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

Return flights

04 May - 11 May	Finnair
05 May - 12 May	American Airlines
04 May - 12 May	Finnair
06 May - 13 May	Iberia
03 May - 10 May	Finnair
06 May - 14 May	Finnair
01 May - 08 May	Finnair
02 May - 09 May	British Airways
12 May - 18 May	Finnair
02 May - 08 May	Finnair
26 May - 02 Jun	Finnair
27 May - 03 Jun	Finnair
31 May - 08 Jun	Finnair
25 May - 01 Jun	Finnair
28 May - 08 Jun	Finnair
29 May - 06 Jun	Finnair
30 May - 07 Jun	Finnair
17 May - 02 Jun	Air Canada
19 May - 04 Jun	Air Canada
20 May - 05 Jun	Air Canada

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

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Cheapest return flights from Dallas-Fort Worth to Lisbon in May from 427€

Return flights