SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
SINSingapore Changi Airport
Singapore, Singapore
$583 USD
-27%$423 USD
Verified Nov 29, 2025 at 6:48 PMFair Availability
29% of dates checked are available within 10% of the lowest price
Wednesday, January 28th, 2026
Outbound Flights
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39h 40m·1 stop
$450 USD
SEAJan 28 12:35
→SFOJan 28 14:53
UA 1482Boeing 737MAX 8 Passenger
19h 42m layover·Overnight
SFOJan 29 10:35
→SINJan 30 20:15
UA 29Boeing 787
22h 12m·1 stop
$478 USDSEAJan 28 06:03
→SFOJan 28 08:41
UA 5676Embraer 175
1h 54m layover
SFOJan 28 10:35
→SINJan 29 20:15
UA 29Boeing 787
35h 5m·1 stop
$622 USDSEAJan 28 17:10
→SFOJan 28 19:28
UA 737Airbus A320
15h 7m layover·Overnight
SFOJan 29 10:35
→SINJan 30 20:15
UA 29Boeing 787
32h 43m·1 stop
$752 USDSEAJan 28 19:32
→SFOJan 28 21:50
UA 1665Boeing 737
12h 45m layover·Overnight
SFOJan 29 10:35
→SINJan 30 20:15
UA 29Boeing 787
27h 25m·1 stop
$1,908 USDSEAJan 28 12:35
→SFOJan 28 14:53
UA 1482Boeing 737MAX 8 Passenger
7h 42m layover
SFOJan 28 22:35
→SINJan 30 08:00
UA 1Boeing 787