Find the cheapest flights from London Gatwick Airport to Siem Reap
Cheap return flights
Cheap one-way flights
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.China Eastern flights from London Gatwick Airport to Siem Reap
Our best China Eastern deals on London Gatwick Airport to Siem Reap flight tickets
SWISS flights from London Gatwick Airport to Siem Reap
Our best SWISS deals on London Gatwick Airport to Siem Reap flight tickets
momondo Fare Finder
Use the filters below to find and compare flights from London Gatwick Airport to Siem Reap that are best for you.
Fly from
Fly to
Route
Depart
Return
LondonSiem Reap
LGW London Gatwick - SAI Siem Reap–Angkor Intl
LGWSAI
London Gatwick
Sat 9/1
10:30-20:05
3 stops26h 35m
Siem Reap–Angkor Intl
Sat 6/2
21:05-06:30
2 stops40h 25m
LondonSiem Reap
LGW London Gatwick - SAI Siem Reap–Angkor Intl
LGWSAI
London Gatwick
Sat 9/1
10:30-20:05
3 stops26h 35m
Siem Reap–Angkor Intl
Sat 6/2
21:05-06:30
3 stops40h 25m
LondonSiem Reap
LGW London Gatwick - SAI Siem Reap–Angkor Intl
LGWSAI
London Gatwick
Sat 9/1
10:30-20:05
2 stops26h 35m
Siem Reap–Angkor Intl
Sat 6/2
21:05-06:30
2 stops40h 25m
LondonSiem Reap
LGW London Gatwick - SAI Siem Reap–Angkor Intl
LGWSAI
London Gatwick
Mon 23/11
10:30-20:05
3 stops26h 35m
Siem Reap–Angkor Intl
Thu 10/12
21:05-06:30
2 stops40h 25m
LondonSiem Reap
LGW London Gatwick - SAI Siem Reap–Angkor Intl
LGWSAI
London Gatwick
Mon 23/11
10:30-20:05
2 stops26h 35m
Siem Reap–Angkor Intl
Thu 10/12
21:05-06:30
2 stops40h 25m
LondonSiem Reap
LGW London Gatwick - SAI Siem Reap–Angkor Intl
LGWSAI
London Gatwick
Sat 5/12
10:30-20:05
2 stops26h 35m
Siem Reap–Angkor Intl
Sat 19/12
21:05-06:30
3 stops40h 25m
LondonSiem Reap
LGW London Gatwick - SAI Siem Reap–Angkor Intl
LGWSAI
London Gatwick
Sat 5/12
10:30-20:05
2 stops26h 35m
Siem Reap–Angkor Intl
Sat 19/12
21:05-06:30
2 stops40h 25m
LondonSiem Reap
LGW London Gatwick - SAI Siem Reap–Angkor Intl
LGWSAI
London Gatwick
Sat 5/12
10:30-20:05
3 stops26h 35m
Siem Reap–Angkor Intl
Sat 19/12
21:05-06:30
3 stops40h 25m
LondonSiem Reap
LGW London Gatwick - SAI Siem Reap–Angkor Intl
LGWSAI
London Gatwick
Tue 24/11
13:05-16:00
1 stop19h 55m
Siem Reap–Angkor Intl
Tue 1/12
10:45-09:05
1 stop29h 20m
LondonSiem Reap
LGW London Gatwick - SAI Siem Reap–Angkor Intl
LGWSAI
London Gatwick
Sun 7/3
13:05-16:00
1 stop19h 55m
Siem Reap–Angkor Intl
Tue 23/3
10:45-06:25
1 stop26h 40m
See travel insights to Siem Reap from
How to get the cheapest flight ticket from London Gatwick Airport to 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
When to book flights from London Gatwick Airport to Siem Reap
Cheap London Gatwick Airport to Siem Reap (LGW to SAI) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Gatwick Airport to Siem Reap
Frequently asked questions about flying from London Gatwick Airport to Siem Reap
How far is London Gatwick to Siem Reap–Angkor Intl by plane?
The distance between London Gatwick and Siem Reap–Angkor Intl is about 6087.6 mi. In terms of flight time, this usually takes a little over 19h 55m.
When did momondo last update prices for flights from London Gatwick Airport to Siem Reap–Angkor Intl Airport?
Prices for flights from London Gatwick Airport to Siem Reap–Angkor Intl Airport were last updated today.
How many operators does momondo search for flights from London Gatwick Airport to Siem Reap–Angkor Intl Airport?
There is 1 operator available for flights from London Gatwick Airport to Siem Reap–Angkor Intl Airport as of October 2026.
How old do you have to be to fly from London Gatwick Airport to Siem Reap–Angkor Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Gatwick Airport to Siem Reap–Angkor Intl Airport.
What documentation or ID do you need to fly to Siem Reap–Angkor Intl Airport?
The required travel and health documents for your Siem Reap–Angkor Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Siem Reap–Angkor Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from London Gatwick Airport to Siem Reap?
momondo data reveals that the most frequently booked airline on the route from London Gatwick Airport to Siem Reap is Singapore Airlines, representing 100% of all bookings.
Best airlines flying from London Gatwick Airport to Siem Reap
Compare and see reviews for airlines that fly from London Gatwick Airport to Siem Reap with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £732 | Free Cancellation | Rating 8.2 1,624 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from London 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 London.
Can I find flights from London to Siem Reap with flexible booking policies on momondo?
Yes. All flights to Siem Reap from London on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from London to Siem Reap?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Siem Reap from London.
I’m not ready to book a flight from London to Siem Reap right now. Can momondo alert me if prices change?
Price alerts on flights to Siem Reap from London 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.