Cheap flights from the United Kingdom to Cambodia from £339

LHR — KTI
20 Oct — 27 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

Fri 6/1110:30 -
3 stops27h 30m
Sat 14/1122:00 -
2 stops47h 00m
Deal found 18/9£592
Thu 24/911:35 -
3 stops26h 35m
Wed 7/1021:10 -
2 stops39h 30m
Deal found 19/9£594
Tue 10/1121:00 -
2 stops40h 05m
Sat 5/1221:05 -
2 stops27h 25m
Deal found 20/9£624
Thu 3/1206:00 -
2 stops29h 30m
Mon 14/1209:55 -
2 stops18h 45m
Deal found 16/9£631
Tue 10/1107:10 -
3 stops25h 55m
Thu 26/1112:45 -
2 stops24h 45m
Deal found 16/9£633
Tue 10/1121:00 -
2 stops40h 05m
Thu 3/1221:05 -
2 stops51h 25m
Deal found 20/9£641
Mon 7/1214:00 -
2 stops36h 55m
Thu 20/509:40 -
2 stops28h 35m
Deal found 19/9£673
Thu 24/918:00 -
3 stops35h 10m
Wed 7/1019:05 -
2 stops25h 55m
Deal found 17/9£675
Sun 1/1110:30 -
2 stops40h 05m
Sun 8/1110:30 -
2 stops51h 00m
Deal found 17/9£677
Wed 11/1111:25 -
3 stops26h 45m
Fri 4/1219:05 -
3 stops31h 55m
Deal found 20/9£681
Thu 24/906:40 -
2 stops24h 35m
Wed 7/1009:40 -
2 stops35h 40m
Deal found 18/9£687
Wed 23/906:00 -
2 stops30h 55m
Wed 21/1009:40 -
2 stops36h 45m
Deal found 18/9£688

Find flight deals from United Kingdom to Cambodia

Round-trip from

£592

One-way from

£339

Popular in

July

Cheapest in

November

Average price

£635
China Eastern
  • China Eastern
  • 6/11-14/11
  • 5 total stops
  • 74h 30m total
  • United Kingdom to Cambodia
8/12-31/12
  • 8/12-31/12
  • 3 total stops
  • 43h 00m total
  • United Kingdom to Cambodia
Highest demand for flights based on searches. 13% potential increase in price (£79 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

LondonSiem Reap

STN London Stansted - SAI Siem Reap–Angkor Intl

STNSAI

London Stansted

Tue 8/12

12:55-15:00

2 stops43h 05m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£342

ManchesterSiem Reap

MAN Manchester - SAI Siem Reap–Angkor Intl

MANSAI

Manchester

Tue 8/12

13:55-15:00

3 stops42h 05m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£369

ManchesterSiem Reap

MAN Manchester - SAI Siem Reap–Angkor Intl

MANSAI

Manchester

Mon 7/12

18:30-17:40

2 stops40h 10m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£392

LondonSiem Reap

STN London Stansted - SAI Siem Reap–Angkor Intl

STNSAI

London Stansted

Tue 20/10

08:30-14:05

3 stops23h 35m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£393

LondonSiem Reap

STN London Stansted - SAI Siem Reap–Angkor Intl

STNSAI

London Stansted

Fri 23/10

06:15-14:50

3 stops26h 35m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£409

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Tue 10/11

08:45-16:05

2 stops24h 20m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£429

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Sat 28/11

18:40-18:30

2 stops40h 50m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£433

ManchesterSiem Reap

MAN Manchester - SAI Siem Reap–Angkor Intl

MANSAI

Manchester

Fri 4/12

10:05-18:05

2 stops25h 00m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£438

ManchesterSiem Reap

MAN Manchester - SAI Siem Reap–Angkor Intl

MANSAI

Manchester

Thu 3/12

08:15-10:55

2 stops19h 40m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£444

LondonKrong Preah Sihanouk

LHR London Heathrow - KOS Krong Preah Sihanouk Sihanoukville

LHRKOS

London Heathrow

Mon 28/9

21:20-09:15

2 stops29h 55m

Krong Preah Sihanouk Sihanoukville

Wed 31/12

00:00-18:00

Nonstop0h 00m

£459

Flights are sorted by cheapest return flights first.

Deals found on 19/9

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 £634). Flying from United Kingdom to Cambodia in July is currently the most expensive (average of £962). 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 16 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, andCathay Pacific 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.

Crew

8.6

Overall

8.2

Boarding

8.3

Entertainment

8.1

Comfort

8.0

Food

7.8

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.

Crew

8.6

Overall

8.2

Boarding

8.3

Entertainment

8.1

Comfort

8.0

Food

7.8

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.

Crew

8.6

Overall

8.2

Boarding

8.3

Entertainment

8.1

Comfort

8.0

Food

7.8

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.

Crew

8.6

Overall

8.2

Boarding

8.3

Entertainment

8.1

Comfort

8.0

Food

7.8

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.

Crew

8.6

Overall

8.2

Boarding

8.3

Entertainment

8.1

Comfort

8.0

Food

7.8

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.

Crew

8.6

Overall

8.2

Boarding

8.3

Entertainment

8.1

Comfort

8.0

Food

7.8

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?

    Lufthansa, Emirates, and Vietnam Airlines can get you from United Kingdom to Cambodia in just under 18h. Your travel time can differ by up to 12h 25m. There are 6134 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 £166 on Singapore Airlines. Other airlines that offer cheap prices include Etihad Airways from £242 and China Southern from £253 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 £634). Flying from United Kingdom to Cambodia in July is currently the most expensive (average of £962). 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£237Average£464FlexibilityNo cancel feeOn-time69%
Search China Southern flights
Air ChinaCheapest£268Average£419FlexibilityNo cancel feeOn-time67%
Search Air China flights
Singapore AirlinesCheapest£362Average£885FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Shenzhen AirlinesCheapest£411Average£608FlexibilityNo cancel feeOn-time63%
Search Shenzhen Airlines flights
Etihad AirwaysCheapest£507Average£677FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Austrian AirlinesCheapest£541Average£690FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
China EasternCheapest£579Average£634FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Malaysia AirlinesCheapest£589Average£784FlexibilityNo cancel feeOn-time67%
Search Malaysia Airlines flights
Qatar AirwaysCheapest£593Average£802FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights
Vietnam AirlinesCheapest£618Average£818FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights

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