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 agoDecember 2026
Mon
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Fair Availability
30% of dates checked are available within 10% of the lowest price
Friday, December 25th, 2026
Outbound Flights
19h 40m·1 stop
$431 USD
SEADec 25 18:45
→LHRDec 26 12:10
BA 48Boeing 787-10
7h 30m layover
LHRDec 26 19:40
→LISDec 26 22:25
BA 512Airbus A320neo
12h 55m·1 stop
$438 USD
SEADec 25 12:10
→PHLDec 25 20:17
AA 467Airbus A321
1h 8m layover
PHLDec 25 21:25
→LISDec 26 09:05
AA 258Boeing 787
25h 58m·1 stop
$453 USDSEADec 25 23:07
→PHLDec 26 07:08
AA 2500Airbus A321neo
14h 17m layover
PHLDec 26 21:25
→LISDec 27 09:05
AA 258Boeing 787
18h 15m·2 stops
$546 USD
SEADec 25 15:40
→PDXDec 25 16:37
AS 3290Embraer 175
1h 8m layover
PDXDec 25 17:45
→LHRDec 26 11:20
BA 266Boeing 787
3h 40m layover
LHRDec 26 15:00
→LISDec 26 17:55
BA 510Airbus A320neo
15h 10m·1 stop
$595 USDSEADec 25 18:45
→LHRDec 26 12:10
BA 48Boeing 787-10
2h 50m layover
LHRDec 26 15:00
→LISDec 26 17:55
BA 510Airbus A320neo
17h 19m·2 stops
$1,102 USDSEADec 25 10:31
→ORDDec 25 16:55
AA 2112Boeing 737
45m layover
ORDDec 25 17:40
→MADDec 26 08:50
IB 342Airbus A330
2h 35m layover
MADDec 26 11:25
→LISDec 26 11:50
IB 1141Canadair RJ 1000
16h 58m·2 stops
$1,212 USDSEADec 25 10:52
→ORDDec 25 17:01
AS 429Boeing 737
39m layover
ORDDec 25 17:40
→MADDec 26 08:50
IB 342Airbus A330
2h 35m layover
MADDec 26 11:25
→LISDec 26 11:50
IB 1141Canadair RJ 1000
17h 40m·2 stops
$1,436 USDSEADec 25 06:00
→CLTDec 25 14:00
AA 3068Airbus A321
1h 45m layover
CLTDec 25 15:45
→MADDec 26 05:45
AA 748Boeing 777
1h 30m layover
MADDec 26 07:15
→LISDec 26 07:40
IB 529Airbus A320