Route guide

Siem Reap to Singapore (SAI-SIN): Nonstop Upgrade & Award Space

Singapore Airlines flies the SAI to SIN nonstop about 10 times a week. That's enough service to give you a real choice of departures, though premium seats don't sit unclaimed for long. 2LNR watches every SAI to SIN departure for confirmed upgrade and award space and can alert you when a date you're tracking opens up.

Data current as of July 21, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

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10
Nonstop flights a week
830 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every SAI to SIN departure

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Open the calendar for Siem Reap to Singapore to see which departures have real space, or watch the route and get alerted when space opens.

See real availability

Confirmed upgrade and award seats on each SAI to SIN 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 SAI to SIN on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Siem Reap to Singapore nonstop

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

  • Singapore Airlines
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Frequently asked questions about SAI to SIN

How far is Singapore from Siem Reap?
SAI to SIN covers about 830 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from SAI to SIN?
Singapore Airlines is currently the only airline flying SAI to SIN nonstop. 2LNR tracks confirmed upgrade and award space on every Singapore Airlines departure.
How many flights a week are there from SAI to SIN?
About 10 nonstop flights a week run between Siem Reap and Singapore in the current schedule, operated by Singapore Airlines. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on SAI to SIN?
Open the SAI to SIN calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Siem Reap to Singapore route, and 2LNR will notify you when space opens. It's free to start.

Never miss SAI to SIN upgrade or award space

Track confirmed availability, set alerts, and book with confidence. Free to start, no credit card required.

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