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

Return flights

14 Oct - 22 Oct	British Airways	direct
13 Oct - 22 Oct	British Airways	direct
07 Oct - 21 Oct	Iberia
14 Oct - 24 Oct	Finnair
12 Oct - 20 Oct	Iberia
08 Oct - 15 Oct	Air Canada
10 Oct - 24 Oct	Air Canada
23 Oct - 30 Oct	Iberia	direct
13 Oct - 20 Oct	Iberia	direct
12 Oct - 20 Oct	American Airlines	direct
31 Oct - 22 Nov	Air Canada
15 Oct - 08 Nov	British Airways
29 Oct - 05 Nov	Iberia
16 Oct - 08 Nov	Air Canada
31 Oct - 22 Nov	British Airways	direct
31 Oct - 04 Nov	American Airlines
27 Oct - 03 Nov	Iberia	direct
31 Oct - 07 Nov	Iberia
12 Oct - 09 Nov	Frontier Airlines
16 Oct - 08 Nov	Finnair	direct

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

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 October from $423

Return flights