Cheapest one-way flights from Washington to Lisbon in October from $359

AirHint found the following cheapest one-way flights from Washington (IAD) to Lisbon (LIS) in October 2026 (see full year).

One-Way flights

04 Oct Royal Air Maroc
05 Oct Royal Air Maroc
07 Oct Royal Air Maroc
11 Oct Royal Air Maroc
12 Oct Royal Air Maroc
09 Oct Royal Air Maroc
13 Oct SWISS
01 Oct Turkish Airlines
06 Oct Turkish Airlines
08 Oct Turkish Airlines

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

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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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