Cheapest one-way flights from Washington to Lisbon in October from $253

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

One-Way flights

23 Oct Icelandair
09 Oct Icelandair
30 Oct Icelandair
11 Oct Frontier Airlines
06 Oct Air Canada
10 Oct Porter Airlines (Canada) Ltd
03 Oct Porter Airlines (Canada) Ltd
04 Oct Porter Airlines (Canada) Ltd
02 Oct Icelandair
14 Oct TAP direct

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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