A dinosaur skeleton in an airport terminal.

CA $716 Cheap Flights from Ottawa (YOW) to London (LHR)

View CA $716 flight on Sun, Dec 27, 2026Opens in a new window

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

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at CA $716 for one-way flights and CA $877 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, Oct 12 - Mon, Oct 19
YOW
Ottawa
LHR
London
CA $877 Roundtrip, found 1 hour ago
CA $877
Roundtrip
found 1 hour ago
Select Air Canada flight, departing Mon, Oct 12 from Ottawa to London, returning Mon, Oct 19, priced at CA $877 found 1 hour ago
Air Canada
Wed, Oct 7 - Thu, Oct 15
YOW
Ottawa
LHR
London
CA $877 Roundtrip, found 1 day ago
CA $877
Roundtrip
found 1 day ago
Select Air Canada flight, departing Wed, Oct 7 from Ottawa to London, returning Thu, Oct 15, priced at CA $877 found 1 day ago
Air Canada
Thu, Oct 1 - Tue, Oct 13
YOW
Ottawa
LHR
London
CA $880 Roundtrip, found 4 hours ago
CA $880
Roundtrip
found 4 hours ago
Select Air Canada flight, departing Thu, Oct 1 from Ottawa to London, returning Tue, Oct 13, priced at CA $880 found 4 hours ago
Air Canada
Sun, Sep 27 - Thu, Oct 15
YOW
Ottawa
LHR
London
CA $881 Roundtrip, found 11 hours ago
CA $881
Roundtrip
found 11 hours ago
Select Air Canada flight, departing Sun, Sep 27 from Ottawa to London, returning Thu, Oct 15, priced at CA $881 found 11 hours ago
Air Canada
Thu, Oct 1 - Thu, Oct 8
YOW
Ottawa
LHR
London
CA $883 Roundtrip, found 15 hours ago
CA $883
Roundtrip
found 15 hours ago
Select Air Canada flight, departing Thu, Oct 1 from Ottawa to London, returning Thu, Oct 8, priced at CA $883 found 15 hours ago
Air Canada
Sun, Sep 27 - Tue, Oct 13
YOW
Ottawa
LHR
London
CA $885 Roundtrip, found 12 hours ago
CA $885
Roundtrip
found 12 hours ago
Select Air Canada flight, departing Sun, Sep 27 from Ottawa to London, returning Tue, Oct 13, priced at CA $885 found 12 hours ago
Austrian Airlines
Mon, Aug 31 - Sun, Sep 6
YOW
Ottawa
LHR
London
CA $894 Roundtrip, found 15 hours ago
CA $894
Roundtrip
found 15 hours ago
Select Austrian Airlines flight, departing Mon, Aug 31 from Ottawa to London, returning Sun, Sep 6, priced at CA $894 found 15 hours ago
Lufthansa
Wed, Sep 30 - Mon, Oct 12
YOW
Ottawa
LHR
London
CA $897 Roundtrip, found 12 hours ago
CA $897
Roundtrip
found 12 hours ago
Select Lufthansa flight, departing Wed, Sep 30 from Ottawa to London, returning Mon, Oct 12, priced at CA $897 found 12 hours ago
Virgin Atlantic
Mon, Oct 12 - Wed, Oct 21
YOW
Ottawa
LHR
London
CA $935 Roundtrip, found 1 day ago
CA $935
Roundtrip
found 1 day ago
Select Virgin Atlantic flight, departing Mon, Oct 12 from Ottawa to London, returning Wed, Oct 21, priced at CA $935 found 1 day ago
Air France
Mon, Sep 28 - Fri, Oct 9
YOW
Ottawa
LHR
London
CA $935 Roundtrip, found 23 hours ago
CA $935
Roundtrip
found 23 hours ago
Select Air France flight, departing Mon, Sep 28 from Ottawa to London, returning Fri, Oct 9, priced at CA $935 found 23 hours ago

Alternative airports near London

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

Select flight to Gatwick LGW. Average driving time to city centre is 52 minutes. Flights from CA $1,650
LGW
Gatwick
Average driving time to city centre52 min
Flights from CA $1,650
Select flight to London City LCY. Cheapest and Closest option available. Average driving time to city centre is 21 minutes. Flights from CA $1,242
LCY
London City
CheapestClosest
Average driving time to city centre21 min
Flights from CA $1,242

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

October is typically the cheapest month to fly

From CA $823 - CA $1,438 per traveller.

Frequently asked questions

How much does a flight from Ottawa, ON (YOW) to London (LHR) cost?
You can find cheap one-way flights from CA $716 and cheap return flights from CA $877 YOW to LHR with Expedia. One-way flights typically cost between CA$1,079 and CA$2,638 and return flights often range between CA$1,055 and CA$4,760. 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 YOW to LHR ticket fares go up or down.
What is the cheapest month to fly from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow)?
The cheapest months to fly from YOW to LHR are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow)?
Only one airline offers direct flights from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow). Air Canada operates 7 direct flights from YOW to LHR every week.
What is the cheapest airline that flies from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow)?
Air Canada is one of the cheapest airlines offering nonstop return flights from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow), with tickets starting from around CA$1029 for flights that can be booked for departure within the next year. For connecting return flights, KLM is one of the cheapest options, with tickets starting from around CA$1150 and a layover in Pierre Elliott Trudeau Intl. (YUL). These prices are per adult, for economy/coach class. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow)?
To find a cheap flight from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow), 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 Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow)?
The best airline to fly with from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow) 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 Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow), 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 Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow)?
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 Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow)?
There are approximately 66 connecting flights per day from Ottawa Macdonald-Cartier International Airport (YOW) to London Heathrow (LHR). Some common connection points include Pearson International (YYZ), Pierre Elliott Trudeau International (YUL), and Liberty International (EWR).
What is the earliest flight from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow)?
The earliest flight from Ottawa Macdonald-Cartier International Airport (YOW) to London Heathrow (LHR) typically departs around 5:00 AM local time. This service is operated by Air Canada. This is a seasonal service, active in January, February, March, April, November, and December. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow)?
You'll typically find the most flights from Ottawa Macdonald-Cartier International Airport (YOW) to London Heathrow (LHR) on a Thursday, with around 56 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Air Canada, United, and Porter Airlines. When looking at the entire week, Thursday offers notably more flight options compared to other days, ensuring you have plenty of choices.
What are the most popular departure times for flights from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow)?
The most popular departure times for flights from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow) are in the afternoon, from 3pm to 6pm. Many major carriers, including Air Canada, United and Air France, offer flights during this window. This timing works well because it allows you to have a productive morning before your flight and arrive in London in the evening.
How long does it take to fly from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow)?
A direct flight from Ottawa Macdonald-Cartier Intl. (YOW) to London Heathrow (LHR) typically takes around 6 hours 30 minutes. This route covers a distance of approximately 5,348 kilometers. If you opt for a flight with one stop, the journey usually takes longer, around 10 hours 18 minutes. Flights with two or more stops will extend your travel time further, typically to about 13 hours 48 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some flexibility in your travel plans.
Can you fly business or first class from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow)?
Yes, you can fly business class or first class between YOW and LHR. Airlines that offer business class service on this route include:
  • Air France
  • Lufthansa
  • Air Canada
  • Swiss International Air Lines
  • WestJet
  • United
First class cabins are available on Passaredo Transportes Aereos.
How much is a business class flight from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow)?
A direct, return business class ticket from Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow) typically costs between CA$5,473 - CA$11,338. A non-stop, one-way business class flight is usually around CA$8,173 - CA$8,203. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow) if you opt for a connecting flight.
How do I earn miles on a Ottawa, ON (YOW) to London (LHR) flight with Expedia?
It's easy to earn miles on a Ottawa, ON (YOW) to London (LHR) 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.
What airports do you fly into for London (LHR) from Ottawa, ON (YOW)?
If you're planning to travel to London from Macdonald-Cartier Intl. (YOW), you can fly directly into Heathrow (LHR). Some flights may connect through major hubs like Pearson Intl. (YYZ), Pierre Elliott Trudeau Intl. (YUL), or Washington Dulles Intl. (IAD) before reaching London. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Ottawa, ON (YOW) to London (LHR) at the last minute?
Typically, booking a last minute flight from Ottawa, ON (YOW) to London (LHR) 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 Ottawa, ON (YOW) to London (LHR) flight and hotel package?
Securing a Ottawa, ON (YOW) to London (LHR) 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 Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow)?
If you booked your Ottawa, ON (YOW-Macdonald-Cartier Intl.) to London (LHR-Heathrow) 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
Macdonald-Cartier Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, Austrian Airlines, British Airways, Brussels Airlines, KLM, LOT-Polish Airlines, Lufthansa, Swiss International Air Lines, TAP Portugal, United, Virgin Atlantic, WestJet
Roundtrip price
CA $876
Distance
5315 km
Average flight time
6 hours 35 mins

Book with confidence

Ottawa to London Flights

The easy way to book your flights from Ottawa to London 

With Expedia, it’s simple to find and book flights to London from Ottawa whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Heathrow, too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Ottawa to London today, tomorrow, or this week.  

 

Save dollars with cheap flights from Macdonald-Cartier Intl., YOW to Heathrow, LHR 

Sort your search results by price to find great deals on your flight from Ottawa to London—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to London from Ottawa currently is just CA $877 rising to CA $935.  

Here are more money-saving tips: 

  • Fly in October when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to London  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to London from Ottawa 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to London with Expedia today.

Ottawa to London Flights

Explore a world of travel with Expedia

*Available to Expedia members.