AirHint found the following cheapest return flights from San Diego (SAN) to Madrid (MAD) in May 2026 (see full year).

Return flights

12 May - 02 Jun	Air Canada
12 May - 29 May	Air Canada
21 May - 04 Jun	British Airways
13 May - 17 May	British Airways
06 May - 13 May	Iberia
14 May - 30 May	Air Canada
01 May - 11 May	Alaska Airlines
18 May - 07 Jun	Lufthansa
26 May - 09 Jun	British Airways
11 May - 18 May	Iberia
26 May - 02 Jun	Iberia
16 May - 23 May	Iberia
25 May - 08 Jun	Lufthansa
21 May - 28 May	Iberia
07 May - 27 May	Iberia

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

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 May from 482€

Return flights