Cheapest one-way flights from Washington to Lisbon in October from 207€

AirHint found the following cheapest one-way flights from Washington (IAD) to Lisbon (LIS) in October 2025 (see full year).

One-Way flights

12 Oct Frontier Airlines
05 Oct Frontier Airlines
04 Oct Frontier Airlines
27 Oct Frontier Airlines
26 Oct Allegiant Air
06 Oct Frontier Airlines
25 Oct Frontier Airlines
13 Oct Frontier Airlines
18 Oct Frontier Airlines
23 Oct Frontier Airlines

Also check the deals for return flights from Washington to Lisbon in October.

Skyscanner

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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