Find flights
Airlines
Travel Guide

£274+ Cheap flights to Siem Reap, Cambodia

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
— SAI
9 Sep — 16 Sep1
1 adult
1 adult, Economy, 0 bags

Flights to Siem Reap, Cambodia in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Siem Reap
Explore the most affordable flight options available to Siem Reap. Find the lowest fares based on data from user searches, with prices last updated on 10 August 2026.

Fri 30/1010:30 -
3 stops27h 30m
Sat 14/1122:00 -
2 stops39h 30m
Deal found 7/8£587
Mon 31/811:35 -
2 stops24h 30m
Fri 11/919:05 -
2 stops30h 05m
Deal found 8/8£611
Thu 3/1206:00 -
2 stops29h 45m
Mon 14/1209:55 -
2 stops18h 45m
Deal found 7/8£622
Tue 10/1109:05 -
2 stops26h 40m
Thu 3/1209:55 -
2 stops18h 45m
Deal found 8/8£628
Mon 16/1109:30 -
2 stops41h 25m
Mon 7/1209:55 -
2 stops29h 25m
Deal found 7/8£630
Wed 30/906:00 -
2 stops30h 55m
Wed 28/1019:25 -
2 stops19h 40m
Deal found 8/8£634
Thu 3/906:00 -
2 stops30h 55m
Thu 29/1009:55 -
2 stops29h 25m
Deal found 8/8£636
Thu 1/1006:00 -
2 stops45h 00m
Wed 14/1012:55 -
2 stops35h 45m
Deal found 8/8£640
Thu 3/906:25 -
3 stops29h 40m
Thu 29/1019:05 -
3 stops33h 50m
Deal found 8/8£644
Thu 12/1121:00 -
2 stops41h 00m
Tue 24/1122:00 -
2 stops50h 30m
Deal found 5/8£645
Thu 1/1006:00 -
2 stops30h 55m
Wed 14/1009:40 -
2 stops31h 40m
Deal found 7/8£647
Mon 2/1110:30 -
2 stops27h 30m
Sat 14/1122:00 -
2 stops39h 30m
Deal found 7/8£676

Find flight deals to Siem Reap

Find the latest flights to Siem Reap in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 10 August 2026.

Return from

£587

One-way from

£274

Popular in

December

Cheapest in

July

Average price

£924
China Eastern
  • China Eastern
  • 30/10-14/11
  • 5 total stops
  • 67h 00m total
  • London to Siem Reap
Search Deals
1/10
  • 1/10
  • 3 total stops
  • 51h 00m total
  • London to Siem Reap
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£98 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£36 potential savings vs. average return price).
Search Deals
Average for return flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Siem Reap that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 10 August 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

LCY London City - SAI Siem Reap–Angkor Intl

LCYSAI

London City

Thu 3/9

09:15-18:55

2 stops27h 40m

Siem Reap–Angkor Intl

Thu 29/10

09:55-08:40

2 stops29h 45m

£692

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Tue 5/1

09:05-18:45

2 stops26h 40m

Siem Reap–Angkor Intl

Wed 17/3

16:45-08:05

2 stops22h 20m

£708

LondonSiem Reap

STN London Stansted - SAI Siem Reap–Angkor Intl

STNSAI

London Stansted

Thu 3/9

06:25-18:05

3 stops29h 40m

Siem Reap–Angkor Intl

Thu 29/10

23:50-20:25

2 stops27h 35m

£727

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Sun 15/11

08:40-18:45

2 stops27h 05m

Siem Reap–Angkor Intl

Sun 24/1

09:55-07:50

2 stops28h 55m

£756
Fastest return journey

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Thu 8/10

22:15-18:45

1 stop14h 30m

Siem Reap–Angkor Intl

Fri 23/10

19:30-05:55

1 stop16h 25m

£759

LondonSiem Reap

STN London Stansted - SAI Siem Reap–Angkor Intl

STNSAI

London Stansted

Thu 12/11

20:15-21:10

2 stops41h 55m

Siem Reap–Angkor Intl

Tue 24/11

23:50-17:55

2 stops25h 05m

£764

LondonSiem Reap

LCY London City - SAI Siem Reap–Angkor Intl

LCYSAI

London City

Wed 4/11

13:30-18:45

2 stops22h 15m

Siem Reap–Angkor Intl

Thu 19/11

16:45-08:40

2 stops22h 55m

£773

LondonSiem Reap

LGW London Gatwick - SAI Siem Reap–Angkor Intl

LGWSAI

London Gatwick

Thu 5/11

08:30-18:45

2 stops27h 15m

Siem Reap–Angkor Intl

Wed 18/11

09:55-07:40

2 stops28h 45m

£774

LondonSiem Reap

STN London Stansted - SAI Siem Reap–Angkor Intl

STNSAI

London Stansted

Wed 30/9

14:55-21:30

2 stops24h 35m

Siem Reap–Angkor Intl

Wed 28/10

13:20-12:05

2 stops29h 45m

£802

LondonSiem Reap

LHR London Heathrow - SAI Siem Reap–Angkor Intl

LHRSAI

London Heathrow

Wed 6/1

19:25-18:45

2 stops16h 20m

Siem Reap–Angkor Intl

Mon 15/3

09:55-21:40

2 stops18h 45m

£814

Flights are sorted by cheapest return flights first.

Deals found on 9/8

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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 18 hours 57 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
Thai Airways
Thai Airways
From £886
British Airways
British Airways
From £758

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

Plan your trip to Siem Reap by taking into account the average rainfall totals 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

Plan your trip to Siem Reap by taking into account the average temperature totals 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

Get insights into the airlines that provide service to Siem Reap. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Siem Reap. Reviews last updated 10 August 2026.
Get a feel of what it's like to fly with Singapore Airlines,Thai Airways, andVietnam Airlines to Cambodia by reading reviews from past customers. 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
1,584 reviews
Check prices

Crew

8.6

Overall

8.2

Comfort

8.0

Entertainment

8.1

Food

7.8

Boarding

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Singapore Airlines
8.2
Very Good
1,584 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Crew

8.6

Overall

8.2

Comfort

8.0

Entertainment

8.1

Food

7.8

Boarding

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Thai Airways
7.9
Good
414 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Crew

8.6

Overall

8.2

Comfort

8.0

Entertainment

8.1

Food

7.8

Boarding

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
Vietnam Airlines
7.7
Good
284 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Crew

8.6

Overall

8.2

Comfort

8.0

Entertainment

8.1

Food

7.8

Boarding

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.
British Airways
6.7
Okay
8,155 reviews
Singapore Airlines
8.2
Very Good
1,584 reviews
Check prices

Crew

8.6

Overall

8.2

Comfort

8.0

Entertainment

8.1

Food

7.8

Boarding

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2026

SAI - SIN

The only issue we had was seat selection. Was not easy to change, after they assigned seats. Also, the premium economy seats, are nothing special.. All and all safe flight with minor back issues.

FAQs about flying to Siem Reap

  • What airport do you fly into for flights to Siem Reap?

    Travelers will need to book flights to Siem Reap–Angkor Intl (SAI) if they wish to fly to Siem Reap. The Siem Reap airport is 24.7 mi from the city center.

  • 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, Etihad Airways is rated the highest out of the airlines that fly to Siem Reap.

  • What is the cheapest airport to fly to in Siem Reap?

    Siem Reap–Angkor Intl is currently the cheapest airport to fly to in Siem Reap. One-way flights to Siem Reap–Angkor Intl typically cost £46, while return flights cost around £63.

  • How much is a return flight to Siem Reap?

    A return flight to Siem Reap will typically cost around £79, however they can be found for as little as £63.

  • 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 (16 hours 20 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Search flights to Siem Reap by cabin class

Find flights to Siem Reap, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class flights to Siem Reap
Business Class flights to Siem Reap
Prem Economy Class flights to Siem Reap
Economy Class flights to Siem Reap

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights to Siem Reap?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Siem Reap today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets to Siem Reap?

Millions of users choose and trust Cheapflights to book the best flight deals to Siem Reap for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights to Siem Reap with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights to Siem Reap, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights to Siem Reap become cheaper?

Yes! Start tracking prices for Siem Reap flights today and get alerted when prices change. To subscribe and begin receiving alerts, click the bell icon next to the flight deals above and provide your email address.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.