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Cheapest one-way flights from Washington (IAD) to Lisbon (LIS), October

10 dates in October, from $ 217. Book in one tap, or check whether to buy now or wait.

One-way Return

Dates, airline, and price
Dates	Airline	Price
24 Oct	TAP Direct Flight
30 Oct	Royal Air Maroc
19 Oct	Royal Air Maroc

23 Oct	Frontier Airlines
20 Oct	Aer Lingus
13 Oct	Turkish Airlines
16 Oct	Turkish Airlines
15 Oct	Porter Airlines (Canada) Ltd
23 Oct	TAP Direct Flight
13 Oct	TAP Direct Flight

Cheapest deals for the full year

Deals for return flights from Washington to Lisbon in October.

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Updated Oct 11, 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 (IAD) to Lisbon (LIS), October

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