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£360+ 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 26/6. Fares are subject to change and may not be available on all flights or dates of travel.
— SAI
19 Jun — 26 Jun1
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 20 May 2026.

Thu 28/509:30
LHR
-
SAI
2 stops19h 45m
Etihad Airways
Thu 4/619:20
SAI
-
LHR
2 stops29h 25m
Etihad Airways
Deal found 16/5£574
Sun 14/609:30
LHR
-
SAI
2 stops22h 50m
Etihad Airways
Sun 21/613:00
SAI
-
LHR
2 stops48h 00m
Etihad Airways
Deal found 15/5£585
Thu 19/1110:30
LGW
-
SAI
2 stops51h 30m
China Eastern
Tue 8/1222:00
SAI
-
LGW
2 stops39h 30m
China Eastern
Deal found 19/5£599
Sun 21/609:30
LHR
-
SAI
2 stops19h 45m
Etihad Airways
Sun 28/613:00
SAI
-
LHR
2 stops35h 45m
Etihad Airways
Deal found 17/5£600
Thu 5/1110:30
LGW
-
SAI
2 stops51h 30m
China Eastern
Sat 28/1122:00
SAI
-
LGW
3 stops39h 30m
China Eastern
Deal found 18/5£614
Wed 10/621:45
LHR
-
SAI
2 stops31h 30m
Etihad Airways
Thu 25/615:10
SAI
-
LHR
2 stops21h 50m
Etihad Airways
Deal found 15/5£616
Sun 15/1117:00
LGW
-
SAI
2 stops45h 00m
China Eastern
Thu 3/1222:00
SAI
-
LGW
2 stops39h 30m
China Eastern
Deal found 19/5£621
Sat 20/621:45
LHR
-
SAI
2 stops31h 30m
Multiple Airlines
Sun 28/619:20
SAI
-
LHR
2 stops29h 25m
Multiple Airlines
Deal found 15/5£631
Thu 28/509:30
LHR
-
SAI
2 stops25h 25m
Etihad Airways
Thu 18/615:10
SAI
-
LHR
2 stops27h 35m
Etihad Airways
Deal found 18/5£640
Wed 4/1110:30
LGW
-
SAI
3 stops27h 30m
China Eastern
Sat 28/1122:00
SAI
-
LGW
2 stops39h 30m
China Eastern
Deal found 18/5£664
Tue 17/1110:30
LGW
-
SAI
2 stops51h 30m
China Eastern
Tue 8/1222:00
SAI
-
LGW
3 stops39h 30m
China Eastern
Deal found 19/5£671
Sun 21/608:45
LHR
-
SAI
2 stops28h 10m
SWISS
Mon 29/609:40
SAI
-
LHR
2 stops28h 15m
SWISS
Deal found 15/5£679

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 20 May 2026.

Return from

£585

One-way from

£360

Popular in

December

Cheapest in

September

Average price

£751
Etihad Airways
  • Etihad Airways
  • 14/6-21/6
  • 4 total stops
  • 70h 50m total
  • London to Siem Reap
Search Deals
Etihad Airways
  • Etihad Airways
  • 26/6
  • 2 total stops
  • 41h 30m total
  • London to Siem Reap
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£74 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 May 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 20 May 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

LGW - SAI

LGWSAI

London Gatwick

Tue 10/11

10:30-21:00

2 stops51h 30m

Siem Reap–Angkor Intl

Sat 28/11

22:00-06:30

3 stops39h 30m

£614

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sun 15/11

17:00-21:00

3 stops45h 00m

Siem Reap–Angkor Intl

Sat 28/11

22:00-06:30

2 stops39h 30m

£671

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Sun 21/6

08:45-18:55

2 stops28h 10m

Siem Reap–Angkor Intl

Mon 29/6

09:40-07:55

2 stops28h 15m

£679

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sun 21/6

09:05-18:55

2 stops27h 50m

Siem Reap–Angkor Intl

Sun 28/6

09:40-08:25

2 stops28h 45m

£711

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Thu 24/9

09:25-18:55

2 stops27h 30m

Siem Reap–Angkor Intl

Thu 15/10

09:40-08:25

2 stops28h 45m

£711

LondonSiem Reap

LGW - SAI

LGWSAI

London Gatwick

Sun 21/6

09:05-18:55

2 stops27h 50m

Siem Reap–Angkor Intl

Mon 29/6

09:40-08:25

2 stops28h 45m

£718

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Tue 10/11

21:00-21:00

2 stops41h 00m

Siem Reap–Angkor Intl

Sat 5/12

22:00-17:30

2 stops50h 30m

£743

LondonSiem Reap

LHR - SAI

LHRSAI

London Heathrow

Mon 29/6

21:45-11:15

2 stops31h 30m

Siem Reap–Angkor Intl

Mon 20/7

19:35-15:05

2 stops25h 30m

£754

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Mon 16/11

14:05-21:10

2 stops24h 05m

Siem Reap–Angkor Intl

Mon 30/11

13:20-12:05

2 stops29h 45m

£756

LondonSiem Reap

STN - SAI

STNSAI

London Stansted

Sun 15/11

20:15-21:10

2 stops41h 55m

Siem Reap–Angkor Intl

Mon 30/11

13:20-12:05

2 stops29h 45m

£765

Flights are sorted by cheapest return flights first.

Deals found on 17/5

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
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 20 hours 21 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 £664
Vietnam Airlines
Vietnam Airlines
From £621
Emirates
Emirates
From £751
Thai Airways
Thai Airways
From £861

What are the cheapest airlines that fly to Siem Reap?

The cheapest airlines flying from London to Siem Reap are Austrian Airlines, Lufthansa and Vietnam 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 20 May 2026.
Get a feel of what it's like to fly with Singapore Airlines,Emirates, andThai Airways 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
1,521 reviews
Check prices

Boarding

8.3

Food

7.8

Crew

8.6

Overall

8.2

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.
Singapore Airlines
8.2
Very Good
1,521 reviews
Singapore Airlines
8.2
Very Good
1,521 reviews
Check prices

Boarding

8.3

Food

7.8

Crew

8.6

Overall

8.2

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.
Emirates
8.1
Very Good
3,574 reviews
Singapore Airlines
8.2
Very Good
1,521 reviews
Check prices

Boarding

8.3

Food

7.8

Crew

8.6

Overall

8.2

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.
Thai Airways
7.9
Good
402 reviews
Singapore Airlines
8.2
Very Good
1,521 reviews
Check prices

Boarding

8.3

Food

7.8

Crew

8.6

Overall

8.2

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.
Vietnam Airlines
7.7
Good
270 reviews
Singapore Airlines
8.2
Very Good
1,521 reviews
Check prices

Boarding

8.3

Food

7.8

Crew

8.6

Overall

8.2

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.
British Airways
6.7
Okay
7,990 reviews
Singapore Airlines
8.2
Very Good
1,521 reviews
Check prices

Boarding

8.3

Food

7.8

Crew

8.6

Overall

8.2

Comfort

8.0

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Wee Keng,May 2026

SIN - MNL

Was upgraded to Premium Economy seat as PPS member. SQ steward team prepared birthday cake for a colleague which I requested and didn’t follow up. Great service and a great way to fly.

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, Austrian Airlines 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 £62, while return flights cost around £123.

  • How much is a return flight to Siem Reap?

    A return flight to Siem Reap will typically cost around £142, however they can be found for as little as £123.

  • 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 (17 hours 25 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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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.

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