Cheapest return flights from Detroit to Porto in May from $645

AirHint found the following cheapest return flights from Detroit (DTW) to Porto (OPO) in May 2026 (see full year).

Return flights

11 May - 18 May jetBlue
13 May - 20 May jetBlue
12 May - 19 May Lufthansa
27 May - 20 Jun Air Canada
21 May - 28 May Lufthansa
15 May - 22 May Turkish Airlines
17 May - 24 May Lufthansa
14 May - 21 May Lufthansa
16 May - 23 May Turkish Airlines
22 May - 29 May Delta
20 May - 27 May TAP

Also check the deals for one-way flights from Detroit to Porto in May.

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