AirHint found the following cheapest one-way flights from Newark (EWR) to Madrid (MAD) in September 2026 (see full year).
One-Way flights
| 29 Sep | TAP | ||
| 14 Sep | Aer Lingus | ||
| 16 Sep | FrenchBee | ||
| 15 Sep | SWISS | ||
| 01 Sep | Aer Lingus | ||
| 09 Sep | Lufthansa | ||
| 29 Sep | Finnair | direct | |
| 24 Sep | TAP | ||
| 08 Sep | SWISS | ||
| 17 Sep | TAP |
Also check the deals for return flights from Newark to Madrid in September.
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