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

Return flights

20 Sep - 06 Oct	Delta
21 Sep - 07 Oct	Delta
22 Sep - 08 Oct	Delta
28 Sep - 14 Oct	Delta
26 Sep - 12 Oct	Delta
02 Sep - 23 Sep	Iberia
27 Sep - 13 Oct	Delta
14 Sep - 30 Sep	Delta
16 Sep - 02 Oct	Delta
24 Sep - 10 Oct	Delta
02 Sep - 18 Sep	Delta
01 Sep - 17 Sep	Delta
06 Sep - 22 Sep	Delta
15 Sep - 01 Oct	Delta
11 Sep - 18 Sep	British Airways
13 Sep - 20 Sep	Iberia
29 Sep - 15 Oct	Air Canada
12 Sep - 19 Sep	British Airways
12 Sep - 28 Sep	Delta
09 Sep - 25 Sep	Delta

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

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 September from 477€

Return flights