Cheapest return flights from Detroit to Lisbon in September from $522

AirHint found the following cheapest return flights from Detroit (DTW) to Lisbon (LIS) in September 2026 (see full year).

Return flights

15 Sep - 29 Sep WestJet
22 Sep - 29 Sep Turkish Airlines
21 Sep - 28 Sep Turkish Airlines
07 Sep - 13 Sep Turkish Airlines
02 Sep - 09 Sep Turkish Airlines
04 Sep - 11 Sep Turkish Airlines
03 Sep - 10 Sep Turkish Airlines
05 Sep - 12 Sep Turkish Airlines
23 Sep - 30 Sep KLM
02 Sep - 08 Sep Delta

Also check the deals for one-way flights from Detroit to Lisbon in September.

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