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Cheap flights from the United Kingdom to Siem Reap, Cambodia

LHR — SAI
20 Nov — 27 Nov1
1 adult
1 adult, Economy

Cheap flight deals from United Kingdom to Siem Reap

Keep the following information in mind while searching for United Kingdom to Siem Reap flight deals. Data was last updated 21 October 2025.

Popular in

December

Cheapest in

September

Average price

£773
Highest demand for flights based on searches. 5% potential increase in price (£41 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£27 potential savings vs. average return price).
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Average for round-trip flights in October 2025
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Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Siem Reap

What is the cheapest month to book a flight from United Kingdom to Siem Reap?

Currently, September is the cheapest month in which you can book a flight from United Kingdom to Siem Reap (average of £610). Flying from United Kingdom to Siem Reap in August is currently the most expensive (average of £895). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from GB to SAI?

Find hourly flight availability from United Kingdom to Siem Reap. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 October 2025.

When flying from United Kingdom to Siem Reap, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 33% versus a flight at midday.

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 21 October 2025.
Read through reviews of airlines operating flights from the United Kingdom to Siem Reap, such as Emirates, Singapore Airlines, andThai Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Emirates
8.1
Very Good
3,380 reviews
Check prices

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Boarding

8.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Muhammed,Jun 2025

DXB - DUR

Amazing. Not bad at all. Wish all my flights are like this
Emirates
8.1
Very Good
3,380 reviews
Emirates
8.1
Very Good
3,380 reviews
Check prices

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Boarding

8.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Muhammed,Jun 2025

DXB - DUR

Amazing. Not bad at all. Wish all my flights are like this
Singapore Airlines
8.1
Very Good
1,383 reviews
Emirates
8.1
Very Good
3,380 reviews
Check prices

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Boarding

8.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Muhammed,Jun 2025

DXB - DUR

Amazing. Not bad at all. Wish all my flights are like this
Thai Airways
7.8
Good
359 reviews
Emirates
8.1
Very Good
3,380 reviews
Check prices

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Boarding

8.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Muhammed,Jun 2025

DXB - DUR

Amazing. Not bad at all. Wish all my flights are like this
Vietnam Airlines
7.6
Good
205 reviews
Emirates
8.1
Very Good
3,380 reviews
Check prices

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Boarding

8.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Muhammed,Jun 2025

DXB - DUR

Amazing. Not bad at all. Wish all my flights are like this
British Airways
6.7
Okay
7,461 reviews
Emirates
8.1
Very Good
3,380 reviews
Check prices

Entertainment

8.2

Food

7.9

Comfort

8.0

Crew

8.3

Boarding

8.1

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Muhammed,Jun 2025

DXB - DUR

Amazing. Not bad at all. Wish all my flights are like this

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Siem Reap. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Siem Reap–Angkor Intl (SAI) is the airport you will fly into if you book a flight from United Kingdom to Siem Reap. It is only a 24.7 mi journey from Siem Reap–Angkor Intl (SAI) to Siem Reap’s city center.

  • Can I find deals for flights from United Kingdom to Siem Reap that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Siem Reap flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Siem Reap?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Siem Reap.

  • Can I find deals for business class flights from United Kingdom to Siem Reap?

    Yes. Cheapflights offers flight deals from United Kingdom to Siem Reap by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from United Kingdom to Siem Reap?

    Currently, September is the cheapest month in which you can book a flight from United Kingdom to Siem Reap (average of £610). Flying from United Kingdom to Siem Reap in August is currently the most expensive (average of £895). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from United Kingdom to Siem Reap

Discover the top 6 airlines that operate flights from United Kingdom to Siem Reap. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 21 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Austrian AirlinesCheapest£582Average£690FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Vietnam AirlinesCheapest£616Average£719FlexibilityNo cancel feeOn-time81%
Search Vietnam Airlines flights
Singapore AirlinesCheapest£637Average£806FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
LufthansaCheapest£733Average£769FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Thai AirwaysCheapest£860Average£948FlexibilityNo cancel feeOn-time77%
Search Thai Airways flights
EmiratesCheapest£904Average£974FlexibilityNo cancel feeOn-time75%
Search Emirates flights

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How does Cheapflights help users find flights from United Kingdom to Siem Reap?

Cheapflights helps you search for flights from United Kingdom to Siem Reap via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Siem Reap from United Kingdom.

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

Yes! Cheapflights helps users easily find flights from United Kingdom to Siem Reap with no change fees.

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