Cheapest return flights from Detroit to Porto in May from $613

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

Return flights

05 May - 12 May Delta
06 May - 13 May Delta
07 May - 14 May Turkish Airlines
04 May - 11 May Spirit Airlines
20 May - 27 May WestJet
19 May - 26 May Spirit Airlines
25 May - 01 Jun WestJet
14 May - 21 May Turkish Airlines
08 May - 15 May Lufthansa
18 May - 25 May Spirit Airlines
22 May - 29 May WestJet
27 May - 03 Jun WestJet
31 May - 06 Jun WestJet
26 May - 02 Jun Delta

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

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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