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£290+ Cheap flights to Siem Reap

— SAI
15 Oct — 22 Oct1
1 adult
1 adult, Economy, 0 bags

Flights to Siem Reap in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Siem Reap

Mon 21/911:15 -
2 stops24h 50m
Tue 29/919:05 -
2 stops41h 55m
Deal found 15/9£487
Wed 23/911:00 -
2 stops21h 20m
Wed 21/1019:20 -
2 stops41h 10m
Deal found 12/9£534
Wed 16/911:15 -
2 stops23h 55m
Wed 14/1018:05 -
2 stops42h 50m
Deal found 13/9£538
Thu 24/911:35 -
2 stops26h 35m
Wed 21/1021:10 -
2 stops39h 30m
Deal found 11/9£591
Wed 23/912:35 -
2 stops20h 40m
Wed 21/1019:05 -
2 stops30h 15m
Deal found 14/9£618
Mon 9/1117:45 -
3 stops34h 15m
Mon 23/1116:50 -
2 stops30h 05m
Deal found 11/9£627
Thu 3/1206:00 -
2 stops29h 30m
Mon 14/1209:55 -
2 stops18h 45m
Deal found 15/9£627
Thu 26/1113:45 -
2 stops21h 45m
Fri 4/1209:55 -
2 stops18h 45m
Deal found 12/9£648
Thu 26/1117:45 -
3 stops34h 15m
Fri 4/1216:50 -
2 stops33h 30m
Deal found 12/9£656
Wed 16/922:00 -
2 stops38h 05m
Wed 14/1019:10 -
1 stop27h 45m
Deal found 11/9£665
Mon 21/907:15 -
3 stops27h 55m
Tue 29/923:50 -
3 stops28h 20m
Deal found 15/9£670
Thu 26/1106:25 -
3 stops26h 40m
Fri 4/1219:05 -
3 stops31h 55m
Deal found 12/9£722

Find flight deals to Siem Reap

Return from

£627

One-way from

£290

Popular in

December

Cheapest in

July

Average price

£768
9/11-23/11
  • 9/11-23/11
  • 5 total stops
  • 64h 20m total
  • London to Siem Reap
Search Deals
21/9-31/12
  • 21/9-31/12
  • 3 total stops
  • 39h 30m total
  • London to Siem Reap
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£60 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£29 potential savings vs. average return price).
Search Deals
Average for return flights in September 2026
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Cheapflights Fare Finder

 
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

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Mon 21/9

20:35-18:05

3 stops39h 30m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£290

LondonSiem Reap

STN London Stansted - SAI Siem Reap–Angkor Intl

STNSAI

London Stansted

Sun 1/11

11:15-15:00

3 stops44h 45m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£334

LondonSiem Reap

STN London Stansted - SAI Siem Reap–Angkor Intl

STNSAI

London Stansted

Tue 8/12

23:20-15:00

2 stops32h 40m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£345

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Tue 8/12

12:15-15:00

2 stops43h 45m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£347

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Wed 20/1

11:35-18:05

2 stops23h 30m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£347

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Sun 1/11

19:45-15:00

3 stops36h 15m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£363

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Mon 2/11

05:00-15:00

3 stops27h 00m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£365

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Mon 12/10

06:55-14:50

3 stops25h 55m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£366

LondonSiem Reap

LTN London Luton - SAI Siem Reap–Angkor Intl

LTNSAI

London Luton

Sat 31/10

19:45-15:00

3 stops36h 15m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£368

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Thu 15/10

06:40-14:50

3 stops26h 10m

Siem Reap–Angkor Intl

Wed 31/12

00:00-18:00

Nonstop0h 00m

£369

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight to Siem Reap

How long is the flight to Siem Reap?

On average, a flight from London to Siem Reap takes 19 hours 41 minutes. Flights to Siem Reap from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to Siem Reap?

The most popular airlines flying from London to Siem Reap are Singapore Airlines, Vietnam Airlines and Thai Airways.

Singapore Airlines
Singapore Airlines
From £186
Vietnam Airlines
Vietnam Airlines
From £614
British Airways
British Airways
From £746
Austrian Airlines
Austrian Airlines
From £526

What are the cheapest airlines that fly to Siem Reap?

The cheapest airlines flying from London to Siem Reap are Austrian Airlines, Vietnam Airlines and Singapore Airlines.

Rainfall in Siem Reap by month

In terms of precipitation, rainfall in Siem Reap ranges from 0.0 - 260.0 inches per month. September is typically the wettest month, when rainfall can reach 260.0 mm. January is typically the driest time to visit Siem Reap when rainfall is around 0.0 mm.

Temperature in Siem Reap by month

If weather is an important factor for your trip to Siem Reap, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 24.0 C).

Reviews of airlines servicing Siem Reap

Read through reviews of airlines serving Cambodia, such as Singapore Airlines,Vietnam Airlines, andAustrian Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.2
Very Good
1,602 reviews
Check prices

Food

7.8

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Singapore Airlines
8.2
Very Good
1,602 reviews
Singapore Airlines
8.2
Very Good
1,602 reviews
Check prices

Food

7.8

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Vietnam Airlines
7.7
Good
288 reviews
Singapore Airlines
8.2
Very Good
1,602 reviews
Check prices

Food

7.8

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
Austrian Airlines
7.6
Good
959 reviews
Singapore Airlines
8.2
Very Good
1,602 reviews
Check prices

Food

7.8

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered
British Airways
6.7
Okay
8,226 reviews
Singapore Airlines
8.2
Very Good
1,602 reviews
Check prices

Food

7.8

Entertainment

8.1

Boarding

8.3

Comfort

8.0

Crew

8.6

Overall

8.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

DAD - SIN

Person in front laid back his seat. I’m quite tall found it difficult to sit straight lucky seat next to me was empty was able to stretch my legs. Eating my meal was difficult also as seat remained lowered

FAQs about flying to Siem Reap

  • Can I find cheaper flights to Siem Reap if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Siem Reap on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Siem Reap?

    Based on reviews from Cheapflights users, Austrian Airlines is rated the highest out of the airlines that fly to Siem Reap.

  • Where does the fastest flight to Siem Reap depart from?

    For those looking to save time traveling to Siem Reap, London offers the quickest one-way flight (14 hours 10 minutes).

  • Does Siem Reap–Angkor Intl have car hire?

    Yes. Those touching down at Siem Reap–Angkor Intl can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Siem Reap–Angkor Intl?

    Yes. Siem Reap–Angkor Intl has hotels nearby for those requiring accommodations. Beng Mealea Lodge is the closest property to Siem Reap–Angkor Intl (6.0 mi away from Siem Reap–Angkor Intl).

See more FAQs

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