Cheapest one-way flights from Washington to Lisbon in January from $253

AirHint found the following cheapest one-way flights from Washington (IAD) to Lisbon (LIS) in January 2026 (see full year).

One-Way flights

17 Jan Frontier Airlines
19 Jan Frontier Airlines
16 Jan Frontier Airlines
09 Jan Frontier Airlines
07 Jan Royal Air Maroc
19 Jan TAP direct
22 Jan TAP direct
09 Jan TAP direct
17 Jan TAP direct
16 Jan TAP direct

Also check the deals for return flights from Washington to Lisbon in January.

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