€533 Cheap Flights Ottawa to London (YOW-LHR)

View €533 flight on Wed, 1 Apr 2026Opens 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 €533 for one-way flights and €648 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Virgin Atlantic
Wed, 1 Apr - Mon, 6 Apr
YOW
Ottawa
LHR
London
€648 Return, found 19 hours ago
€648
Return
found 19 hours ago
Select Virgin Atlantic flight, departing Wed, 1 Apr from Ottawa to London, returning Mon, 6 Apr, priced at €648 found 19 hours ago
Air France
Wed, 1 Apr - Mon, 6 Apr
YOW
Ottawa
LHR
London
€670 Return, found 19 hours ago
€670
Return
found 19 hours ago
Select Air France flight, departing Wed, 1 Apr from Ottawa to London, returning Mon, 6 Apr, priced at €670 found 19 hours ago
Air France
Wed, 1 Apr - Mon, 6 Apr
YOW
Ottawa
LHR
London
€692 Return, found 19 hours ago
€692
Return
found 19 hours ago
Select Air France flight, departing Wed, 1 Apr from Ottawa to London, returning Mon, 6 Apr, priced at €692 found 19 hours ago
KLM
Wed, 1 Apr - Mon, 6 Apr
YOW
Ottawa
LHR
London
€696 Return, found 19 hours ago
€696
Return
found 19 hours ago
Select KLM flight, departing Wed, 1 Apr from Ottawa to London, returning Mon, 6 Apr, priced at €696 found 19 hours ago
Air France
Wed, 1 Apr - Mon, 6 Apr
YOW
Ottawa
LHR
London
€719 Return, found 19 hours ago
€719
Return
found 19 hours ago
Select Air France flight, departing Wed, 1 Apr from Ottawa to London, returning Mon, 6 Apr, priced at €719 found 19 hours ago
Virgin Atlantic
Wed, 1 Apr - Mon, 6 Apr
YOW
Ottawa
LHR
London
€729 Return, found 19 hours ago
€729
Return
found 19 hours ago
Select Virgin Atlantic flight, departing Wed, 1 Apr from Ottawa to London, returning Mon, 6 Apr, priced at €729 found 19 hours ago
Aer Lingus
Wed, 1 Apr - Mon, 6 Apr
YOW
Ottawa
LHR
London
€736 Return, found 19 hours ago
€736
Return
found 19 hours ago
Select Aer Lingus flight, departing Wed, 1 Apr from Ottawa to London, returning Mon, 6 Apr, priced at €736 found 19 hours ago
Porter Airlines
Wed, 1 Apr - Mon, 6 Apr
YOW
Ottawa
LHR
London
€738 Return, found 19 hours ago
€738
Return
found 19 hours ago
Select Porter Airlines flight, departing Wed, 1 Apr from Ottawa to London, returning Mon, 6 Apr, priced at €738 found 19 hours ago
Air France
Wed, 1 Apr - Mon, 6 Apr
YOW
Ottawa
LHR
London
€741 Return, found 19 hours ago
€741
Return
found 19 hours ago
Select Air France flight, departing Wed, 1 Apr from Ottawa to London, returning Mon, 6 Apr, priced at €741 found 19 hours ago
Porter Airlines
Wed, 1 Apr - Mon, 6 Apr
YOW
Ottawa
LHR
London
€750 Return, found 19 hours ago
€750
Return
found 19 hours ago
Select Porter Airlines flight, departing Wed, 1 Apr from Ottawa to London, returning Mon, 6 Apr, priced at €750 found 19 hours ago

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

March is typically the cheapest month to fly

From €489 - €1,142 per traveller.
Ottawa to London route information
Origin airport
Macdonald-Cartier Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, KLM, LOT-Polish Airlines, Lufthansa, Swiss International Air Lines, TAP Portugal, United, Virgin Atlantic
Return price
€647
Distance
5315 km
Average flight time
6 hours 35 mins

Perfect flights from Ottawa to London

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Ottawa to London. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Macdonald-Cartier Intl. to Heathrow ticket options cater to your travel preferences, with incredible one-way fares from €533 and roundtrip prices from €648. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Heathrow and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in London.

Frequently asked questions

How much is a flight from Ottawa International Airport to Heathrow Airport (LHR)?
Round-trip tickets from Ottawa Intl. Airport to London Heathrow start from €648. This figure is based on fares listed within the last 7 days on Expedia for flights departing within the next year — book today to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from YOW to Heathrow Airport (LHR)?
Each air carrier has its own terms and conditions. If you do decide to cancel, follow the instructions on our Customer Service Portal.
How do I find cheap flights from YOW to Heathrow Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for YOW to Heathrow Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Ottawa Intl. Airport to London Heathrow?
You'll have 5,400 kilometres to cover on the long-haul Ottawa to Hounslow route. Wear layers of comfortable clothes and consider taking earplugs and a sleep mask.
Which airlines fly direct from Macdonald-Cartier Intl. Airport (YOW) to Heathrow Airport?
If you want to fly straight from Ottawa Intl. Airport to LHR, you'll have to book a flight with one or more stops. Unfortunately, there aren't any airlines that fly directly between these airports.
Are Ottawa International Airport to LHR flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from Ottawa International Airport to Heathrow Airport can be hit-or-miss. You may be able to score a great bargain, but you could also miss out entirely! If you'd prefer to play it safe and start your trip planning early on, Expedia compares flight deals up to a year in advance. Just keep in mind that not all airlines advertise their prices that far in advance. Our suggestion? Check back often as updates are made frequently.

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