Cheapest return flights from Seattle to Lisbon in March from 449€

Best time to book flights for Seattle (SEA) to Lisbon (LIS) flights at AirHint

AirHint found the following cheapest return flights from Seattle (SEA) to Lisbon (LIS) in March 2025 (see full year).

Return flights

31 Mar - 07 Apr Air Canada
24 Mar - 08 Apr British Airways
12 Mar - 18 Mar United
12 Mar - 20 Mar United
12 Mar - 19 Mar United
12 Mar - 17 Mar KLM
13 Mar - 20 Mar Delta
12 Mar - 16 Mar KLM
24 Mar - 27 Mar Hawaiian Airlines
16 Mar - 22 Mar Turkish Airlines

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

Skyscanner

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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