Cheapest return flights from Seattle to Lisbon in March from 442€

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

Return flights

09 Mar - 16 Mar Air Canada
05 Mar - 12 Mar Air Canada
06 Mar - 13 Mar Lufthansa
10 Mar - 17 Mar Alaska Airlines
11 Mar - 18 Mar Alaska Airlines
12 Mar - 19 Mar Alaska Airlines
07 Mar - 14 Mar Alaska Airlines
08 Mar - 15 Mar Air Canada
14 Mar - 21 Mar British Airways
13 Mar - 20 Mar British Airways

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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