Cheapest one-way flights from London to Helsinki in October 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 October 2025 (see full year).

One-Way flights

30 Oct Scandinavian Airlines
12 Oct Scandinavian Airlines
08 Oct Scandinavian Airlines
08 Oct Finnair direct
12 Oct Finnair direct
30 Oct Finnair direct
03 Oct British Airways direct

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

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