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

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

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

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 Siem Reap–Angkor Intl Airport to United Kingdom.

What documentation or ID do you need to fly to United Kingdom?

The travel and health documents required for your trip to United Kingdom can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United Kingdom. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£246 Cheap Flights from Siem Reap to the United Kingdom in 2026

Find the cheapest flights from Siem Reap to the United Kingdom

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

17:55 - 07:15SAI Siem Reap–Angkor Intl-LHR London Heathrow

20h 20m1 stop Hanoi Noibai

17:40 - 21:10LHR London Heathrow-SAI Siem Reap–Angkor Intl

20h 30m2 stops Beijing Capital Bangkok Suvarnabhumi

£775Multiple Airlines

Sun, 20 Dec - Fri, 8 Jan

09:55 - 14:45SAI Siem Reap–Angkor Intl-LHR London Heathrow

35h 50m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl

07:05 - 16:05LHR London Heathrow-SAI Siem Reap–Angkor Intl

26h 00m2 stops Oslo Gardermoen Phuket City

£804Multiple Airlines

Sun, 20 Dec - Fri, 8 Jan

17:55 - 07:15SAI Siem Reap–Angkor Intl-LHR London Heathrow

20h 20m1 stop Hanoi Noibai

11:00 - 19:40LHR London Heathrow-SAI Siem Reap–Angkor Intl

25h 40m1 stop Hanoi Noibai

£899Vietnam Airlines

Sun, 20 Dec - Fri, 8 Jan

13:20 - 11:40SAI Siem Reap–Angkor Intl-LGW London Gatwick

29h 20m2 stops Bangkok Suvarnabhumi Dubai Intl

09:40 - 12:40LGW London Gatwick-SAI Siem Reap–Angkor Intl

20h 00m2 stops Dubai Intl Bangkok Suvarnabhumi

£917Emirates

Sun, 20 Dec - Fri, 8 Jan

19:25 - 05:25SAI Siem Reap–Angkor Intl-LGW London Gatwick

17h 00m1 stop Bangkok Suvarnabhumi

21:20 - 18:45LGW London Gatwick-SAI Siem Reap–Angkor Intl

14h 25m1 stop Bangkok Suvarnabhumi

£957British Airways

Sun, 20 Dec - Fri, 8 Jan

09:55 - 21:40SAI Siem Reap–Angkor Intl-LHR London Heathrow

18h 45m2 stops Bangkok Suvarnabhumi Vienna Intl

15:50 - 18:45LHR London Heathrow-SAI Siem Reap–Angkor Intl

19h 55m3 stops Hamburg Munich Franz Josef Strauss Bangkok Suvarnabhumi

£1,002Multiple Airlines

Sun, 20 Dec - Fri, 8 Jan

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Use the filters below to find and compare flights from Siem Reap to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LHR London Heathrow

SAILHR

Siem Reap–Angkor Intl

Sun 20/12

17:55-07:15

1 stop20h 20m

London Heathrow

Fri 8/1

17:40-21:10

2 stops20h 30m

£775

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LHR London Heathrow

SAILHR

Siem Reap–Angkor Intl

Sun 20/12

09:55-14:45

2 stops35h 50m

London Heathrow

Fri 8/1

07:05-16:05

2 stops26h 00m

£804

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LHR London Heathrow

SAILHR

Siem Reap–Angkor Intl

Sun 20/12

17:55-07:15

1 stop20h 20m

London Heathrow

Fri 8/1

11:00-19:40

1 stop25h 40m

£899

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LGW London Gatwick

SAILGW

Siem Reap–Angkor Intl

Sun 20/12

13:20-11:40

2 stops29h 20m

London Gatwick

Fri 8/1

09:40-12:40

2 stops20h 00m

£917

Fastest return journey

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LGW London Gatwick

SAILGW

Siem Reap–Angkor Intl

Sun 20/12

19:25-05:25

1 stop17h 00m

London Gatwick

Fri 8/1

21:20-18:45

1 stop14h 25m

£957

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LHR London Heathrow

SAILHR

Siem Reap–Angkor Intl

Sun 20/12

09:55-21:40

2 stops18h 45m

London Heathrow

Fri 8/1

15:50-18:45

3 stops19h 55m

£1,002

Cheapest one-way

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LHR London Heathrow

SAILHR

Siem Reap–Angkor Intl

Wed 9/12

19:05-17:50

2 stops29h 45m

£246

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LHR London Heathrow

SAILHR

Siem Reap–Angkor Intl

Fri 18/12

19:05-19:10

2 stops55h 05m

£247

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LGW London Gatwick

SAILGW

Siem Reap–Angkor Intl

Wed 9/12

19:05-06:55

2 stops42h 50m

£249

Siem ReapLondon

SAI Siem Reap–Angkor Intl - LGW London Gatwick

SAILGW

Siem Reap–Angkor Intl

Fri 18/12

16:50-13:05

1 stop27h 15m

£263

Flights are sorted by cheapest return flights first.

Showing 1-10 of 16 resultsSorted by cheapest first

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

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

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

Finnair is the most popular carrier operating from Siem Reap–Angkor Intl to United Kingdom

Cheap Siem Reap to United Kingdom flight deals and tips

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

Best price found	£246
Fastest flight time	20h 20m
Direct flights	None

The best one-way flight to United Kingdom from Siem Reap in the past 72 hours is £246. The best return flight deal from Siem Reap to United Kingdom found on momondo in the last 72 hours is £775.

The fastest flight from Siem Reap to United Kingdom takes 20h 20m

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

Search flight deals

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

When did momondo last update prices for flights from Siem Reap–Angkor Intl Airport to United Kingdom?
Prices for flights from Siem Reap–Angkor Intl Airport to United Kingdom are updated daily.
How old do you have to be to fly from Siem Reap–Angkor Intl Airport to United Kingdom?
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 Siem Reap–Angkor Intl Airport to United Kingdom.
What documentation or ID do you need to fly to United Kingdom?
The travel and health documents required for your trip to United Kingdom can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at United Kingdom. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

Finding the right flight to United Kingdom from Siem Reap is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to United Kingdom quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to United Kingdom from Siem Reap which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to United Kingdom from Siem Reap. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to United Kingdom from Siem Reap are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.