Cheapest return flights from Philadelphia to Madrid in September from 440€

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

Return flights

17 Sep - 24 Sep jetBlue
23 Sep - 30 Sep United
29 Sep - 06 Oct Iberia
26 Sep - 03 Oct Iberia
19 Sep - 24 Sep United
01 Sep - 09 Sep Air Canada
08 Sep - 23 Sep British Airways direct
02 Sep - 09 Sep Iberia
20 Sep - 27 Sep United
18 Sep - 04 Oct United
08 Sep - 15 Sep Iberia direct
14 Sep - 21 Sep Iberia direct
10 Sep - 21 Sep Air Canada
28 Sep - 04 Oct Finnair

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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