AirHint found the following cheapest one-way flights from Helsinki (HEL) to London (STN) in May 2026 (see full year).

One-Way flights

06 May	Ryanair	direct
19 May	Ryanair	direct
12 May	Ryanair	direct
04 May	Ryanair	direct
11 May	Ryanair	direct
05 May	Ryanair	direct
21 May	Ryanair	direct
18 May	Ryanair	direct
03 May	Ryanair	direct
08 May	Ryanair	direct

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

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.

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Cheapest one-way flights from Helsinki to London in May from $42

One-Way flights