AirHint found the following cheapest return flights from London (LGW) to Tromso (TOS) in May 2026 (see full year).

Return flights

07 May - 14 May	Norwegian
30 May - 06 Jun	Ryanair
01 May - 10 May	Norwegian
01 May - 06 May	Norwegian
20 May - 23 May	Norwegian
01 May - 05 May	Norwegian
01 May - 08 May	Norwegian
22 May - 26 May	SWISS
04 May - 10 May	Norwegian
22 May - 25 May	Norwegian
22 May - 24 May	Norwegian
19 May - 02 Jun	Norwegian
20 May - 02 Jun	Norwegian
29 May - 02 Jun	SWISS
19 May - 08 Jun	Norwegian
19 May - 06 Jun	Norwegian
29 May - 04 Jun	Norwegian
20 May - 08 Jun	Norwegian
20 May - 06 Jun	Norwegian
29 May - 07 Jun	Norwegian

Also check the deals for one-way flights from London to Tromso 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 return flights from London to Tromso in May from 220€

Return flights