371 € Cheap Flights from London to Ottawa

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Find the cheapest month or even day of the year to fly to Ottawa

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Flight deals from London to Ottawa

Looking for a cheap last-minute deal or the best return flight from London Airport to Ottawa? If you want to travel next month, return fares start from 371 €. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from London to Ottawa

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London to Ottawa flights are currently cheapest in May.

Alternative London to Ottawa routes

Looking for the cheapest, fastest or easiest route from London to Ottawa? You could fly into the following airports instead.

London to Ottawa: Flight information

The things to know before you go.
Cheapest flight found191 €
Cheapest month to flyApril

Finding cheap flights from London to Ottawa: Frequently asked questions

There are 2 airports in Ottawa: Ottawa International and Ottawa Gatineau.
The best price we found for a return flight from London to Ottawa is 371 €. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from London to Ottawa. But we found flights with one or more stops from 371 €.
As of April 2026, there are no flights flying from London to Ottawa.
The cheapest month to fly from London to Ottawa is usually May.
If you're flying from London Airport, the cheapest airport near Ottawa is Ottawa International – which is 11.2 km away from the centre of Ottawa. We've found flights into this airport from 371 €.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Airport to Ottawa on Saturday, 23 May 2026.
No airlines currently offer direct flights between London Airport and Ottawa. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Ottawa but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Ottawa is around 40 days in advance, so don’t leave your flight to the last minute.
In April, the average temperature is usually around 6°C. July is typically the warmest month in Ottawa, when it usually averages around 25°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -16°C. The rainiest month is June.
Currently, Air Canada offers the cheapest flight tickets to Ottawa.

Travelling from London International Airport (YXU) to Ottawa: what you need to know

  • Ottawa's timezone is UTC-4, which is the same as London (the location of London International Airport).

  • Leave enough time to catch your YXU to Ottawa flight. Generally, it's best to arrive two hours before international departures and an hour ahead for domestic flights.

  • You'll likely experience longer lines in popular months like August. Arriving up to four hours ahead of international flights and two hours for domestic departures is a good idea.

  • Travelling from central London to YXU takes about 55 minutes on public transport. If you drive, ride-share or grab a cab, you'll cover the 10 kilometres in 20 minutes or so, depending on traffic conditions.

  • Have an early flight from London International Airport to Ottawa? Avoid the last-minute rush to the terminal (and sneak in some extra precious sleep) by choosing one of these stays close to YXU:

  • Of all flights leaving London International Airport, 50.41% touch down on time at their destination.

How to find the cheapest flights from London International Airport (YXU) to Ottawa

  • 191 € is the lowest price we've found for a one-way London International Airport to Ottawa flight. A round-trip plane ticket right now is 371 €. Depending on when you book and the availability, these fares may change.

  • To pick up cheap flights from YXU to Ottawa, book as early as possible. Airlines tend to offer lower prices when flights first go on sale.

  • Scoring cheap tickets from London International Airport to Ottawa is more likely if you can be flexible with your trip dates. Try using the 'Whole month' search tool to access the lowest prices across each month and score a sweet deal.

  • Snapping up a cheap flight from YXU to Ottawa couldn't be easier with Price Alerts. Simply create one of these automatic notifications and we'll notify you when there's a better deal.

  • Tailor your trip with filters. Choose your arrival and departure times, airlines and total journey duration. You can also sort results by 'Best,' 'Cheapest' or 'Fastest' flights from London International Airport to Ottawa.

Airports in Ottawa

Ottawa Gatineau Airport (YND)

  • The distance from Ottawa Gatineau Airport (YND) to central Ottawa is roughly 24 kilometres. It'll take you around 20 minutes to reach the centre driving.

  • It takes around 1 hour 40 minutes to get there by public transport.

  • Touching down on a late flight from London International Airport to Ottawa? Collect your bags and head directly to the convenience of a nearby hotel. Two good choices close to YND are Meilleure Auberge and Lovely Room 4mins From Gatineau-Ottawa Airport.

  • Pick up an Ottawa Gatineau Airport rental car and discover corners of Ottawa that most visitors tend to miss. Book your wheels with Hertz.

  • To get the lowest possible price, book your vehicle from Ottawa Gatineau Airport a few weeks ahead of your flight from YXU to Ottawa. Prices generally rise closer to your travel date.

Ottawa/Macdonald-Cartier International Airport (YOW)

  • The centre of Ottawa is around 13 kilometres from Ottawa/Macdonald-Cartier International Airport (YOW). After your flight from London International Airport to Ottawa has landed and you've made your way out of the airport, expect a drive of around 20 minutes.

  • If you travel by public transport, the ride to the centre will take you 45 minutes or so.

  • There are some great places to park your luggage (and yourself) near YOW. Settle in and get cosy after your YXU to Ottawa flight at one of these perfectly located options:

  • Forget about public transport timetables or waiting in a long cab line. Pick up an Ottawa/Macdonald-Cartier International Airport rental car and go in any direction that inspires you. Compare offers from Routes Car Rentals, Alamo and Budget.

  • Secure your first choice, not your last resort. Booking your ride from YOW two weeks in advance often means better deals and a wider choice of vehicles.

  • The address for Ottawa/Macdonald-Cartier International Airport is 50 Airport Road.

Best time to go to Ottawa

  • Carefully consider your dates before locking in your flight from London International Airport to Ottawa. The city buzzes in peak season, but rates are usually higher and major attractions can be busy. Go to Ottawa in low season if you like a more relaxed vibe.

  • The warmest month in Ottawa is July, with temperatures ranging between 13ºC (55ºF) and 27ºC (81ºF). Lock in your London International Airport to Ottawa plane ticket then if you enjoy this type of weather.

  • Look for cheap tickets from YXU to Ottawa in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between -19ºC (-2ºF) and -2ºC (28ºF) on average.

More about Ottawa

  • When it comes to searching for somewhere to rest your head, you'll find the top stays in Ottawa right here. Explore these options after locking in your flight from London International Airport to Ottawa:

  • Rideau Canal and Parliament Hill are a couple of popular attractions to add to your Ottawa must-do list. Continue your sightseeing adventures at National Gallery of Canada.

Explore more of Canada

  • Toronto is just one of the many places in Canada waiting to be discovered once you've taken in the sights of Ottawa. Around 354 kilometres away to the south-west, top sights here include CN Tower, Royal Ontario Museum and Go Tours Canada - Distillery District.

  • Montreal is another well-known destination in Canada and is around 153 kilometres east of Ottawa. No trip is complete without visiting Mount Royal Park, Montreal Botanical Garden and Saint Joseph's Oratory of Mount Royal.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.