Cheap flights from England to Siem Reap, Cambodia from £296

LHR — SAI
10 Dec — 17 Dec1
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

Sun 6/1210:30 -
2 stops50h 35m
Sun 13/1221:05 -
2 stops40h 25m
Deal found 6/11£602
Thu 26/1112:30 -
2 stops48h 35m
Thu 10/1221:05 -
2 stops27h 25m
Deal found 7/11£613
Sat 5/1210:30 -
2 stops26h 35m
Sat 19/1221:05 -
2 stops40h 25m
Deal found 8/11£640
Sun 15/1119:20 -
2 stops39h 05m
Tue 24/1120:30 -
2 stops29h 40m
Deal found 10/11£656
Sat 5/1212:30 -
2 stops24h 35m
Sat 19/1221:05 -
2 stops27h 25m
Deal found 8/11£658
Mon 16/1108:40 -
2 stops25h 45m
Tue 24/1121:05 -
3 stops51h 25m
Deal found 10/11£662
Sun 6/1221:00 -
3 stops40h 05m
Sun 13/1221:05 -
2 stops27h 25m
Deal found 6/11£671
Sat 5/1212:30 -
2 stops24h 35m
Sun 27/1221:05 -
2 stops40h 20m
Deal found 10/11£681
Sat 5/1207:10 -
3 stops27h 55m
Sat 19/1217:55 -
2 stops27h 05m
Deal found 8/11£681
Sat 5/1206:25 -
3 stops28h 40m
Sat 19/1220:05 -
3 stops33h 50m
Deal found 6/11£695
Sat 5/1210:30 -
3 stops26h 35m
Sun 27/1222:25 -
2 stops22h 35m
Deal found 10/11£700
Mon 16/1110:30 -
3 stops27h 00m
Tue 24/1121:30 -
2 stops23h 30m
Deal found 10/11£712

Find flight deals from England to Siem Reap

Round-trip from

£602

One-way from

£296

Popular in

December

Cheapest in

July

Average price

£778
China Eastern
  • China Eastern
  • 6/12-13/12
  • 5 total stops
  • 91h 00m total
  • England to Siem Reap
28/1-31/12
  • 28/1-31/12
  • 3 total stops
  • 38h 30m total
  • England to Siem Reap
Highest demand for flights based on searches. 7% potential increase in price (£50 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£22 potential savings vs. average return price).
Average for round-trip flights in November 2026

Cheapflights Fare Finder

 
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

STN London Stansted - SAI Siem Reap–Angkor Intl

STNSAI

London Stansted

Sat 30/1

16:30-14:50

3 stops39h 20m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£335

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Fri 27/11

20:05-08:20

3 stops53h 15m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£347

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Mon 11/1

05:00-14:50

3 stops26h 50m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£353

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Sat 6/2

19:45-14:50

3 stops36h 05m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£353

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Sun 24/1

09:10-11:45

3 stops43h 35m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£356

LondonSiem Reap

STN London Stansted - SAI Siem Reap–Angkor Intl

STNSAI

London Stansted

Thu 26/11

17:00-11:05

3 stops35h 05m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£363

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Sat 30/1

19:45-14:50

3 stops36h 05m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£367

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Sun 15/11

15:05-17:25

3 stops43h 20m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£372

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Fri 27/11

21:10-16:55

2 stops36h 45m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£375

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Sat 5/12

19:45-14:50

3 stops36h 05m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£385

Flights are sorted by cheapest return flights first.

Deals found on 7/11

Showing 1-10 of 60 resultsSorted by cheapest first
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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

Cheapflights Insights

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

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

Currently, June is the cheapest month in which you can book a flight from England to Siem Reap (average of £719). Flying from England to Siem Reap in December is currently the most expensive (average of £1,142). 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?

Airfare is below average for this route at the moment.
England to Siem Reap flights typically cost between £675 and £996 in November.
The cheapest return price found within the last 5 days was £613 on China Eastern (26 Nov–10 Dec).

Related info for your journey

  • 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 Etihad Airways, Emirates, and Vietnam Airlines fly from England to Siem Reap in about 26h 30m. The time it takes to get you to your destination can typically vary by up to 18h. 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 Singapore Airlines, with whom users have recently found tickets for as low as £166. However, be on the lookout for offers from Austrian Airlines and Vietnam Airlines, 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, June is the cheapest month in which you can book a flight from England to Siem Reap (average of £719). Flying from England to Siem Reap in December is currently the most expensive (average of £1,142). 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

Top 5 airlines flying from England to Siem Reap

AirlineCheapestAverageFlexibilityOn-time
Etihad AirwaysCheapest£548Average£754FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Singapore AirlinesCheapest£666Average£895FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Vietnam AirlinesCheapest£744Average£822FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
EmiratesCheapest£855Average£876FlexibilityNo cancel feeOn-time75%
Search Emirates flights
Thai AirwaysCheapest£892Average£1,025FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights

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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.

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