The cheapest one-way ticket from Helsinki to London found recently is 20€, on 11 Dec (December 2026, direct). The most expensive month is June 2027, from 94€. Round trips start at 70€, in December 2026. There are direct flights, the shortest taking 2h 55m. Airlines on this route: Ryanair, Norwegian Air Sweden, Finnair.
Lowest fare by month
| Month | One way | Round trip |
|---|---|---|
| November 2026 | 28€14 Nov · direct | 93€14 Nov–31 Dec · direct |
| December 2026 | 20€11 Dec · direct | 70€11 Dec–31 Dec · direct |
| January 2027 | 31€15 Jan · direct | 97€6 Jan–15 Jan · direct |
| February 2027 | 40€23 Feb · direct | 72€5 Feb–7 Feb · direct |
| March 2027 | 46€16 Mar · direct | 83€2 Mar–5 Mar · direct |
| April 2027 | — | 82€5 Apr–7 Apr · direct |
| May 2027 | 54€13 May · direct | 120€1 May–4 May · direct |
| June 2027 | 94€19 Jun · direct | — |
| July 2027 | 51€15 Jul · direct | 173€13 Jul–15 Jul · 1 stop |
| August 2027 | — | 136€2 Aug–9 Aug · direct |
| September 2027 | 64€14 Sept · 1 stop | 121€16 Sept–24 Sept · direct |
Cheapest days in December 2026
One way, per adult. Blank days: nobody searched them lately.
At a glance
- Airports
- HEL → LGW · LTN · LCY · STN · SEN · LHR
- Airlines
- Ryanair, Norwegian Air Sweden, Finnair
- Direct flights
- Yes, direct fares were seen
The rest of the trip to London
- Internet when you land ↗An eSIM for the country, set up before you fly. Handy outside the EU, or when roaming costs extra.
- A ride from the airport ↗A driver waiting at arrivals, at a fixed price.
- Things to do in London ↗Tickets for museums, tours and sights.
Flight delayed by three hours or more, or cancelled? Under EU rules you may be owed up to €600. Check your claim.
Frequently asked questions
How much is a flight from Helsinki to London?
The cheapest one-way ticket found recently is 20€, in December 2026. A round trip starts at 70€. Fares are per adult and change often.
What is the cheapest month to fly from Helsinki to London?
December 2026, from 20€ one way. The most expensive is June 2027, from 94€.
Are there direct flights from Helsinki to London?
Yes, direct fares were found on this route in recent days.
How long is the flight from Helsinki to London?
The shortest flight found takes 2h 55m.
Which airlines fly from Helsinki to London?
Ryanair, Norwegian Air Sweden, Finnair.
Which airports do flights from Helsinki to London use?
They leave from HEL and land at LGW, LTN, LCY, STN, SEN, LHR.
Want to know when it gets cheaper?
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Watch this routeFares are the lowest travellers found in recent days' searches, per adult. They change: check the price before you book. Booking links go to our travel partner and are affiliate links: if you book through them we earn a small commission, at no cost to you.