Cheap Flights from Ottawa to London

Compare Ottawa to London flight deals

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

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Flight deals from Ottawa to London

Looking for a cheap last-minute deal or the best return flight from Ottawa to London Airport? If you want to travel next month, return fares start from R 8,306. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Ottawa to London

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

Ottawa to London: Alternative routes

Compare routes from Ottawa to London below. You may find an airport to fly into that's cheaper, faster, or easier than London.

Ottawa to London: Flight information

The things to know before you go.
Cheapest flight foundR 3,516
Cheapest month to flyMay

Finding cheap flights from Ottawa to London: Frequently asked questions

The best price we found for a return flight from Ottawa to London is R 7,879. 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 Ottawa to London. But we found flights with one stop from R 7,879.
As of April 2026, there are no flights flying from Ottawa to London.
The cheapest month to fly from Ottawa to London is usually June.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Ottawa to London Airport on Thursday, 11 June 2026.
No airlines currently offer direct flights between Ottawa and London Airport. 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 London 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.
The cheapest airline that flies to London is Air Canada .

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

  • London International Airport is located in London. The city's timezone is UTC-5, which is the same as Ottawa.

  • Leave plenty of time to catch your flight from Ottawa to YXU. As a rule of thumb, arrive at least two hours before international departures and an hour ahead for domestic flights.

  • During popular months like August, you'll want to get to the airport even earlier. Plan to arrive two hours before a domestic departure and four hours ahead of international flights whenever you're travelling during peak periods in general.

Airports in Ottawa

Ottawa Macdonald-Cartier International Airport (YOW)

  • YOW is around 14 kilometres from central Ottawa. If you're catching a taxi, driving or ride-sharing from the centre, it'll take you 20 minutes or so to get there, depending on the traffic. If you're using public transport, expect the journey time to be around 35 minutes.

  • Planning to catch an early flight from Ottawa to London International Airport? Avoid the mad dash to the terminal (and sneak in some extra snooze time) by picking one of these hotels near Ottawa Macdonald-Cartier International Airport:

  • Of all flights leaving Ottawa Macdonald-Cartier International Airport, 58% land on time at their destination.

  • You'll find YOW at 50 Airport Road.

About London International Airport (YXU)

Getting from London International Airport (YXU) to central London

  • Central London is roughly 10 kilometres from London International Airport. Journey times by car hire or taxi will vary depending on time of day, so do some research ahead of time.

  • If you're taking public transport, expect a journey of about 35 minutes.

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

  • R 3,516 is the best price for a one-way ticket from Ottawa to London International Airport. Return flights start from R 7,879. These prices can change based on demand and availability.

  • Don't wait until the last minute. You're more likely to find cheap flights from Ottawa to YXU if you book in advance. Airlines often offer some great early bird discounts.

  • If you're flexible with your travel dates, use the 'Whole month' search tool. It'll give you the lowest price in each month when searching for your Ottawa to London International Airport ticket.

  • You don't need to check every day to find out if prices have dropped when you set up a Price Alert. We'll notify you as soon as a better deal is available on plane tickets from Ottawa to YXU.

  • Filters make it easier to scoop up a deal on your flight from Ottawa to London International Airport. Choose the flight times, carriers and stops that work for you. Then sort the results by 'Cheapest' to zero in on the cheapest fare fast.

The best time to fly from Ottawa to London International Airport (YXU)

  • Think about the kind of holiday you want when deciding the best time to fly. November is the quietest month to visit London. August is when most people book flights from Ottawa to London International Airport (YXU), which may be perfect if you'd rather travel when it's busy.

  • The warmest month in London is July, with temperatures ranging between 13ºC (55ºF) and 27ºC (81ºF). Book your Ottawa to YXU plane ticket then if that's your ideal forecast.

  • If you want cooler conditions, search for a cheap ticket from Ottawa to London International Airport in January when temperatures are between -13ºC (9ºF) and 2ºC (36ºF).

More about London

  • Start your London trip off on the right foot by choosing the ideal place to stay. As soon as you've booked your flight from Ottawa to London International Airport, explore our selection of hotels including:

  • Your trip to London should come with a bit of sightseeing. Major attractions that are worth your time include Forks of the Thames River, Falls View Park and Fanshawe Pioneer Village.

Explore more of Canada

  • You've visited London, now it's time to explore other corners of Canada. Travel about 161 kilometres northeast to Toronto to tick off its must-visit sights. From CN Tower to The Top CN Tower and Royal Ontario Museum, your itinerary will be busy.

  • Around 137 kilometres northeast of London, Mississauga is another favourite stop in Canada. Experience major highlights starting with Lake Ontario, Lake Aquitaine Trail and Mississauga Valley Park.

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