Cheapest return flights from Philadelphia to Madrid in September from $525

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

Return flights

23 Sep - 02 Oct British Airways
30 Sep - 07 Oct Iberia
24 Sep - 01 Oct Iberia
10 Sep - 17 Sep jetBlue
29 Sep - 13 Oct Iberia
29 Sep - 13 Oct American Airlines direct
19 Sep - 24 Sep American Airlines
21 Sep - 28 Sep United
18 Sep - 25 Sep United
06 Sep - 17 Sep jetBlue
06 Sep - 18 Sep jetBlue
06 Sep - 19 Sep jetBlue
06 Sep - 20 Sep Spirit Airlines
09 Sep - 16 Sep Iberia direct
03 Sep - 10 Sep Iberia direct
27 Sep - 04 Oct Iberia

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.

Book a cheap hotel in Madrid

Cheap car rent in Madrid

Feel free to contact us with any feedback or request another flight research.