AirHint found the following cheapest one-way flights from London (LCY) to San Sebastian (EAS) in December 2025 (see full year).
One-Way flights
| 29 Dec | Iberia | ||
| 15 Dec | Iberia | ||
| 22 Dec | Iberia | ||
| 16 Dec | Iberia | ||
| 21 Dec | Iberia | ||
| 23 Dec | Iberia | ||
| 11 Dec | KLM | ||
| 12 Dec | KLM | ||
| 14 Dec | Aer Lingus | ||
| 18 Dec | KLM |
Also check the deals for return flights from London to San Sebastian in December.
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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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