Cheapest return flights from Washington to Lisbon in August 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 August 2025 (see full year).

Return flights

20 Aug - 27 Aug Scandinavian Airlines
17 Aug - 24 Aug Scandinavian Airlines
18 Aug - 25 Aug Scandinavian Airlines
27 Aug - 03 Sep Scandinavian Airlines
31 Aug - 08 Sep Scandinavian Airlines
15 Aug - 22 Aug Scandinavian Airlines
19 Aug - 26 Aug Scandinavian Airlines
29 Aug - 06 Sep Royal Air Maroc
28 Aug - 04 Sep Royal Air Maroc
16 Aug - 23 Aug Scandinavian Airlines
26 Aug - 02 Sep Royal Air Maroc
28 Aug - 05 Sep Royal Air Maroc
28 Aug - 03 Sep Royal Air Maroc
21 Aug - 28 Aug Finnair
22 Aug - 29 Aug Scandinavian Airlines
28 Aug - 08 Sep Scandinavian Airlines
03 Aug - 10 Aug TAP direct
28 Aug - 07 Sep Scandinavian Airlines
02 Aug - 09 Aug TAP direct
26 Aug - 02 Sep TAP direct

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

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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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