AirHint found the following cheapest return flights from Dallas-Fort Worth (DFW) to Porto (OPO) in May 2026 (see full year).

Return flights

02 May - 18 May	American Airlines
03 May - 19 May	American Airlines
05 May - 21 May	American Airlines
06 May - 22 May	American Airlines
01 May - 17 May	American Airlines
07 May - 23 May	Iberia
11 May - 27 May	Turkish Airlines
10 May - 26 May	Turkish Airlines
09 May - 25 May	Turkish Airlines

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

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.

Book a cheap hotel in Porto

Cheap car rent in Porto

Cheapest return flights from Dallas-Fort Worth to Porto in May from $655

Return flights