Cheapest return flights from Washington (IAD) to Lisbon (LIS), August

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
18 Aug 26 Aug Icelandair
26 Aug 10 Sep Icelandair
31 Aug 07 Sep Turkish Airlines
17 Aug 28 Aug Turkish Airlines
17 Aug 23 Aug Icelandair
14 Aug 24 Aug Iberia
27 Aug 30 Aug Turkish Airlines
27 Aug 31 Aug Turkish Airlines
24 Aug 28 Aug Icelandair
17 Aug 21 Aug Icelandair
18 Aug 23 Aug Icelandair
17 Aug 28 Aug TAP
Direct Flight
26 Aug 10 Sep TAP
Direct Flight
25 Aug 01 Sep TAP
Direct Flight
27 Aug 03 Sep TAP
Direct Flight
29 Aug 05 Sep TAP
Direct Flight
31 Aug 07 Sep TAP
Direct Flight
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Updated Jun 14, 2026.

About these fares

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