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

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
28 Sep 05 Oct Royal Air Maroc
25 Sep 18 Oct Royal Air Maroc
08 Sep 15 Sep Porter Airlines (Canada) Ltd
09 Sep 19 Sep Icelandair
23 Sep 30 Sep Turkish Airlines
29 Sep 06 Oct Turkish Airlines
12 Sep 23 Sep Icelandair
08 Sep 23 Sep Icelandair
01 Sep 14 Sep Icelandair
30 Sep 27 Oct Turkish Airlines
18 Sep 28 Sep Icelandair
01 Sep 10 Sep Icelandair
20 Sep 27 Sep Royal Air Maroc
12 Sep 30 Sep Icelandair
30 Sep 04 Oct Iberia
26 Sep 18 Oct Iberia
29 Sep 06 Oct TAP
Direct Flight
30 Sep 27 Oct TAP
Direct Flight
28 Sep 05 Oct TAP
Direct Flight
25 Sep 18 Oct TAP
Direct Flight
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Updated Jun 14, 2026.

About these fares

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