Cheapest return flights from Washington to Lisbon in August from 543€

AirHint found the following cheapest return flights from Washington (IAD) to Lisbon (LIS) in August 2026 (see full year).

Return flights

12 Aug - 08 Sep Turkish Airlines
11 Aug - 10 Sep Turkish Airlines
21 Aug - 05 Sep Turkish Airlines
22 Aug - 05 Sep Turkish Airlines
05 Aug - 26 Aug Turkish Airlines
22 Aug - 05 Sep TAP direct
12 Aug - 08 Sep TAP direct
21 Aug - 05 Sep TAP direct
21 Aug - 06 Sep TAP direct
05 Aug - 26 Aug TAP direct
11 Aug - 10 Sep TAP direct
07 Aug - 22 Aug Royal Air Maroc
17 Aug - 24 Aug TAP direct
02 Aug - 07 Aug Aer Lingus
03 Aug - 08 Aug Porter Airlines (Canada) Ltd
07 Aug - 14 Aug TAP direct
02 Aug - 09 Aug TAP direct
07 Aug - 22 Aug TAP direct

Also check the deals for one-way flights from Washington to Lisbon in August.

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