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

Return flights

04 Mar - 10 Mar	British Airways
11 Mar - 18 Mar	British Airways
13 Mar - 31 Mar	Air Canada
12 Mar - 18 Mar	British Airways
12 Mar - 19 Mar	British Airways
04 Mar - 09 Mar	British Airways
24 Mar - 31 Mar	Iberia
04 Mar - 08 Mar	American Airlines	direct
04 Mar - 09 Mar	Finnair	direct
02 Mar - 09 Mar	Iberia	direct
31 Mar - 13 Apr	jetBlue
24 Mar - 04 Apr	Air Canada
31 Mar - 13 Apr	Iberia	direct
29 Mar - 05 Apr	Iberia
24 Mar - 04 Apr	Iberia	direct

Also check the deals for one-way flights from Philadelphia 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 Philadelphia to Madrid in March from $506

Return flights