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

One-Way flights

16 Dec	Vueling Airlines
15 Dec	Vueling Airlines
02 Dec	Vueling Airlines
21 Dec	Vueling Airlines
25 Dec	Vueling Airlines
08 Dec	Vueling Airlines
14 Dec	Vueling Airlines
04 Dec	Vueling Airlines
05 Dec	Vueling Airlines
29 Dec	Iberia

Also check the deals for return 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 one-way flights from San Sebastian to London in December from $56

One-Way flights