Flights from London to Helsinki

The cheapest round-trip from London to Helsinki is about 65 EUR, usually in October 2026; June 2026 is priciest, so booking the low month saves around 194 EUR (~75%). Typical fare ~90 EUR, from 331 priced fares. Flightmussy live data, updated 2026-06-13.

Cheap flights from London (LHR/LGW/STN/LTN/LCY) to Helsinki (HEL). Free, no signup, no ads, no tracking. Compare every airline across 12 months of fares on one heatmap — including low-cost carriers Google Flights often deprioritises.

Fare insights: London to Helsinki

Cheapest round-trip seen: 65 EUR, usually around October 2026. Typical fare ~90 EUR. Across the year prices range roughly 65–259 EUR — about 75% cheaper in the low season than the peak (June 2026). Carriers on this route include Scandinavian Airlines, Air France, KLM, Finnair.

Based on Flightmussy's live 12-month fare data; prices last updated 2026-06-13. Prices change constantly — search live for current fares.

Cheapest fare by month: London to Helsinki

The lowest round-trip fare we found for each month over the coming year — low season versus peak at a glance. October 2026 is cheapest; June 2026 is priciest.

Jun 2026259 EUR
Jul 2026211 EUR
Aug 2026120 EUR
Sep 202668 EUR
Oct 202665 EUR
Nov 202665 EUR
Dec 202674 EUR
Jan 202790 EUR
Feb 202790 EUR
Mar 202790 EUR
Apr 2027105 EUR
May 2027105 EUR

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Frequently asked questions

What is the cheapest month to fly from London to Helsinki?
The cheapest round-trip fares from London to Helsinki start around 65 EUR and are typically lowest in October 2026; June 2026 is the most expensive. Fares swing about 75% across the year. (Flightmussy live data, updated 2026-06-13.)
How much does a flight from London to Helsinki typically cost?
Typical round-trip is ~90 EUR; across the year fares run 65–259 EUR, cheapest 65 EUR in October 2026. Based on 331 priced fares, updated 2026-06-13.
How much can I save flying London to Helsinki in the cheapest month?
Booking the October 2026 low instead of the June 2026 peak saves about 194 EUR (~75%) per round-trip. Updated 2026-06-13.
Which airlines fly from London to Helsinki?
Carriers seen on London → Helsinki in recent searches: Scandinavian Airlines, Air France, KLM, Finnair. Flightmussy compares every carrier serving London → Helsinki, including budget airlines like Ryanair, easyJet, Wizz Air and AirAsia that Google Flights often deprioritises.
Do I need to sign up to search flights from London to Helsinki?
No. Flightmussy is free and requires no account, no email, and no credit card. Search, compare, and click through to book directly with the airline or booking partner.

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About Flightmussy

Flightmussy is a free, independent flight search for travellers anywhere in the world. No signup, no ads, no tracking — email is optional, only for route price alerts. Compare fares across every airline and see 12 months of prices at a glance, including the low-cost carriers Google Flights often buries. Book directly with the airline or a trusted partner — we never add a markup.

Flight price data & research

Flightmussy runs its own 12-month forward fare scans across thousands of routes worldwide and publishes the data openly. Read the cheapest month to fly almost anywhere → — a global study of when fares are lowest — or browse the cheapest destinations from a city:

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