Cheapest return flights from Washington to Lisbon in October from $467

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

Return flights

13 Oct - 20 Oct Air Canada
08 Oct - 20 Oct Lufthansa
02 Oct - 16 Oct Air Canada
01 Oct - 07 Oct Air Canada
09 Oct - 14 Oct Icelandair
10 Oct - 16 Oct Lufthansa
09 Oct - 13 Oct Air Canada
03 Oct - 09 Oct Lufthansa
03 Oct - 13 Oct Lufthansa
24 Oct - 07 Nov Scandinavian Airlines
09 Oct - 20 Oct Air Canada
22 Oct - 02 Nov Turkish Airlines
29 Oct - 05 Nov TAP direct
06 Oct - 09 Nov American Airlines

Also check the deals for one-way 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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