Cheapest return flights from Seattle to Lisbon in April from 468€

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

Return flights

11 Apr - 16 Apr Icelandair
11 Apr - 19 Apr Icelandair
26 Apr - 04 May Lufthansa
24 Apr - 02 May Icelandair
03 Apr - 10 Apr Air Canada
30 Apr - 12 May Delta
26 Apr - 02 May Aer Lingus
15 Apr - 25 Apr Delta
02 Apr - 12 Apr Turkish Airlines
24 Apr - 03 May Lufthansa
10 Apr - 19 Apr Air Canada
10 Apr - 18 Apr Air Canada
04 Apr - 11 Apr Air Canada
03 Apr - 12 Apr Air Canada
25 Apr - 30 May Turkish Airlines

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

Powered by

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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Feel free to contact us with any feedback or request another flight research.