Seattle / Tacoma (SEA) to Lisbon (LIS) flight deal in economy from $380
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
LISPortela Airport
Lisbon, Portugal
$527 USD
-28%$380 USD
Verified 14 days agoAugust 2026
Mon
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Fair Availability
30% of dates checked are available within 10% of the lowest price
Monday, August 31st, 2026
Outbound Flights
13h 35m·1 stop
$797 USD
SEAAug 31 20:20
→LHRSep 1 13:45
BA 48Boeing 777
1h 15m layover
LHRSep 1 15:00
→LISSep 1 17:55
BA 506Airbus A320
15h 25m·1 stop
$798 USDSEAAug 31 13:30
→LHRSep 1 06:45
BA 52Boeing 787-10
3h 15m layover
LHRSep 1 10:00
→LISSep 1 12:55
BA 502Airbus A320
18h 15m·1 stop
$798 USDSEAAug 31 13:30
→LHRSep 1 06:45
BA 52Boeing 787-10
6h 5m layover
LHRSep 1 12:50
→LISSep 1 15:45
BA 504Airbus A320
16h 55m·1 stop
$805 USD
SEAAug 31 08:10
→PHLAug 31 16:32
AA 986Airbus A321
4h 33m layover
PHLAug 31 21:05
→LISSep 1 09:05
AA 258Boeing 787
15h·2 stops
$805 USD
SEAAug 31 10:05
→CVGAug 31 17:39
AS 451Boeing 737
53m layover
CVGAug 31 18:32
→PHLAug 31 20:20
AA 5515Canadair RJ 900
45m layover
PHLAug 31 21:05
→LISSep 1 09:05
AA 258Boeing 787
27h 7m·1 stop
$828 USDSEAAug 31 21:58
→PHLSep 1 06:16
AA 2886Airbus A321
14h 49m layover
PHLSep 1 21:05
→LISSep 2 09:05
AA 258Boeing 787
18h 35m·2 stops
$887 USDSEAAug 31 13:30
→LHRSep 1 06:45
BA 52Boeing 787-10
4h 5m layover
LHRSep 1 10:50
→MADSep 1 14:15
IB 714Airbus A320
1h 25m layover
MADSep 1 15:40
→LISSep 1 16:05
IB 1143Canadair RJ 1000
18h 25m·1 stop
$910 USD
SEAAug 31 19:10
→DUBSep 1 12:15
EI 52Airbus A330
6h 25m layover
DUBSep 1 18:40
→LISSep 1 21:35
EI 486Airbus A320
18h 41m·2 stops
$983 USDSEAAug 31 13:24
→ORDAug 31 19:59
AA 2966Airbus A321
2h 26m layover
ORDAug 31 22:25
→MADSep 1 13:30
AA 126Boeing 787
2h 10m layover
MADSep 1 15:40
→LISSep 1 16:05
IB 1143Canadair RJ 1000
19h 17m·2 stops
$1,190 USDSEAAug 31 08:33
→ORDAug 31 14:47
AS 265Boeing 737
2h 8m layover
ORDAug 31 16:55
→MADSep 1 08:20
IB 342Airbus A330
3h 5m layover
MADSep 1 11:25
→LISSep 1 11:50
IB 531Airbus A320