AirHint found the following cheapest one-way flights from Chicago (ORD) to Lisbon (LIS) in October 2026 (see full year).
One-Way flights
| 14 Oct | Lufthansa | ||
| 13 Oct | SWISS | ||
| 17 Oct | SWISS | ||
| 15 Oct | SWISS | ||
| 12 Oct | Air Canada | ||
| 16 Oct | SWISS | ||
| 11 Oct | Lufthansa | ||
| 30 Oct | Delta | ||
| 05 Oct | United | ||
| 04 Oct | Lufthansa |
Also check the deals for return flights from Chicago to Lisbon in October.
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