Cheapest return flights from Seattle to Lisbon in March from $519

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

Return flights

02 Mar - 09 Mar United
03 Mar - 10 Mar United
16 Mar - 23 Mar United
23 Mar - 30 Mar United
24 Mar - 31 Mar United
04 Mar - 11 Mar United
13 Mar - 21 Mar Lufthansa
15 Mar - 21 Mar Lufthansa
01 Mar - 08 Mar Lufthansa
15 Mar - 22 Mar British Airways
25 Mar - 01 Apr United
26 Mar - 02 Apr Turkish Airlines
30 Mar - 06 Apr Turkish Airlines
27 Mar - 03 Apr Turkish Airlines
29 Mar - 05 Apr Turkish Airlines
28 Mar - 04 Apr Icelandair

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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