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Cheap flights from England to Siem Reap from £351

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 30/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAI
26 Jun — 3 Jul1
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 27 May 2026.

Fri 5/609:30
LHR
-
SAI
2 stops41h 30m
Etihad Airways
Fri 19/619:20
SAI
-
LHR
2 stops41h 40m
Etihad Airways
Deal found 25/5£559
Sat 4/721:45
LHR
-
SAI
2 stops31h 30m
Etihad Airways
Sun 19/719:20
SAI
-
LHR
2 stops29h 25m
Etihad Airways
Deal found 22/5£588
Tue 16/609:30
LHR
-
SAI
2 stops19h 45m
Etihad Airways
Tue 30/619:20
SAI
-
LHR
2 stops47h 25m
Etihad Airways
Deal found 22/5£595
Sun 21/609:30
LHR
-
SAI
2 stops22h 50m
Etihad Airways
Sun 28/619:20
SAI
-
LHR
2 stops29h 25m
Etihad Airways
Deal found 22/5£606
Wed 1/709:30
LHR
-
SAI
2 stops49h 25m
Etihad Airways
Thu 30/715:10
SAI
-
LHR
2 stops21h 50m
Etihad Airways
Deal found 24/5£607
Thu 18/621:45
LHR
-
SAI
2 stops31h 30m
Etihad Airways
Thu 25/615:10
SAI
-
LHR
2 stops21h 50m
Etihad Airways
Deal found 26/5£608
Wed 29/720:50
LHR
-
SAI
2 stops32h 25m
Etihad Airways
Sat 15/815:10
SAI
-
LHR
2 stops21h 50m
Etihad Airways
Deal found 23/5£644
Fri 29/520:45
MAN
-
SAI
2 stops32h 40m
Etihad Airways
Sun 7/619:20
SAI
-
MAN
2 stops29h 15m
Etihad Airways
Deal found 26/5£653
Wed 29/720:45
LHR
-
SAI
2 stops38h 10m
Etihad Airways
Tue 18/815:10
SAI
-
LHR
2 stops53h 55m
Etihad Airways
Deal found 23/5£657
Thu 28/509:30
LHR
-
SAI
2 stops25h 25m
Multiple Airlines
Thu 4/619:20
SAI
-
LHR
2 stops29h 25m
Multiple Airlines
Deal found 26/5£664
Thu 28/509:30
LHR
-
SAI
2 stops25h 25m
Etihad Airways
Thu 18/615:10
SAI
-
LHR
2 stops27h 35m
Etihad Airways
Deal found 23/5£665
Sun 30/809:05
LGW
-
SAI
2 stops27h 50m
SWISS
Mon 28/910:30
SAI
-
LGW
2 stops27h 55m
SWISS
Deal found 23/5£681

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 27 May 2026.

Round-trip from

£588

One-way from

£351

Popular in

December

Cheapest in

September

Average price

£749
Etihad Airways
  • Etihad Airways
  • 4/7-19/7
  • 4 total stops
  • 60h 55m total
  • England to Siem Reap
Search Deals
30/8
  • 30/8
  • 3 total stops
  • 37h 10m total
  • England to Siem Reap
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£49 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 27 May 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

Sat 4/7

21:45-11:15

2 stops31h 30m

Siem Reap–Angkor Intl

Sun 19/7

19:20-18:45

2 stops29h 25m

£588

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 10/11

21:00-21:00

2 stops41h 00m

Siem Reap–Angkor Intl

Sat 5/12

22:00-17:30

2 stops50h 30m

£697

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 10/11

21:00-21:00

2 stops41h 00m

Siem Reap–Angkor Intl

Thu 3/12

22:00-17:30

2 stops50h 30m

£697

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Thu 3/9

11:35-20:10

3 stops26h 35m

Siem Reap–Angkor Intl

Fri 25/9

19:35-06:55

2 stops41h 20m

£699

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Thu 3/9

09:25-18:55

2 stops27h 30m

Siem Reap–Angkor Intl

Fri 25/9

09:40-08:25

2 stops28h 45m

£718

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Wed 28/10

14:05-21:10

2 stops24h 05m

Siem Reap–Angkor Intl

Wed 18/11

13:20-12:05

2 stops29h 45m

£750

BirminghamSiem Reap

BHX - SAI

BHXSAI

Birmingham

Wed 28/10

17:45-09:50

2 stops33h 05m

Siem Reap–Angkor Intl

Wed 18/11

09:55-18:00

2 stops39h 05m

£754

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sun 21/6

09:30-11:15

2 stops19h 45m

Siem Reap–Angkor Intl

Sun 28/6

13:00-06:25

3 stops23h 25m

£764

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Wed 28/10

13:00-15:55

1 stop19h 55m

Siem Reap–Angkor Intl

Wed 18/11

10:45-09:00

1 stop29h 15m

£772

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Mon 29/6

14:55-21:30

2 stops24h 35m

Siem Reap–Angkor Intl

Mon 20/7

12:55-12:55

2 stops30h 00m

£772

Flights are sorted by cheapest return flights first.

Deals found on 25/5

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, May is the cheapest month in which you can book a flight from England to Region of Siem Reap (average of £528). Flying from England to Region of Siem Reap in July is currently the most expensive (average of £911). 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 27 May 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
1,523 reviews
Check prices

Food

7.8

Comfort

8.0

Overall

8.2

Crew

8.6

Boarding

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.
Singapore Airlines
8.2
Very Good
1,523 reviews
Singapore Airlines
8.2
Very Good
1,523 reviews
Check prices

Food

7.8

Comfort

8.0

Overall

8.2

Crew

8.6

Boarding

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.
Emirates
8.1
Very Good
3,569 reviews
Singapore Airlines
8.2
Very Good
1,523 reviews
Check prices

Food

7.8

Comfort

8.0

Overall

8.2

Crew

8.6

Boarding

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.
Thai Airways
7.9
Good
402 reviews
Singapore Airlines
8.2
Very Good
1,523 reviews
Check prices

Food

7.8

Comfort

8.0

Overall

8.2

Crew

8.6

Boarding

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.
Vietnam Airlines
7.7
Good
271 reviews
Singapore Airlines
8.2
Very Good
1,523 reviews
Check prices

Food

7.8

Comfort

8.0

Overall

8.2

Crew

8.6

Boarding

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.
British Airways
6.7
Okay
8,007 reviews
Singapore Airlines
8.2
Very Good
1,523 reviews
Check prices

Food

7.8

Comfort

8.0

Overall

8.2

Crew

8.6

Boarding

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SYD - SIN

creat a group of Senior (75 above) to allow them board the flight ahead of other groups.

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 Etihad Airways, China Eastern, and SWISS fly from England to Region of Siem Reap in about 27h 30m. The time it takes to get you to your destination can typically vary by up to 13h 30m. 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 £422. However, be on the lookout for offers from Emirates and Singapore Airlines, 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 £528). Flying from England to Region of Siem Reap in July is currently the most expensive (average of £911). 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 27 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Austrian AirlinesCheapest£539Average£684FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
LufthansaCheapest£598Average£768FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Vietnam AirlinesCheapest£619Average£815FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
Singapore AirlinesCheapest£664Average£914FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
EmiratesCheapest£852Average£939FlexibilityNo cancel feeOn-time75%
Search Emirates flights
Thai AirwaysCheapest£869Average£956FlexibilityNo 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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