Cheapest one-way flights from London to Helsinki in December from $103

Best time to book flights for London (LHR) to Helsinki (HEL) flights at AirHint

AirHint found the following cheapest one-way flights from London (LHR) to Helsinki (HEL) in December 2025 (see full year).

One-Way flights

01 Dec Scandinavian Airlines
01 Dec Finnair direct
07 Dec British Airways
14 Dec Scandinavian Airlines
31 Dec Finnair direct
04 Dec Finnair direct
26 Dec Finnair direct
15 Dec Finnair direct
25 Dec Lufthansa
30 Dec Lufthansa

Also check the deals for return flights from London to Helsinki in December.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Helsinki

Cheap car rent in Helsinki