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Cheap flights from London Stansted Airport to Siem Reap from £437

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Stansted Airport to Siem Reap departing on 26/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from London Stansted Airport to Siem Reap

Cheap return flights

Enter your travel dates to find the best prices.
Emirates Logo
14:05 - 21:10
STN
-
SAI
24h 05m
2 stops
Emirates Logo
13:20 - 12:05
SAI
-
STN
29h 45m
2 stops
£756Emirates
Mon, 16 Nov - Mon, 30 Nov
Emirates Logo
20:15 - 21:10
STN
-
SAI
41h 55m
2 stops
Emirates Logo
13:20 - 12:05
SAI
-
STN
29h 45m
2 stops
£762Emirates
Sun, 8 Nov - Mon, 30 Nov
Emirates Logo
20:15 - 21:10
STN
-
SAI
41h 55m
2 stops
Emirates Logo
23:50 - 17:55
SAI
-
STN
25h 05m
2 stops
£764Emirates
Sun, 15 Nov - Tue, 1 Dec
Emirates Logo
20:15 - 21:10
STN
-
SAI
41h 55m
2 stops
Emirates Logo
13:20 - 12:05
SAI
-
STN
29h 45m
2 stops
£765Emirates
Sun, 15 Nov - Mon, 30 Nov
Emirates Logo
14:05 - 21:10
STN
-
SAI
24h 05m
2 stops
Emirates Logo
23:50 - 17:55
SAI
-
STN
25h 05m
2 stops
£766Emirates
Mon, 9 Nov - Thu, 26 Nov
Emirates Logo
14:05 - 21:10
STN
-
SAI
24h 05m
2 stops
Emirates Logo
23:50 - 17:55
SAI
-
STN
25h 05m
2 stops
£770Emirates
Mon, 9 Nov - Tue, 1 Dec
Emirates Logo
21:05 - 21:30
STN
-
SAI
42h 25m
2 stops
Emirates Logo
23:50 - 18:45
SAI
-
STN
24h 55m
2 stops
£771Emirates
Tue, 9 Jun - Tue, 7 Jul
Emirates Logo
21:05 - 21:30
STN
-
SAI
42h 25m
2 stops
Emirates Logo
12:55 - 12:55
SAI
-
STN
30h 00m
2 stops
£779Emirates
Tue, 1 Sep - Wed, 30 Sep
Emirates Logo
14:05 - 21:10
STN
-
SAI
24h 05m
2 stops
Emirates Logo
13:20 - 12:05
SAI
-
STN
29h 45m
2 stops
£782Emirates
Fri, 6 Nov - Mon, 30 Nov
Emirates Logo
14:05 - 21:10
STN
-
SAI
24h 05m
2 stops
Emirates Logo
23:50 - 17:55
SAI
-
STN
25h 05m
2 stops
£783Emirates
Fri, 13 Nov - Tue, 1 Dec

Emirates flights from London Stansted Airport to Siem Reap

Our best Emirates deals on London Stansted Airport to Siem Reap flight tickets
Emirates
16 Nov
STN14:05London Stansted
24h 05m
2 stops
SAI21:10Siem Reap–Angkor Intl
30 Nov
SAI13:20Siem Reap–Angkor Intl
29h 45m
2 stops
STN12:05London Stansted
£756
Emirates
8 Nov
STN20:15London Stansted
41h 55m
2 stops
SAI21:10Siem Reap–Angkor Intl
30 Nov
SAI13:20Siem Reap–Angkor Intl
29h 45m
2 stops
STN12:05London Stansted
£762
Emirates
15 Nov
STN20:15London Stansted
41h 55m
2 stops
SAI21:10Siem Reap–Angkor Intl
1 Dec
SAI23:50Siem Reap–Angkor Intl
25h 05m
2 stops
STN17:55London Stansted
£764

Turkish Airlines flights from London Stansted Airport to Siem Reap

Our best Turkish Airlines deals on London Stansted Airport to Siem Reap flight tickets
Turkish Airlines
28 May
STN17:35London Stansted
19h 10m
2 stops
SAI18:45Siem Reap–Angkor Intl
18 Jun
SAI19:35Siem Reap–Angkor Intl
20h 20m
2 stops
STN09:55London Stansted
£996
Turkish Airlines
28 May
STN17:35London Stansted
19h 10m
2 stops
SAI18:45Siem Reap–Angkor Intl
18 Jun
SAI19:35Siem Reap–Angkor Intl
20h 20m
2 stops
STN09:55London Stansted
£997

momondo Fare Finder

 
Customise your flight search to find flights from London Stansted Airport 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, momondo users made 279,928 searches. Data last updated 20 May 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

Mon 16/11

14:05-21:10

2 stops24h 05m

Siem Reap–Angkor Intl

Mon 30/11

13:20-12:05

2 stops29h 45m

£756

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Sun 8/11

20:15-21:10

2 stops41h 55m

Siem Reap–Angkor Intl

Mon 30/11

13:20-12:05

2 stops29h 45m

£762

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Sun 15/11

20:15-21:10

2 stops41h 55m

Siem Reap–Angkor Intl

Tue 1/12

23:50-17:55

2 stops25h 05m

£764

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Sun 15/11

20:15-21:10

2 stops41h 55m

Siem Reap–Angkor Intl

Mon 30/11

13:20-12:05

2 stops29h 45m

£765
Fastest return journey

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Mon 9/11

14:05-21:10

2 stops24h 05m

Siem Reap–Angkor Intl

Thu 26/11

23:50-17:55

2 stops25h 05m

£766

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Mon 9/11

14:05-21:10

2 stops24h 05m

Siem Reap–Angkor Intl

Tue 1/12

23:50-17:55

2 stops25h 05m

£770

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Tue 9/6

21:05-21:30

2 stops42h 25m

Siem Reap–Angkor Intl

Tue 7/7

23:50-18:45

2 stops24h 55m

£771

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Tue 1/9

21:05-21:30

2 stops42h 25m

Siem Reap–Angkor Intl

Wed 30/9

12:55-12:55

2 stops30h 00m

£779

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Fri 6/11

14:05-21:10

2 stops24h 05m

Siem Reap–Angkor Intl

Mon 30/11

13:20-12:05

2 stops29h 45m

£782

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Fri 13/11

14:05-21:10

2 stops24h 05m

Siem Reap–Angkor Intl

Tue 1/12

23:50-17:55

2 stops25h 05m

£783

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

When to book flights from London Stansted Airport to Siem Reap

Are you open to changing your travel dates? Check out the ideal times to fly from London Stansted Airport to Siem Reap according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Stansted Airport to Siem Reap (STN to SAI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Stansted Airport to Siem Reap

Fastest flight time

18h 25m

Direct flights

None
The fastest flight from London Stansted Airport to Siem Reap takes 18h 25m
There are no direct flights from London Stansted Airport to Siem Reap. There are no popular flight routes from London Stansted Airport to Siem Reap.
Search flight deals

Frequently asked questions about flying from London Stansted Airport to Siem Reap

  • How far is London Stansted to Siem Reap–Angkor Intl by plane?

    A flight from London Stansted to Siem Reap–Angkor Intl will travel around 6054.4 mi. Flights usually cover this in 18h 25m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from London Stansted Airport to Siem Reap–Angkor Intl Airport?

    Prices for flights from London Stansted Airport to Siem Reap–Angkor Intl Airport were last updated today.

  • How old do you have to be to fly from London Stansted Airport to Siem Reap–Angkor Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Stansted Airport to Siem Reap–Angkor Intl Airport.

  • What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?

    The travel and health documents you'll need for your trip to Siem Reap–Angkor Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Siem Reap–Angkor Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from London Stansted Airport to Siem Reap

  • How do I get Price Alerts for flights from London Stansted Airport to Siem Reap?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to London Stansted Airport from Siem Reap. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from London Stansted Airport to Siem Reap with momondo?

    By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

Why should I use momondo to find a flight deal from London to Siem Reap?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Siem Reap for you.

Can I find flights from London to Siem Reap with flexible booking policies on momondo?

Yes. All flights to Siem Reap from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to Siem Reap?

Once you have performed a search for London to Siem Reap flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from London to Siem Reap right now. Can momondo alert me if prices change?

If you are not ready to book a flight from London to Siem Reap now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Siem Reap and let you know when they change.

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Cabin classes currently available on flights to Siem Reap

List of cabin classes available on flights landing in Siem Reap. Availability may vary depending on flight origin and airline.
First Class to Siem Reap
Business Class to Siem Reap