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

Return flights

10 Apr - 17 Apr	KLM
21 Apr - 28 Apr	Delta
06 Apr - 14 Apr	Delta
22 Apr - 29 Apr	WestJet
17 Apr - 24 Apr	WestJet
30 Apr - 07 May	Delta
15 Apr - 22 Apr	Delta
23 Apr - 30 Apr	Delta
16 Apr - 23 Apr	Delta
20 Apr - 27 Apr	Delta
04 Apr - 11 Apr	Delta
29 Apr - 06 May	Delta
24 Apr - 01 May	Delta

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

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 to Lisbon in April from 744€

Return flights