Cheapest return flights from Philadelphia to Madrid in September from $697

Best time to book flights for Philadelphia (PHL) to Madrid (MAD) flights at AirHint

AirHint found the following cheapest return flights from Philadelphia (PHL) to Madrid (MAD) in September 2025 (see full year).

Return flights

25 Sep - 08 Oct jetBlue
17 Sep - 24 Sep United
16 Sep - 01 Oct Iberia
25 Sep - 08 Oct Finnair direct
27 Sep - 04 Oct United
16 Sep - 01 Oct Finnair direct
07 Sep - 14 Sep United

Also check the deals for one-way flights from Philadelphia to Madrid in September.

Skyscanner

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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