Cheapest return flights from London to San Sebastian in December from $265

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

Return flights

04 Dec - 09 Dec Iberia
17 Dec - 06 Jan Iberia
06 Dec - 09 Dec KLM
21 Dec - 04 Jan British Airways direct
14 Dec - 04 Jan Iberia
15 Dec - 04 Jan Iberia
17 Dec - 09 Jan KLM
05 Dec - 09 Dec KLM
28 Dec - 29 Dec Iberia
05 Dec - 04 Jan KLM

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

Skyscanner

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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