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Cheap flights from Southeast Asia to Siem Reap, Cambodia

BKK — SAI
29 Sep — 6 Oct1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Southeast Asia to Siem Reap

Round-trip from

£141

One-way from

£72
Vietnam Airlines
  • Vietnam Airlines
  • 7/10-11/10
  • 2 total stops
  • 24h 15m total
  • Southeast Asia to Siem Reap
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VietJet Air
  • VietJet Air
  • 15/9
  • 1 total stop
  • 21h 20m total
  • Southeast Asia to Siem Reap
Search Deals

Cheapflights Insights

Everything you need to know about your flight from Southeast Asia to Siem Reap

How far ahead should I book a flight from Southeast Asia to Siem Reap?

The best time to book flights from Southeast Asia to Siem Reap is 15 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Southeast Asia to Siem Reap?

Currently, July is the cheapest month in which you can book a flight from Southeast Asia to Siem Reap (average of £112). Flying from Southeast Asia to Siem Reap in May is currently the most expensive (average of £191). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YJX to SAI?

One of the essential ways to save on airfare from Southeast Asia to Siem Reap is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 42% on airfare.

What is the cheapest day to fly from Southeast Asia to Siem Reap?

Travellers seeking maximum savings on their Southeast Asia to Siem Reap flight should consider departing on Thursday evenings when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Siem Reap

Read reviews from past customers who have flown with Singapore Airlines,Vietnam Airlines, andVietJet Air from Southeast Asia to Siem Reap. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very Good
1,591 reviews
Check prices

Food

7.8

Crew

8.6

Entertainment

8.1

Overall

8.2

Boarding

8.3

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Walter,Aug 2026

DPS - SIN

My experience with Cathay Pacific started badly and only became more frustrating as the trip continued. It began when my original flight, which I had booked in Business Class, was canceled. Because of the cancellation, I was involuntarily downgraded. I understood that disruptions happen and was willing to accept the downgrade, but the way Cathay Pacific handled the situation afterward was extremely disappointing. The biggest issue was the lack of communication between airports. When I arrived at the next airport, the staff apparently had no record or confirmation that Cathay Pacific had downgraded me. As a result, I was forced to wait approximately an hour and a half while they tried to verify what had happened and determine how to handle my reservation. This happened at around 2:00 a.m., after an exhausting travel day that had already stretched to roughly 22 hours because of delays. At that point, I was completely exhausted and simply wanted to get to my destination and rest. Having to spend another 90 minutes resolving an issue that should have already been documented and communicated internally made an already difficult travel experience considerably worse. What was even more disappointing was the refund process. Because I had paid for Business Class but was involuntarily downgraded, I expected the fare difference to be refunded automatically. Instead, I discovered that I had to contact Cathay Pacific myself to request reimbursement. When I called, I was initially told that my situation did not qualify for a refund and that I would only be offered a travel voucher. I found that response unacceptable. I had paid for Business Class transportation that Cathay Pacific ultimately did not provide. A voucher requiring me to spend money with the airline again is not the same as refunding money for a service that was never delivered. After several heated minutes of discussion, Cathay Pacific finally agreed to refund both tickets. The cancellation itself was understandable. Even the involuntary downgrade was something I was prepared to accept given the circumstances. What made this experience unacceptable was the poor communication between airports, the lengthy middle-of-the-night delay caused by Cathay Pacific’s internal handling of the downgrade, and then having to argue simply to receive a refund for the Business Class service I had paid for but did not receive. For an airline that markets itself as a premium international carrier, I expected significantly better communication, customer service, and handling of an involuntary downgrade. Unfortunately, after this experience, Cathay Pacific has lost my confidence as a customer. This will be the last time I choose to fly with them.
Singapore Airlines
8.2
Very Good
1,591 reviews
Singapore Airlines
8.2
Very Good
1,591 reviews
Check prices

Food

7.8

Crew

8.6

Entertainment

8.1

Overall

8.2

Boarding

8.3

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Walter,Aug 2026

DPS - SIN

My experience with Cathay Pacific started badly and only became more frustrating as the trip continued. It began when my original flight, which I had booked in Business Class, was canceled. Because of the cancellation, I was involuntarily downgraded. I understood that disruptions happen and was willing to accept the downgrade, but the way Cathay Pacific handled the situation afterward was extremely disappointing. The biggest issue was the lack of communication between airports. When I arrived at the next airport, the staff apparently had no record or confirmation that Cathay Pacific had downgraded me. As a result, I was forced to wait approximately an hour and a half while they tried to verify what had happened and determine how to handle my reservation. This happened at around 2:00 a.m., after an exhausting travel day that had already stretched to roughly 22 hours because of delays. At that point, I was completely exhausted and simply wanted to get to my destination and rest. Having to spend another 90 minutes resolving an issue that should have already been documented and communicated internally made an already difficult travel experience considerably worse. What was even more disappointing was the refund process. Because I had paid for Business Class but was involuntarily downgraded, I expected the fare difference to be refunded automatically. Instead, I discovered that I had to contact Cathay Pacific myself to request reimbursement. When I called, I was initially told that my situation did not qualify for a refund and that I would only be offered a travel voucher. I found that response unacceptable. I had paid for Business Class transportation that Cathay Pacific ultimately did not provide. A voucher requiring me to spend money with the airline again is not the same as refunding money for a service that was never delivered. After several heated minutes of discussion, Cathay Pacific finally agreed to refund both tickets. The cancellation itself was understandable. Even the involuntary downgrade was something I was prepared to accept given the circumstances. What made this experience unacceptable was the poor communication between airports, the lengthy middle-of-the-night delay caused by Cathay Pacific’s internal handling of the downgrade, and then having to argue simply to receive a refund for the Business Class service I had paid for but did not receive. For an airline that markets itself as a premium international carrier, I expected significantly better communication, customer service, and handling of an involuntary downgrade. Unfortunately, after this experience, Cathay Pacific has lost my confidence as a customer. This will be the last time I choose to fly with them.
Vietnam Airlines
7.7
Good
286 reviews
Singapore Airlines
8.2
Very Good
1,591 reviews
Check prices

Food

7.8

Crew

8.6

Entertainment

8.1

Overall

8.2

Boarding

8.3

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Walter,Aug 2026

DPS - SIN

My experience with Cathay Pacific started badly and only became more frustrating as the trip continued. It began when my original flight, which I had booked in Business Class, was canceled. Because of the cancellation, I was involuntarily downgraded. I understood that disruptions happen and was willing to accept the downgrade, but the way Cathay Pacific handled the situation afterward was extremely disappointing. The biggest issue was the lack of communication between airports. When I arrived at the next airport, the staff apparently had no record or confirmation that Cathay Pacific had downgraded me. As a result, I was forced to wait approximately an hour and a half while they tried to verify what had happened and determine how to handle my reservation. This happened at around 2:00 a.m., after an exhausting travel day that had already stretched to roughly 22 hours because of delays. At that point, I was completely exhausted and simply wanted to get to my destination and rest. Having to spend another 90 minutes resolving an issue that should have already been documented and communicated internally made an already difficult travel experience considerably worse. What was even more disappointing was the refund process. Because I had paid for Business Class but was involuntarily downgraded, I expected the fare difference to be refunded automatically. Instead, I discovered that I had to contact Cathay Pacific myself to request reimbursement. When I called, I was initially told that my situation did not qualify for a refund and that I would only be offered a travel voucher. I found that response unacceptable. I had paid for Business Class transportation that Cathay Pacific ultimately did not provide. A voucher requiring me to spend money with the airline again is not the same as refunding money for a service that was never delivered. After several heated minutes of discussion, Cathay Pacific finally agreed to refund both tickets. The cancellation itself was understandable. Even the involuntary downgrade was something I was prepared to accept given the circumstances. What made this experience unacceptable was the poor communication between airports, the lengthy middle-of-the-night delay caused by Cathay Pacific’s internal handling of the downgrade, and then having to argue simply to receive a refund for the Business Class service I had paid for but did not receive. For an airline that markets itself as a premium international carrier, I expected significantly better communication, customer service, and handling of an involuntary downgrade. Unfortunately, after this experience, Cathay Pacific has lost my confidence as a customer. This will be the last time I choose to fly with them.
VietJet Air
5.6
Fair
174 reviews
Singapore Airlines
8.2
Very Good
1,591 reviews
Check prices

Food

7.8

Crew

8.6

Entertainment

8.1

Overall

8.2

Boarding

8.3

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Walter,Aug 2026

DPS - SIN

My experience with Cathay Pacific started badly and only became more frustrating as the trip continued. It began when my original flight, which I had booked in Business Class, was canceled. Because of the cancellation, I was involuntarily downgraded. I understood that disruptions happen and was willing to accept the downgrade, but the way Cathay Pacific handled the situation afterward was extremely disappointing. The biggest issue was the lack of communication between airports. When I arrived at the next airport, the staff apparently had no record or confirmation that Cathay Pacific had downgraded me. As a result, I was forced to wait approximately an hour and a half while they tried to verify what had happened and determine how to handle my reservation. This happened at around 2:00 a.m., after an exhausting travel day that had already stretched to roughly 22 hours because of delays. At that point, I was completely exhausted and simply wanted to get to my destination and rest. Having to spend another 90 minutes resolving an issue that should have already been documented and communicated internally made an already difficult travel experience considerably worse. What was even more disappointing was the refund process. Because I had paid for Business Class but was involuntarily downgraded, I expected the fare difference to be refunded automatically. Instead, I discovered that I had to contact Cathay Pacific myself to request reimbursement. When I called, I was initially told that my situation did not qualify for a refund and that I would only be offered a travel voucher. I found that response unacceptable. I had paid for Business Class transportation that Cathay Pacific ultimately did not provide. A voucher requiring me to spend money with the airline again is not the same as refunding money for a service that was never delivered. After several heated minutes of discussion, Cathay Pacific finally agreed to refund both tickets. The cancellation itself was understandable. Even the involuntary downgrade was something I was prepared to accept given the circumstances. What made this experience unacceptable was the poor communication between airports, the lengthy middle-of-the-night delay caused by Cathay Pacific’s internal handling of the downgrade, and then having to argue simply to receive a refund for the Business Class service I had paid for but did not receive. For an airline that markets itself as a premium international carrier, I expected significantly better communication, customer service, and handling of an involuntary downgrade. Unfortunately, after this experience, Cathay Pacific has lost my confidence as a customer. This will be the last time I choose to fly with them.

Related info for your journey

  • What airport do you fly into for flights to Siem Reap from Southeast Asia?

    Siem Reap–Angkor Intl (SAI) is the airport you will fly into if you book a flight from Southeast Asia to Siem Reap. It is only a 24.7 mi journey from Siem Reap–Angkor Intl (SAI) to Siem Reap’s city center.

  • How long is the flight from Southeast Asia to Siem Reap?

    Vietnam Airlines, Singapore Airlines, and Emirates can get you from Southeast Asia to Siem Reap in just under 1h 20m. Your travel time can differ by up to 16h 50m. The distance from Southeast Asia to Siem Reap is about 234 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Southeast Asia to Siem Reap one-way?

    £35 is the cheapest one-way deal found within the past few days, from Cambodia Angkor Air. You may also be able to find cheap deals on Malaysia Airlines and AirAsia Cambodia, with prices starting from £37 and £39, respectively.

  • What are the most popular routes from Southeast Asia to Siem Reap?

    When deciding which route to take from Southeast Asia to Siem Reap consider Bangkok Suvarnabhumi - Siem Reap–Angkor Intl, Da Nang - Siem Reap–Angkor Intl or Singapore Changi - Siem Reap–Angkor Intl as they are the most popular.

  • What are the most reliable airlines from Southeast Asia to Siem Reap?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Southeast Asia to Siem Reap on time: Finnair (85%), Emirates (81%), Qantas Airways (77%).

  • What are the cheapest flights from Southeast Asia to Siem Reap?

    The cheapest flight price from Southeast Asia to Siem Reap is £80. On average you can expect to pay £93. The most popular route, (Bangkok Suvarnabhumi - Siem Reap–Angkor Intl), can usually be booked for £202.

  • Can I find deals for flights from Southeast Asia to Siem Reap that include hotel bookings?

    Yes. In addition to deals on Southeast Asia to Siem Reap flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Southeast Asia to Siem Reap?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southeast Asia to Siem Reap.

  • Can I find deals for business class flights from Southeast Asia to Siem Reap?

    Yes. Cheapflights offers flight deals from Southeast Asia to Siem Reap by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Southeast Asia to Siem Reap?

    Currently, July is the cheapest month in which you can book a flight from Southeast Asia to Siem Reap (average of £112). Flying from Southeast Asia to Siem Reap in May is currently the most expensive (average of £191). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Southeast Asia to Siem Reap

Suvarnabhumi to Siem Reap flights
Da Nang to Siem Reap flights
Hong Kong to Siem Reap flights
Ho Chi Minh City to Siem Reap flights
Singapore to Siem Reap flights

Top 5 airlines flying from Southeast Asia to Siem Reap

AirlineCheapestAverageFlexibilityOn-time
Thai AirAsiaCheapest£106Average£155FlexibilityNo cancel feeOn-time87%
Search Thai AirAsia flights
Cambodia Angkor AirCheapest£122Average£212FlexibilityNo cancel feeOn-timeN/A
Search Cambodia Angkor Air flights
Bangkok AirwaysCheapest£154Average£186FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Vietnam AirlinesCheapest£157Average£302FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
Singapore AirlinesCheapest£179Average£198FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights

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When you search for this flight from Southeast Asia to Siem Reap, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Southeast Asia to Siem Reap?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Siem Reap from Southeast Asia.

Can Cheapflights find flights from Southeast Asia to Siem Reap with no change fees?

Yes, we can. To see specific flights from Southeast Asia to Siem Reap with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Southeast Asia to Siem Reap become cheaper?

Not ready to book yet? You can track prices for flights from Southeast Asia to Siem Reap on Cheapflights with our Price Alert feature and get notified when better prices are available.

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