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

Return flights

06 Dec - 07 Dec	Ryanair
11 Dec - 14 Dec	Ryanair
12 Dec - 14 Dec	Ryanair
05 Dec - 07 Dec	Ryanair
02 Dec - 04 Dec	Ryanair
15 Dec - 19 Dec	Ryanair
14 Dec - 19 Dec	Ryanair
01 Dec - 03 Dec	easyJet
13 Dec - 14 Dec	Ryanair
04 Dec - 08 Dec	Ryanair
26 Dec - 02 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 159€

Return flights