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

Return flights

08 Mar - 19 Mar	United
10 Mar - 17 Mar	United
19 Mar - 24 Mar	United
07 Mar - 14 Mar	Alaska Airlines
13 Mar - 23 Mar	Lufthansa
21 Mar - 29 Mar	British Airways
21 Mar - 04 Apr	Air Canada
27 Mar - 02 Apr	British Airways
30 Mar - 10 Apr	United
27 Mar - 05 Apr	Air Canada
30 Mar - 06 Apr	United
20 Mar - 27 Mar	Iberia
28 Mar - 04 Apr	United

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

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 March from $577

Return flights