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

Return flights

04 Dec - 08 Dec	Ryanair	direct
01 Dec - 04 Dec	Ryanair	direct
06 Dec - 08 Dec	Ryanair	direct
08 Dec - 15 Dec	Ryanair	direct
02 Dec - 06 Dec	Ryanair
16 Dec - 17 Dec	easyJet
17 Dec - 18 Dec	Ryanair
15 Dec - 17 Dec	Ryanair
13 Dec - 15 Dec	Ryanair	direct
01 Dec - 03 Dec	Ryanair
27 Dec - 01 Jan	Ryanair	direct
29 Dec - 01 Jan	Ryanair	direct
31 Dec - 01 Jan	Ryanair
27 Dec - 03 Jan	Ryanair	direct
27 Dec - 04 Jan	Ryanair
17 Dec - 09 Jan	easyJet
29 Dec - 03 Jan	Ryanair	direct
26 Dec - 01 Jan	Ryanair
28 Dec - 03 Jan	Ryanair
31 Dec - 03 Jan	Ryanair

Also check the deals for one-way flights from London to Basel 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 London to Basel in December from $84

Return flights