Cheapest return flights from Washington to Lisbon in May from 545€

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 May 2025 (see full year).

Return flights

12 May - 19 May Scandinavian Airlines
06 May - 13 May Scandinavian Airlines
12 May - 20 May Scandinavian Airlines
26 May - 02 Jun Porter Airlines (Canada) Ltd
27 May - 03 Jun Air Transat
28 May - 04 Jun Porter Airlines (Canada) Ltd
13 May - 21 May Air Canada
08 May - 12 May Delta
03 May - 10 May Air France
07 May - 14 May Turkish Airlines
13 May - 20 May Air Canada
11 May - 19 May Lufthansa
15 May - 23 May Air France
27 May - 12 Jun Icelandair
25 May - 01 Jun Air Transat
29 May - 05 Jun Air Transat
30 May - 06 Jun Porter Airlines (Canada) Ltd
19 May - 12 Jun Icelandair
21 May - 04 Jun Porter Airlines (Canada) Ltd
16 May - 01 Jun Royal Air Maroc

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

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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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