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Cheapest one-way flights from Washington (IAD) to Lisbon (LIS), August

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Dates, airline, and price
Dates	Airline	Price
30 Aug	Icelandair
31 Aug	Icelandair
28 Aug	Icelandair
10 Aug	Breeze Airways
19 Aug	Frontier Airlines
29 Aug	Icelandair
15 Aug	Frontier Airlines
05 Aug	Frontier Airlines
14 Aug	Breeze Airways
13 Aug	Frontier Airlines

deals for return flights from Washington to Lisbon in August.

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Updated Jul 14, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest one-way flights from Washington (IAD) to Lisbon (LIS), August

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