Cheapest return flights from Dallas-Fort Worth to Lisbon in May from 646€

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

Return flights

05 May - 14 May KLM
11 May - 22 May Delta
03 May - 23 May Delta
13 May - 17 May Delta
24 May - 01 Jun Spirit Airlines
28 May - 12 Jun Frontier Airlines
16 May - 26 May Frontier Airlines
15 May - 25 May Frontier Airlines
29 May - 13 Jun Frontier Airlines
10 May - 06 Jun Frontier Airlines
21 May - 30 May Frontier Airlines

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

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