AirHint found the following cheapest return flights from Santander (SDR) to London (STN) in July 2025 (see full year).

Return flights

30 Jul - 19 Aug	Ryanair	direct
30 Jul - 17 Aug	Ryanair	direct
30 Jul - 20 Aug	Ryanair	direct
30 Jul - 06 Aug	Ryanair
29 Jul - 19 Aug	Ryanair	direct
29 Jul - 17 Aug	Ryanair	direct
30 Jul - 12 Aug	Ryanair	direct
30 Jul - 05 Aug	Ryanair
30 Jul - 16 Aug	Ryanair	direct
30 Jul - 15 Aug	Ryanair	direct
30 Jul - 31 Jul	Ryanair
28 Jul - 30 Jul	Ryanair
29 Jul - 31 Jul	Ryanair
28 Jul - 31 Jul	Ryanair
29 Jul - 30 Jul	Ryanair	direct

Also check the deals for one-way flights from Santander to London in July.

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 Santander to London in July from 70€

Return flights