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

Return flights

27 Sep - 29 Sep	Ryanair
27 Sep - 30 Sep	Ryanair
04 Sep - 30 Sep	TUI
27 Sep - 27 Sep	Ryanair
27 Sep - 07 Oct	Ryanair
22 Sep - 07 Oct	Ryanair
30 Sep - 07 Oct	Aegean Airlines
17 Sep - 21 Sep	Wizz Air
25 Sep - 07 Oct	Ryanair
30 Sep - 09 Oct	Aegean Airlines
17 Sep - 24 Sep	easyJet
17 Sep - 23 Sep	easyJet	direct
17 Sep - 24 Sep	easyJet	direct
29 Sep - 02 Oct	Ryanair
29 Sep - 30 Sep	Ryanair
20 Sep - 27 Sep	Ryanair
27 Sep - 04 Oct	Ryanair
24 Sep - 07 Oct	Transavia France
27 Sep - 01 Oct	Ryanair
27 Sep - 06 Oct	Ryanair

Also check the deals for one-way flights from Thessaloniki to London 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 London in September from $167

Return flights