Cheap flights from England to Siem Reap, Cambodia from £384

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 17/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAI
30 May — 6 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from England to Siem Reap

Enter your travel dates to find the best prices.

Cheapest flights from England to Siem Reap
Explore the most affordable flight options available from England to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2026.

Wed 6/521:45
LHR
-
SAI
2 stops31h 30m
Etihad Airways
Sat 16/515:10
SAI
-
LHR
2 stops21h 50m
Etihad Airways
Deal found 29/4£564
Sun 10/509:30
LHR
-
SAI
2 stops22h 50m
Etihad Airways
Sat 16/515:10
SAI
-
LHR
2 stops21h 50m
Etihad Airways
Deal found 30/4£596
Fri 12/621:45
LHR
-
SAI
2 stops29h 15m
Etihad Airways
Tue 23/615:10
SAI
-
LHR
2 stops27h 35m
Etihad Airways
Deal found 29/4£605
Sat 2/520:45
MAN
-
SAI
2 stops32h 30m
Etihad Airways
Sat 16/515:10
SAI
-
MAN
2 stops21h 45m
Etihad Airways
Deal found 30/4£621
Fri 12/616:15
LHR
-
SAI
2 stops20h 40m
Multiple Airlines
Sat 27/609:40
SAI
-
LHR
2 stops27h 50m
Multiple Airlines
Deal found 29/4£672
Sat 31/1017:00
LGW
-
SAI
2 stops37h 15m
Multiple Airlines
Sat 12/1222:00
SAI
-
LGW
2 stops39h 30m
Multiple Airlines
Deal found 28/4£694
Tue 10/1121:00
LHR
-
SAI
3 stops41h 00m
China Eastern
Thu 3/1222:00
SAI
-
LHR
3 stops50h 30m
China Eastern
Deal found 25/4£696
Sun 1/1121:00
LHR
-
SAI
2 stops41h 00m
China Eastern
Sat 12/1222:00
SAI
-
LHR
2 stops50h 30m
China Eastern
Deal found 28/4£696
Tue 15/921:20
LHR
-
SAI
3 stops64h 50m
Multiple Airlines
Tue 29/912:55
SAI
-
LHR
2 stops24h 00m
Multiple Airlines
Deal found 28/4£706
Tue 26/509:25
LGW
-
SAI
2 stops27h 40m
SWISS
Wed 10/609:45
SAI
-
LGW
2 stops28h 40m
SWISS
Deal found 25/4£715
Fri 25/906:00
LHR
-
SAI
2 stops30h 55m
Austrian Airlines
Tue 29/912:55
SAI
-
LHR
2 stops25h 25m
Austrian Airlines
Deal found 27/4£716
Sun 14/609:05
LGW
-
SAI
2 stops27h 50m
SWISS
Mon 6/709:40
SAI
-
LGW
2 stops28h 45m
SWISS
Deal found 27/4£716

Find flight deals from England to Siem Reap

Keep the following information in mind while searching for England to Siem Reap flight deals. Data was last updated 30 April 2026.

Round-trip from

£605

One-way from

£384

Popular in

December

Cheapest in

September

Average price

£798
Etihad Airways
  • Etihad Airways
  • 12/6-23/6
  • 4 total stops
  • 56h 50m total
  • England to Siem Reap
17/5
  • 17/5
  • 2 total stops
  • 31h 05m total
  • England to Siem Reap
Highest demand for flights based on searches. 7% potential increase in price (£48 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£23 potential savings vs. average return price).
Average for round-trip flights in April 2026

Cheapflights Fare Finder

 
Customise your flight search to find flights from England to Siem Reap 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, Cheapflights users made 858,174 searches. Data last updated 30 April 2026.
Use the filters below to find and compare flights from England to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Fri 12/6

16:15-18:55

2 stops20h 40m

Siem Reap–Angkor Intl

Sat 27/6

09:40-07:30

2 stops27h 50m

£672

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Tue 26/5

09:25-19:05

2 stops27h 40m

Siem Reap–Angkor Intl

Wed 10/6

09:45-08:25

2 stops28h 40m

£715

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sun 14/6

09:05-18:55

2 stops27h 50m

Siem Reap–Angkor Intl

Mon 6/7

09:40-08:25

2 stops28h 45m

£716

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Tue 16/6

21:45-21:30

2 stops41h 45m

Siem Reap–Angkor Intl

Tue 7/7

23:50-21:30

2 stops27h 40m

£737

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Tue 16/6

21:05-21:30

2 stops42h 25m

Siem Reap–Angkor Intl

Tue 7/7

23:50-18:45

2 stops24h 55m

£749

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Mon 22/6

21:05-21:30

2 stops18h 25m

Siem Reap–Angkor Intl

Mon 29/6

12:55-18:45

2 stops35h 50m

£762

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Mon 15/6

14:25-21:30

2 stops25h 05m

Siem Reap–Angkor Intl

Tue 7/7

23:50-18:40

2 stops24h 50m

£763

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sun 14/6

23:55-21:30

2 stops39h 35m

Siem Reap–Angkor Intl

Sat 4/7

23:50-21:30

2 stops27h 40m

£768

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Mon 15/6

10:05-21:30

2 stops29h 25m

Siem Reap–Angkor Intl

Sat 4/7

23:50-21:30

2 stops27h 40m

£768

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Sun 14/6

21:05-12:15

2 stops33h 10m

Siem Reap–Angkor Intl

Tue 7/7

23:50-18:45

2 stops24h 55m

£769

Flights are sorted by cheapest return flights first.

Deals found on 26/4

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from England to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from England with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from England to Siem Reap

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

To ensure you get the cheapest price possible for a flight from England to Siem Reap, you should look to book at least 53 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, May is the cheapest month in which you can book a flight from England to Siem Reap (average of £526). Flying from England to Siem Reap in July is currently the most expensive (average of £907). 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 much does it cost for a return flight from England to Siem Reap?

Related info for your journey

Find useful and relevant information for your journey from England to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to Siem Reap from England?

    Located just 24.7 mi from the city center, Siem Reap–Angkor Intl (SAI) is the airport most travelers will use when flying to Siem Reap from England.

  • How long is the flight from England to Siem Reap?

    Airlines like SWISS, Emirates, and Vietnam Airlines fly from England to Siem Reap in about 16h 15m. The time it takes to get you to your destination can typically vary by up to 25h 30m. Airlines will cover a distance of 6106 mi. 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 England to Siem Reap one-way?

    The cheapest airline one-way is Vietnam Airlines, with whom users have recently found tickets for as low as £420. However, be on the lookout for offers from Singapore Airlines and Thai Airways, as they are both options that can get you from England to Siem Reap for a low price.

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from England 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 England to Siem Reap?

    Currently, May is the cheapest month in which you can book a flight from England to Siem Reap (average of £526). Flying from England to Siem Reap in July is currently the most expensive (average of £907). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 6 airlines flying from England to Siem Reap

Discover the top 6 airlines that operate flights from England to Siem Reap. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 30 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Austrian AirlinesCheapest£537Average£684FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
LufthansaCheapest£595Average£764FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Vietnam AirlinesCheapest£614Average£804FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
Singapore AirlinesCheapest£661Average£896FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
EmiratesCheapest£848Average£927FlexibilityNo cancel feeOn-time75%
Search Emirates flights
Thai AirwaysCheapest£858Average£939FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from England to Siem Reap?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Siem Reap from England today with Cheapflights!

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

Millions of users choose and trust Cheapflights to book the best flight deals from England to Siem Reap for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Need flexible booking options for your flight to Siem Reap from England? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes! Start tracking prices for England to Siem Reap flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.