Flights to Siem Reap

£545 Cheap flights to Siem Reap

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight to Siem Reap departing on 2/9. 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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0 bags

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Recent flights found to popular cities in Siem Reap

Find flights to these popular cities in Siem Reap from your nearest airport.
SWISS
2 Sept
LHR
22h 55m
2 stops
SAI
16 Sept
SAI
28h 15m
2 stops
LHR
£545
SWISS
2 Sept
LGW
27h 25m
2 stops
SAI
16 Sept
SAI
28h 45m
2 stops
LGW
£560
China Eastern
4 Jun
LGW
26h 35m
3 stops
SAI
10 Jun
SAI
47h 50m
3 stops
LGW
£567
SWISS
2 Jun
LHR
22h 55m
2 stops
SAI
9 Jun
SAI
18h 05m
2 stops
LHR
£580
SWISS
31 May
LHR
28h 00m
2 stops
SAI
9 Jun
SAI
18h 05m
2 stops
LHR
£593
SWISS
18 May
LGW
27h 20m
2 stops
SAI
16 Jun
SAI
28h 45m
2 stops
LGW
£594
SWISS
20 May
LHR
22h 55m
2 stops
SAI
16 Jun
SAI
28h 15m
2 stops
LHR
£595
China Eastern
19 May
LHR
64h 50m
3 stops
SAI
17 Jun
SAI
27h 30m
2 stops
LHR
£595
SWISS
18 May
LGW
27h 20m
2 stops
SAI
17 Jun
SAI
22h 25m
2 stops
LGW
£601
SWISS
20 May
LHR
22h 55m
2 stops
SAI
17 Jun
SAI
21h 55m
2 stops
LHR
£602
Lufthansa
1 Jun
LHR
29h 20m
2 stops
SAI
8 Jun
SAI
32h 10m
2 stops
LHR
£604
SWISS
2 Sept
LCY
23h 35m
2 stops
SAI
16 Sept
SAI
29h 00m
2 stops
LCY
£605

Find the cheapest flights from the United Kingdom to Siem Reap

Recent return flight deals from the United Kingdom to Siem Reap

Enter your travel dates to find the best prices.
SWISS Logo
13:50 - 18:45
LHR
-
SAI
22h 55m
2 stops
SWISS Logo
09:40 - 07:55
SAI
-
LHR
28h 15m
2 stops
£545SWISS
Wed, 2 Sep - Wed, 16 Sep
SWISS Logo
09:20 - 18:45
LGW
-
SAI
27h 25m
2 stops
SWISS Logo
09:40 - 08:25
SAI
-
LGW
28h 45m
2 stops
£560SWISS
Wed, 2 Sep - Wed, 16 Sep
China Eastern Logo
11:35 - 20:10
LGW
-
SAI
26h 35m
3 stops
China Eastern Logo
21:10 - 15:00
SAI
-
LGW
47h 50m
3 stops
£567China Eastern
Thu, 4 Jun - Wed, 10 Jun
SWISS Logo
13:50 - 18:45
LHR
-
SAI
22h 55m
2 stops
SWISS Logo
09:40 - 21:45
SAI
-
LHR
18h 05m
2 stops
£580SWISS
Tue, 2 Jun - Tue, 9 Jun
SWISS Logo
08:45 - 18:45
LHR
-
SAI
28h 00m
2 stops
SWISS Logo
09:40 - 21:45
SAI
-
LHR
18h 05m
2 stops
£593SWISS
Sun, 31 May - Tue, 9 Jun
China Eastern Logo
21:20 - 20:10
LHR
-
SAI
64h 50m
3 stops
China Eastern Logo
21:10 - 18:40
SAI
-
LHR
27h 30m
2 stops
£595China Eastern
Tue, 19 May - Wed, 17 Jun
Lufthansa Logo
07:25 - 18:45
LHR
-
SAI
29h 20m
2 stops
Lufthansa Logo
10:30 - 12:40
SAI
-
LHR
32h 10m
2 stops
£604Lufthansa
Mon, 1 Jun - Mon, 8 Jun
Emirates Logo
21:05 - 21:30
STN
-
SAI
42h 25m
2 stops
Emirates Logo
23:50 - 18:45
SAI
-
STN
24h 55m
2 stops
£721Emirates
Sun, 17 May - Tue, 16 Jun
Emirates Logo
21:05 - 21:30
STN
-
SAI
42h 25m
2 stops
Emirates Logo
12:55 - 18:45
SAI
-
STN
35h 50m
2 stops
£736Emirates
Thu, 30 Apr - Mon, 25 May
Singapore Airlines Logo
06:00 - 09:40
MAN
-
SAI
45h 40m
2 stops
Singapore Airlines Logo
10:30 - 09:15
SAI
-
MAN
52h 45m
1 stop
£815Singapore Airlines
Mon, 1 Jun - Wed, 1 Jul

momondo Fare Finder

 
Locate flights to Siem Reap 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 12 March 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

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Wed 2/9

13:50-18:45

2 stops22h 55m

Siem Reap–Angkor Intl

Wed 16/9

09:40-07:55

2 stops28h 15m

£545

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Wed 2/9

09:20-18:45

2 stops27h 25m

Siem Reap–Angkor Intl

Wed 16/9

09:40-08:25

2 stops28h 45m

£560

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Thu 4/6

11:35-20:10

3 stops26h 35m

Siem Reap–Angkor Intl

Wed 10/6

21:10-15:00

3 stops47h 50m

£567
Fastest return journey

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 2/6

13:50-18:45

2 stops22h 55m

Siem Reap–Angkor Intl

Tue 9/6

09:40-21:45

2 stops18h 05m

£580

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sun 31/5

08:45-18:45

2 stops28h 00m

Siem Reap–Angkor Intl

Tue 9/6

09:40-21:45

2 stops18h 05m

£593

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 19/5

21:20-20:10

3 stops64h 50m

Siem Reap–Angkor Intl

Wed 17/6

21:10-18:40

2 stops27h 30m

£595

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Mon 1/6

07:25-18:45

2 stops29h 20m

Siem Reap–Angkor Intl

Mon 8/6

10:30-12:40

2 stops32h 10m

£604

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Sun 17/5

21:05-21:30

2 stops42h 25m

Siem Reap–Angkor Intl

Tue 16/6

23:50-18:45

2 stops24h 55m

£721

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Thu 30/4

21:05-21:30

2 stops42h 25m

Siem Reap–Angkor Intl

Mon 25/5

12:55-18:45

2 stops35h 50m

£736

ManchesterSiem Reap

MAN - SAI

MANSAI

Manchester

Mon 1/6

06:00-09:40

2 stops45h 40m

Siem Reap–Angkor Intl

Wed 1/7

10:30-09:15

1 stop52h 45m

£815

Flights are sorted by cheapest return flights first.

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

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Siem Reap flights insights and trends

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

Which airlines fly to Region of Siem Reap?

Singapore Airlines, Vietnam Airlines and Emirates are the top three most popular airlines that fly to Region of Siem Reap from United Kingdom according to our data. Singapore Airlines is the first choice among our users, with 61% of people opting to fly with this airline when travelling to Region of Siem Reap. Keep in mind that there are 6 different airlines that fly to Region of Siem Reap on a routine basis, so you have a few additional options to choose from.

Cheapest flights to cities in Siem Reap

Click on the cities below to find out when it's cheapest to fly to Siem Reap from United Kingdom
Siem Reap
Siem Reap

Cheap Siem Reap flight deals and tips

Summary info about Siem Reap flight prices, duration and airlines

Best One-Way Price

£276

Best Round-Trip Price

£545

Fastest flight time

18h 35m

Popular in

July
The best one-way flight price to Siem Reap from United Kingdom in the last 72 hours is £276 (London Stansted to Siem Reap–Angkor Intl).
The best round-trip flight price to Siem Reap from United Kingdom in the last 72 hours is £545 (London Heathrow to Siem Reap–Angkor Intl).
The fastest flight to Siem Reap from United Kingdom takes 18h 35m (Birmingham to Siem Reap–Angkor Intl).
July has the highest demand for flights to Siem Reap, with a 14% price increase on average.

Frequently asked questions about flying to Siem Reap

What is the cheapest flight I can find to Region of Siem Reap?

Flights to Region of Siem Reap vary based on month, airline, when you book, where you are departing from and many more variables, but on average momondo users can expect to spend about £115/pp. The absolute cheapest flight to Region of Siem Reap is £47/pp

What is the best airport to fly into to visit Siem Reap?

What are the most popular landmarks in Region of Siem Reap?

What is the weather like in Region of Siem Reap?

Temperatures in Region of Siem Reap can vary between 24 °C and 29 °C based on the time of year. Typically, the coldest month in Region of Siem Reap will be December, and the warmest month will be April. It is also worth noting that those looking to avoid rain and/or snow should consider travelling to Region of Siem Reap in January, February, and February, as that is when precipitation is least likely.

Which airlines fly to Region of Siem Reap?

When did momondo last update prices for flights to Siem Reap?

Prices for flights to Siem Reap are updated daily.

How many operators does momondo search for flights to Siem Reap?

How old do you have to be to fly to Siem Reap?

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 to Siem Reap.

What documentation or ID do you need to fly to Siem Reap?

The travel and health documents you'll need for your trip to Siem Reap 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. It is always advisable to seek 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?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Siem Reap.

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

Yes. momondo enables you to select and highlight flights to Siem Reap with this policy.

How can momondo help me find flights to Siem Reap?

Once you have performed a search for flights to Siem Reap, momondo helps you find the right flight 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 to Siem Reap right now. Can momondo alert me if prices change?

Price alerts on flights to 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.

An easier way to manage your Siem Reap trip

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1 adult
Sat 11/4
Sat 18/4

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Popular Flights to Siem Reap

Popular routes according to searches in the past day on momondo