Flights to Siem Reap

£596 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 10/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Recent flights found to popular cities in Siem Reap

Find flights to these popular cities in Siem Reap from your nearest airport.
Etihad Airways
10 May
LHR
22h 50m
2 stops
SAI
16 May
SAI
21h 50m
2 stops
LHR
£596
Etihad Airways
12 Jun
LHR
29h 15m
2 stops
SAI
23 Jun
SAI
27h 35m
2 stops
LHR
£605
Multiple Airlines
12 Jun
LHR
20h 40m
2 stops
SAI
27 Jun
SAI
27h 50m
2 stops
LHR
£672
Multiple Airlines
15 Sept
LHR
64h 50m
3 stops
SAI
29 Sept
SAI
24h 00m
2 stops
LHR
£706
SWISS
26 May
LGW
27h 40m
2 stops
SAI
10 Jun
SAI
28h 40m
2 stops
LGW
£715
Multiple Airlines
15 Sept
LHR
29h 30m
2 stops
SAI
29 Sept
SAI
18h 05m
2 stops
LHR
£716
Austrian Airlines
25 Sept
LHR
30h 55m
2 stops
SAI
29 Sept
SAI
25h 25m
2 stops
LHR
£716
SWISS
14 Jun
LGW
27h 50m
2 stops
SAI
6 Jul
SAI
28h 45m
2 stops
LGW
£716
SWISS
14 Jun
LHR
30h 55m
2 stops
SAI
6 Jul
SAI
28h 15m
2 stops
LHR
£717
Multiple Airlines
12 Jun
LGW
21h 10m
2 stops
SAI
23 Jun
SAI
26h 05m
2 stops
LGW
£719
Emirates
15 Jun
STN
24h 35m
2 stops
SAI
7 Jul
SAI
24h 55m
2 stops
STN
£731
Emirates
14 Jun
LGW
39h 35m
2 stops
SAI
7 Jul
SAI
25h 55m
2 stops
LGW
£737

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
21:45 - 09:00
LHR
-
SAI
29h 15m
2 stops
Etihad Airways Logo
15:10 - 12:45
SAI
-
LHR
27h 35m
2 stops
£605Etihad Airways
vie., 12 jun. - mar., 23 jun.
Multiple Airlines Logo
16:15 - 18:55
LHR
-
SAI
20h 40m
2 stops
Multiple Airlines Logo
09:40 - 07:30
SAI
-
LHR
27h 50m
2 stops
£672Multiple Airlines
vie., 12 jun. - sáb., 27 jun.
Multiple Airlines Logo
21:20 - 20:10
LHR
-
SAI
64h 50m
3 stops
Multiple Airlines Logo
12:55 - 06:55
SAI
-
LHR
24h 00m
2 stops
£706Multiple Airlines
mar., 15 sep. - mar., 29 sep.
SWISS Logo
09:25 - 19:05
LGW
-
SAI
27h 40m
2 stops
SWISS Logo
09:45 - 08:25
SAI
-
LGW
28h 40m
2 stops
£715SWISS
mar., 26 may. - mié., 10 jun.
Multiple Airlines Logo
07:25 - 18:55
LHR
-
SAI
29h 30m
2 stops
Multiple Airlines Logo
09:40 - 21:45
SAI
-
LHR
18h 05m
2 stops
£716Multiple Airlines
mar., 15 sep. - mar., 29 sep.
Austrian Airlines Logo
06:00 - 18:55
LHR
-
SAI
30h 55m
2 stops
Austrian Airlines Logo
12:55 - 08:20
SAI
-
LHR
25h 25m
2 stops
£716Austrian Airlines
vie., 25 sep. - mar., 29 sep.
SWISS Logo
09:05 - 18:55
LGW
-
SAI
27h 50m
2 stops
SWISS Logo
09:40 - 08:25
SAI
-
LGW
28h 45m
2 stops
£716SWISS
dom., 14 jun. - lun., 6 jul.
Emirates Logo
14:55 - 21:30
STN
-
SAI
24h 35m
2 stops
Emirates Logo
23:50 - 18:45
SAI
-
STN
24h 55m
2 stops
£731Emirates
lun., 15 jun. - mar., 7 jul.
Emirates Logo
23:55 - 21:30
LGW
-
SAI
39h 35m
2 stops
Emirates Logo
23:50 - 19:45
SAI
-
LGW
25h 55m
2 stops
£737Emirates
dom., 14 jun. - mar., 7 jul.
Singapore Airlines Logo
10:35 - 15:10
MAN
-
SAI
22h 35m
1 stop
Singapore Airlines Logo
16:00 - 09:15
SAI
-
MAN
47h 15m
1 stop
£1,769Singapore Airlines
mar., 18 ago. - dom., 30 ago.

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 30 abril 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

vie. 12/6

21:45-09:00

2 stops29h 15m

Siem Reap–Angkor Intl

mar. 23/6

15:10-12:45

2 stops27h 35m

£605

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

vie. 12/6

16:15-18:55

2 stops20h 40m

Siem Reap–Angkor Intl

sáb. 27/6

09:40-07:30

2 stops27h 50m

£672

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

mar. 15/9

21:20-20:10

3 stops64h 50m

Siem Reap–Angkor Intl

mar. 29/9

12:55-06:55

2 stops24h 00m

£706

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

mar. 26/5

09:25-19:05

2 stops27h 40m

Siem Reap–Angkor Intl

mié. 10/6

09:45-08:25

2 stops28h 40m

£715
Fastest return journey

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

mar. 15/9

07:25-18:55

2 stops29h 30m

Siem Reap–Angkor Intl

mar. 29/9

09:40-21:45

2 stops18h 05m

£716

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

vie. 25/9

06:00-18:55

2 stops30h 55m

Siem Reap–Angkor Intl

mar. 29/9

12:55-08:20

2 stops25h 25m

£716

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

dom. 14/6

09:05-18:55

2 stops27h 50m

Siem Reap–Angkor Intl

lun. 6/7

09:40-08:25

2 stops28h 45m

£716

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

lun. 15/6

14:55-21:30

2 stops24h 35m

Siem Reap–Angkor Intl

mar. 7/7

23:50-18:45

2 stops24h 55m

£731

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

dom. 14/6

23:55-21:30

2 stops39h 35m

Siem Reap–Angkor Intl

mar. 7/7

23:50-19:45

2 stops25h 55m

£737

ManchesterSiem Reap

MAN - SAI

MANSAI

Manchester

mar. 18/8

10:35-15:10

1 stop22h 35m

Siem Reap–Angkor Intl

dom. 30/8

16:00-09:15

1 stop47h 15m

£1,769

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

£384

Best Round-Trip Price

£605

Fastest flight time

26h 30m
The best one-way flight price to Siem Reap from United Kingdom in the last 72 hours is £384 (London Heathrow to Siem Reap–Angkor Intl).
The best round-trip flight price to Siem Reap from United Kingdom in the last 72 hours is £605 (London Heathrow to Siem Reap–Angkor Intl).
The fastest flight to Siem Reap from United Kingdom takes 26h 30m (Manchester to Siem Reap–Angkor Intl).

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 £136/pp. The absolute cheapest flight to Region of Siem Reap is £40/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

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.
1 adult
sáb. 30/5
sáb. 6/6

Find better results for your trip to Siem Reap

Popular Flights to Siem Reap

Popular routes according to searches in the past day on momondo