Cheap flights from London to Ottawa

from as little as £520

6 nights in Ottawa, departing London Heathrow on 19 / Apr / 2023 with Air Canada (price found 3 hours ago)

Subject to availability, prices correct of the last 24 hours

Cheap return flights from London to Ottawa

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The London / Ottawa route

All 5382 km of it

Cheap flight deals for this route

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Ottawa flight facts

What you need to know

Alternative flights from the UK to Ottawa

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Alternative flights from London

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Today alone, Netflights has searched over 2,059 flights. 19 / Apr / 2023 is currently the lowest priced day of the year to fly the London/Ottawa route. There are around 336 flights on any given week from the UK to Ottawa and the cheapest month to fly right now is April.

Min / Max Temperature (°C)

-14 °C


6 °C


26 °C

Rainfall (mm)

58 mm


73.7 mm


86 mm

Key facts about Ottawa

How to get cheap flights from London to Ottawa

Tips and advice from our flight experts

Find a good deal on your flight from London to Ottawa with Netflights. 336 flights go via this route every week, and we've collected them all to help you find the best deal. If you want to keep your options open, take a look at flights from another airport in London.

London Heathrow (LHR) is the most popular airport in this city for flights to Ottawa, and the most popular airlines are Lufthansa, Brussels Airlines & Air Canada. Both flight prices and accommodation rates fluctuate throughout the year, but searching by month will reveal the cheapest times to fly.

The 5382 km journey from London to Ottawa takes at least 9 hrs 15 mins. On average, Air Canada have the cheapest flights, but check your search results, as this isn’t always the case. Another way to get a cheap flight is to book last minute – but this does mean you may not be able to get the exact flights you want.

Today alone, we’ve scanned 2,059 flights worldwide to bring you the best flight deals in one place. Did you know you can also compare hotel and car hire prices in Canada with Netflights? Take a look to get an idea of prices in Ottawa.

Other popular destinations near Ottawa

Where other people are flying to

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