Seattle / Tacoma (SEA) to Lisbon (LIS) flight deal in economy from $380

American AirlinesAAAmerican AirlinesFinnairAYFinnairBritish AirwaysBABritish AirwaysIberia AirlinesIBIberia Airlines
One Way•Economy
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
PortugalLIS

Portela Airport

Lisbon, Portugal
$527 USD
-28%$380 USD
Verified 14 days ago
Fair Availability
30% of dates checked are available within 10% of the lowest price

Friday, August 14th, 2026

Outbound Flights

18h 50m·1 stop
$699 USD
British Airways
SEAAug 14 20:20
→
LHRAug 15 13:45
BA 48Boeing 777
6h 35m layover
British Airways
LHRAug 15 20:20
→
LISAug 15 23:10
BA 508Airbus A321neo
13h 40m·1 stop
$700 USD
British Airways
SEAAug 14 20:20
→
LHRAug 15 13:45
BA 48Boeing 777
1h 15m layover
British Airways
LHRAug 15 15:00
→
LISAug 15 18:00
BA 506Airbus A321neo
16h 55m·1 stop
$707 USD
American Airlines
SEAAug 14 08:10
→
PHLAug 14 16:32
AA 986Airbus A321
4h 33m layover
American Airlines
PHLAug 14 21:05
→
LISAug 15 09:05
AA 258Boeing 787
16h 26m·2 stops
$707 USD
Alaska Airlines, Inc.
SEAAug 14 08:39
→
CVGAug 14 16:04
AS 508Boeing 737
2h 28m layover
American Airlines
CVGAug 14 18:32
→
PHLAug 14 20:20
AA 5515Canadair RJ 900
45m layover
American Airlines
PHLAug 14 21:05
→
LISAug 15 09:05
AA 258Boeing 787
26h 53m·2 stops
$713 USD
Alaska Airlines, Inc.
SEAAug 14 22:12
→
CMHAug 15 05:40
AS 280Boeing 737
9h 50m layover
American Airlines
CMHAug 15 15:30
→
PHLAug 15 17:12
AA 3241Airbus A319
3h 53m layover
American Airlines
PHLAug 15 21:05
→
LISAug 16 09:05
AA 258Boeing 787
27h 7m·1 stop
$729 USD
American Airlines
SEAAug 14 21:58
→
PHLAug 15 06:16
AA 2886Airbus A321
14h 49m layover
American Airlines
PHLAug 15 21:05
→
LISAug 16 09:05
AA 258Boeing 787
18h 25m·1 stop
$812 USD
Aer Lingus
SEAAug 14 19:10
→
DUBAug 15 12:15
EI 52Airbus A330
6h 25m layover
Aer Lingus
DUBAug 15 18:40
→
LISAug 15 21:35
EI 486Airbus A320
19h 5m·2 stops
$857 USD
British Airways
SEAAug 14 20:20
→
LHRAug 15 13:45
BA 48Boeing 777
3h 25m layover
Iberia Airlines
LHRAug 15 17:10
→
MADAug 15 20:35
IB 720Airbus A320
2h 25m layover
Iberia Airlines
MADAug 15 23:00
→
LISAug 15 23:25
IB 539Airbus A320
18h 5m·1 stop
$938 USD
British Airways
SEAAug 14 13:30
→
LHRAug 15 06:45
BA 52Boeing 787-10
5h 55m layover
British Airways
LHRAug 15 12:40
→
LISAug 15 15:35
BA 504Airbus A321neo
18h 35m·2 stops
$1,251 USD
British Airways
SEAAug 14 13:30
→
LHRAug 15 06:45
BA 52Boeing 787-10
4h 5m layover
Iberia Airlines
LHRAug 15 10:50
→
MADAug 15 14:15
IB 714Airbus A320
1h 25m layover
Iberia Airlines
MADAug 15 15:40
→
LISAug 15 16:05
IB 1143Canadair RJ 1000
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