AirHint found the following cheapest return flights from San Diego (SAN) to Madrid (MAD) in October 2025 (see full year).

Return flights

06 Oct - 17 Oct	Air Canada
05 Oct - 14 Oct	Air Canada
05 Oct - 24 Oct	Air Canada
28 Oct - 11 Nov	Hawaiian Airlines
08 Oct - 15 Oct	United
21 Oct - 27 Oct	Air Canada
08 Oct - 23 Oct	Air France
15 Oct - 30 Oct	United
22 Oct - 27 Oct	Air Canada
05 Oct - 18 Oct	Air Canada
13 Oct - 20 Oct	United
28 Oct - 04 Nov	United

Also check the deals for one-way flights from San Diego to Madrid in October.

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 Diego to Madrid in October from $572

Return flights