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

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
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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 Region of Siem Reap?

The price you pay for your flight from England to Region of Siem Reap may vary depending on when you book. For the best chance of a lower fare, look to book 53 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, May is the cheapest month in which you can book a flight from England to Region of Siem Reap (average of £526). Flying from England to Region of 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 Region of Siem Reap?

Reviews of airlines servicing Siem Reap

Get insights into the airlines that provide service to Siem Reap. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Siem Reap. Reviews last updated 30 April 2026.
Read reviews from past customers who have flown with Singapore Airlines,Emirates, andThai Airways from England to Siem Reap. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very Good
1,505 reviews
Check prices

Crew

8.6

Overall

8.2

Boarding

8.3

Comfort

8.0

Food

7.8

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Singapore Airlines
8.2
Very Good
1,505 reviews
Singapore Airlines
8.2
Very Good
1,505 reviews
Check prices

Crew

8.6

Overall

8.2

Boarding

8.3

Comfort

8.0

Food

7.8

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Emirates
8.1
Very Good
3,568 reviews
Singapore Airlines
8.2
Very Good
1,505 reviews
Check prices

Crew

8.6

Overall

8.2

Boarding

8.3

Comfort

8.0

Food

7.8

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Thai Airways
7.9
Good
401 reviews
Singapore Airlines
8.2
Very Good
1,505 reviews
Check prices

Crew

8.6

Overall

8.2

Boarding

8.3

Comfort

8.0

Food

7.8

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Vietnam Airlines
7.7
Good
264 reviews
Singapore Airlines
8.2
Very Good
1,505 reviews
Check prices

Crew

8.6

Overall

8.2

Boarding

8.3

Comfort

8.0

Food

7.8

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
British Airways
6.7
Okay
7,937 reviews
Singapore Airlines
8.2
Very Good
1,505 reviews
Check prices

Crew

8.6

Overall

8.2

Boarding

8.3

Comfort

8.0

Food

7.8

Entertainment

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.

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.

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

    Airlines like SWISS, Emirates, and Vietnam Airlines fly from England to Region of Siem Reap in about 16h 15m. The time it takes to get you to your destination can typically vary by up to 25h 30m. England and Region of Siem Reap are separated by 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 Region of 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 Region of Siem Reap for a low price.

  • 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 Region of Siem Reap?

    Currently, May is the cheapest month in which you can book a flight from England to Region of Siem Reap (average of £526). Flying from England to Region of 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?

Deals for England to Siem Reap flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights helps you find that perfect flight to Siem Reap from England by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from England to Siem Reap flexibly with Cheapflights today.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Siem Reap from England today and book when prices fit your budget.

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