AirHint found the following cheapest return flights from London (LON) to Thessaloniki (SKG) in September 2026 (see full year).

Return flights

11 Sep - 15 Sep	Ryanair
05 Sep - 12 Sep	FlyOne (Romania)
28 Sep - 03 Oct	Wizz Air Malta
29 Sep - 08 Oct	Wizz Air Malta
12 Sep - 17 Sep	FlyOne (Romania)
30 Sep - 09 Oct	FlyOne (Romania)
27 Sep - 03 Oct	Wizz Air Malta
30 Sep - 08 Oct	FlyOne (Romania)
12 Sep - 18 Sep	FlyOne (Romania)
23 Sep - 30 Sep	Wizz Air
09 Sep - 16 Sep	Wizz Air Malta
22 Sep - 02 Oct	FlyOne (Romania)
30 Sep - 13 Oct	easyJet	direct
24 Sep - 01 Oct	Ryanair
30 Sep - 15 Oct	easyJet	direct
30 Sep - 07 Oct	Wizz Air Malta
12 Sep - 19 Sep	Ryanair
11 Sep - 16 Sep	FlyOne (Romania)
19 Sep - 21 Sep	FlyOne (Romania)
10 Sep - 15 Sep	FlyOne (Romania)

Also check the deals for one-way flights from London to Thessaloniki 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 London to Thessaloniki in September from 122€

Return flights