Helsinki to London
Helsinki to London is cheapest in October. August, the most expensive month we measured, costs about 140 € more.
Helsinki to London is 1,781 km flown direct. Every fare we measured came from Ryanair.
That comes from pricing 327 departure dates across 12 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 Helsinki to London?
Anything at or below the quarter mark beats three in four of the 327 one-way fares we measured here. Above the median, wait or move the date.
seen 18 Aug 2026
How far ahead do the cheap fares sit?
When we measured, the cheapest quarter of fares sat between 88 and 168 days before departure, closer in than the market as a whole. The cheap fares were on nearer dates, not months away, when we looked.
a snapshot of where the cheap seats sat, seen 18 Aug 2026
Which day of the week is cheapest?
On average, Tuesday departures came out lowest and Friday highest, a spread of about 18 €. The day matters less than the month here: pick the month first, then the day.