AirHint found the following cheapest return flights from London (LTN) to Tromso (TOS) in August 2025 (see full year).

Return flights

26 Aug - 02 Sep	Wizz Air
30 Aug - 07 Sep	Wizz Air
27 Aug - 03 Sep	Wizz Air
24 Aug - 11 Sep	Wizz Air
30 Aug - 04 Sep	Wizz Air
27 Aug - 30 Aug	Wizz Air
25 Aug - 01 Sep	Wizz Air
19 Aug - 22 Aug	Wizz Air
29 Aug - 31 Aug	Wizz Air
28 Aug - 31 Aug	Ryanair
27 Aug - 31 Aug	Wizz Air
23 Aug - 30 Aug	Wizz Air
22 Aug - 29 Aug	Wizz Air UK
21 Aug - 28 Aug	Wizz Air
23 Aug - 28 Aug	Wizz Air
23 Aug - 25 Aug	Wizz Air
26 Aug - 10 Sep	easyJet

Also check the deals for one-way flights from London to Tromso in August.

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 August from 213€

Return flights