Cheapest return flights from Basel to Sofia in September from $154

Best time to book flights for Basel (BSL) to Sofia (SOF) flights at AirHint

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

Return flights

16 Sep - 27 Sep Wizz Air direct
16 Sep - 30 Sep Wizz Air direct
19 Sep - 30 Sep Austrian Airlines
04 Sep - 06 Sep Austrian Airlines
18 Sep - 27 Sep Wizz Air direct
11 Sep - 27 Sep Wizz Air direct
18 Sep - 30 Sep Wizz Air direct
11 Sep - 30 Sep Wizz Air direct
04 Sep - 13 Sep Wizz Air direct
11 Sep - 13 Sep 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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