AirHint found the following cheapest one-way flights from Dallas (DAL) to Lisbon (LIS) in May 2026 (see full year).
One-Way flights
| 18 May | Air France | ||
| 05 May | Delta | ||
| 20 May | Delta | ||
| 26 May | Condor |
Also check the deals for return flights from Dallas to Lisbon in May.
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