Cheapest return flights from Dallas to Lisbon in May from $1078

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

Return flights

16 May - 23 May Delta
23 May - 30 May Delta
04 May - 13 May Delta
12 May - 19 May Delta
11 May - 20 May Delta
24 May - 31 May Delta
15 May - 22 May Delta
11 May - 18 May Delta
08 May - 15 May Delta
13 May - 20 May Delta
04 May - 04 Jun KLM
22 May - 13 Jun WestJet

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

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