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

Return flights

14 Jan - 21 Jan	KLM
20 Jan - 27 Jan	KLM
21 Jan - 28 Jan	KLM
15 Jan - 22 Jan	KLM
22 Jan - 29 Jan	KLM
23 Jan - 30 Jan	KLM
26 Jan - 02 Feb	Air France
19 Jan - 26 Jan	Air France
25 Jan - 01 Feb	Air France
16 Jan - 23 Jan	Delta
17 Jan - 24 Jan	KLM
24 Jan - 31 Jan	KLM

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

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 January from 448€

Return flights