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Cheap flights from England to Siem Reap from £292

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 17/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAI
12 Aug — 19 Aug1
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 13 July 2026.

Wed 18/1106:00
LHR
-
SAI
2 stops29h 45m
Multiple Airlines
Wed 2/1209:55
SAI
-
LHR
2 stops18h 45m
Multiple Airlines
Deal found 8/7£574
Sat 19/912:20
LHR
-
SAI
2 stops24h 35m
Multiple Airlines
Mon 28/909:40
SAI
-
LHR
2 stops18h 05m
Multiple Airlines
Deal found 11/7£575
Mon 31/812:10
LHR
-
SAI
2 stops24h 45m
SWISS
Mon 7/909:40
SAI
-
LHR
2 stops28h 15m
SWISS
Deal found 10/7£585
Mon 12/1018:40
LHR
-
SAI
2 stops33h 00m
SWISS
Mon 26/1009:55
SAI
-
LHR
2 stops18h 45m
SWISS
Deal found 9/7£586
Tue 24/1118:40
LHR
-
SAI
2 stops32h 10m
SWISS
Fri 4/1209:55
SAI
-
LHR
2 stops18h 45m
SWISS
Deal found 11/7£587
Tue 17/1109:05
LHR
-
SAI
2 stops26h 40m
Multiple Airlines
Wed 2/1209:55
SAI
-
LHR
2 stops18h 45m
Multiple Airlines
Deal found 8/7£592
Sat 19/909:25
LGW
-
SAI
2 stops27h 30m
SWISS
Mon 28/909:40
SAI
-
LGW
2 stops28h 45m
SWISS
Deal found 11/7£595
Mon 31/813:35
LHR
-
SAI
2 stops23h 20m
Multiple Airlines
Mon 7/909:40
SAI
-
LHR
2 stops28h 15m
Multiple Airlines
Deal found 9/7£605
Tue 1/919:30
LHR
-
SAI
2 stops17h 25m
Multiple Airlines
Tue 8/909:40
SAI
-
LHR
2 stops18h 05m
Multiple Airlines
Deal found 9/7£606
Sun 30/809:05
LGW
-
SAI
2 stops27h 50m
SWISS
Tue 8/909:40
SAI
-
LGW
2 stops28h 45m
SWISS
Deal found 9/7£607
Sun 30/813:50
LHR
-
SAI
2 stops23h 05m
SWISS
Tue 8/909:40
SAI
-
LHR
2 stops28h 15m
SWISS
Deal found 9/7£608
Mon 31/812:35
LGW
-
SAI
2 stops24h 20m
Multiple Airlines
Mon 7/912:55
SAI
-
LGW
2 stops23h 40m
Multiple Airlines
Deal found 10/7£608

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 13 July 2026.

Round-trip from

£574

One-way from

£292

Popular in

December

Cheapest in

July

Average price

£624
SWISS
  • SWISS
  • 18/11-2/12
  • 4 total stops
  • 48h 30m total
  • England to Siem Reap
Search Deals
17/9
  • 17/9
  • 3 total stops
  • 36h 15m total
  • England to Siem Reap
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£91 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£28 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 13 July 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

LGW - SAI

LGWSAI

London Gatwick

Sat 19/9

09:25-18:55

2 stops27h 30m

Siem Reap–Angkor Intl

Mon 28/9

09:40-08:25

2 stops28h 45m

£595

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sun 30/8

06:00-18:55

2 stops30h 55m

Siem Reap–Angkor Intl

Mon 7/9

09:40-07:55

2 stops28h 15m

£610

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Sat 19/9

12:15-18:55

2 stops24h 40m

Siem Reap–Angkor Intl

Mon 28/9

09:40-08:40

2 stops29h 00m

£610

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Tue 1/9

09:25-18:55

2 stops27h 30m

Siem Reap–Angkor Intl

Mon 7/9

09:40-08:25

2 stops28h 45m

£625

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Mon 31/8

13:10-18:55

2 stops23h 45m

Siem Reap–Angkor Intl

Tue 8/9

09:40-08:40

2 stops29h 00m

£648

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Tue 1/9

09:15-18:55

2 stops27h 40m

Siem Reap–Angkor Intl

Tue 8/9

09:40-08:40

2 stops29h 00m

£648

LondonSiem Reap

LTN - SAI

LTNSAI

London Luton

Thu 15/10

15:15-09:00

3 stops35h 45m

Siem Reap–Angkor Intl

Thu 29/10

14:50-14:25

3 stops30h 35m

£671

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

3 stops50h 30m

£698

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sun 22/11

21:00-21:00

2 stops41h 00m

Siem Reap–Angkor Intl

Sat 5/12

22:00-17:30

2 stops50h 30m

£699

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sun 15/11

21:00-21:00

2 stops41h 00m

Siem Reap–Angkor Intl

Tue 1/12

22:00-17:30

3 stops50h 30m

£748

Flights are sorted by cheapest return flights first.

Deals found on 12/7

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, February is the cheapest month in which you can book a flight from England to Region of Siem Reap (average of £187). Flying from England to Region of Siem Reap in August is currently the most expensive (average of £768). 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 13 July 2026.
Read reviews from past customers who have flown with Singapore Airlines,Thai Airways, andVietnam Airlines 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
1,572 reviews
Check prices

Comfort

8.0

Food

7.8

Crew

8.6

Overall

8.2

Entertainment

8.0

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Singapore Airlines
8.2
Very Good
1,572 reviews
Singapore Airlines
8.2
Very Good
1,572 reviews
Check prices

Comfort

8.0

Food

7.8

Crew

8.6

Overall

8.2

Entertainment

8.0

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Thai Airways
7.9
Good
409 reviews
Singapore Airlines
8.2
Very Good
1,572 reviews
Check prices

Comfort

8.0

Food

7.8

Crew

8.6

Overall

8.2

Entertainment

8.0

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Vietnam Airlines
7.7
Good
279 reviews
Singapore Airlines
8.2
Very Good
1,572 reviews
Check prices

Comfort

8.0

Food

7.8

Crew

8.6

Overall

8.2

Entertainment

8.0

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Austrian Airlines
7.6
Good
943 reviews
Singapore Airlines
8.2
Very Good
1,572 reviews
Check prices

Comfort

8.0

Food

7.8

Crew

8.6

Overall

8.2

Entertainment

8.0

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
British Airways
6.7
Okay
8,113 reviews
Singapore Airlines
8.2
Very Good
1,572 reviews
Check prices

Comfort

8.0

Food

7.8

Crew

8.6

Overall

8.2

Entertainment

8.0

Boarding

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered

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, China Eastern, and Emirates 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 Singapore Airlines, with whom users have recently found tickets for as low as £166. However, be on the lookout for offers from Vietnam Airlines and Etihad 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, February is the cheapest month in which you can book a flight from England to Region of Siem Reap (average of £187). Flying from England to Region of Siem Reap in August is currently the most expensive (average of £768). 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 13 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Austrian AirlinesCheapest£540Average£686FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Etihad AirwaysCheapest£548Average£648FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Vietnam AirlinesCheapest£618Average£816FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
Singapore AirlinesCheapest£666Average£937FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
Thai AirwaysCheapest£824Average£959FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights
EmiratesCheapest£854Average£941FlexibilityNo 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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