Ottawa to London
Ottawa to London is cheapest in October. September, the most expensive month we measured, costs about 37 € more.
Ottawa to London is 5,378 km flown direct. Every fare we measured came from WS.
That comes from pricing 98 departure dates across 6 months. Every figure below is a fare we measured on the day shown, not a live quote. When we have nothing fresh to say about a route, its page stops existing.
What is a good price from Ottawa to London?
Anything at or below the quarter mark beats three in four of the 98 one-way fares we measured here. Above the median, wait or move the date.
seen 27 Sep 2026
How far ahead do the cheap fares sit?
When we measured, the cheapest quarter of fares sat between 228 and 272 days before departure, noticeably further out than the rest of the market. If you can look a few months ahead, that is where the cheap seats are sitting.
a snapshot of where the cheap seats sat, seen 27 Sep 2026
Which day of the week is cheapest?
On average, Thursday departures came out lowest and Saturday highest, a spread of about 81 €. On this route the day moves the price about as much as the month does, which is unusual: check both before booking.
Is another London airport cheaper from Ottawa?
We price 2 airports for London from Ottawa. London Heathrow's floor is currently 64 € under London Gatwick's; weigh that against how each airport sits for the part of town you want.