AirHint found the following cheapest return flights from London (LON) to Santander (SDR) in April 2026 (see full year).

Return flights

02 Apr - 07 Apr	Iberia
13 Apr - 17 Apr	British Airways
09 Apr - 12 Apr	Iberia
02 Apr - 05 Apr	Iberia
17 Apr - 19 Apr	British Airways
06 Apr - 17 Apr	British Airways
10 Apr - 13 Apr	Iberia
17 Apr - 20 Apr	Iberia
06 Apr - 10 Apr	British Airways
04 Apr - 05 Apr	Iberia

Also check the deals for one-way flights from London to Santander 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 London to Santander in April from 243€

Return flights