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

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
18 Jul 09 Aug Porter Airlines (Canada) Ltd
25 Jul 12 Aug Porter Airlines (Canada) Ltd
14 Jul 20 Jul Air Canada
19 Jul 27 Jul Porter Airlines (Canada) Ltd
23 Jul 30 Jul Air Canada
18 Jul 05 Aug Porter Airlines (Canada) Ltd
22 Jul 27 Jul Porter Airlines (Canada) Ltd
21 Jul 27 Jul Frontier Airlines
18 Jul 04 Aug Porter Airlines (Canada) Ltd
18 Jul 06 Aug Porter Airlines (Canada) Ltd
25 Jul 30 Jul Porter Airlines (Canada) Ltd
18 Jul 08 Aug Porter Airlines (Canada) Ltd
22 Jul 06 Aug Frontier Airlines
28 Jul 03 Aug Porter Airlines (Canada) Ltd
24 Jul 31 Jul Porter Airlines (Canada) Ltd
20 Jul 09 Aug Porter Airlines (Canada) Ltd
18 Jul 07 Aug Porter Airlines (Canada) Ltd
17 Jul 26 Jul Porter Airlines (Canada) Ltd
14 Jul 21 Jul Porter Airlines (Canada) Ltd
13 Jul 24 Jul Icelandair
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Updated Jul 13, 2026.

About these fares

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