Siem Reap is one of the easiest short-haul escapes from Changi — the gateway to Angkor Wat is barely over two hours away by air. There is a genuine non-stop option, but it is a full-service hop, so this guide covers who flies it, what a fair return fare looks like in Singapore dollars, and how the newer Siem Reap-Angkor airport changes your arrival.
Route: Singapore Changi (SIN) → Siem Reap-Angkor International (SAI)
Distance: approximately 1,215 km (755 miles)
Non-stop flight time: about 2h 15m
Direct flights: Yes — Singapore Airlines flies non-stop from Changi, from S$ 322 return in our fare data. One-stop routings exist but barely undercut it: the only connection on sale was S$ 291 via Hanoi — about S$ 30 saved for twenty-six extra hours.
Fares from Singapore to Siem Reap (SGD)
Cambodia’s dry season (November–February) is the busy, pricier window — cooler weather and clear skies over the temples — while the green, wetter months (May–September) are the cheapest and quietest. The figures below are typical economy return fares in Singapore dollars; the lowest usually involve a one-stop itinerary, with the Singapore Airlines non-stop sitting toward the higher end.
| Month | Demand | What to expect |
|---|---|---|
| January | — | high |
| February | — | high |
| March | — | medium |
| April | — | medium (Khmer New Year) |
| May | — | low |
| June | — | low |
| July | — | medium (school holidays) |
| August | — | medium |
| September | — | low |
| October | — | low-medium |
| November | — | high |
| December | — | very high |
Checked against every return fare on sale as we write, the floor is S$ 291 and the median S$ 392, so a strong return is under about S$ 324 and there is nothing in the S$ 200s to hold out for. The Singapore Airlines non-stop is better value than it is usually given credit for: it starts at S$ 322, barely S$ 30 above the cheapest connection, and that connection is a 28-hour routing through Hanoi against 2h 15m direct.
Airlines on this route
Non-stop (about 2h 15m):
- Singapore Airlines — the only non-stop operator on the route, flying Changi → Siem Reap-Angkor several times a week on a Boeing 737-8, full-service with a checked bag included.
One-stop (usually cheaper, about 5–9 hours total):
- VietJet Air via Hanoi — the only connection that appeared in our fare check, at S$ 291–S$ 296. Read the timings before you take it: the itinerary runs about 28 hours each way.
- Bangkok Airways / Thai carriers via Bangkok — frequent connections, though none appeared among the cheapest fares when we checked.
- Vietnam Airlines via Ho Chi Minh City and AirAsia / Malaysia Airlines via Kuala Lumpur — regular regional connections, likewise absent from the cheap fares we found.
If your priority is time, the Singapore Airlines non-stop is unbeatable at just over two hours gate to gate — and on the fares we could price it is also the sensible buy on money. The cheapest connection saved about S$ 30 and added roughly 26 hours. Check the total journey time, not just the headline fare, before you take a stop on a route this short.
When to book & how to save
- Book 1–3 months ahead for the best balance of price and choice; short-haul regional fares to Cambodia rarely improve in the final fortnight.
- Travel in the green season (May–September) for the lowest fares — the rain comes in short afternoon bursts, the temples are quieter, and the countryside is lush.
- Avoid the December–January peak and Khmer New Year (mid-April), the busiest and most expensive weeks.
- Compare all-in prices: the Singapore Airlines non-stop includes a checked bag, while the cheapest one-stop "light" fares may not — add bags before you compare.
- Weigh the airport transfer: the new Siem Reap-Angkor airport is farther from town than the old one, so factor the taxi cost and time into a "cheap" one-stop fare.
Arriving in Siem Reap
Flights now land at Siem Reap-Angkor International (SAI), which opened in October 2023 and replaced the old in-town airport (REP). It sits roughly 40 km east of Siem Reap town, so the transfer is longer than travellers may remember: a taxi or pre-booked car takes about 45–60 minutes and costs around US$30–US$35 (about S$40–S$48). Airport shuttle vans and hotel pick-ups are also common and often cheaper if shared. Cambodia offers a visa on arrival (and an e-visa) for most visitors; bring US dollars in cash, which are used everywhere alongside the Cambodian riel.
Frequently asked questions
How long is the flight from Singapore to Siem Reap?
The non-stop flight with Singapore Airlines takes about 2 hours 15 minutes gate to gate. One-stop itineraries via Bangkok, Ho Chi Minh City or Kuala Lumpur typically take 5 to 9 hours in total, depending on the length of the connection.
Are there direct flights from Singapore to Siem Reap?
Yes. Singapore Airlines flies non-stop from Changi to Siem Reap-Angkor International several times a week. It is currently the only non-stop operator on the route, so if you would rather save money, one-stop flights through Bangkok, Ho Chi Minh City or Kuala Lumpur are usually cheaper.
How much does it cost to fly from Singapore to Siem Reap?
A typical economy return runs about S$ 324–S$ 465, median S$ 392, with the fares we could price spanning S$ 291–S$ 553. The best deals start at S$ 291 on a connection and S$ 322 on the Singapore Airlines non-stop, and the December peak sits toward the top of that range.
What is the cheapest month to fly from Singapore to Siem Reap?
May, June and September are usually the cheapest. In the dates we could price, returns started at S$ 291. Avoid December, early January and Khmer New Year in mid-April, which are the busiest and most expensive.
Which airlines fly from Singapore to Siem Reap?
Non-stop: Singapore Airlines only, at S$ 322–S$ 553 and 90 of the hundred cheapest fares. The only connection to appear in our fare check was VietJet Air via Hanoi at S$ 291–S$ 296 — cheaper on paper, but a 28-hour journey. Bangkok Airways and Thai carriers via Bangkok, Vietnam Airlines via Ho Chi Minh City and AirAsia or Malaysia Airlines via Kuala Lumpur also sell the route but none of them appeared among the cheapest when we checked.
Which airport do I fly into in Siem Reap?
You land at Siem Reap-Angkor International Airport (SAI), which opened in October 2023 and replaced the old in-town airport. It is about 40 km east of the town centre, so allow 45–60 minutes and around US$30–US$35 (roughly S$40–S$48) for the taxi in.
How far in advance should I book Singapore to Siem Reap flights?
Aim to book 1 to 3 months ahead. Fares tend to rise as departure approaches, especially around the November–February dry season and the Christmas and New Year peak, so booking early almost always wins on this route.
Is it cheaper to fly on weekdays?
Often, yes — midweek departures (Tuesday to Thursday) are usually a little cheaper than Friday–Sunday, and flying out and back on weekdays can save S$ 20–S$ 60 on a return. Shifting your dates by a day or two is one of the easiest ways to trim the fare.
Fare guidance based on aifly.one deal tracking and current airline schedules; last reviewed July 2026. Prices are indicative economy returns and change with demand — always check the live fare before booking.
