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Cheapest one-way flights from Washington (DCA) to Lisbon (LIS), September

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Dates, airline, and price
Dates	Airline	Price
19 Sep	jetBlue
01 Sep	jetBlue
25 Sep	jetBlue
02 Sep	jetBlue
21 Sep	United
22 Sep	United
28 Sep	United
30 Sep	Air Canada
26 Sep	WestJet
13 Sep	WestJet

deals for return flights from Washington to Lisbon in September.

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Updated Jul 19, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest one-way flights from Washington (DCA) to Lisbon (LIS), September

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