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Cheap flights from London Heathrow Airport to Cambodia from £346

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Cambodia departing on 15/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from London Heathrow Airport to Cambodia

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
09:30 - 18:05
LHR
-
SAI
26h 35m
2 stops
Multiple Airlines Logo
19:05 - 18:45
SAI
-
LHR
29h 40m
2 stops
£592Multiple Airlines
Wed, 10 Jun - Wed, 17 Jun
Multiple Airlines Logo
09:30 - 13:00
LHR
-
KOS
21h 30m
2 stops
Multiple Airlines Logo
12:15 - 07:00
KOS
-
LHR
24h 45m
2 stops
£625Multiple Airlines
Tue, 12 May - Tue, 19 May
Multiple Airlines Logo
21:45 - 11:10
LHR
-
SAI
31h 25m
3 stops
Multiple Airlines Logo
19:05 - 18:45
SAI
-
LHR
29h 40m
2 stops
£642Multiple Airlines
Wed, 10 Jun - Wed, 17 Jun
Multiple Airlines Logo
09:30 - 14:50
LHR
-
SAI
23h 20m
2 stops
Multiple Airlines Logo
10:00 - 07:00
SAI
-
LHR
27h 00m
2 stops
£664Multiple Airlines
Tue, 12 May - Sun, 17 May
Multiple Airlines Logo
09:30 - 18:05
LHR
-
SAI
26h 35m
2 stops
Multiple Airlines Logo
19:05 - 18:45
SAI
-
LHR
53h 40m
2 stops
£674Multiple Airlines
Sun, 10 May - Mon, 18 May
Multiple Airlines Logo
09:30 - 18:05
LHR
-
SAI
26h 35m
2 stops
Multiple Airlines Logo
11:55 - 12:45
SAI
-
LHR
30h 50m
3 stops
£694Multiple Airlines
Sun, 17 May - Sun, 24 May
Multiple Airlines Logo
09:30 - 14:50
LHR
-
SAI
23h 20m
2 stops
Multiple Airlines Logo
15:35 - 07:00
SAI
-
LHR
21h 25m
2 stops
£697Multiple Airlines
Tue, 5 May - Sat, 9 May
Multiple Airlines Logo
09:30 - 14:50
LHR
-
SAI
23h 20m
2 stops
Multiple Airlines Logo
15:35 - 18:45
SAI
-
LHR
33h 10m
2 stops
£698Multiple Airlines
Sat, 9 May - Mon, 18 May
Multiple Airlines Logo
09:30 - 14:50
LHR
-
SAI
23h 20m
2 stops
Multiple Airlines Logo
15:35 - 18:45
SAI
-
LHR
33h 10m
2 stops
£706Multiple Airlines
Tue, 12 May - Mon, 18 May
Multiple Airlines Logo
06:30 - 14:50
LHR
-
SAI
26h 20m
3 stops
Multiple Airlines Logo
16:55 - 22:10
SAI
-
LHR
35h 15m
3 stops
£709Multiple Airlines
Tue, 12 May - Sun, 17 May

Singapore Airlines flights from London Heathrow Airport to Cambodia

Our best Singapore Airlines deals on London Heathrow Airport to Cambodia flight tickets
Singapore Airlines
23 Sept
LHR20:35London Heathrow
31h 05m
1 stop
SAI09:40Siem Reap–Angkor Intl
11 Oct
SAI16:00Siem Reap–Angkor Intl
19h 55m
1 stop
LHR05:55London Heathrow
£816
Singapore Airlines
16 Apr
LHR11:20London Heathrow
16h 20m
1 stop
SAI09:40Siem Reap–Angkor Intl
23 Apr
SAI10:30Siem Reap–Angkor Intl
27h 30m
1 stop
LHR08:00London Heathrow
£1,786
Singapore Airlines
16 Apr
LHR11:20London Heathrow
21h 50m
1 stop
SAI15:10Siem Reap–Angkor Intl
23 Apr
SAI10:30Siem Reap–Angkor Intl
39h 00m
1 stop
LHR19:30London Heathrow
£2,088

Emirates flights from London Heathrow Airport to Cambodia

Our best Emirates deals on London Heathrow Airport to Cambodia flight tickets
Emirates
11 May
LHR09:05London Heathrow
30h 25m
2 stops
SAI21:30Siem Reap–Angkor Intl
19 May
SAI23:50Siem Reap–Angkor Intl
24h 50m
2 stops
LHR18:40London Heathrow
£746
Emirates
11 May
LHR14:25London Heathrow
25h 05m
2 stops
SAI21:30Siem Reap–Angkor Intl
19 May
SAI23:50Siem Reap–Angkor Intl
26h 25m
2 stops
LHR20:15London Heathrow
£747
Emirates
28 Apr
LHR22:15London Heathrow
41h 15m
2 stops
SAI21:30Siem Reap–Angkor Intl
19 May
SAI23:50Siem Reap–Angkor Intl
26h 25m
2 stops
LHR20:15London Heathrow
£760

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Cambodia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 2 April 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Cambodia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Wed 10/6

09:30-18:05

2 stops26h 35m

Siem Reap–Angkor Intl

Wed 17/6

19:05-18:45

2 stops29h 40m

£592

LondonKrong Preah Sihanouk

LHR - KOS

LHRKOS

London Heathrow

Tue 12/5

09:30-13:00

2 stops21h 30m

Krong Preah Sihanouk Sihanoukville

Tue 19/5

12:15-07:00

2 stops24h 45m

£625

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Wed 10/6

21:45-11:10

3 stops31h 25m

Siem Reap–Angkor Intl

Wed 17/6

19:05-18:45

2 stops29h 40m

£642

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 12/5

09:30-14:50

2 stops23h 20m

Siem Reap–Angkor Intl

Sun 17/5

10:00-07:00

2 stops27h 00m

£664

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sun 10/5

09:30-18:05

2 stops26h 35m

Siem Reap–Angkor Intl

Mon 18/5

19:05-18:45

2 stops53h 40m

£674

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sun 17/5

09:30-18:05

2 stops26h 35m

Siem Reap–Angkor Intl

Sun 24/5

11:55-12:45

3 stops30h 50m

£694
Fastest return journey

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 5/5

09:30-14:50

2 stops23h 20m

Siem Reap–Angkor Intl

Sat 9/5

15:35-07:00

2 stops21h 25m

£697

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sat 9/5

09:30-14:50

2 stops23h 20m

Siem Reap–Angkor Intl

Mon 18/5

15:35-18:45

2 stops33h 10m

£698

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 12/5

09:30-14:50

2 stops23h 20m

Siem Reap–Angkor Intl

Mon 18/5

15:35-18:45

2 stops33h 10m

£706

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 12/5

06:30-14:50

3 stops26h 20m

Siem Reap–Angkor Intl

Sun 17/5

16:55-22:10

3 stops35h 15m

£709

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Cambodia from

How to get the cheapest flight ticket from London Heathrow Airport to Cambodia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Cambodia?

In general, November is the cheapest month to fly from London Heathrow Airport to Cambodia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £572. If you aren’t able to travel during the month of November, then book flights to Cambodia from London Heathrow Airport during May instead. Flights to Cambodia in May, while not as cheap as those in November, still average around £577.

How far in advance should I book a flight to Cambodia?

You are more likely to see cheaper flights to Cambodia from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Cambodia for around £709 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Cambodia from London Heathrow Airport for as low as £615 on momondo.

Can stopping save me money on London Heathrow Airport to Cambodia flights?

You could potentially save up to 19% on your flight if you consider stops on a London Heathrow Airport to Cambodia flight.

Cheap London Heathrow Airport to Cambodia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Cambodia

Fastest flight time

18h 15m

Direct flights

None
The fastest flight from London Heathrow Airport to Cambodia takes 18h 15m
There are no direct flights from London Heathrow Airport to Cambodia. There are no popular flight routes from London Heathrow Airport to Cambodia.
Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Cambodia

  • When did momondo last update prices for flights from London Heathrow Airport to Cambodia?

    Prices for flights from London Heathrow Airport to Cambodia refresh daily.

  • How many operators does momondo search for flights from London Heathrow Airport to Cambodia?

  • How old do you have to be to fly from London Heathrow Airport to Cambodia?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to Cambodia.

  • What documentation or ID do you need to fly to Cambodia?

    The required travel and health documents for your Cambodia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Cambodia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from London Heathrow Airport to Cambodia

Compare and see reviews for airlines that fly from London Heathrow Airport to Cambodia with momondo
Airline
Rating
Free Cancellation
Price
Air ChinaPriceFrom £270Free CancellationRating
7.3
145 reviews
Search Air China flights
China SouthernPriceFrom £397Free CancellationRating
7.4
146 reviews
Search China Southern flights
Shenzhen AirlinesPriceFrom £420Free CancellationRating
7.8
25 reviews
Search Shenzhen Airlines flights
Etihad AirwaysPriceFrom £520Free CancellationRating
7.3
1,432 reviews
Search Etihad Airways flights
Austrian AirlinesPriceFrom £545Free CancellationRating
7.6
904 reviews
Search Austrian Airlines flights
China EasternPriceFrom £555Free CancellationRating
7.2
200 reviews
Search China Eastern flights
Malaysia AirlinesPriceFrom £594Free CancellationRating
7.4
303 reviews
Search Malaysia Airlines flights
Singapore AirlinesPriceFrom £600Free CancellationRating
8.2
1,486 reviews
Search Singapore Airlines flights
LufthansaPriceFrom £604Free CancellationRating
6.8
7,882 reviews
Search Lufthansa flights
Vietnam AirlinesPriceFrom £623Free CancellationRating
7.7
252 reviews
Search Vietnam Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Cambodia?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Cambodia . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from London to Cambodia with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for London to Cambodia flights to just show those with flexible booking policies.

How can momondo help me find flights from London to Cambodia?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Cambodia from London.

I’m not ready to book a flight from London to Cambodia right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to Cambodia flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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