Cheap flights from Ottawa to London from C$ 439
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ottawa to London departing on 7/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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United Airlines flights from Ottawa to London Heathrow Airport
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Aer Lingus flights from Ottawa to London Heathrow Airport
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How to get the cheapest flight ticket from Ottawa to London Heathrow Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to London Heathrow Airport?
The month of February is, on average, the cheapest month to fly to London Heathrow Airport from Ottawa, with most prices found around C$ 957. If you aren’t able to travel to London Heathrow Airport during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of C$ 968.
What is the cheapest day to depart on your flight to London Heathrow Airport?
According to our data, Thursday is the cheapest day to fly to London Heathrow Airport from Ottawa. The lowest ticket price found for a Thursday departure recently was C$ 1,058. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ottawa to London Heathrow Airport for around C$ 1,216.
What is the cheapest time of day to depart on your flight to London Heathrow Airport?
Our data shows that the cheapest Ottawa to London Heathrow Airport flights are usually those with departure times in the evening. Our users have found flights to London Heathrow Airport in the evening for as low as C$ 1,077. At noon is when there is more demand to fly to London Heathrow Airport, so prices are often more expensive at around C$ 1,103 per ticket.
What is the cheapest Ottawa to London Heathrow flight route?
Fly from Ottawa to London Heathrow for the best Ottawa - London Heathrow flight prices
How far in advance should I book a flight to London Heathrow Airport?
You are more likely to see cheaper flights to London Heathrow Airport from Ottawa when booking 12 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around C$ 1,061 when searching 12 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Ottawa for as low as C$ 987 on momondo.
What cabin class options are available on Ottawa to London Heathrow flights?
There are 3 cabin classes available to choose from on Ottawa to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Ottawa to London Heathrow Airport flights?
No. A direct flight is the cheapest option for a flight between Ottawa to London Heathrow Airport.
How have Ottawa to London Heathrow Airport flight prices changed over time?
As of June 2025, prices for Ottawa to London Heathrow Airport flights are approximately 11% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Ottawa to London Heathrow?
WestJet, Air Canada, and Lufthansa are the most popular carriers operating from Ottawa to London Heathrow
Which airlines fly to London Heathrow Airport?
Air Canada, British Airways and Lufthansa are the top three most popular airlines that fly to London Heathrow Airport from Ottawa according to our data. Air Canada is the first choice among our users, with 65% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 11 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.
When to book flights from Ottawa to London Heathrow Airport
Cheap Ottawa to London Heathrow Airport (YOW to LHR) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ottawa to London Heathrow Airport
How far is Ottawa to London Heathrow by plane?
There are 5338.5 km between Ottawa and London Heathrow. 6h 35m is a normal flight duration for this route.
When did momondo last update prices for flights from Ottawa Airport to London Heathrow Airport?
Prices for flights from Ottawa Airport to London Heathrow Airport were last updated today.
How many operators does momondo search for flights from Ottawa Airport to London Heathrow Airport?
As of June 2025, there are 5 operators available to choose from for flights from Ottawa Airport to London Heathrow Airport.
How old do you have to be to fly from Ottawa Airport to London Heathrow Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ottawa Airport to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Ottawa to London Heathrow Airport?
momondo data reveals that the most frequently booked plane model on the route from Ottawa to London Heathrow Airport is Boeing 787-9 Dreamliner, representing 76.39% of all bookings. The subsequent popular models are Airbus A321neo at 5.56%, Boeing 787-8 Dreamliner at 5.56%, and Airbus A330-200 at 4.17%.
What is the most popular airline from Ottawa to London Heathrow Airport?
momondo data reveals that the most frequently booked airline on the route from Ottawa to London Heathrow Airport is Air Canada, representing 80% of all bookings. The subsequent popular airlines are Lufthansa at 10%, Air France at 7%, and Virgin Atlantic at 2%.
Best airlines flying from Ottawa to London Heathrow Airport
Compare and see reviews for airlines that fly from Ottawa to London Heathrow Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom C$ 725 | Free Cancellation | Rating 7.4 652 reviews | |||
| PriceFrom C$ 725 | Free Cancellation | Rating 7.5 1,463 reviews | |||
| PriceFrom C$ 890 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom C$ 896 | Free Cancellation | Rating 7.1 9,537 reviews | |||
| PriceFrom C$ 939 | Free Cancellation | Rating 6.7 7,139 reviews |
United Airlines Flights From Ottawa to London Heathrow Airport
United Airlines operates around 1 flight from Ottawa to London Heathrow Airport every week. The average price of these flights found in the last 72 hours has been C$ 711, but momondo users have found United Airlines deals from Ottawa to London Heathrow Airport from as low as C$ 651 round-trip. United Airlines has been scored 7.4/10 in 8,790 reviews.
Air Canada Flights From Ottawa to London Heathrow Airport
Air Canada is also a popular choice for this route. Air Canada flight deals for Ottawa to London Heathrow Airport start from as low as C$ 655 round-trip, depending on your selected dates, with average Air Canada deals seen on momondo around C$ 759. Air Canada operates 1 flight to London Heathrow Airport from Ottawa in an average week. Users have rated it 7.1/10 across 9,537 reviews.
Travelling to a place near London?
Book flights to London if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Ottawa to London?
It is quick and easy to find Ottawa to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.
Can I find flights from Ottawa to London with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Ottawa to London flights to just show those with flexible booking policies.
How can momondo help me find flights from Ottawa to London?
Once all potential Ottawa to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Ottawa to London right now. Can momondo alert me if prices change?
If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Ottawa and alert you when they change.