Cheapest return flights from Dallas-Fort Worth to Porto in September from $603

Best time to book flights for Dallas-Fort Worth (DFW) to Porto (OPO) flights at AirHint

AirHint found the following cheapest return flights from Dallas-Fort Worth (DFW) to Porto (OPO) in September 2025 (see full year).

Return flights

17 Sep - 24 Sep Air Canada
23 Sep - 30 Sep Air Canada
24 Sep - 01 Oct Air Canada
22 Sep - 29 Sep British Airways
27 Sep - 05 Oct Iberia
28 Sep - 05 Oct Iberia
24 Sep - 27 Sep Spirit Airlines
10 Sep - 17 Sep Iberia
16 Sep - 23 Sep Iberia
09 Sep - 16 Sep Air Canada
07 Sep - 14 Sep Turkish Airlines
03 Sep - 10 Sep Iberia
12 Sep - 19 Sep Iberia

Also check the deals for one-way flights from Dallas-Fort Worth to Porto in September.

Skyscanner

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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