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Cheap flights from Ko Samui to Phnom Penh from ฿4,377

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 13/7. Fares are subject to change and may not be available on all flights or dates of travel.
USM — PNH
15 Jun — 22 Jun1
1 adult

Cheap flight deals from Ko Samui to Phnom Penh

Discover tips and strategies to find the most affordable flight options for your journey from Ko Samui (USM) to Phnom Penh (PNH). 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 10 June 2025.

Round-trip from

฿13,883

One-way from

฿4,377
25/7-1/8
  • 25/7-1/8
  • 3 total stops
  • 49h 55m total
  • Ko Samui to Phnom Penh
Search Deals
13/7
  • 13/7
  • 1 total stop
  • 9h 20m total
  • Ko Samui to Phnom Penh
Search Deals

Find flight deals from Ko Samui to Phnom Penh

Cheapest flights from Ko Samui to Phnom Penh
Explore the most affordable flight options available from Ko Samui to Phnom Penh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 June 2025.

Sun 15/607:00USM - PNH
1 stop11h 15mMultiple Airlines
Mon 16/619:10PNH - USM
1 stop13h 05mMultiple Airlines
Deal found 8/6฿10,845
Wed 11/608:00USM - PNH
2 stops8h 55mVietnam Airlines
Wed 18/614:10PNH - USM
2 stops7h 25mVietnam Airlines
Deal found 10/6฿30,706

Cheapflights Fare Finder

Customise your flight search to find flights from Ko Samui to Phnom Penh 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 17,341 searches. Data last updated 10 June 2025.
Use the filters below to find and compare flights from Ko Samui to Phnom Penh that are best for you.

Fly from

Ko Samui

Fly to

Phnom Penh

Route

Depart

Return

Price

Ko SamuiPhnom Penh

USM - PNH

USMPNH

Ko Samui

Fri 25/7

11:25-14:20

2 stops26h 55m

Phnom Penh Pochentong

Fri 1/8

18:45-17:45

1 stop23h 00m

฿13,883

Ko SamuiPhnom Penh

USM - PNH

USMPNH

Ko Samui

Fri 25/7

19:30-13:00

3 stops17h 30m

Phnom Penh Pochentong

Fri 1/8

16:40-18:15

2 stops25h 35m

฿37,566

Ko SamuiPhnom Penh

USM - PNH

USMPNH

Ko Samui

Sun 13/7

07:00-16:20

1 stop9h 20m

฿4,377

Ko SamuiPhnom Penh

USM - PNH

USMPNH

Ko Samui

Sat 8/11

07:00-14:25

1 stop7h 25m

฿5,455

Ko SamuiPhnom Penh

USM - PNH

USMPNH

Ko Samui

Mon 7/7

08:00-13:00

3 stops29h 00m

฿19,044

Flights are sorted by cheapest return flights first.

Deals found on 10/6

Best time to book a flight from Ko Samui to Phnom Penh

Have a flexible travel schedule? Discover the best time to fly to Phnom Penh from Ko Samui 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 from Ko Samui to Phnom Penh

Rainfall in Phnom Penh by month

Plan your trip to Phnom Penh by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Phnom Penh ranges from 0.0 - 250.0 inches per month. October is typically the wettest month, when rainfall can reach 250.0 mm. January is typically the driest time to visit Phnom Penh when rainfall is around 0.0 mm.

Temperature in Phnom Penh by month

Plan your trip to Phnom Penh by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Phnom Penh, 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 25.0 C).

Reviews of airlines servicing Phnom Penh

Get insights into the airlines that provide service to Phnom Penh. 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 Phnom Penh. Reviews last updated 10 June 2025.
Bangkok Airways
8.0
Very Good
111 reviews
Check prices

Overall

8.0

Food

7.2

Entertainment

6.2

Comfort

7.8

Crew

8.5

Boarding

7.9

Reviews

1 / 7
10.0
Excellent

Douglas,May 2025

USM - HKG

Flight was as expected: up and down at the right time and location without drama. Kayak needs to modify this survey to allow for “N/A.” For example, we didn’t use the entertainment system but are forced to rate it. In this case, the results are skewed and may lead to incorrect assumptions.
Bangkok Airways
8.0
Very Good
111 reviews
Bangkok Airways
8.0
Very Good
111 reviews
Check prices

Overall

8.0

Food

7.2

Entertainment

6.2

Comfort

7.8

Crew

8.5

Boarding

7.9

Reviews

1 / 7
10.0
Excellent

Douglas,May 2025

USM - HKG

Flight was as expected: up and down at the right time and location without drama. Kayak needs to modify this survey to allow for “N/A.” For example, we didn’t use the entertainment system but are forced to rate it. In this case, the results are skewed and may lead to incorrect assumptions.
Vietnam Airlines
7.5
Good
193 reviews
Bangkok Airways
8.0
Very Good
111 reviews
Check prices

Overall

8.0

Food

7.2

Entertainment

6.2

Comfort

7.8

Crew

8.5

Boarding

7.9

Reviews

1 / 7
10.0
Excellent

Douglas,May 2025

USM - HKG

Flight was as expected: up and down at the right time and location without drama. Kayak needs to modify this survey to allow for “N/A.” For example, we didn’t use the entertainment system but are forced to rate it. In this case, the results are skewed and may lead to incorrect assumptions.

Related info for your journey

Find useful and relevant information for your journey from Ko Samui to Phnom Penh. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Ko Samui to Phnom Penh round-trip?

    Vietnam Airlines, at ฿37,566, was found to be the cheapest airline from Ko Samui to Phnom Penh..

  • Can I find deals for flights from Ko Samui to Phnom Penh that include hotel bookings?

    Yes. In addition to deals on Ko Samui to Phnom Penh flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Ko Samui to Phnom Penh?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ko Samui to Phnom Penh.

  • Can I find deals for business class flights from Ko Samui to Phnom Penh?

    Yes. Cheapflights offers flight deals from Ko Samui to Phnom Penh 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 Ko Samui to Phnom Penh?

    Currently, May is the cheapest month in which you can book a flight from Ko Samui to Phnom Penh (average of ฿109). Flying from Ko Samui to Phnom Penh in October is currently the most expensive (average of ฿145). 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

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

Alternative routes for Ko Samui to Phnom Penh

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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How does Cheapflights help users find flights from Ko Samui to Phnom Penh?

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Why should you use Cheapflights to find cheap flight tickets from Ko Samui to Phnom Penh?

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Can Cheapflights find flights from Ko Samui to Phnom Penh with no change fees?

Yes! Cheapflights helps users easily find flights from Ko Samui to Phnom Penh with no change fees.

Can Cheapflights notify me if prices for flights from Ko Samui to Phnom Penh become cheaper?

Yes, Cheapflights offers price alerts on Ko Samui to Phnom Penh 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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