AirHint found the following cheapest one-way flights from Chicago (MDW) to Lisbon (LIS) in August 2026 (see full year).
One-Way flights
| 03 Aug | Virgin Atlantic | ||
| 04 Aug | Virgin Atlantic | ||
| 05 Aug | Virgin Atlantic | ||
| 02 Aug | Delta | ||
| 08 Aug | Delta | ||
| 06 Aug | Delta | ||
| 01 Aug | Virgin Atlantic | ||
| 07 Aug | Delta |
Also check the deals for return flights from Chicago to Lisbon in August.
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