AirHint found the following cheapest one-way flights from Chicago (MDW) to Lisbon (LIS) in March 2026 (see full year).
One-Way flights
| 24 Mar | Frontier Airlines | ||
| 18 Mar | Delta | ||
| 01 Mar | Virgin Atlantic | ||
| 25 Mar | Porter Airlines (Canada) Ltd | ||
| 12 Mar | Frontier Airlines | ||
| 05 Mar | Delta | ||
| 30 Mar | Delta | ||
| 31 Mar | Delta | ||
| 29 Mar | Delta |
Also check the deals for return flights from Chicago to Lisbon in March.
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