Cheap flights from London to Ottawa from £248
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Ottawa departing on 5/9. 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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How to get the cheapest flight ticket from London to Ottawa
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 Ottawa?
In general, January is the cheapest month to fly from London to Ottawa. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £458. If you aren’t able to travel during the month of January, then book flights to Ottawa from London during February instead. Flights to Ottawa in February, while not as cheap as those in January, still average around £467.
What is the cheapest day to depart on your flight to Ottawa?
The cheapest day to depart on your flight to Ottawa is on a Thursday when prices can be found for as low as £534. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around £594. These prices are subject to change though, so be sure to set up a Price Alert for flights to Ottawa.
What is the cheapest time of day to depart on your flight to Ottawa?
Flying to Ottawa from London in the evening is the least expensive time of day to depart. momondo users have found prices as low as £470 when looking at flights departing in the evening. In the morning is when there is more demand to fly to Ottawa, so prices are often more expensive at around £570 per ticket.
What is the cheapest London to Ottawa flight route?
Fly from London Heathrow to Ottawa for the best London - Ottawa flight prices
How far in advance should I book a flight to Ottawa?
You are more likely to see cheaper flights to Ottawa from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Ottawa for around £558 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ottawa from London for as low as £399 on momondo.
What cabin class options are available on London to Ottawa flights?
There are 3 cabin classes available to choose from on London to Ottawa 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 London to Ottawa flights?
You could potentially save up to 34% on your flight if you consider stops on a London to Ottawa flight.
How have London to Ottawa flight prices changed over time?
As of July 2025, prices for London to Ottawa flights are approximately 37% cheaper when compared to flights at the same time last year.
How many flights depart from London to Ottawa on average per day?
The number of flights available between London and Ottawa is 4 per day as of July 2025. The most frequent departure time is 12:00, with 100% of daily flights leaving in the afternoon.
How many flights depart from London to Ottawa on average per week?
The number of flights available between London and Ottawa is 28 per week as of July 2025. The most frequent departure day is Mon, with 25% of weekly flights leaving on this day.
When to book flights from London to Ottawa
Cheap London to Ottawa (LON to YOW) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London to Ottawa
Best price found | £248 |
|---|---|
Fastest flight time | 7h 20m |
Direct flights | Tue, Thu, Fri and Sun |
Airports in Ottawa | 1 airport |
How far is London to Ottawa by plane?
The straight-line distance from London to Ottawa is 3329.4 mi. In terms of flight time, this usually takes a little over 7h 20m.
When did momondo last update prices for flights from London to Ottawa Airport?
Prices for flights from London to Ottawa Airport are updated daily.
How many operators does momondo search for flights from London to Ottawa Airport?
As of July 2025, there are 7 operators available to choose from for flights from London to Ottawa Airport.
How old do you have to be to fly from London to Ottawa 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 London to Ottawa Airport.
What documentation or ID do you need to fly to Ottawa Airport?
The travel and health documents you'll need for your trip to Ottawa 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 Ottawa 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 London to Ottawa?
Based on momondo bookings for flights between London and Ottawa, the leading plane model is Boeing 787-9 Dreamliner, making up 44.27% of the total bookings. Other popular models include Boeing 777 with 21.81%, Boeing 777-200LR with 6.88%, and Airbus A319 with 6.02%.
What is the most popular airline from London to Ottawa?
momondo data reveals that the most frequently booked airline on the route from London to Ottawa is Air Canada, representing 58% of all bookings. The subsequent popular airlines are Air Transat at 13%, Lufthansa at 10%, and Air France at 10%.
Best airlines flying from London to Ottawa
Compare and see reviews for airlines that fly from London to Ottawa with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £299 | Free Cancellation | Rating 7.1 9,681 reviews | |||
| PriceFrom £333 | Free Cancellation | Rating 7.4 8,844 reviews | |||
| PriceFrom £355 | Free Cancellation | Rating 7.8 1,367 reviews | |||
| PriceFrom £359 | Free Cancellation | Rating 7.5 1,465 reviews | |||
| PriceFrom £371 | Free Cancellation | Rating 7.4 654 reviews | |||
| PriceFrom £405 | Free Cancellation | Rating 7.8 407 reviews | |||
| PriceFrom £440 | Free Cancellation | Rating 6.8 7,207 reviews |
United Airlines Flights From London to Ottawa
The lowest priced United Airlines flight from London to Ottawa from the last 72 hours was £454. Generally, United Airlines has 4 flights on this route every week with an average price of £473. United Airlines is rated 7.4/10 by our users.
Air Canada Flights From London to Ottawa
Across 9,681 Air Canada reviews on momondo, the average score is 7.1/10. Air Canada flies from London to Ottawa about 4 times each week, with ticket deals ranging from £408 to £588. Price data is based on momondo searches in the last 72 hours.
Why use momondo?
Why should I use momondo to find a flight deal from London to Ottawa?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Ottawa for you.
Can I find flights from London to Ottawa with flexible booking policies on momondo?
Flights from London to Ottawa 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 London to Ottawa?
Once all potential London to Ottawa 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 London to Ottawa right now. Can momondo alert me if prices change?
Price alerts on flights to Ottawa from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.