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

Return flights

29 Jul - 14 Aug	Air Canada
28 Jul - 13 Aug	American Airlines
31 Jul - 16 Aug	American Airlines
30 Jul - 15 Aug	Delta
26 Jul - 11 Aug	British Airways
24 Jul - 09 Aug	British Airways
15 Jul - 25 Jul	Frontier Airlines
25 Jul - 10 Aug	British Airways
20 Jul - 05 Aug	Air Canada
22 Jul - 07 Aug	Air Canada
08 Jul - 24 Jul	Air Canada
07 Jul - 23 Jul	Air Canada
09 Jul - 25 Jul	Air Canada
06 Jul - 22 Jul	Air Canada
13 Jul - 29 Jul	Air Canada
12 Jul - 28 Jul	Air Canada
05 Jul - 21 Jul	Air Canada
17 Jul - 02 Aug	Delta
11 Jul - 27 Jul	Air Canada

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

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 Dallas-Fort Worth to Porto in July from $906

Return flights