Cheapest return flights from Basel to Sofia in September from 69€

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

Return flights

18 Sep - 09 Oct Wizz Air direct
18 Sep - 20 Sep Wizz Air direct
11 Sep - 20 Sep Wizz Air direct
04 Sep - 20 Sep Wizz Air direct
11 Sep - 18 Sep Wizz Air direct
18 Sep - 04 Oct Wizz Air direct
11 Sep - 16 Sep Wizz Air direct
02 Sep - 20 Sep Wizz Air direct
04 Sep - 18 Sep Wizz Air direct
25 Sep - 09 Oct Wizz Air direct
02 Sep - 10 Sep Wizz Air
04 Sep - 16 Sep Wizz Air direct
02 Sep - 18 Sep Wizz Air direct
25 Sep - 04 Oct Wizz Air direct
23 Sep - 09 Oct Wizz Air direct
20 Sep - 09 Oct Wizz Air direct
30 Sep - 09 Oct Wizz Air direct
13 Sep - 04 Oct Wizz Air direct
23 Sep - 04 Oct Wizz Air direct
20 Sep - 04 Oct Wizz Air direct

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

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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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