Seattle / Tacoma (SEA) to Singapore (SIN) flight deal in economy from $405

United AirlinesUAUnited Airlines
One Way•Economy
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
SingaporeSIN

Singapore Changi Airport

Singapore, Singapore
$681 USD
-41%$405 USD
Verified 1 day ago
Limited Availability
17% of dates checked are available within 10% of the lowest price

Tuesday, September 1st, 2026

Outbound Flights

20h 24m·1 stop
$405 USD
United Airlines
SEASep 1 07:11
→
SFOSep 1 09:30
UA 499Boeing 737MAX 8 Passenger
1h 40m layover
United Airlines
SFOSep 1 11:10
→
SINSep 2 18:35
UA 29Boeing 787
23h 10m·1 stop
$410 USD
All Nippon Airways
SEASep 1 16:30
→
HNDSep 2 19:00
NH 117Boeing 787
5h 40m layover·Overnight
All Nippon Airways
HNDSep 3 00:40
→
SINSep 3 06:40
NH 843Boeing 787
34h 15m·1 stop
$417 USD
United Airlines
SEASep 1 17:20
→
SFOSep 1 19:42
UA 737Boeing 737MAX 9 Passenger
15h 28m layover·Overnight
United Airlines
SFOSep 2 11:10
→
SINSep 3 18:35
UA 29Boeing 787
23h 15m·2 stops
$417 USD
United Airlines
SEASep 1 09:05
→
SFOSep 1 11:24
UA 2831Airbus A320
1h 1m layover
United Airlines
SFOSep 1 12:25
→
NRTSep 2 15:00
UA 837Boeing 777
2h 15m layover
All Nippon Airways
NRTSep 2 17:15
→
SINSep 2 23:20
NH 803Boeing 787
21h 55m·1 stop
$811 USD
United Airlines
SEASep 1 17:20
→
SFOSep 1 19:42
UA 737Boeing 737MAX 9 Passenger
3h 8m layover
United Airlines
SFOSep 1 22:50
→
SINSep 3 06:15
UA 1Boeing 787
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