AirHint found the following cheapest one-way flights from Detroit (DTW) to Lisbon (LIS) in September 2026 (see full year).
One-Way flights
| 15 Sep | WestJet | ||
| 04 Sep | WestJet | ||
| 28 Sep | WestJet | ||
| 21 Sep | United | ||
| 22 Sep | United | ||
| 27 Sep | United | ||
| 29 Sep | United | ||
| 30 Sep | United | ||
| 20 Sep | Air Canada | ||
| 23 Sep | Air Canada |
Also check the deals for return flights from Detroit to Lisbon in September.
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