Cheap flights from Helsinki to London
The cheapest return and one-way flights from Helsinki to London for the next 12 months, plus the cheapest departure dates and weekend trips. Compare and book on Aviasales.
- Cheapest return
- from €59
- Cheapest month: November 2026
- Cheapest one-way
- from €16
- Cheapest month: November 2026
- Typical price (return)
- €112
- Median of 20 departure dates over the next ~4 months
- Direct flights
- Found
- In recent searches: Finnair and Ryanair
- Typical flight time
- 3 h 3 min
- Outbound, direct flights
- Airlines
- 4 airlines
- Finnair, Norwegian Air International, Ryanair and SAS
Prices are based on searches from the last few days (updated 24 Sep 2026, 15:56 Finnish time). Prices change – check the final price on the booking site.
Price calendar: cheapest price by month
| Departure month | Return from | One-way from |
|---|---|---|
| September 2026 | no price | one-way · Heathrow |
| October 2026 | return · Stansted | one-way · Stansted |
| November 2026cheapest | return · Stansted | one-way · Stansted |
| December 2026 | return · Stansted | one-way · Stansted |
| January 2027 | return · Stansted | no price |
| February 2027 | return · Gatwick | no price |
| March 2027 | no price | no price |
| April 2027 | return · Stansted | one-way · Gatwick |
| May 2027 | no price | no price |
| June 2027 | no price | no price |
| July 2027 | no price | no price |
| August 2027 | no price | no price |
5 cheapest departure dates (return, next 90 days)
Mon 16 Nov – Sun 22 Nov · 6 nights
Ryanair · out direct · back direct · Stansted
View flights€59
return
Fri 20 Nov – Sun 22 Nov · 2 nights
Ryanair · out direct · back direct · Stansted
View flights€60
return
Fri 13 Nov – Wed 18 Nov · 5 nights
Ryanair · out direct · back direct · Stansted
View flights€62
return
Fri 4 Dec – Thu 10 Dec · 6 nights
Ryanair · out direct · back direct · Stansted
View flights€64
return
Mon 2 Nov – Thu 5 Nov · 3 nights
Ryanair · out direct · back direct · Stansted
View flights€69
return
Weekend trips (return, Fri → Sun/Mon)
Fri 23 Oct – Mon 26 Oct · 3 nights
Ryanair · out direct · back 1 stop · Stansted
View flights€232
return
Fri 30 Oct – Sun 1 Nov · 2 nights
SAS · out 1 stop · back direct · Heathrow
View flights€131
return
Fri 6 Nov – Mon 9 Nov · 3 nights
Ryanair · out direct · back 1 stop · Stansted
View flights€120
return
Fri 13 Nov – Mon 16 Nov · 3 nights
Ryanair · out direct · back 1 stop · Stansted
View flights€109
return
Prices are based on searches from the last few days (updated 24 Sep 2026, 15:56 Finnish time). Prices change – check the final price on the booking site.
About London
Many of London's major museums, such as the British Museum and the National Gallery, are free to visit. The city offers theatres, markets and parks for every taste, and it has several airports.
London works all year round; May–September has the longest days and the warmest weather.
Frequently asked questions
When are flights to London cheapest?
Based on searches from the last few days, the cheapest return flight to London is in November 2026: from €59. Other good-value months are December 2026 (€64) and October 2026 (€83). The cheapest one-way flight costs from €16 (November 2026).
Are there direct flights from Helsinki to London?
Yes. Searches from the last few days found direct flights from Helsinki to London (Finnair and Ryanair).
How much does a flight to London cost on average?
The median return fare for departures over the next four months or so is €112 (based on 20 departure dates). The lowest prices are: return from €59 and one-way from €16.