AirHint found the following cheapest return flights from Basel (BSL) to London (STN) in December 2025 (see full year).

Return flights

07 Dec - 08 Dec	easyJet
07 Dec - 10 Dec	easyJet
15 Dec - 19 Dec	easyJet
06 Dec - 08 Dec	Ryanair
19 Dec - 22 Dec	easyJet
20 Dec - 24 Dec	easyJet
30 Dec - 02 Jan	easyJet
30 Dec - 01 Jan	easyJet
27 Dec - 04 Jan	easyJet
26 Dec - 30 Dec	easyJet
26 Dec - 01 Jan	easyJet
24 Dec - 27 Dec	easyJet
29 Dec - 04 Jan	easyJet
28 Dec - 03 Jan	easyJet
29 Dec - 03 Jan	easyJet

Also check the deals for one-way flights from Basel to London in December.

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 Basel to London in December from $242

Return flights