR
London
YOW
Ottawa
£413 Return, found 1 day ago
£413
Return
found 1 day ago
Select Air France flight, departing Tue, 15 Sept from London to Ottawa, returning Tue, 22 Sept, priced at £413 found 1 day ago
Austrian Airlines
Tue, 22 Sept - Sun, 27 Sept
LHR
London
YOW
Ottawa
£430 Return, found 4 days ago
£430
Return
found 4 days ago
Select Austrian Airlines flight, departing Tue, 22 Sept from London to Ottawa, returning Sun, 27 Sept, priced at £430 found 4 days ago

Frequently asked questions

How much does a flight from London (LHR-Heathrow) to Ottawa, ON (YOW-Macdonald-Cartier Intl.) cost?
You can find cheap one-way flights from £366 and cheap return flights from £385 LHR to YOW with Expedia. One-way flights typically cost between £553 and £2,129, and return flights often range between £557 and £2,567. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when LHR to YOW ticket fares go up or down.
What is the cheapest month to fly from London (LHR-Heathrow) to Ottawa, ON (YOW-Macdonald-Cartier Intl.)?
April is typically the cheapest month to fly from London Heathrow (LHR) to Ottawa Macdonald-Cartier Intl. (YOW), with average return fares around £491. April often sees lower prices because it falls outside of peak holiday travel seasons, when demand tends to be lower. Other budget-friendly months to consider for this route include May and June.
Which airlines fly direct from London (LHR) to Ottawa, ON (YOW)?
Enter LHR to YOW and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from London (LHR-Heathrow) to Ottawa, ON (YOW-Macdonald-Cartier Intl.)?
To find a cheap flight from London (LHR-Heathrow) to Ottawa, ON (YOW-Macdonald-Cartier Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from London (LHR-Heathrow) to Ottawa, ON (YOW-Macdonald-Cartier Intl.)?
The best airline to fly with from London (LHR-Heathrow) to Ottawa, ON (YOW-Macdonald-Cartier Intl.) will differ from traveler to traveler. If you like to fly early, Air Canada offers early morning flights. If price is the most important factor, Air Canada typically offers the lowest fares. Air Canada offers the most daily flights from London (LHR-Heathrow) to Ottawa, ON (YOW-Macdonald-Cartier Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from London (LHR) to Ottawa, ON (YOW)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from London (LHR-Heathrow) to Ottawa, ON (YOW-Macdonald-Cartier Intl.)?
While direct flights from London Heathrow (LHR) to Ottawa, ON (YOW-Macdonald-Cartier Intl.) are minimal, you'll find around 79 connecting flights per day. This gives you plenty of options to choose from. Some common connection points include Pearson Intl. (YYZ), Dublin (DUB), and Schiphol (AMS).
What is the earliest flight from London (LHR) to Ottawa, ON (YOW)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from London (LHR) to Ottawa, ON (YOW). To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from London (LHR-Heathrow) to Ottawa, ON (YOW-Macdonald-Cartier Intl.)?
You'll typically find the most flights from London Heathrow (LHR) to Ottawa, ON (YOW) on a Friday, with around 72 flights available. This gives you a good selection of options for your journey. Major airlines on this route include United, Air Canada, and British Airways. Flight options are notably more plentiful on Fridays and Thursdays compared to other days of the week, offering you more flexibility for your travel plans.
What are the most popular departure times for flights from London (LHR-Heathrow) to Ottawa, ON (YOW-Macdonald-Cartier Intl.)?
The most popular departure times for flights from London Heathrow (LHR) to Ottawa, ON (YOW) are between 12pm and 3pm. Many major carriers, including Air Canada, United and British Airways, offer flights during this window. Many travellers prefer this timing as it allows for a morning in London before heading to the airport, and an evening arrival in Ottawa.
How long does it take to fly from London (LHR-Heathrow) to Ottawa, ON (YOW-Macdonald-Cartier Intl.)?
A nonstop flight from LHR to YOW typically takes around 7 hours 30 minutes, covering approximately 5,348 kilometers. Connecting flights on this route usually add 4 hours 20 minutes to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from London (LHR-Heathrow) to Ottawa, ON (YOW-Macdonald-Cartier Intl.)?
Airlines that offer business class service on this route include:
  • Swiss International Air Lines
  • TAP Portugal
  • Air Baltic
  • Air France
  • Lufthansa
  • SAS
  • Brussels Airlines
  • KLM
  • LOT-Polish Airlines
  • Air Canada
  • Med View Airlines
  • Turkish Airlines
  • United
  • Austrian Airlines
  • Virgin Atlantic
How do I earn miles on a London (LHR) to Ottawa, ON (YOW) flight with Expedia?
It's easy to earn miles on a London (LHR) to Ottawa, ON (YOW) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from London (LHR) to Ottawa, ON (YOW) at the last minute?
Typically, booking a last minute flight from London (LHR) to Ottawa, ON (YOW) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a London (LHR) to Ottawa, ON (YOW) flight and hotel package?
Securing a London (LHR) to Ottawa, ON (YOW) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from London (LHR-Heathrow) to Ottawa, ON (YOW-Macdonald-Cartier Intl.)?
If you booked your London (LHR-Heathrow) to Ottawa, ON (YOW-Macdonald-Cartier Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Heathrow
Destination airport
Macdonald-Cartier Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, Austrian Airlines, British Airways, Brussels Airlines, Delta, KLM, LOT-Polish Airlines, Lufthansa, Swiss International Air Lines, TAP Portugal, United, Virgin Atlantic, WestJet
Return price
£384
Distance
5315 km
Average flight time
7 hours 10 mins

Book with confidence

Compare flights from London to Ottawa easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to Ottawa. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Macdonald-Cartier Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Heathrow to Macdonald-Cartier Intl..  

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 Heathrow (LHR) to Macdonald-Cartier Intl. (YOW)

The easiest way to view the best deals on flights from London to Ottawa 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 Heathrow to Macdonald-Cartier Intl. start at just £385 and range up to £480.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near London and Ottawa
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your London to Ottawa flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Heathrow to Macdonald-Cartier Intl. 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.  

Compare flights from London to Ottawa easily and book with confidence

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