AirHint found the following cheapest return flights from San Sebastian (EAS) to London (LGW) in December 2025 (see full year).

Return flights

04 Dec - 05 Dec	Vueling Airlines
06 Dec - 10 Dec	Vueling Airlines
09 Dec - 12 Dec	Vueling Airlines
07 Dec - 12 Dec	Vueling Airlines
04 Dec - 12 Dec	Vueling Airlines
08 Dec - 12 Dec	Vueling Airlines
05 Dec - 09 Dec	Vueling Airlines
09 Dec - 30 Dec	Vueling Airlines
05 Dec - 08 Dec	Vueling Airlines
16 Dec - 30 Dec	Vueling Airlines

Also check the deals for one-way flights from San Sebastian 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.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from San Sebastian to London in December from $162

Return flights