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 15 days ago
Fair Availability
30% of dates checked are available within 10% of the lowest price

Friday, August 21st, 2026

Outbound Flights

18h 50m·1 stop
$699 USD
British Airways
SEAAug 21 20:20
→
LHRAug 22 13:45
BA 48Boeing 777
6h 35m layover
British Airways
LHRAug 22 20:20
→
LISAug 22 23:10
BA 508Airbus A321neo
13h 40m·1 stop
$700 USD
British Airways
SEAAug 21 20:20
→
LHRAug 22 13:45
BA 48Boeing 777
1h 15m layover
British Airways
LHRAug 22 15:00
→
LISAug 22 18:00
BA 506Airbus A321neo
18h 5m·1 stop
$700 USD
British Airways
SEAAug 21 13:30
→
LHRAug 22 06:45
BA 52Boeing 787-10
5h 55m layover
British Airways
LHRAug 22 12:40
→
LISAug 22 15:35
BA 504Airbus A321neo
16h 55m·1 stop
$707 USD
American Airlines
SEAAug 21 08:10
→
PHLAug 21 16:32
AA 986Airbus A321
4h 33m layover
American Airlines
PHLAug 21 21:05
→
LISAug 22 09:05
AA 258Boeing 787
15h·2 stops
$707 USD
Alaska Airlines, Inc.
SEAAug 21 10:05
→
CVGAug 21 17:39
AS 451Boeing 737
53m layover
American Airlines
CVGAug 21 18:32
→
PHLAug 21 20:20
AA 5515Canadair RJ 900
45m layover
American Airlines
PHLAug 21 21:05
→
LISAug 22 09:05
AA 258Boeing 787
19h 5m·2 stops
$714 USD
British Airways
SEAAug 21 20:20
→
LHRAug 22 13:45
BA 48Boeing 777
3h 25m layover
Iberia Airlines
LHRAug 22 17:10
→
MADAug 22 20:35
IB 720Airbus A320
2h 25m layover
Iberia Airlines
MADAug 22 23:00
→
LISAug 22 23:25
IB 539Airbus A320
18h 25m·1 stop
$812 USD
Aer Lingus
SEAAug 21 19:10
→
DUBAug 22 12:15
EI 52Airbus A330
6h 25m layover
Aer Lingus
DUBAug 22 18:40
→
LISAug 22 21:35
EI 486Airbus A320
27h 7m·1 stop
$900 USD
American Airlines
SEAAug 21 21:58
→
PHLAug 22 06:16
AA 2886Airbus A321
14h 49m layover
American Airlines
PHLAug 22 21:05
→
LISAug 23 09:05
AA 258Boeing 787
18h 35m·2 stops
$1,252 USD
British Airways
SEAAug 21 13:30
→
LHRAug 22 06:45
BA 52Boeing 787-10
2h 30m layover
Iberia Airlines
LHRAug 22 09:15
→
MADAug 22 12:40
IB 712Airbus A320
3h layover
Iberia Airlines
MADAug 22 15:40
→
LISAug 22 16:05
IB 1143Canadair RJ 1000
18h 35m·2 stops
$1,252 USD
British Airways
SEAAug 21 13:30
→
LHRAug 22 06:45
BA 52Boeing 787-10
4h 5m layover
Iberia Airlines
LHRAug 22 10:50
→
MADAug 22 14:15
IB 714Airbus A320
1h 25m layover
Iberia Airlines
MADAug 22 15:40
→
LISAug 22 16:05
IB 1143Canadair RJ 1000
17h 58m·2 stops
$3,458 USD
American Airlines
SEAAug 21 14:07
→
DFWAug 21 20:13
AA 717Airbus A321
1h 32m layover
Iberia Airlines
DFWAug 21 21:45
→
MADAug 22 14:25
IB 364Airbus A330
1h 15m layover
Iberia Airlines
MADAug 22 15:40
→
LISAug 22 16:05
IB 1143Canadair RJ 1000
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