Flights to Siem Reap–Angkor Intl

£362 Cheap flights to Siem Reap

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Siem Reap departing on 24/6. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from the United Kingdom to Siem Reap

Cheap return flights

Enter your travel dates to find the best prices.
Etihad Airways Logo
20:45 - 09:00
MAN
-
SAI
30h 15m
2 stops
Etihad Airways Logo
19:20 - 06:55
SAI
-
MAN
41h 35m
2 stops
£548Etihad Airways
Fri, 26 Jun - Fri, 18 Sep
SWISS Logo
09:25 - 18:55
LGW
-
SAI
27h 30m
2 stops
SWISS Logo
09:40 - 08:25
SAI
-
LGW
28h 45m
2 stops
£592SWISS
Thu, 3 Sep - Thu, 17 Sep
SWISS Logo
08:45 - 18:55
LHR
-
SAI
28h 10m
2 stops
SWISS Logo
09:40 - 07:55
SAI
-
LHR
28h 15m
2 stops
£593SWISS
Thu, 3 Sep - Thu, 17 Sep
Emirates Logo
14:05 - 21:10
STN
-
SAI
24h 05m
2 stops
Emirates Logo
23:50 - 17:55
SAI
-
STN
25h 05m
2 stops
£730Emirates
Mon, 2 Nov - Tue, 17 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
£749Emirates
Fri, 6 Nov - Tue, 17 Nov
Austrian Airlines Logo
06:05 - 18:45
EDI
-
SAI
29h 40m
3 stops
Austrian Airlines Logo
09:55 - 16:45
SAI
-
EDI
37h 50m
3 stops
£799Austrian Airlines
Sun, 6 Dec - Tue, 22 Dec
Lufthansa Logo
06:05 - 09:50
EDI
-
SAI
20h 45m
2 stops
Lufthansa Logo
16:45 - 12:00
SAI
-
EDI
26h 15m
2 stops
£852Lufthansa
Sun, 6 Dec - Tue, 22 Dec
British Airways Logo
15:10 - 18:45
EDI
-
SAI
20h 35m
2 stops
British Airways Logo
19:25 - 10:05
SAI
-
EDI
21h 40m
2 stops
£860British Airways
Thu, 3 Dec - Sun, 20 Dec
British Airways Logo
13:25 - 18:45
EDI
-
SAI
22h 20m
2 stops
British Airways Logo
19:25 - 18:25
SAI
-
EDI
30h 00m
2 stops
£867British Airways
Thu, 3 Dec - Fri, 18 Dec
Austrian Airlines Logo
06:05 - 18:45
EDI
-
SAI
29h 40m
3 stops
Austrian Airlines Logo
19:25 - 12:00
SAI
-
EDI
23h 35m
3 stops
£870Austrian Airlines
Sun, 6 Dec - Sun, 20 Dec

momondo Fare Finder

 
Locate flights to Siem Reap–Angkor Intl that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 279,928 searches and data was last updated on 11 June 2026.
Use the filters below to find and compare flights to Siem Reap that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

ManchesterSiem Reap

MAN - SAI

MANSAI

Manchester

Fri 26/6

20:45-09:00

2 stops30h 15m

Siem Reap–Angkor Intl

Fri 18/9

19:20-06:55

2 stops41h 35m

£548

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Thu 3/9

09:25-18:55

2 stops27h 30m

Siem Reap–Angkor Intl

Thu 17/9

09:40-08:25

2 stops28h 45m

£592

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Thu 3/9

08:45-18:55

2 stops28h 10m

Siem Reap–Angkor Intl

Thu 17/9

09:40-07:55

2 stops28h 15m

£593

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

£730

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Fri 6/11

14:05-21:10

2 stops24h 05m

Siem Reap–Angkor Intl

Tue 17/11

23:50-17:55

2 stops25h 05m

£749

EdinburghSiem Reap

EDI - SAI

EDISAI

Edinburgh Turnhouse

Sun 6/12

06:05-18:45

3 stops29h 40m

Siem Reap–Angkor Intl

Tue 22/12

09:55-16:45

3 stops37h 50m

£799

EdinburghSiem Reap

EDI - SAI

EDISAI

Edinburgh Turnhouse

Sun 6/12

06:05-09:50

2 stops20h 45m

Siem Reap–Angkor Intl

Tue 22/12

16:45-12:00

2 stops26h 15m

£852
Fastest return journey

EdinburghSiem Reap

EDI - SAI

EDISAI

Edinburgh Turnhouse

Thu 3/12

15:10-18:45

2 stops20h 35m

Siem Reap–Angkor Intl

Sun 20/12

19:25-10:05

2 stops21h 40m

£860

EdinburghSiem Reap

EDI - SAI

EDISAI

Edinburgh Turnhouse

Thu 3/12

13:25-18:45

2 stops22h 20m

Siem Reap–Angkor Intl

Fri 18/12

19:25-18:25

2 stops30h 00m

£867

EdinburghSiem Reap

EDI - SAI

EDISAI

Edinburgh Turnhouse

Sun 6/12

06:05-18:45

3 stops29h 40m

Siem Reap–Angkor Intl

Sun 20/12

19:25-12:00

3 stops23h 35m

£870

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Siem Reap from

Siem Reap flights insights and trends

Explore insights for your Siem Reap flight to craft the best travel plan

What is the cheapest month to fly to Siem Reap?

The month of September is, on average, the cheapest month to fly to Siem Reap from United Kingdom, with most prices found around £720. If you don’t want to visit Siem Reap in September, then you should wait until January to fly from United Kingdom, when ticket prices are also cheap, with an average price of £747.

Cheapest flights to Siem Reap–Angkor Intl

Find the cheapest flights to Siem Reap–Angkor Intl from your nearest city or airport
CHEAPEST MONTH TO FLY TO SIEM REAP FROM LONDON HEATHROW AIRPORTSeptember14% cheaperFlying from London Heathrow Airport to Siem Reap costs on average just £718 in September
MOST EXPENSIVE MONTH TO FLY TO SIEM REAP FROM LONDON HEATHROW AIRPORTAugust24% more expensiveIt costs about £1,029 for flights to Siem Reap from London Heathrow Airport in August
MOST POPULAR MONTH TO FLY TO SIEM REAP FROM LONDON HEATHROW AIRPORTMarch750% more users visitedMore momondo users searched in flights to Siem Reap from London Heathrow Airport in March than any other month

Cheap Siem Reap flight deals and tips

Summary info about Siem Reap flight prices, duration and airlines

Best One-Way Price

£362

Best Round-Trip Price

£548

Fastest flight time

26h 30m

Popular in

July
The best one-way flight price to Siem Reap from United Kingdom in the last 5 days is £362 (London Heathrow to Siem Reap–Angkor Intl).
The best round-trip flight price to Siem Reap from United Kingdom in the last 5 days is £548 (Manchester to Siem Reap–Angkor Intl).
The fastest flight to Siem Reap from United Kingdom takes 26h 30m (London City to Siem Reap–Angkor Intl).
July has the highest demand for flights to Siem Reap, with a 0% price increase on average.

Frequently asked questions about flying to Siem Reap

What is there to do in Siem Reap when it’s raining?

When planning your flight to Siem Reap, it is important to be aware that some months are not as ideal as others. Specifically, the months of May, June, or July could carry a higher chance of rain, as Siem Reap sees up to 5.1 inches (130 mm) or more. There are still things to do in Siem Reap even when it's raining, but be aware that rain is highly probable in the area. Angkor National Museum is a great museum to visit near Siem Reap and is especially great when the weather outside is less than desirable.

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

Prices for flights to Siem Reap–Angkor Intl Airport are refreshed on a daily basis.

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

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel 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.

Why use momondo?

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

It is quick and easy to find flights to Siem Reap 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 to Siem Reap with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for flights to Siem Reap to just show those with flexible booking policies.

How can momondo help me find flights to Siem Reap?

Once all potential Siem Reap flight options are in front of you momondo lets you sort and filter flights based on preferences such as airline, price and flight times, amongst many other options.

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

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

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