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Cheap flights from London City Airport to Siem Reap, Cambodia from £434

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 20/1. Fares are subject to change and may not be available on all flights or dates of travel.
LCY — SAI
1 Sep — 8 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London City to Siem Reap

Enter your travel dates to find the best prices.

Cheapest flights from London City to Siem Reap
Explore the most affordable flight options available from London City to Siem Reap. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 August 2026.

Wed 2/909:15
LCY
-
SAI
2 stops27h 40m
SWISS
Tue 29/909:40
SAI
-
LCY
2 stops29h 00m
SWISS
Deal found 1/8£627
Thu 3/909:15
LCY
-
SAI
2 stops27h 40m
SWISS
Thu 1/1009:40
SAI
-
LCY
2 stops29h 00m
SWISS
Deal found 1/8£652
Thu 10/909:15
LCY
-
SAI
2 stops27h 40m
SWISS
Wed 23/909:40
SAI
-
LCY
2 stops29h 00m
SWISS
Deal found 2/8£654
Wed 2/913:10
LCY
-
SAI
2 stops23h 45m
Multiple Airlines
Wed 30/916:00
SAI
-
LCY
2 stops22h 40m
Multiple Airlines
Deal found 1/8£661
Mon 23/1109:15
LCY
-
SAI
2 stops26h 30m
SWISS
Mon 7/1209:55
SAI
-
LCY
2 stops29h 45m
SWISS
Deal found 31/7£689
Wed 18/1113:30
LCY
-
SAI
2 stops22h 15m
SWISS
Wed 2/1209:55
SAI
-
LCY
2 stops29h 45m
SWISS
Deal found 1/8£692
Tue 10/1109:15
LCY
-
SAI
2 stops26h 30m
SWISS
Mon 23/1109:55
SAI
-
LCY
2 stops29h 45m
SWISS
Deal found 29/7£698
Thu 3/909:15
LCY
-
SAI
2 stops27h 40m
SWISS
Wed 30/916:00
SAI
-
LCY
2 stops22h 40m
SWISS
Deal found 1/8£699
Tue 10/1113:30
LCY
-
SAI
2 stops22h 15m
SWISS
Tue 24/1109:55
SAI
-
LCY
2 stops29h 45m
SWISS
Deal found 29/7£724
Wed 28/1009:15
LCY
-
SAI
2 stops26h 30m
SWISS
Tue 10/1109:55
SAI
-
LCY
2 stops29h 45m
SWISS
Deal found 30/7£724
Mon 2/1113:30
LCY
-
SAI
2 stops22h 15m
SWISS
Mon 16/1116:45
SAI
-
LCY
2 stops22h 55m
SWISS
Deal found 2/8£744
Tue 1/913:10
LCY
-
SAI
2 stops23h 45m
SWISS
Tue 29/909:40
SAI
-
LCY
2 stops29h 00m
SWISS
Deal found 1/8£750

Find flight deals from London City to Siem Reap

Discover tips and strategies to find the most affordable flight options for your journey from London City (LCY) to Siem Reap (SAI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 2 August 2026.

Round-trip from

£627

One-way from

£434

Popular in

December

Cheapest in

July

Average price

£925
SWISS
  • SWISS
  • 2/9-29/9
  • 4 total stops
  • 56h 40m total
  • London to Siem Reap
Search Deals
Lufthansa
  • Lufthansa
  • 20/1
  • 2 total stops
  • 32h 35m total
  • London to Siem Reap
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£73 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£27 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from London City to 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, Cheapflights users made 858,174 searches. Data last updated 2 August 2026.
Use the filters below to find and compare flights from London City Airport to Siem Reap that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Mon 23/11

09:15-18:45

2 stops26h 30m

Siem Reap–Angkor Intl

Mon 7/12

09:55-08:40

2 stops29h 45m

£689

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Tue 10/11

09:15-18:45

2 stops26h 30m

Siem Reap–Angkor Intl

Mon 23/11

09:55-08:40

2 stops29h 45m

£698
Fastest return journey

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Mon 18/1

09:15-18:45

2 stops26h 30m

Siem Reap–Angkor Intl

Mon 1/2

16:45-08:40

2 stops22h 55m

£750

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Thu 19/11

09:15-18:45

2 stops26h 30m

Siem Reap–Angkor Intl

Wed 2/12

09:55-08:40

2 stops29h 45m

£750

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Tue 3/11

09:15-18:45

2 stops26h 30m

Siem Reap–Angkor Intl

Sun 15/11

09:55-08:40

2 stops29h 45m

£767

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Mon 11/1

09:15-18:45

2 stops26h 30m

Siem Reap–Angkor Intl

Mon 15/2

16:45-08:40

2 stops22h 55m

£790

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Fri 20/11

13:30-18:45

2 stops22h 15m

Siem Reap–Angkor Intl

Thu 3/12

09:55-08:40

2 stops29h 45m

£827

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Wed 18/11

09:15-18:45

2 stops26h 30m

Siem Reap–Angkor Intl

Fri 4/12

09:55-11:40

2 stops32h 45m

£831

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Tue 3/11

13:30-18:45

2 stops22h 15m

Siem Reap–Angkor Intl

Tue 17/11

09:55-08:40

2 stops29h 45m

£833

LondonSiem Reap

LCY - SAI

LCYSAI

London City

Sun 8/11

13:20-18:45

2 stops22h 25m

Siem Reap–Angkor Intl

Sun 22/11

09:55-08:40

2 stops29h 45m

£844

Flights are sorted by cheapest return flights first.

Deals found on 29/7

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from London City to Siem Reap

Have a flexible travel schedule? Discover the best time to fly to Siem Reap from London City 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.

Related info for your journey

Find useful and relevant information for your journey from London City 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 London City?

    Most people fly into Siem Reap–Angkor Intl (SAI) if they book a flight to Siem Reap from London City. On average, Siem Reap–Angkor Intl has 0 inbound flights from London City per day from 0 airlines. Siem Reap–Angkor Intl is conveniently located just 24.7 mi from Siem Reap’s city center.

  • How long is the flight from London City Airport to Siem Reap?

    Airlines like SWISS fly from London City Airport to Siem Reap in about 26h 30m. The time it takes to get you to your destination can typically vary by up to . The distance from London City Airport to Siem Reap is about 6084 mi.

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

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

  • How can I find direct flights from London City to Siem Reap?

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

  • Can I find deals for business class flights from London City to Siem Reap?

    Yes. Cheapflights offers flight deals from London City 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for London City to Siem Reap

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Siem Reap flights
Gatwick to Siem Reap flights
Stansted to Siem Reap flights
Luton to Siem Reap flights

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 from London City to Siem Reap?

Cheapflights makes it easy to find London City to Siem Reap flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from London City to Siem Reap.

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

Need flexible booking options for your flight to Siem Reap from London City? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights offers price alerts on London City to Siem Reap flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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