AirHint found the following cheapest return flights from Philadelphia (PHL) to Madrid (MAD) in October 2025 (see full year).
Return flights
| 31 Oct - 07 Nov | Iberia | direct | |
| 31 Oct - 06 Nov | Spirit Airlines | ||
| 31 Oct - 08 Nov | Iberia | ||
| 31 Oct - 06 Nov | British Airways | direct |
Also check the deals for one-way flights from Philadelphia to Madrid in October.
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