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Cheap flights from London Stansted Airport to Siem Reap from £301

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 21/8. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SAI
10 Aug — 17 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Stansted to Siem Reap

Enter your travel dates to find the best prices.

Cheapest flights from Stansted to Siem Reap
Explore the most affordable flight options available from Stansted to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2026.

Thu 15/1007:20
STN
-
SAI
3 stops29h 35m
Multiple Airlines
Thu 29/1023:50
SAI
-
STN
2 stops27h 35m
Multiple Airlines
Deal found 10/7£691
Thu 12/1120:15
STN
-
SAI
2 stops41h 55m
Emirates
Tue 24/1123:50
SAI
-
STN
2 stops19h 15m
Emirates
Deal found 9/7£742
Tue 1/1220:15
STN
-
SAI
2 stops41h 55m
Emirates
Wed 16/1213:20
SAI
-
STN
2 stops29h 45m
Emirates
Deal found 8/7£747
Thu 3/1220:15
STN
-
SAI
2 stops41h 55m
Emirates
Tue 15/1223:50
SAI
-
STN
2 stops25h 05m
Emirates
Deal found 7/7£763
Thu 3/1220:15
STN
-
SAI
2 stops41h 55m
Emirates
Mon 14/1213:20
SAI
-
STN
2 stops35h 35m
Emirates
Deal found 7/7£764
Sat 19/921:05
STN
-
SAI
2 stops33h 10m
Emirates
Mon 28/912:55
SAI
-
STN
2 stops35h 50m
Emirates
Deal found 11/7£768
Mon 12/1007:30
STN
-
SAI
3 stops32h 00m
Multiple Airlines
Mon 26/1022:25
SAI
-
STN
3 stops29h 30m
Multiple Airlines
Deal found 9/7£791
Thu 3/1220:15
STN
-
SAI
2 stops41h 55m
Emirates
Sat 12/1223:50
SAI
-
STN
2 stops25h 05m
Emirates
Deal found 7/7£791
Mon 31/821:05
STN
-
SAI
2 stops18h 25m
Emirates
Mon 7/912:55
SAI
-
STN
2 stops30h 00m
Emirates
Deal found 9/7£792
Thu 12/1120:15
STN
-
SAI
2 stops33h 25m
Emirates
Thu 19/1123:50
SAI
-
STN
2 stops19h 15m
Emirates
Deal found 7/7£800

Find flight deals from Stansted to Siem Reap

Keep the following information in mind while searching for Stansted to Siem Reap flight deals. Data was last updated 11 July 2026.

Round-trip from

£691

One-way from

£301

Popular in

December

Cheapest in

July

Average price

£624
15/10-29/10
  • 15/10-29/10
  • 5 total stops
  • 57h 10m total
  • London to Siem Reap
Search Deals
21/8
  • 21/8
  • 3 total stops
  • 44h 00m total
  • London 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 (£29 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 Stansted 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 11 July 2026.
Use the filters below to find and compare flights from London Stansted Airport to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Thu 3/12

20:15-21:10

2 stops41h 55m

Siem Reap–Angkor Intl

Tue 15/12

23:50-17:55

2 stops25h 05m

£763

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Mon 31/8

21:05-21:30

2 stops18h 25m

Siem Reap–Angkor Intl

Mon 7/9

12:55-18:45

2 stops35h 50m

£795

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Thu 12/11

20:15-12:40

2 stops33h 25m

Siem Reap–Angkor Intl

Thu 19/11

23:50-12:05

2 stops19h 15m

£800

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Thu 19/11

20:15-21:10

2 stops41h 55m

Siem Reap–Angkor Intl

Thu 3/12

23:50-12:05

2 stops43h 15m

£826

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Fri 4/12

14:05-21:10

2 stops24h 05m

Siem Reap–Angkor Intl

Sat 12/12

23:50-17:55

2 stops25h 05m

£845

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Sun 23/8

07:25-09:00

2 stops19h 35m

Siem Reap–Angkor Intl

Mon 31/8

09:40-09:50

3 stops30h 10m

£949
Fastest return journey

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Fri 4/9

21:05-21:30

2 stops18h 25m

Siem Reap–Angkor Intl

Sat 20/2

23:50-12:05

2 stops19h 15m

£1,034

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Fri 1/1

14:05-21:10

2 stops24h 05m

Siem Reap–Angkor Intl

Fri 22/1

13:20-12:05

2 stops29h 45m

£1,090

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Thu 12/11

17:20-20:30

2 stops20h 10m

Siem Reap–Angkor Intl

Thu 19/11

19:25-09:55

2 stops21h 30m

£1,192

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Mon 17/8

21:05-21:30

2 stops18h 25m

Siem Reap–Angkor Intl

Sun 23/8

12:55-12:55

2 stops30h 00m

£1,282

Flights are sorted by cheapest return flights first.

Deals found on 10/7

Showing 1-10 of 17 resultsSorted by cheapest first
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Best time to book a flight from Stansted to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from Stansted 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 London Stansted Airport to Siem Reap
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Stansted 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 London Stansted Airport to Region of Siem Reap?

    Emirates can get you from London Stansted Airport to Region of Siem Reap in just under 41h 55m. Your travel time can differ by up to . There are 6068 mi between London Stansted Airport and Region of Siem Reap.

  • Can I find deals for flights from Stansted to Siem Reap that include hotel bookings?

    Yes. In addition to deals on Stansted to Siem Reap flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Stansted to Siem Reap?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Stansted to Siem Reap.

  • Can I find deals for business class flights from Stansted to Siem Reap?

    Yes. Cheapflights offers flight deals from Stansted 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.

See more FAQs

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How does Cheapflights help users find flights from Stansted to Siem Reap?

Cheapflights makes it easy to find Stansted to Siem Reap flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Siem Reap from Stansted.

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

Yes, we can. To see specific flights from Stansted to Siem Reap with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Not ready to book yet? You can track prices for flights from Stansted to Siem Reap on Cheapflights with our Price Alert feature and get notified when better prices are available.

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