AirHint found the following cheapest return flights from Chicago (MDW) to Lisbon (LIS) in January 2026 (see full year).
Return flights
| 25 Jan - 01 Feb | Delta | ||
| 21 Jan - 02 Feb | Virgin Atlantic | ||
| 22 Jan - 25 Jan | Delta | ||
| 22 Jan - 02 Feb | Delta | ||
| 23 Jan - 01 Feb | Delta | ||
| 30 Jan - 01 Feb | Frontier Airlines | ||
| 25 Jan - 28 Jan | Delta | ||
| 24 Jan - 28 Jan | Delta |
Also check the deals for one-way flights from Chicago to Lisbon in January.
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