What is the cheapest airline that flies from United Kingdom to Siem Reap–Angkor Intl?

Etihad Airways, China Eastern, and SWISS are the most popular carriers operating from United Kingdom to Siem Reap–Angkor Intl

Which airlines fly to Siem Reap?

Singapore Airlines, Vietnam Airlines and Emirates are the top three most popular airlines that fly to Siem Reap from United Kingdom according to our data. Singapore Airlines is the first choice among our users, with 56% of people opting to fly with this airline when travelling to Siem Reap. Keep in mind that there are 6 different airlines that fly to Siem Reap on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Siem Reap?

If you’re flying from a popular airport in United Kingdom, such as Manchester or London, and flying into Siem Reap, then you can expect flight times to average 16h 45m and 18h 37m, respectively.

When did momondo last update prices for flights from United Kingdom to Siem Reap–Angkor Intl Airport?

Prices for flights from United Kingdom to Siem Reap–Angkor Intl Airport refresh daily.

How many operators does momondo search for flights from United Kingdom to Siem Reap–Angkor Intl Airport?

There are 6 operators available for flights from United Kingdom to Siem Reap–Angkor Intl Airport as of May 2026.

How old do you have to be to fly from United Kingdom to Siem Reap–Angkor Intl Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United Kingdom to Siem Reap–Angkor Intl Airport.

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

The necessary travel and health documents for your Siem Reap–Angkor Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£390 Cheap Flights from the United Kingdom to Siem Reap in 2026

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Find the cheapest flights from the United Kingdom to Siem Reap

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14:45 - 11:15

LHR

SAI

38h 30m

2 stops

15:10 - 18:45

SAI

LHR

33h 35m

2 stops

£582Etihad Airways

Wed, 10 Jun - Fri, 26 Jun

21:45 - 11:15

LHR

SAI

31h 30m

2 stops

19:20 - 18:45

SAI

LHR

29h 25m

2 stops

£582Etihad Airways

Sat, 6 Jun - Tue, 16 Jun

10:30 - 21:00

LGW

SAI

27h 30m

3 stops

22:00 - 06:30

SAI

LGW

39h 30m

3 stops

£583China Eastern

Wed, 4 Nov - Sat, 28 Nov

10:30 - 21:00

LGW

SAI

51h 30m

2 stops

22:00 - 06:30

SAI

LGW

39h 30m

3 stops

£679China Eastern

Thu, 5 Nov - Thu, 19 Nov

17:00 - 19:05

LGW

SAI

43h 05m

2 stops

22:00 - 06:30

SAI

LGW

39h 30m

2 stops

£699Multiple Airlines

Wed, 4 Nov - Sat, 28 Nov

11:20 - 09:15

LGW

SAI

14h 55m

1 stop

20:45 - 13:45

SAI

LGW

24h 00m

1 stop

£713Multiple Airlines

Mon, 2 Nov - Mon, 16 Nov

14:05 - 21:10

STN

SAI

24h 05m

2 stops

23:50 - 17:55

SAI

STN

25h 05m

2 stops

£733Emirates

Mon, 2 Nov - Tue, 17 Nov

14:55 - 21:30

STN

SAI

24h 35m

2 stops

23:50 - 12:55

SAI

STN

19h 05m

2 stops

£752Emirates

Wed, 10 Jun - Thu, 25 Jun

10:05 - 09:50

MAN

SAI

16h 45m

1 stop

10:45 - 08:35

SAI

MAN

28h 50m

1 stop

£777Singapore Airlines

Mon, 26 Oct - Sun, 8 Nov

10:35 - 15:10

MAN

SAI

46h 35m

1 stop

10:30 - 09:15

SAI

MAN

28h 45m

1 stop

£807Singapore Airlines

Mon, 5 Oct - Sun, 18 Oct

Etihad Airways flights from United Kingdom to Siem Reap

Our best Etihad Airways deals on United Kingdom to Siem Reap flight tickets

Etihad Airways

10 Jun

LHR14:45London Heathrow

38h 30m

2 stops

SAI11:15Siem Reap–Angkor Intl

26 Jun

SAI15:10Siem Reap–Angkor Intl

33h 35m

2 stops

LHR18:45London Heathrow

£582

Etihad Airways

6 Jun

LHR21:45London Heathrow

31h 30m

2 stops

SAI11:15Siem Reap–Angkor Intl

16 Jun

SAI19:20Siem Reap–Angkor Intl

29h 25m

2 stops

LHR18:45London Heathrow

£582

Etihad Airways

10 Jun

LHR20:45London Heathrow

32h 30m

2 stops

SAI11:15Siem Reap–Angkor Intl

26 Jun

SAI15:10Siem Reap–Angkor Intl

33h 35m

2 stops

LHR18:45London Heathrow

£583

SWISS flights from United Kingdom to Siem Reap

Our best SWISS deals on United Kingdom to Siem Reap flight tickets

SWISS

21 Jun

LHR08:45London Heathrow

28h 10m

2 stops

SAI18:55Siem Reap–Angkor Intl

29 Jun

SAI09:40Siem Reap–Angkor Intl

28h 15m

2 stops

LHR07:55London Heathrow

£675

SWISS

21 Jun

LGW09:05London Gatwick

27h 50m

2 stops

SAI18:55Siem Reap–Angkor Intl

29 Jun

SAI09:40Siem Reap–Angkor Intl

28h 45m

2 stops

LGW08:25London Gatwick

£714

SWISS

14 Jun

LGW09:05London Gatwick

27h 50m

2 stops

SAI18:55Siem Reap–Angkor Intl

30 Jun

SAI09:40Siem Reap–Angkor Intl

28h 45m

2 stops

LGW08:25London Gatwick

£722

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Wed 10/6

14:45-11:15

2 stops38h 30m

Siem Reap–Angkor Intl

Fri 26/6

15:10-18:45

2 stops33h 35m

£582

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sat 6/6

21:45-11:15

2 stops31h 30m

Siem Reap–Angkor Intl

Tue 16/6

19:20-18:45

2 stops29h 25m

£582

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Wed 4/11

10:30-21:00

3 stops27h 30m

Siem Reap–Angkor Intl

Sat 28/11

22:00-06:30

3 stops39h 30m

£583

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Thu 5/11

10:30-21:00

2 stops51h 30m

Siem Reap–Angkor Intl

Thu 19/11

22:00-06:30

3 stops39h 30m

£679

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Wed 4/11

17:00-19:05

2 stops43h 05m

Siem Reap–Angkor Intl

Sat 28/11

22:00-06:30

2 stops39h 30m

£699

Fastest return journey

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Mon 2/11

11:20-09:15

1 stop14h 55m

Siem Reap–Angkor Intl

Mon 16/11

20:45-13:45

1 stop24h 00m

£713

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Mon 2/11

14:05-21:10

2 stops24h 05m

Siem Reap–Angkor Intl

Tue 17/11

23:50-17:55

2 stops25h 05m

£733

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Wed 10/6

14:55-21:30

2 stops24h 35m

Siem Reap–Angkor Intl

Thu 25/6

23:50-12:55

2 stops19h 05m

£752

ManchesterSiem Reap

MAN - SAI

MANSAI

Manchester

Mon 26/10

10:05-09:50

1 stop16h 45m

Siem Reap–Angkor Intl

Sun 8/11

10:45-08:35

1 stop28h 50m

£777

ManchesterSiem Reap

MAN - SAI

MANSAI

Manchester

Mon 5/10

10:35-15:10

1 stop46h 35m

Siem Reap–Angkor Intl

Sun 18/10

10:30-09:15

1 stop28h 45m

£807

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from United Kingdom to Siem Reap

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

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Other information

What is the cheapest month to fly to Siem Reap?

The month of May is, on average, the cheapest month to fly to Siem Reap from United Kingdom, with most prices found around £527. If you don’t want to visit Siem Reap in May, then you should wait until March to fly from United Kingdom, when ticket prices are also cheap, with an average price of £537.

Can stopping save me money on United Kingdom to Siem Reap flights?

You could potentially save up to 13% on your flight if you consider stops on a United Kingdom to Siem Reap flight.

Cheap United Kingdom to Siem Reap flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United Kingdom to Siem Reap

Fastest flight time	17h 05m
Direct flights	None

The fastest flight from United Kingdom to Siem Reap takes 17h 05m

There are no direct flights from United Kingdom to Siem Reap. There are no popular flight routes from United Kingdom to Siem Reap.

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Frequently asked questions about flying from the United Kingdom to Siem Reap

When did momondo last update prices for flights from United Kingdom to Siem Reap–Angkor Intl Airport?
Prices for flights from United Kingdom to Siem Reap–Angkor Intl Airport refresh daily.
How many operators does momondo search for flights from United Kingdom to Siem Reap–Angkor Intl Airport?
There are 6 operators available for flights from United Kingdom to Siem Reap–Angkor Intl Airport as of May 2026.
How old do you have to be to fly from United Kingdom to Siem Reap–Angkor Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United Kingdom to Siem Reap–Angkor Intl Airport.
What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?
The necessary travel and health documents for your Siem Reap–Angkor Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from United Kingdom to Siem Reap

Compare and see reviews for airlines that fly from United Kingdom to Siem Reap with momondo

Airline	Rating	Free Cancellation	Price
Austrian Airlines	PriceFrom £537	Free Cancellation	Rating 7.6 914 reviews	Search Austrian Airlines flights
Lufthansa	PriceFrom £596	Free Cancellation	Rating 6.8 8,003 reviews	Search Lufthansa flights
Vietnam Airlines	PriceFrom £617	Free Cancellation	Rating 7.7 268 reviews	Search Vietnam Airlines flights
Singapore Airlines	PriceFrom £662	Free Cancellation	Rating 8.2 1,515 reviews	Search Singapore Airlines flights
Emirates	PriceFrom £849	Free Cancellation	Rating 8.1 3,572 reviews	Search Emirates flights
Thai Airways	PriceFrom £859	Free Cancellation	Rating 7.9 401 reviews	Search Thai Airways flights

Why use momondo?

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

It is quick and easy to find United Kingdom to Siem Reap flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Siem Reap that suits you.

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

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

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

momondo helps you find the best flight between United Kingdom and Siem Reap by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are not ready to book a flight from United Kingdom 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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Cheap flights from the United Kingdom to Siem Reap from £380

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Siem Reap departing on 20/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Recent return flight deals from the United Kingdom to Siem Reap

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Etihad Airways flights from United Kingdom to Siem Reap

Our best Etihad Airways deals on United Kingdom to Siem Reap flight tickets

SWISS flights from United Kingdom to Siem Reap

Our best SWISS deals on United Kingdom to Siem Reap flight tickets

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How to get the cheapest flight ticket from United Kingdom to Siem Reap

What is the cheapest month to fly to Siem Reap?

Can stopping save me money on United Kingdom to Siem Reap flights?

What is the cheapest airline that flies from United Kingdom to Siem Reap–Angkor Intl?

Which airlines fly to Siem Reap?

How long does it take to fly to Siem Reap?

Cheap United Kingdom to Siem Reap flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United Kingdom to Siem Reap

Fastest flight time

Direct flights

Frequently asked questions about flying from the United Kingdom to Siem Reap

Best airlines flying from United Kingdom to Siem Reap

Compare and see reviews for airlines that fly from United Kingdom to Siem Reap with momondo

Why use momondo?

An easier way to manage your Siem Reap trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Cambodia

Fly your favourite airline to Siem Reap

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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.

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