AirHint found the following cheapest return flights from San Sebastian (EAS) to London (LCY) in April 2026 (see full year).

Return flights

20 Apr - 27 Apr	Iberia
09 Apr - 12 Apr	Iberia
10 Apr - 13 Apr	Iberia
16 Apr - 19 Apr	Iberia
05 Apr - 13 Apr	British Airways	direct
01 Apr - 07 Apr	Vueling Airlines
10 Apr - 13 Apr	British Airways	direct
05 Apr - 12 Apr	British Airways	direct
24 Apr - 27 Apr	British Airways	direct
23 Apr - 27 Apr	Iberia
30 Apr - 04 May	Vueling Airlines

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

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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Cheapest return flights from San Sebastian to London in April from $233

Return flights