Cheapest return flights from Seattle to Lisbon in March from $469

AirHint found the following cheapest return flights from Seattle (SEA) to Lisbon (LIS) in March 2026 (see full year).

Return flights

04 Mar - 12 Mar Icelandair
10 Mar - 17 Mar Air Canada
22 Mar - 31 Mar Lufthansa
19 Mar - 30 Mar Alaska Airlines
19 Mar - 31 Mar Alaska Airlines

Also check the deals for one-way flights from Seattle to Lisbon in March.

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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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