AirHint found the following cheapest return flights from Thessaloniki (SKG) to Barcelona (BCN) in September 2025 (see full year).

Return flights

16 Sep - 23 Sep	Aegean Airlines
19 Sep - 24 Sep	Wizz Air
30 Sep - 04 Oct	Ryanair
27 Sep - 02 Oct	Ryanair
19 Sep - 22 Sep	Wizz Air
30 Sep - 05 Oct	Ryanair
27 Sep - 30 Sep	Ryanair
20 Sep - 22 Sep	Ryanair
29 Sep - 02 Oct	Ryanair
25 Sep - 30 Sep	Ryanair
18 Sep - 25 Sep	Ryanair
28 Sep - 02 Oct	Ryanair
30 Sep - 03 Oct	Ryanair
26 Sep - 29 Sep	Wizz Air
18 Sep - 22 Sep	Aegean Airlines
18 Sep - 27 Sep	Ryanair
29 Sep - 04 Oct	Ryanair
29 Sep - 03 Oct	Ryanair
22 Sep - 06 Oct	Volotea	direct
22 Sep - 09 Oct	Volotea	direct

Also check the deals for one-way flights from Thessaloniki to Barcelona in September.

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 Thessaloniki to Barcelona in September from 122€

Return flights