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

Return flights

22 Sep - 29 Sep	Ryanair
19 Sep - 22 Sep	TUI
20 Sep - 22 Sep	Ryanair
23 Sep - 25 Sep	easyJet	direct
23 Sep - 30 Sep	easyJet	direct
23 Sep - 27 Sep	easyJet	direct
29 Sep - 03 Oct	Ryanair
25 Sep - 30 Sep	easyJet	direct
25 Sep - 27 Sep	easyJet	direct
27 Sep - 30 Sep	easyJet	direct
27 Sep - 04 Oct	easyJet	direct
20 Sep - 25 Sep	easyJet	direct
30 Sep - 11 Oct	easyJet	direct
30 Sep - 04 Oct	easyJet	direct
30 Sep - 07 Oct	easyJet	direct
30 Sep - 21 Oct	easyJet	direct
30 Sep - 14 Oct	easyJet	direct
30 Sep - 18 Oct	easyJet	direct

Also check the deals for one-way flights from Skiathos 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 Skiathos to London in September from $251

Return flights