Cheapest return flights from Basel to Helsinki in September from 182€

AirHint found the following cheapest return flights from Basel (BSL) to Helsinki (HEL) in September 2025 (see full year).

Return flights

29 Sep - 06 Oct Norwegian Air Sweden AOC
24 Sep - 29 Sep easyJet
22 Sep - 29 Sep Ryanair
08 Sep - 15 Sep Ryanair
15 Sep - 30 Sep Norwegian Air Sweden AOC
18 Sep - 22 Sep easyJet
14 Sep - 22 Sep Norwegian
15 Sep - 17 Sep Norwegian Air Sweden AOC
15 Sep - 19 Sep Norwegian Air Sweden AOC
13 Sep - 18 Sep Lufthansa
02 Sep - 09 Sep KLM
17 Sep - 04 Oct British Airways
30 Sep - 02 Oct easyJet

Also check the deals for one-way flights from Basel to Helsinki in September.

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.

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