Cheapest one-way flights from Philadelphia to Madrid in September from 252€

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

One-Way flights

08 Sep Frontier Airlines
17 Sep Frontier Airlines
01 Sep Frontier Airlines
02 Sep Spirit Airlines
18 Sep Frontier Airlines
08 Sep British Airways direct
17 Sep Finnair direct
04 Sep British Airways direct
18 Sep Iberia direct
02 Sep Iberia direct

Also check the deals for return 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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