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
21 Jul 31 Aug Icelandair
07 Jul 24 Jul Porter Airlines (Canada) Ltd
13 Jul 20 Jul Icelandair
28 Jul 09 Aug Frontier Airlines
04 Jul 25 Jul Frontier Airlines
29 Jul 08 Aug Icelandair
05 Jul 14 Jul Aer Lingus
23 Jul 05 Aug Aer Lingus
17 Jul 29 Jul Icelandair
21 Jul 31 Aug TAP
Direct Flight
31 Jul 07 Aug British Airways
30 Jul 06 Aug Iberia
25 Jul 30 Jul Icelandair
25 Jul 29 Jul Icelandair
08 Jul 30 Jul Frontier Airlines
30 Jul 08 Aug Frontier Airlines
29 Jul 04 Aug TAP
Direct Flight
30 Jul 06 Aug TAP
Direct Flight
16 Jul 19 Jul Frontier Airlines
07 Jul 11 Jul Porter Airlines (Canada) Ltd
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Updated Jun 22, 2026.

About these fares

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