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

Return flights

08 Oct - 15 Oct	Iberia	direct
07 Oct - 14 Oct	United
01 Oct - 08 Oct	Iberia
14 Oct - 21 Oct	United
22 Oct - 29 Oct	Iberia
01 Oct - 30 Oct	Lufthansa
02 Oct - 09 Oct	Iberia	direct
06 Oct - 13 Oct	Iberia	direct
10 Oct - 17 Oct	Iberia	direct
16 Oct - 23 Oct	Iberia	direct
31 Oct - 07 Nov	Iberia	direct
14 Oct - 08 Nov	British Airways	direct
18 Oct - 08 Nov	Air Canada
12 Oct - 09 Nov	Air Canada
28 Oct - 04 Nov	Iberia	direct
29 Oct - 05 Nov	Iberia	direct
18 Oct - 08 Nov	British Airways	direct
26 Oct - 02 Nov	Iberia	direct
25 Oct - 01 Nov	Iberia	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 445€

Return flights