Cheapest return flights from Washington to Lisbon in July from $626

Best time to book flights for Washington (IAD) to Lisbon (LIS) flights at AirHint

AirHint found the following cheapest return flights from Washington (IAD) to Lisbon (LIS) in July 2025 (see full year).

Return flights

07 Jul - 16 Jul Air Canada
22 Jul - 29 Jul Aer Lingus
24 Jul - 29 Jul Icelandair
09 Jul - 16 Jul Aer Lingus
22 Jul - 14 Aug Aer Lingus
04 Jul - 11 Jul Icelandair
24 Jul - 31 Jul Icelandair
17 Jul - 24 Jul Icelandair
21 Jul - 14 Aug Aer Lingus
17 Jul - 22 Jul Icelandair
19 Jul - 14 Aug Aer Lingus
09 Jul - 14 Jul Royal Air Maroc
26 Jul - 04 Aug Icelandair
04 Jul - 13 Jul Icelandair
25 Jul - 01 Aug Aer Lingus
23 Jul - 06 Aug British Airways
30 Jul - 06 Aug Turkish Airlines
31 Jul - 07 Aug Turkish Airlines
23 Jul - 14 Aug British Airways
20 Jul - 14 Aug British Airways

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

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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