Cheapest return flights from London to San Sebastian in December from $481

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

Return flights

16 Dec - 18 Dec Iberia
21 Dec - 28 Dec British Airways direct
22 Dec - 28 Dec Iberia
31 Dec - 04 Jan Iberia
23 Dec - 28 Dec Iberia
30 Dec - 02 Jan Iberia
28 Dec - 04 Jan Iberia direct
22 Dec - 29 Dec Iberia
12 Dec - 15 Dec KLM
10 Dec - 14 Dec KLM
26 Dec - 02 Jan KLM

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

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