AirHint found the following cheapest one-way flights from Chicago (ORD) to Lisbon (LIS) in August 2026 (see full year).
One-Way flights
| 31 Aug | Spirit Airlines | ||
| 16 Aug | Iberia | ||
| 30 Aug | Spirit Airlines | ||
| 01 Aug | Iberia | ||
| 29 Aug | Spirit Airlines | ||
| 19 Aug | TAP | direct | |
| 16 Aug | TAP | direct | |
| 01 Aug | TAP | direct | |
| 30 Aug | TAP | direct |
Also check the deals for return flights from Chicago to Lisbon in August.
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