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Cheap flights from England to Siem Reap from £253

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAI
28 Mar — 4 Apr1
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 26 February 2026.

Mon 1/618:40
LHR
-
SAI
2 stops33h 00m
SWISS
Mon 15/610:30
SAI
-
LHR
2 stops27h 25m
SWISS
Deal found 23/2£551
Mon 1/609:25
LGW
-
SAI
2 stops27h 20m
SWISS
Mon 15/610:30
SAI
-
LGW
2 stops27h 50m
SWISS
Deal found 23/2£551
Thu 19/1110:30
LGW
-
SAI
2 stops51h 30m
China Eastern
Thu 10/1222:00
SAI
-
LGW
2 stops39h 30m
China Eastern
Deal found 24/2£563
Tue 28/408:50
BHX
-
SAI
2 stops27h 55m
SWISS
Tue 23/609:40
SAI
-
BHX
2 stops28h 25m
SWISS
Deal found 25/2£564
Tue 28/417:55
BHX
-
SAI
2 stops18h 50m
Multiple Airlines
Tue 23/609:40
SAI
-
BHX
2 stops28h 25m
Multiple Airlines
Deal found 25/2£573
Mon 16/1118:40
LHR
-
SAI
2 stops32h 10m
SWISS
Mon 7/1209:55
SAI
-
LHR
2 stops18h 45m
SWISS
Deal found 24/2£584
Mon 6/418:05
LGW
-
SAI
3 stops44h 05m
China Eastern
Mon 4/521:10
SAI
-
LGW
3 stops39h 30m
China Eastern
Deal found 22/2£612
Fri 13/1110:30
LGW
-
SAI
3 stops27h 30m
China Eastern
Thu 10/1222:00
SAI
-
LGW
2 stops39h 30m
China Eastern
Deal found 24/2£614
Mon 1/606:00
LHR
-
SAI
2 stops30h 45m
Multiple Airlines
Mon 15/621:10
SAI
-
LHR
3 stops51h 30m
Multiple Airlines
Deal found 23/2£619
Mon 6/411:35
LGW
-
SAI
2 stops39h 10m
Multiple Airlines
Mon 4/521:10
SAI
-
LGW
2 stops39h 30m
Multiple Airlines
Deal found 22/2£619
Tue 17/1119:25
LHR
-
SAI
2 stops16h 20m
Multiple Airlines
Tue 8/1209:55
SAI
-
LHR
2 stops18h 45m
Multiple Airlines
Deal found 24/2£622
Mon 1/608:00
LCY
-
SAI
2 stops28h 45m
SWISS
Mon 15/610:30
SAI
-
LCY
2 stops38h 10m
SWISS
Deal found 23/2£628

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 26 February 2026.

Round-trip from

£551

One-way from

£253

Popular in

December

Cheapest in

September

Average price

£812
SWISS
  • SWISS
  • 1/6-15/6
  • 4 total stops
  • 60h 25m total
  • England to Siem Reap
Search Deals
9/3
  • 9/3
  • 3 total stops
  • 55h 10m total
  • England to Siem Reap
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£46 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 February 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 26 February 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

BirminghamSiem Reap

BHX - SAI

BHXSAI

Birmingham

Tue 28/4

17:55-18:45

2 stops18h 50m

Siem Reap–Angkor Intl

Tue 23/6

09:40-08:05

2 stops28h 25m

£573

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sun 5/4

20:50-10:50

2 stops32h 00m

Siem Reap–Angkor Intl

Sun 3/5

13:00-07:00

2 stops48h 00m

£735

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sun 15/3

17:00-18:05

2 stops42h 05m

Siem Reap–Angkor Intl

Sun 29/3

19:30-18:30

1 stop29h 00m

£803

BirminghamSiem Reap

BHX - SAI

BHXSAI

Birmingham

Tue 31/3

07:35-17:10

2 stops27h 35m

Siem Reap–Angkor Intl

Tue 30/6

18:05-10:20

2 stops22h 15m

£878

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sun 5/4

10:15-09:40

1 stop17h 25m

Siem Reap–Angkor Intl

Sun 3/5

10:30-06:55

1 stop26h 25m

£936

ManchesterSiem Reap

MAN - SAI

MANSAI

Manchester

Sat 25/4

10:35-09:40

1 stop17h 05m

Siem Reap–Angkor Intl

Fri 8/5

10:30-09:15

1 stop28h 45m

£939

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sun 5/4

09:25-09:40

1 stop18h 15m

Siem Reap–Angkor Intl

Sun 3/5

10:30-05:55

1 stop25h 25m

£968

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Sun 15/3

14:05-09:15

2 stops36h 10m

Siem Reap–Angkor Intl

Sun 29/3

19:30-12:55

2 stops23h 25m

£980

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Mon 10/8

10:15-09:40

1 stop17h 25m

Siem Reap–Angkor Intl

Mon 24/8

10:30-06:55

1 stop26h 25m

£989

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Fri 10/4

14:55-21:30

2 stops24h 35m

Siem Reap–Angkor Intl

Fri 17/4

15:35-15:25

3 stops29h 50m

£994

Flights are sorted by cheapest return flights first.

Deals found on 24/2

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

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

Currently, March is the cheapest month in which you can book a flight from England to Region of Siem Reap (average of £577). Flying from England to Region of Siem Reap in August is currently the most expensive (average of £888). 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.

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 26 February 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
1,463 reviews
Check prices

Overall

8.2

Crew

8.6

Entertainment

8.0

Comfort

8.0

Food

7.8

Boarding

8.3

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
1,463 reviews
Singapore Airlines
8.2
Very Good
1,463 reviews
Check prices

Overall

8.2

Crew

8.6

Entertainment

8.0

Comfort

8.0

Food

7.8

Boarding

8.3

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
3,534 reviews
Singapore Airlines
8.2
Very Good
1,463 reviews
Check prices

Overall

8.2

Crew

8.6

Entertainment

8.0

Comfort

8.0

Food

7.8

Boarding

8.3

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
7.8
Good
386 reviews
Singapore Airlines
8.2
Very Good
1,463 reviews
Check prices

Overall

8.2

Crew

8.6

Entertainment

8.0

Comfort

8.0

Food

7.8

Boarding

8.3

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
235 reviews
Singapore Airlines
8.2
Very Good
1,463 reviews
Check prices

Overall

8.2

Crew

8.6

Entertainment

8.0

Comfort

8.0

Food

7.8

Boarding

8.3

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
7,768 reviews
Singapore Airlines
8.2
Very Good
1,463 reviews
Check prices

Overall

8.2

Crew

8.6

Entertainment

8.0

Comfort

8.0

Food

7.8

Boarding

8.3

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 China Eastern, Emirates, and Singapore Airlines fly from England to Region of Siem Reap in about 17h 25m. The time it takes to get you to your destination can typically vary by up to 47h 35m. England and Region of Siem Reap are separated by a distance of 6102 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 £419. 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, March is the cheapest month in which you can book a flight from England to Region of Siem Reap (average of £577). Flying from England to Region of Siem Reap in August is currently the most expensive (average of £888). 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

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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 26 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Austrian AirlinesCheapest£535Average£685FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
LufthansaCheapest£594Average£763FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Vietnam AirlinesCheapest£612Average£744FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
Singapore AirlinesCheapest£660Average£883FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Thai AirwaysCheapest£853Average£907FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights
EmiratesCheapest£890Average£961FlexibilityNo cancel feeOn-time75%
Search Emirates 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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