Cheap flights from the United Kingdom to Cambodia from £287

LHR — KTI
2 Oct — 9 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Cambodia

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Cambodia

Thu 10/911:15 -
2 stops24h 50m
Thu 8/1019:05 -
2 stops41h 55m
Deal found 28/8£529
Thu 3/1206:00 -
2 stops29h 45m
Mon 14/1209:55 -
2 stops35h 10m
Deal found 1/9£610
Mon 28/918:55 -
1 stop16h 15m
Mon 25/121:30 -
1 stop16h 45m
Deal found 30/8£626
Sun 8/1106:00 -
2 stops29h 45m
Wed 27/116:50 -
2 stops25h 25m
Deal found 29/8£627
Mon 30/1106:00 -
2 stops29h 45m
Sun 13/1209:55 -
2 stops18h 45m
Deal found 28/8£635
Sun 27/919:50 -
1 stop15h 20m
Mon 25/118:40 -
1 stop19h 35m
Deal found 30/8£638
Tue 10/1119:25 -
2 stops40h 20m
Sat 5/1209:55 -
2 stops29h 25m
Deal found 31/8£641
Tue 10/1106:30 -
2 stops44h 25m
Sat 5/1209:55 -
2 stops18h 45m
Deal found 1/9£643
Mon 30/1111:35 -
2 stops23h 30m
Sun 13/1213:20 -
1 stop33h 15m
Deal found 28/8£647
Sat 7/1107:55 -
3 stops25h 10m
Fri 13/1119:05 -
3 stops31h 55m
Deal found 28/8£648
Wed 30/906:00 -
2 stops30h 55m
Wed 7/1019:35 -
2 stops18h 45m
Deal found 31/8£652
Thu 3/911:15 -
2 stops24h 50m
Thu 24/912:55 -
2 stops24h 00m
Deal found 29/8£653

Find flight deals from United Kingdom to Cambodia

Round-trip from

£529

One-way from

£287

Popular in

July

Cheapest in

November

Average price

£624
10/9-8/10
  • 10/9-8/10
  • 4 total stops
  • 66h 45m total
  • United Kingdom to Cambodia
7/9
  • 7/9
  • 3 total stops
  • 42h 25m total
  • United Kingdom to Cambodia
Highest demand for flights based on searches. 14% potential increase in price (£82 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).
Average for round-trip flights in September 2026

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from the United Kingdom to Cambodia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BirminghamSiem Reap

BHX Birmingham - SAI Siem Reap–Angkor Intl

BHXSAI

Birmingham

Tue 23/2

17:45-18:45

2 stops18h 00m

Siem Reap–Angkor Intl

Thu 11/3

16:50-18:00

2 stops32h 10m

£714

LondonSiem Reap

LCY London City - SAI Siem Reap–Angkor Intl

LCYSAI

London City

Thu 10/9

13:10-18:45

2 stops23h 35m

Siem Reap–Angkor Intl

Thu 8/10

09:40-08:40

2 stops29h 00m

£735
Fastest return journey

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Mon 30/11

21:20-18:45

1 stop14h 25m

Siem Reap–Angkor Intl

Fri 11/12

19:25-05:25

1 stop17h 00m

£754

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Sat 28/11

21:20-18:45

1 stop14h 25m

Siem Reap–Angkor Intl

Sun 13/12

19:25-05:25

1 stop17h 00m

£754

ManchesterSiem Reap

MAN Manchester - SAI Siem Reap–Angkor Intl

MANSAI

Manchester

Sun 13/9

20:45-12:15

2 stops33h 30m

Siem Reap–Angkor Intl

Thu 24/9

15:10-18:50

2 stops33h 40m

£761

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Mon 16/11

11:00-16:55

1 stop22h 55m

Siem Reap–Angkor Intl

Thu 3/12

20:30-07:15

1 stop17h 45m

£762

LondonSiem Reap

STN London Stansted - SAI Siem Reap–Angkor Intl

STNSAI

London Stansted

Thu 22/10

07:55-14:50

3 stops24h 55m

Siem Reap–Angkor Intl

Mon 2/11

19:25-18:00

2 stops29h 35m

£763

ManchesterSiem Reap

MAN Manchester - SAI Siem Reap–Angkor Intl

MANSAI

Manchester

Tue 13/10

09:20-18:55

2 stops27h 35m

Siem Reap–Angkor Intl

Tue 27/10

14:10-06:15

2 stops23h 05m

£764

LondonSiem Reap

STN London Stansted - SAI Siem Reap–Angkor Intl

STNSAI

London Stansted

Wed 30/9

14:55-21:30

2 stops24h 35m

Siem Reap–Angkor Intl

Tue 6/10

23:50-18:45

2 stops24h 55m

£766

BirminghamSiem Reap

BHX Birmingham - SAI Siem Reap–Angkor Intl

BHXSAI

Birmingham

Thu 1/10

06:05-09:40

2 stops45h 35m

Siem Reap–Angkor Intl

Mon 26/10

19:25-10:20

2 stops21h 55m

£780

Flights are sorted by cheapest return flights first.

Deals found on 31/8

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from United Kingdom to Cambodia

Have a flexible travel schedule? Discover the best time to fly to Cambodia from United Kingdom with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Cambodia

What is the cheapest month to book a flight from United Kingdom to Cambodia?

Currently, June is the cheapest month in which you can book a flight from United Kingdom to Cambodia (average of £622). Flying from United Kingdom to Cambodia in July is currently the most expensive (average of £952). 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.

How far ahead should I book a flight from United Kingdom to Cambodia?

The price you pay for your flight from United Kingdom to Cambodia may vary depending on when you book. For the best chance of a lower fare, look to book 83 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Cambodia

Check out reviews from past customers who have flown with Singapore Airlines,Thai Airways, andAir China from the United Kingdom to Cambodia to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.2

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.1

Crew

8.6

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.

Overall

8.2

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.1

Crew

8.6

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.

Overall

8.2

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.1

Crew

8.6

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.

Overall

8.2

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.1

Crew

8.6

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.

Overall

8.2

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.1

Crew

8.6

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.

Overall

8.2

Food

7.8

Boarding

8.3

Comfort

8.0

Entertainment

8.1

Crew

8.6

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

  • How long is the flight from United Kingdom to Cambodia?

    SWISS, British Airways, and Etihad Airways can get you from United Kingdom to Cambodia in just under 14h 25m. Your travel time can differ by up to 19h 05m. There are 6102 mi between United Kingdom and Cambodia. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from United Kingdom to Cambodia one-way?

    One-way options have recently been found by users for as low as £165 on Singapore Airlines. Other airlines that offer cheap prices include Etihad Airways from £238 and China Southern from £251 one-way.

  • Can I find deals for flights from United Kingdom to Cambodia that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Cambodia flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Cambodia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Cambodia.

  • Can I find deals for business class flights from United Kingdom to Cambodia?

    Yes. Cheapflights offers flight deals from United Kingdom to Cambodia 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 United Kingdom to Cambodia?

    Currently, June is the cheapest month in which you can book a flight from United Kingdom to Cambodia (average of £622). Flying from United Kingdom to Cambodia in July is currently the most expensive (average of £952). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for United Kingdom to Cambodia

Top 10 airlines flying from United Kingdom to Cambodia

AirlineCheapestAverageFlexibilityOn-time
China SouthernCheapest£234Average£460FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest£266Average£387FlexibilityNo cancel feeOn-time67%
Search Air China flights
Singapore AirlinesCheapest£359Average£868FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Shenzhen AirlinesCheapest£453Average£603FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
Etihad AirwaysCheapest£502Average£670FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Austrian AirlinesCheapest£535Average£683FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
China EasternCheapest£573Average£630FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Malaysia AirlinesCheapest£583Average£802FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Qatar AirwaysCheapest£587Average£821FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Vietnam AirlinesCheapest£612Average£809FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights

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