AirHint found the following cheapest one-way flights from Chicago (ORD) to Amsterdam (AMS) in September 2026 (see full year).
One-Way flights
| 21 Sep | Spirit Airlines | ||
| 10 Sep | Porter Airlines (Canada) Ltd | ||
| 21 Sep | Delta | direct | |
| 27 Sep | Delta | direct | |
| 10 Sep | Delta | direct | |
| 12 Sep | Delta | direct |
Also check the deals for return flights from Chicago to Amsterdam in September.
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