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Cheap flights from the United Kingdom to Siem Reap from £282

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Siem Reap departing on 10/3. 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

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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.
China Eastern Logo
10:30 - 21:00
LGW
-
SAI
27h 30m
2 stops
China Eastern Logo
22:00 - 06:30
SAI
-
LGW
39h 30m
2 stops
£524China Eastern
Mon, 9 Mar - Tue, 17 Mar
China Eastern Logo
10:30 - 21:00
LGW
-
SAI
27h 30m
3 stops
China Eastern Logo
22:00 - 14:00
SAI
-
LGW
47h 00m
2 stops
£542China Eastern
Mon, 9 Mar - Sat, 14 Mar
China Eastern Logo
10:30 - 21:00
LGW
-
SAI
27h 30m
3 stops
China Eastern Logo
21:10 - 15:10
SAI
-
LGW
48h 00m
3 stops
£544China Eastern
Mon, 9 Mar - Wed, 1 Apr
Multiple Airlines Logo
17:00 - 21:00
LGW
-
SAI
45h 00m
3 stops
Multiple Airlines Logo
21:40 - 14:00
SAI
-
LGW
23h 20m
2 stops
£565Multiple Airlines
Sun, 15 Mar - Sun, 22 Mar
Multiple Airlines Logo
17:00 - 21:00
LGW
-
SAI
45h 00m
2 stops
Multiple Airlines Logo
09:20 - 06:30
SAI
-
LGW
52h 10m
2 stops
£590Multiple Airlines
Sun, 15 Mar - Mon, 23 Mar
Lufthansa Logo
17:55 - 18:45
MAN
-
SAI
18h 50m
2 stops
Lufthansa Logo
10:30 - 17:20
SAI
-
MAN
36h 50m
2 stops
£603Lufthansa
Fri, 29 May - Sat, 13 Jun
Emirates Logo
20:15 - 21:10
STN
-
SAI
41h 55m
2 stops
Emirates Logo
23:50 - 18:45
SAI
-
STN
24h 55m
2 stops
£753Emirates
Sun, 1 Mar - Tue, 31 Mar
Emirates Logo
14:05 - 21:10
STN
-
SAI
24h 05m
2 stops
Emirates Logo
23:50 - 18:45
SAI
-
STN
24h 55m
2 stops
£766Emirates
Mon, 2 Mar - Tue, 31 Mar
Singapore Airlines Logo
10:35 - 09:40
MAN
-
SAI
17h 05m
1 stop
Singapore Airlines Logo
10:30 - 09:15
SAI
-
MAN
28h 45m
1 stop
£777Singapore Airlines
Fri, 29 May - Sat, 13 Jun
Singapore Airlines Logo
05:55 - 09:40
MAN
-
SAI
45h 45m
2 stops
Singapore Airlines Logo
10:30 - 09:15
SAI
-
MAN
28h 45m
1 stop
£796Singapore Airlines
Fri, 29 May - Sat, 13 Jun

China Eastern flights from United Kingdom to Region of Siem Reap

Our best China Eastern deals on United Kingdom to Region of Siem Reap flight tickets
China Eastern
9 Mar
LGW10:30London Gatwick
27h 30m
3 stops
SAI21:00Siem Reap–Angkor Intl
17 Mar
SAI22:00Siem Reap–Angkor Intl
39h 30m
2 stops
LGW06:30London Gatwick
£524
China Eastern
9 Mar
LGW10:30London Gatwick
27h 30m
3 stops
SAI21:00Siem Reap–Angkor Intl
14 Mar
SAI22:00Siem Reap–Angkor Intl
47h 00m
2 stops
LGW14:00London Gatwick
£542
China Eastern
18 Mar
LGW10:30London Gatwick
27h 30m
2 stops
SAI21:00Siem Reap–Angkor Intl
30 Mar
SAI21:10Siem Reap–Angkor Intl
63h 30m
2 stops
LGW06:40London Gatwick
£545

Malaysia Airlines flights from United Kingdom to Region of Siem Reap

Our best Malaysia Airlines deals on United Kingdom to Region of Siem Reap flight tickets
Malaysia Airlines
24 Feb
LHR21:25London Heathrow
29h 35m
1 stop
SAI10:00Siem Reap–Angkor Intl
24 Mar
SAI11:00Siem Reap–Angkor Intl
25h 35m
1 stop
LHR05:35London Heathrow
£616
Malaysia Airlines
26 Feb
LHR21:25London Heathrow
29h 35m
1 stop
SAI10:00Siem Reap–Angkor Intl
28 Mar
SAI11:00Siem Reap–Angkor Intl
35h 35m
1 stop
LHR15:35London Heathrow
£620
Malaysia Airlines
17 Feb
LHR21:25London Heathrow
29h 35m
1 stop
SAI10:00Siem Reap–Angkor Intl
26 Feb
SAI11:00Siem Reap–Angkor Intl
35h 25m
1 stop
LHR15:25London Heathrow
£691

momondo Fare Finder

 
Customise your flight search to find flights from United Kingdom to Region of Siem Reap that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 3 February 2026.
Use the filters below to find and compare flights from the United Kingdom to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Mon 9/3

10:30-21:00

2 stops27h 30m

Siem Reap–Angkor Intl

Tue 17/3

22:00-06:30

2 stops39h 30m

£524

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Mon 9/3

10:30-21:00

3 stops27h 30m

Siem Reap–Angkor Intl

Sat 14/3

22:00-14:00

2 stops47h 00m

£542

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Mon 9/3

10:30-21:00

3 stops27h 30m

Siem Reap–Angkor Intl

Wed 1/4

21:10-15:10

3 stops48h 00m

£544

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sun 15/3

17:00-21:00

3 stops45h 00m

Siem Reap–Angkor Intl

Sun 22/3

21:40-14:00

2 stops23h 20m

£564

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sun 15/3

17:00-21:00

2 stops45h 00m

Siem Reap–Angkor Intl

Mon 23/3

09:20-06:30

2 stops52h 10m

£590

ManchesterSiem Reap

MAN - SAI

MANSAI

Manchester

Fri 29/5

17:55-18:45

2 stops18h 50m

Siem Reap–Angkor Intl

Sat 13/6

10:30-17:20

2 stops36h 50m

£603

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Sun 1/3

20:15-21:10

2 stops41h 55m

Siem Reap–Angkor Intl

Tue 31/3

23:50-18:45

2 stops24h 55m

£753

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Mon 2/3

14:05-21:10

2 stops24h 05m

Siem Reap–Angkor Intl

Tue 31/3

23:50-18:45

2 stops24h 55m

£766

ManchesterSiem Reap

MAN - SAI

MANSAI

Manchester

Fri 29/5

10:35-09:40

1 stop17h 05m

Siem Reap–Angkor Intl

Sat 13/6

10:30-09:15

1 stop28h 45m

£777

ManchesterSiem Reap

MAN - SAI

MANSAI

Manchester

Fri 29/5

05:55-09:40

2 stops45h 45m

Siem Reap–Angkor Intl

Sat 13/6

10:30-09:15

1 stop28h 45m

£796

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

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

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 month to fly to Region of Siem Reap?

If you’re not able to fly to Region of Siem Reap in September, then January is your next best option. Flight prices from United Kingdom to Region of Siem Reap during January average around £717.

How far in advance should I book a flight to Region of Siem Reap?

You are more likely to see cheaper flights to Region of Siem Reap from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Siem Reap for around £780 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Siem Reap from United Kingdom for as low as £662 on momondo.

Can stopping save me money on United Kingdom to Region of Siem Reap flights?

You could potentially save up to 22% on your flight if you consider stops on a United Kingdom to Region of Siem Reap flight.

Cheap United Kingdom to Region of Siem Reap flight deals and tips

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

Fastest flight time

17h 15m

Direct flights

None
The fastest flight from United Kingdom to Region of Siem Reap takes 17h 15m
There are no direct flights from United Kingdom to Region of Siem Reap. There are no popular flight routes from United Kingdom to Region of Siem Reap.
Search flight deals

  • When did momondo last update prices for flights from United Kingdom to Siem Reap?

    Prices for flights from United Kingdom to Siem Reap were last updated today.

  • How many operators does momondo search for flights from United Kingdom to Siem Reap?

  • How old do you have to be to fly from United Kingdom to Siem Reap?

    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 United Kingdom to Siem Reap.

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

    The travel and health documents required for your trip to Siem Reap 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 Siem Reap. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from United Kingdom to Region of Siem Reap

Compare and see reviews for airlines that fly from United Kingdom to Region of Siem Reap with momondo
Airline
Rating
Free Cancellation
Price
Austrian AirlinesPriceFrom £530Free CancellationRating
7.5
896 reviews
Search Austrian Airlines flights
LufthansaPriceFrom £587Free CancellationRating
6.8
7,758 reviews
Search Lufthansa flights
Vietnam AirlinesPriceFrom £606Free CancellationRating
7.6
224 reviews
Search Vietnam Airlines flights
Singapore AirlinesPriceFrom £652Free CancellationRating
8.2
1,443 reviews
Search Singapore Airlines flights
Thai AirwaysPriceFrom £844Free CancellationRating
7.8
381 reviews
Search Thai Airways flights
EmiratesPriceFrom £880Free CancellationRating
8.1
3,497 reviews
Search Emirates flights

Why use momondo?

Why should I use momondo to find a flight deal from United Kingdom 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 from United Kingdom.

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

Yes. All flights to Siem Reap from United Kingdom on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between United Kingdom and Siem Reap by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for United Kingdom to Siem Reap flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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