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

Return flights

03 May - 19 May	Air Canada
04 May - 20 May	Air Canada
05 May - 21 May	Air Canada
06 May - 22 May	Air Canada
01 May - 17 May	Air Canada
02 May - 18 May	Air Canada
07 May - 23 May	Air Canada
08 May - 24 May	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 496€

Return flights