Cheap flights from Ottawa to London from £236
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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Air Canada flights from Ottawa to London Heathrow Airport
Our best Air Canada deals on Ottawa to London Heathrow Airport flight tickets
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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?
In general, February is the cheapest month to fly from Ottawa to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £515. The month of January is another great option to travel to London Heathrow Airport, with average flight prices from Ottawa averaging around £521.
What is the cheapest day to depart on your flight to London Heathrow Airport?
On average, the least expensive day to fly to London Heathrow Airport from Ottawa is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £520. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Sunday is £643.
What is the cheapest time of day to depart on your flight to London Heathrow Airport?
According to our data, the cheapest time of day to fly to London Heathrow Airport is in the afternoon. momondo users have found flights departing from Ottawa to London Heathrow Airport in the afternoon for as low as £535. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £612 on average. Flights to London Heathrow Airport from Ottawa at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.
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 £571 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 £531 on momondo.
What cabin class options are available on Ottawa to London Heathrow flights?
There are 2 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 Finnair 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 69% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 3 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from Ottawa to London Heathrow Airport on average per day?
1 flights are operational daily from Ottawa to London Heathrow Airport as of June 2025. The most popular departure time for this route is 21:00, with 100% of flights per day taking off in the evening.
How many flights depart from Ottawa to London Heathrow Airport on average per week?
7 flights are operational weekly from Ottawa to London Heathrow Airport as of June 2025. The most popular departure day for this route is Thu, with 100% of flights per week taking off on this day.
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 3317.2 mi between Ottawa and London Heathrow. Flights usually cover this in 6h 35m, depending on flying conditions and air traffic around both airports.
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 are updated daily.
How many operators does momondo search for flights from Ottawa Airport to London Heathrow Airport?
There is 1 operator available for flights from Ottawa Airport to London Heathrow Airport as of June 2025.
How old do you have to be to fly from Ottawa Airport to London Heathrow Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for 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?
Based on momondo bookings for flights between Ottawa and London Heathrow Airport, the leading plane model is Boeing 787-9 Dreamliner, making up 76.39% of the total bookings. Other popular models include Airbus A321neo with 5.56%, Boeing 787-8 Dreamliner with 5.56%, and Airbus A330-200 with 4.17%.
What is the most popular airline from Ottawa to London Heathrow Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Ottawa to London Heathrow Airport is Air Canada (100% of total bookings).
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 £474 | Free Cancellation | Rating 7.1 9,537 reviews |
Air Canada Flights From Ottawa to London Heathrow Airport
Across 1 Air Canada flight from Ottawa to London Heathrow Airport this week, the average price was £821, with the best Air Canada deals starting from £644 round-trip. 9,539 users have rated Air Canada on momondo, with an average score of 7.1/10.
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Why should I use momondo to find a flight deal from Ottawa to London?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ottawa to London. momondo saves you time and could save you money on your trip.
Can I find flights from Ottawa to London with flexible booking policies on momondo?
Flights from Ottawa to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Ottawa to London?
momondo helps you find the best flight between Ottawa and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
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.