Cheap flights from Siem Reap to Singapore from $145 SAI → SIN
Siem Reap International Airport (SAI) → Changi International Airport (SIN)
The cheapest return found recently is $414 with Vietnam Airlines, 28 Nov – 30 Nov, found 7 days ago. The cheapest one-way found recently is $145 with Vietjet, 2 Aug 2027, found 3 days ago.
- Cheapest one-way found recently
- $145, found 3 days ago
- Cheapest return found recently
- $414, 28 Nov to 30 Nov
- Cheapest month to fly
- January 2027, one-way fares from $135 found in the last 7 days
Return
Not enough comparable prices yet for a usual return price.
Cheapest return found recently
$414
28 Nov – 30 Nov · Vietnam Airlines
Siem Reap International Airport (SAI) → Changi International Airport (SIN)
Leaves 9:30 p.m. · Return leaves 8:55 a.m. · 20 h 30 min of travel, both ways together
out 1 stop, back 1 stop
found 7 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$414 28 Nov – 30 Novfound 7 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 46 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $276 to $405.
At $414, the cheapest return found recently is above that range.
Those were the prices on those days, not today's.
Is this a good return price?
Not enough comparable prices yet: we hold return fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other 2-night return fares leaving within 3 days of 28 Nov to compare.
Every date we hold
1 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 28 Nov – 30 Nov | $414 | Vietnam Airlines | Siem Reap International Airport (SAI) → Changi International Airport (SIN) | out 1 stop, back 1 stop | found 7 days ago | See prices for these dates |
Airlines on the cheapest dates: Vietnam Airlines.
One-way
The cheapest one-way fare on each of 9 departure dates is usually $146 to $166.
Cheapest one-way found recently
$145
2 Aug 2027 · Vietjet
Siem Reap International Airport (SAI) → Changi International Airport (SIN)
Leaves 7:05 p.m. · 17 h 35 min trip
1 stop
found 3 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$145 2 Aug 2027found 3 days agoOpen this trip
$135 28 Jan 2027found 5 days agoOpen this trip
What have prices looked like?
Over 49 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $100 to $155.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 9 departure dates from 28 Jan 2027 to 2 Aug 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 2 Aug 2027 to compare.
Every date we hold
10 fares on 9 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 28 Jan 2027 | $135 | Vietjet | Siem Reap International Airport (SAI) → Changi International Airport (SIN) | 1 stop | found 5 days ago | Open this trip |
| 27 Feb 2027 | $166 | AirAsia Cambodia | Siem Reap International Airport (SAI) → Changi International Airport (SIN) | stops unknown | found 3 days ago | Open this trip |
| 17 Mar 2027 | $146 | Vietjet | Siem Reap International Airport (SAI) → Changi International Airport (SIN) | 1 stop | found 7 days ago | Open this trip |
| 11 Apr 2027 | $155 | Vietjet | Siem Reap International Airport (SAI) → Changi International Airport (SIN) | 1 stop | found 3 days ago | Open this trip |
| 12 Apr 2027 | $154 | Vietjet | Siem Reap International Airport (SAI) → Changi International Airport (SIN) | 1 stop | found 3 days ago | Open this trip |
| 13 Apr 2027 | $215 | Vietjet | Siem Reap International Airport (SAI) → Changi International Airport (SIN) | 1 stop | found 3 days ago | Open this trip |
| 15 Apr 2027 | $199 | Vietjet | Siem Reap International Airport (SAI) → Changi International Airport (SIN) | 1 stop | found 3 days ago | Open this trip |
| 17 Apr 2027 | $154 | Vietjet | Siem Reap International Airport (SAI) → Changi International Airport (SIN) | 1 stop | found 3 days ago | Open this trip |
| 2 Aug 2027 | $145 | Vietjet | Siem Reap International Airport (SAI) → Changi International Airport (SIN) | 1 stop | found 3 days ago | Open this trip |
Which month looks cheapest?
January 2027 is the cheapest month — from $135.
Airlines on the cheapest dates: Vietjet, AirAsia Cambodia.
Premium cabin fares from Siem Reap to Singapore
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 28 Nov – 30 Nov in another cabin: Premium economy · Business · First
Today's prices for 2 Aug 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Siem Reap to Singapore?
Return
Fares 180 or more days before departure were typically 33% lower than 14 to 29 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (46 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 14–29 days | $414 | $410 | +50% | 9 |
| 30–59 days | $374 | $346 | +36% | 14 |
| 60–89 days | $376 | $327 | +36% | 23 |
| 90–179 days | $333 | $292 | +21% | 26 |
| 180+ days | $276 | $276 | Cheapest seen | 8 |
One-way
The cheapest fares were 14 to 29 days before departure.
From the cheapest one-way each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 7–13 days | $108 | $102 | +3% | 9 |
| 14–29 days | $105 | $101 | Cheapest seen | 13 |
| 30–59 days | $108 | $100 | +3% | 39 |
| 60–89 days | $135 | $105 | +29% | 36 |
| 90–179 days | $146 | $105 | +39% | 29 |
| 180+ days | $138 | $135 | +31% | 34 |
Live price for these dates
The cheapest return found recently is for 28 Nov – 30 Nov. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Siem Reap to Singapore?
The cheapest return found recently is $414 with Vietnam Airlines, 28 Nov to 30 Nov, found 7 days ago.
How much is a one-way flight from Siem Reap to Singapore?
The cheapest one-way found recently is $145 with Vietjet, 2 Aug 2027, found 3 days ago. The cheapest one-way we hold, of any age, is $135 with Vietjet, 28 Jan 2027, found 5 days ago. The cheapest one-way fare on each of 9 departure dates is usually $146 to $166.
What is the cheapest month to fly from Siem Reap to Singapore?
January 2027 is the cheapest month for a one-way, from $135, 28 Jan 2027, found 5 days ago.
How far ahead should I book a flight from Siem Reap to Singapore?
In 46 days of prices between 24 Sept and 11 Nov, return fares 180 or more days before departure were typically 33% lower than 14 to 29 days before departure. In 49 days of prices between 24 Sept and 11 Nov, one-way fares were cheapest 14 to 29 days before departure.
How long is the flight from Siem Reap to Singapore?
The cheapest one-way found recently, with Vietjet on 2 Aug 2027, takes 17 h 35 min with 1 stop.
Which airlines have the cheapest flights from Siem Reap to Singapore?
Between 28 Jan 2027 and 2 Aug 2027, Vietjet has the cheapest one-way on 8 of the 9 departure dates we hold, and AirAsia Cambodia on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work