KTI - USM

$154 Find Cheap Flights from Phnom Penh to Ko Samui - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$413
Typical prices: $522-$713
Bangkok Airways
Thu 11/29Mon 12/3
KTI - USM • 1 stop
Cheapest one-way
$157
Typical prices: $256-$292
Multiple Airlines
Tue 11/13
KTI - USM • 1 stop
When to travel
May
Cheapest • 19% price drop
July
Most popular
Good to know
+1
Good to know
+1
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Booking Insights
Flight Deals

Cheap Flights from Phnom Penh to Ko Samui (KTI-USM)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Phnom Penh to Ko Samui

Sun, Nov 29 - Thu, Dec 3
Bangkok Airways Logo
7:35 pm - 7:10 amKTI  Phnom Penh Techo Intl-USM Ko Samui
11h 35m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
8:40 am - 7:25 pmUSM  Ko Samui-KTI Phnom Penh Techo Intl
10h 45m1 stop Bangkok Suvarnabhumi
$413Bangkok Airways
Wed, Jan 20 - Sat, Jan 23
Multiple Airlines Logo
7:55 pm - 12:20 pmKTI  Phnom Penh Techo Intl-USM Ko Samui
16h 25m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
2:05 pm - 7:00 pmUSM  Ko Samui-KTI Phnom Penh Techo Intl
4h 55m1 stop Bangkok Suvarnabhumi
$427Multiple Airlines
Wed, Jan 20 - Fri, Jan 22
Multiple Airlines Logo
7:55 pm - 12:20 pmKTI  Phnom Penh Techo Intl-USM Ko Samui
16h 25m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
2:05 pm - 7:00 pmUSM  Ko Samui-KTI Phnom Penh Techo Intl
4h 55m1 stop Bangkok Suvarnabhumi
$433Multiple Airlines
Wed, Jan 20 - Thu, Jan 21
Multiple Airlines Logo
10:35 am - 8:25 pmKTI  Phnom Penh Techo Intl-USM Ko Samui
9h 50m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
7:15 am - 7:00 pmUSM  Ko Samui-KTI Phnom Penh Techo Intl
11h 45m1 stop Bangkok Suvarnabhumi
$444Multiple Airlines
Wed, Jan 20 - Wed, Jan 20
Singapore Airlines Logo
9:35 am - 5:10 pmKTI  Phnom Penh Techo Intl-USM Ko Samui
7h 35m1 stop Singapore Changi
Singapore Airlines Logo
7:50 pm - 8:35 amUSM  Ko Samui-KTI Phnom Penh Techo Intl
12h 45m1 stop Singapore Changi
$771Singapore Airlines
Wed, Jan 20 - Thu, Jan 21
Multiple Airlines Logo
11:10 am - 6:55 amKTI  Phnom Penh Techo Intl-USM Ko Samui
19h 45m2 stops Kuala Lumpur Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
3:35 pm - 10:00 amUSM  Ko Samui-KTI Phnom Penh Techo Intl
18h 25m2 stops Bangkok Suvarnabhumi Kuala Lumpur Intl
$813Multiple Airlines
Wed, Jan 20 - Thu, Jan 21
Multiple Airlines Logo
11:10 am - 8:25 pmKTI  Phnom Penh Techo Intl-USM Ko Samui
9h 15m2 stops Kuala Lumpur Intl Bangkok Suvarnabhumi
Multiple Airlines Logo
9:30 pm - 8:45 amUSM  Ko Samui-KTI Phnom Penh Techo Intl
11h 15m1 stop Bangkok Suvarnabhumi
$866Multiple Airlines
Wed, Jan 20 - Sat, Jan 23
Malaysia Airlines Logo
11:10 am - 8:05 amKTI  Phnom Penh Techo Intl-USM Ko Samui
20h 55m2 stops Kuala Lumpur Intl Bangkok Suvarnabhumi
Malaysia Airlines Logo
8:15 am - 10:00 amUSM  Ko Samui-KTI Phnom Penh Techo Intl
25h 45m2 stops Phuket City Kuala Lumpur Intl
$938Malaysia Airlines
Mon, Jan 4 - Sat, Jan 9
Malaysia Airlines Logo
11:10 am - 8:10 amKTI  Phnom Penh Techo Intl-USM Ko Samui
21h 00m2 stops Kuala Lumpur Intl Bangkok Suvarnabhumi
Malaysia Airlines Logo
3:50 pm - 10:00 amUSM  Ko Samui-KTI Phnom Penh Techo Intl
18h 10m2 stops Phuket City Kuala Lumpur Intl
$949Malaysia Airlines
Sat, Jan 2 - Sun, Jan 10
Malaysia Airlines Logo
11:10 am - 8:50 pmKTI  Phnom Penh Techo Intl-USM Ko Samui
9h 40m2 stops Kuala Lumpur Intl Phuket City
Malaysia Airlines Logo
3:50 pm - 10:00 amUSM  Ko Samui-KTI Phnom Penh Techo Intl
18h 10m2 stops Phuket City Kuala Lumpur Intl
$1,075Malaysia Airlines
Booking Insights

Price, demand and travel trends for Phnom Penh to Ko Samui flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Phnom Penh to Ko Samui?

Round-trip flights from Phnom Penh to Ko Samui typically range from $522 to $713. The lowest price found in the past 5 days was $413, on Bangkok Airways.

Find deals

Key details for Phnom Penh to Ko Samui flights

Low season

January

Cheapest flight

$157
Beat the crowds with an average 91% drop in travelers.
One-way flight from Phnom Penh to Ko Samui

When to book flights from Phnom Penh to Ko Samui

Are your dates flexible? Find out the best times to travel from Phnom Penh to Ko Samui based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Phnom Penh to Ko Samui flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from Phnom Penh to Ko Samui?

    Only Economy Class is available on flights from Phnom Penh to Ko Samui.

  • Do I need a passport to fly from Phnom Penh to Ko Samui?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Phnom Penh to Ko Samui flight?

    Round-trip flights from Phnom Penh to Ko Samui range from $522 to $713, with an average of $597 over the past 12 months. Anything below $522 counts as a good deal.

  • Have flight prices from Phnom Penh to Ko Samui changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $413 to $2,183. That means the highest observed fare was about 5x higher than the lowest one.

  • How are flight prices from Phnom Penh to Ko Samui looking right now?

    One-way fares from Phnom Penh to Ko Samui are currently in line with typical prices for this route. Average one-way fares are about $271.

  • What car rental options are available at Ko Samui Airport (USM)?

    Ko Samui Airport (USM) hosts 5 major car rental companies, with daily rates averaging $29 for economy cars. Top options include:

    • Drive Car Rental
    • Alamo
    • Sixt
    • Enterprise Rent-A-Car
    • Thai Rent

  • Which airports can I use when flying from Phnom Penh to Ko Samui?

    Flights from Phnom Penh to Ko Samui usually depart from Phnom Penh Techo Intl (KTI) and arrive at Ko Samui (USM).

  • Which airports do connecting flights from Phnom Penh to Ko Samui pass through?

    Most connecting flights from Phnom Penh to Ko Samui pass through Bangkok Suvarnabhumi (BKK), which handles 100% of one-stop traffic on this route.

  • Can I save money by using flexible dates for flights from Phnom Penh to Ko Samui?

    Yes. Flexible dates can save you up to 52% on flights from Phnom Penh to Ko Samui. Friday is the cheapest departure day at $348 round-trip on average, while Sunday is the most expensive at $713, a difference of $365.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in Ko Samui?

    Some of the most popular sights in Ko Samui are Lamai Beach, Chaweng Beach and Choeng Mon Beach. These are among the most viewed places in Ko Samui on KAYAK.

Your guide to booking Phnom Penh to Ko Samui flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Friday departure and avoid flying on Sunday. On this route, Friday flights average $348, about $365 less than Sunday fares (51% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Phnom Penh to Ko Samui trip for May. Fares historically average $486 round-trip in that month - typically $251 less than the most expensive month, which is March (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Ko Samui Airport.

    • Ozo Chaweng Samui - Sha Extra Plus
    • Melia Koh Samui
    • Amari Koh Samui

More options for your flight from Phnom Penh to Ko Samui

Complete your trip to Ko Samui with a hotel stay or car rental

Car rentals in Ko Samui
Hotels in Ko Samui
Vacations in Ko Samui