Singapore to Seattle (SIN-SEA): nonstop upgrade & award space

Singapore Airlines flies the SIN to SEA nonstop about 5 times a week. With Singapore Airlines flying most of the schedule, the long-haul premium cabin opens when that one carrier decides it does, which is why the calendar matters more than the search. 2LNR tracks award seats on Singapore Airlines across every SIN to SEA date, so you can see whether a seat exists before you move points.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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5
Nonstop flights a week
8,065 mi
Nonstop distance
Free
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Singapore to Seattle flight schedule

Scheduled nonstop departures for SIN to SEA, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Singapore (SIN) to Seattle (SEA)
Date Flight Airline Departs SIN Arrives SEA Duration Aircraft
SQ 28Singapore Airlines09:0008:4514h 45m359
SQ 28Singapore Airlines09:0008:4514h 45m359
SQ 28Singapore Airlines09:0008:4514h 45m359
SQ 28Singapore Airlines09:0008:4514h 45m359
SQ 28Singapore Airlines09:0008:4514h 45m359
SQ 28Singapore Airlines09:0008:4514h 45m359
SQ 28Singapore Airlines09:0008:4514h 45m359

Showing all 7 scheduled SIN to SEA departures across the next 7 days with service. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every SIN to SEA date on the interactive map

Award seats on SIN to SEA departures

2LNR tracks award seats on Singapore Airlines, date by date. Open the calendar for Singapore to Seattle to see whether a seat exists before you move points, the next 14 days free on every product and the full horizon on Pro.

See real availability

Confirmed upgrade and award seats on each SIN to SEA departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See SIN to SEA on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Singapore to Seattle nonstop

Carriers operating SIN to SEA nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See SIN to SEA on the interactive map →

Frequently asked questions about SIN to SEA

How far is Seattle from Singapore?
SIN to SEA covers about 8,065 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from SIN to SEA?
Singapore Airlines is currently the only airline flying SIN to SEA nonstop. 2LNR tracks award seats on Singapore Airlines.
How many flights a week are there from SIN to SEA?
About 5 nonstop flights a week run between Singapore and Seattle in the current schedule, operated by Singapore Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from SIN to SEA depart?
In the next 7 days with service, every scheduled SIN to SEA nonstop leaves at 09:00 local time at Singapore. The schedule table on this page lists each departure by date.
How do I check upgrade or award availability on SIN to SEA?
Open the SIN to SEA route on the interactive map or the matrix to see award seats by date on Singapore Airlines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

Never miss SIN to SEA upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

Get started free