Flights to Siem Reap

£587 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 30/6. 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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Recent flights found to popular cities in Siem Reap

Find flights to these popular cities in Siem Reap from your nearest airport.
Etihad Airways
30 Jun
LHR
26h 20m
2 stops
SAI
14 Jul
SAI
45h 50m
2 stops
LHR
£587
SWISS
2 Sept
LGW
27h 30m
2 stops
SAI
23 Sept
SAI
28h 45m
2 stops
LGW
£594
SWISS
2 Sept
LHR
24h 45m
2 stops
SAI
23 Sept
SAI
18h 05m
2 stops
LHR
£594
China Eastern
6 Dec
LGW
45h 00m
2 stops
SAI
22 Dec
SAI
39h 30m
2 stops
LGW
£599
SWISS
19 Aug
LGW
27h 30m
2 stops
SAI
16 Sept
SAI
28h 45m
2 stops
LGW
£608
SWISS
19 Aug
LHR
23h 05m
2 stops
SAI
16 Sept
SAI
18h 05m
2 stops
LHR
£609
Multiple Airlines
2 Sept
LHR
27h 55m
2 stops
SAI
23 Sept
SAI
18h 05m
2 stops
LHR
£611
Multiple Airlines
19 Aug
LHR
27h 55m
2 stops
SAI
16 Sept
SAI
18h 05m
2 stops
LHR
£611
Etihad Airways
6 Jul
LHR
38h 30m
2 stops
SAI
12 Jul
SAI
29h 25m
2 stops
LHR
£612
Multiple Airlines
25 Sept
LHR
30h 55m
2 stops
SAI
29 Sept
SAI
18h 05m
2 stops
LHR
£613
Etihad Airways
6 Jul
LHR
31h 30m
2 stops
SAI
14 Jul
SAI
47h 25m
2 stops
LHR
£614
Multiple Airlines
24 Jun
MAN
32h 30m
2 stops
SAI
26 Nov
SAI
26h 30m
2 stops
MAN
£620

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.
Etihad Airways Logo
09:30 - 17:50
LHR
-
SAI
26h 20m
2 stops
Etihad Airways Logo
15:10 - 07:00
SAI
-
LHR
45h 50m
2 stops
£587Etihad Airways
Tue, 30 Jun - Tue, 14 Jul
SWISS Logo
09:25 - 18:55
LGW
-
SAI
27h 30m
2 stops
SWISS Logo
09:40 - 08:25
SAI
-
LGW
28h 45m
2 stops
£594SWISS
Wed, 2 Sep - Wed, 23 Sep
SWISS Logo
12:10 - 18:55
LHR
-
SAI
24h 45m
2 stops
SWISS Logo
09:40 - 21:45
SAI
-
LHR
18h 05m
2 stops
£594SWISS
Wed, 2 Sep - Wed, 23 Sep
Austrian Airlines Logo
19:25 - 18:45
LHR
-
SAI
16h 20m
2 stops
Austrian Airlines Logo
09:55 - 21:40
SAI
-
LHR
18h 45m
2 stops
£623Austrian Airlines
Wed, 28 Oct - Fri, 20 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
£729Emirates
Wed, 28 Oct - 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
£748Emirates
Fri, 30 Oct - 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
£797Austrian 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
£850Lufthansa
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
£858British Airways
Thu, 3 Dec - Sun, 20 Dec
British Airways Logo
15:10 - 18:45
EDI
-
SAI
20h 35m
2 stops
British Airways Logo
19:25 - 18:25
SAI
-
EDI
30h 00m
2 stops
£866British Airways
Thu, 3 Dec - Fri, 25 Dec

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 13 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

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 30/6

09:30-17:50

2 stops26h 20m

Siem Reap–Angkor Intl

Tue 14/7

15:10-07:00

2 stops45h 50m

£587

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Wed 2/9

09:25-18:55

2 stops27h 30m

Siem Reap–Angkor Intl

Wed 23/9

09:40-08:25

2 stops28h 45m

£594

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Wed 2/9

12:10-18:55

2 stops24h 45m

Siem Reap–Angkor Intl

Wed 23/9

09:40-21:45

2 stops18h 05m

£594
Fastest return journey

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Wed 28/10

19:25-18:45

2 stops16h 20m

Siem Reap–Angkor Intl

Fri 20/11

09:55-21:40

2 stops18h 45m

£623

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Wed 28/10

14:05-21:10

2 stops24h 05m

Siem Reap–Angkor Intl

Tue 17/11

23:50-17:55

2 stops25h 05m

£729

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Fri 30/10

14:05-21:10

2 stops24h 05m

Siem Reap–Angkor Intl

Tue 17/11

23:50-17:55

2 stops25h 05m

£748

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

£797

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

£850

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

£858

EdinburghSiem Reap

EDI - SAI

EDISAI

Edinburgh Turnhouse

Thu 3/12

15:10-18:45

2 stops20h 35m

Siem Reap–Angkor Intl

Fri 25/12

19:25-18:25

2 stops30h 00m

£866

Flights are sorted by cheapest return flights first.

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

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

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 57% 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

£361

Best Round-Trip Price

£587

Fastest flight time

24h 30m

Popular in

July
The best one-way flight price to Siem Reap from United Kingdom in the last 5 days is £361 (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 £587 (London Heathrow to Siem Reap–Angkor Intl).
The fastest flight to Siem Reap from United Kingdom takes 24h 30m (Birmingham to Siem Reap–Angkor Intl).
July has the highest demand for flights to Siem Reap, with a 1% 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 £120/pp. The absolute cheapest flight to Region of Siem Reap is £50/pp

What is the best airport to fly into to visit 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
Mon 13/7
Mon 20/7

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Popular routes according to searches in the past day on momondo