Cheap Flights from Seattle to Lisbon: SEA→LIS from HK$4,463

View HK$4,463 flight on Mon, 18 Aug 2025Opens in a new window

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Find Cheap Flights from Seattle (SEA) to Lisbon (LIS)

Prices were available within the past 7 days and start at HK$4,463 for one-way flights and HK$6,925 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, 18 Aug - Sun, 31 Aug
SEA
Seattle
LIS
Lisbon
HK$6,925 Return, found 2 days ago
HK$6,925
Return
found 2 days ago
Select United flight, departing Mon, 18 Aug from Seattle to Lisbon, returning Sun, 31 Aug, priced at HK$6,925 found 2 days ago
Swiss International Air Lines
Mon, 18 Aug - Sun, 31 Aug
SEA
Seattle
LIS
Lisbon
HK$8,222 Return, found 2 days ago
HK$8,222
Return
found 2 days ago
Select Swiss International Air Lines flight, departing Mon, 18 Aug from Seattle to Lisbon, returning Sun, 31 Aug, priced at HK$8,222 found 2 days ago
American Airlines
Mon, 18 Aug - Sun, 31 Aug
SEA
Seattle
LIS
Lisbon
HK$9,430 Return, found 2 days ago
HK$9,430
Return
found 2 days ago
Select American Airlines flight, departing Mon, 18 Aug from Seattle to Lisbon, returning Sun, 31 Aug, priced at HK$9,430 found 2 days ago
Lufthansa
Mon, 18 Aug - Sun, 31 Aug
SEA
Seattle
LIS
Lisbon
HK$9,552 Return, found 2 days ago
HK$9,552
Return
found 2 days ago
Select Lufthansa flight, departing Mon, 18 Aug from Seattle to Lisbon, returning Sun, 31 Aug, priced at HK$9,552 found 2 days ago
Air Canada
Mon, 18 Aug - Sun, 31 Aug
SEA
Seattle
LIS
Lisbon
HK$10,698 Return, found 2 days ago
HK$10,698
Return
found 2 days ago
Select Air Canada flight, departing Mon, 18 Aug from Seattle to Lisbon, returning Sun, 31 Aug, priced at HK$10,698 found 2 days ago
Finnair
Mon, 18 Aug - Sun, 31 Aug
SEA
Seattle
LIS
Lisbon
HK$12,157 Return, found 2 days ago
HK$12,157
Return
found 2 days ago
Select Finnair flight, departing Mon, 18 Aug from Seattle to Lisbon, returning Sun, 31 Aug, priced at HK$12,157 found 2 days ago

Find the cheapest month to fly from Seattle (SEA) to Lisbon (LIS)

February is typically the cheapest month to fly

From HK$3,643 - HK$8,407 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.