AirHint found the following cheapest return flights from Detroit (DTW) to Porto (OPO) in November 2025 (see full year).

Return flights

15 Nov - 22 Nov	Lufthansa
16 Nov - 23 Nov	Lufthansa
14 Nov - 21 Nov	Lufthansa
25 Nov - 02 Dec	Lufthansa
29 Nov - 06 Dec	Lufthansa
13 Nov - 20 Nov	United
18 Nov - 25 Nov	United
12 Nov - 19 Nov	Delta
17 Nov - 24 Nov	Air France
28 Nov - 05 Dec	Air France
30 Nov - 07 Dec	Air France
19 Nov - 26 Nov	KLM
27 Nov - 04 Dec	KLM
24 Nov - 01 Dec	Air France
11 Nov - 18 Nov	United
05 Nov - 12 Nov	Delta
10 Nov - 06 Dec	Lufthansa

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

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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Cheapest return flights from Detroit to Porto in November from $496

Return flights