Seattle to Singapore (SEA-SIN): nonstop flights and award space

Singapore Airlines flies the SEA to SIN nonstop about 6 times a week. In the timetable below it flies as SQ 27, scheduled at 16h 45m to 17h 5m for the 8,065 miles. 2LNR tracks award seats on Singapore Airlines across every SEA to SIN 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.

Updated .

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6
Flights a week, 4-week average
16h 45m to 17h 5m
Scheduled flight time
8,065 mi
Nonstop distance
Free
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Seattle to Singapore flight schedule

Scheduled nonstop departures for SEA to SIN starting October 23, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Seattle (SEA) to Singapore (SIN)
Date Flight Airline Departs SEA Arrives SIN Duration Aircraft
SQ 27Singapore Airlines09:5517:4016h 45mAirbus A350-900
SQ 27Singapore Airlines09:5517:4016h 45mAirbus A350-900
SQ 27Singapore Airlines09:4017:4517h 5mAirbus A350-900
SQ 27Singapore Airlines09:4017:4517h 5mAirbus A350-900
SQ 27Singapore Airlines09:4017:4517h 5mAirbus A350-900
SQ 27Singapore Airlines09:4017:4517h 5mAirbus A350-900
SQ 27Singapore Airlines09:4017:4517h 5mAirbus A350-900

Showing all 7 scheduled SEA to SIN departures across 7 days with service, starting October 23, 2026. 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 hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure.

See every SEA to SIN date on the interactive map

Aircraft on the Seattle to Singapore nonstop

Singapore Airlines flies the Airbus A350-900 on every departure in the schedule table on this page. Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure.

Award seats on SEA to SIN departures

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

Singapore Airlines award space was open on 7 of the 9 Seattle to Singapore departure dates from October 19 to November 1 that 2LNR checked in the 7 days to October 19, 2026.

See real availability

Award seats by date on the SEA to SIN departures 2LNR tracks, checked against live inventory so you know what's open before you book.

Set an alert

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

Plan on the map

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

Airlines flying Seattle to Singapore nonstop

Carriers operating SEA to SIN nonstop in the current schedule. Where 2LNR tracks the carrier, its departures show award space by date.

See SEA to SIN on the interactive map →

Frequently asked questions about SEA to SIN

How long is the flight from Seattle (SEA) to Singapore (SIN)?
Scheduled flight times from Seattle (SEA) to Singapore (SIN) run from 16h 45m to 17h 5m across the departures in the schedule table on this page. The nonstop covers about 8,065 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from SEA to SIN?
Singapore Airlines is currently the only airline flying SEA to SIN nonstop. 2LNR tracks award seats on Singapore Airlines.
How many flights a week are there from SEA to SIN?
About 6 nonstop flights a week run between Seattle (SEA) and Singapore (SIN) 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 SEA to SIN depart?
Scheduled SEA to SIN nonstops in the next 7 days with service leave between 09:40 and 09:55, local time at Seattle. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate SEA to SIN nonstop?
Singapore Airlines flies SQ 27 nonstop from Seattle (SEA) to Singapore (SIN), the only flight number in the schedule table on this page. The table lists each date with its departure and arrival times and aircraft.
How do I check award availability on SEA to SIN?
Open the SEA to SIN 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.

See SEA to SIN award space by date

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

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