AirHint found the following cheapest return flights from Chicago (ORD) to Amsterdam (AMS) in September 2026 (see full year).
Return flights
| 09 Sep - 16 Sep | Scandinavian Airlines | ||
| 15 Sep - 26 Sep | Scandinavian Airlines | ||
| 09 Sep - 16 Sep | Delta | direct | |
| 15 Sep - 26 Sep | KLM | direct |
Also check the deals for one-way flights from Chicago to Amsterdam in September.
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