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

Return flights

25 Sep - 27 Sep	Ryanair
10 Sep - 15 Sep	Ryanair
25 Sep - 29 Sep	Ryanair
11 Sep - 18 Sep	Ryanair
19 Sep - 23 Sep	Ryanair
16 Sep - 30 Sep	Ryanair
09 Sep - 16 Sep	Ryanair
10 Sep - 16 Sep	Ryanair
30 Sep - 05 Oct	Aegean Airlines
11 Sep - 15 Sep	Wizz Air
28 Sep - 05 Oct	Ryanair
19 Sep - 25 Sep	Ryanair
27 Sep - 01 Oct	Ryanair
27 Sep - 04 Oct	Ryanair
26 Sep - 04 Oct	Ryanair
30 Sep - 05 Oct	easyJet	direct
28 Sep - 05 Oct	easyJet	direct
27 Sep - 01 Oct	easyJet	direct
26 Sep - 04 Oct	British Airways	direct
27 Sep - 04 Oct	easyJet	direct

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 116€

Return flights