CNX - USM

$154 Find Cheap Flights from Chiang Mai to Ko Samui - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$234
Typical prices: $382-$480
Bangkok Airways
Mon 4/23Sun 5/6
CNX - USM • 1 stop
Cheapest non-stop
$283
Typical prices: $393-$477
Bangkok Airways
Wed 11/14Thu 11/15
CNX - USM • Non-stop
Nonstop flights
You can fly direct with Bangkok Airways. Average duration is 1h 46m
Direct flights
+1
Direct flights
+1
Avoid delays
Most punctual • 94% on-time
Best time • Fewest delays
Insights
Insights
When to travel
Cheapest • 61% price drop
Most popular
Good to know
+1
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ko Samui!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Chiang Mai to Ko Samui (CNX-USM)

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

Recent round-trip flight deals from Chiang Mai to Ko Samui

Fri, Apr 23 - Thu, May 6
Bangkok Airways Logo
2:35 pm - 6:30 pmCNX  Chiang Mai-USM Ko Samui
3h 55m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
8:55 am - 10:40 amUSM  Ko Samui-CNX Chiang Mai
1h 45mnonstop
$234Bangkok Airways
Tue, Feb 16 - Tue, Mar 2
Multiple Airlines Logo
8:40 pm - 7:10 amCNX  Chiang Mai-USM Ko Samui
10h 30m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
8:50 am - 10:40 amUSM  Ko Samui-CNX Chiang Mai
1h 50mnonstop
$253Multiple Airlines
Sat, Nov 14 - Sun, Nov 15
Bangkok Airways Logo
11:30 am - 1:15 pmCNX  Chiang Mai-USM Ko Samui
1h 45mnonstop
Bangkok Airways Logo
8:50 am - 10:40 amUSM  Ko Samui-CNX Chiang Mai
1h 50mnonstop
$283Bangkok Airways
Wed, Dec 9 - Wed, Dec 16
Multiple Airlines Logo
8:55 am - 9:20 pmCNX  Chiang Mai-USM Ko Samui
12h 25m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
8:50 am - 10:40 amUSM  Ko Samui-CNX Chiang Mai
1h 50mnonstop
$283Multiple Airlines
Wed, Apr 21 - Sat, May 8
Bangkok Airways Logo
8:00 pm - 8:15 amCNX  Chiang Mai-USM Ko Samui
12h 15m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
8:55 am - 10:40 amUSM  Ko Samui-CNX Chiang Mai
1h 45mnonstop
$286Bangkok Airways
Wed, Apr 21 - Sun, May 9
Bangkok Airways Logo
8:00 pm - 7:35 amCNX  Chiang Mai-USM Ko Samui
11h 35m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
8:55 am - 10:40 amUSM  Ko Samui-CNX Chiang Mai
1h 45mnonstop
$286Bangkok Airways
Tue, Apr 20 - Wed, May 5
Bangkok Airways Logo
8:00 pm - 7:10 amCNX  Chiang Mai-USM Ko Samui
11h 10m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
8:55 am - 10:40 amUSM  Ko Samui-CNX Chiang Mai
1h 45mnonstop
$286Bangkok Airways
Wed, Apr 21 - Thu, May 6
Bangkok Airways Logo
8:00 pm - 7:35 amCNX  Chiang Mai-USM Ko Samui
11h 35m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
8:55 am - 10:40 amUSM  Ko Samui-CNX Chiang Mai
1h 45mnonstop
$286Bangkok Airways
Tue, Apr 20 - Fri, May 7
Bangkok Airways Logo
8:00 pm - 7:10 amCNX  Chiang Mai-USM Ko Samui
11h 10m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
8:55 am - 10:40 amUSM  Ko Samui-CNX Chiang Mai
1h 45mnonstop
$286Bangkok Airways
Tue, Apr 20 - Sat, May 8
Bangkok Airways Logo
8:00 pm - 7:10 amCNX  Chiang Mai-USM Ko Samui
11h 10m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
8:55 am - 10:40 amUSM  Ko Samui-CNX Chiang Mai
1h 45mnonstop
$286Bangkok Airways
Booking Insights

Price, demand and travel trends for Chiang Mai 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 Chiang Mai to Ko Samui?

Round-trip flights from Chiang Mai to Ko Samui typically range from $382 to $480. The lowest price found in the past 5 days was $234, on Bangkok Airways.

What's the cheapest day of the week to fly from Chiang Mai to Ko Samui?

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Chiang Mai to Ko Samui. It’s 18% cheaper than the average day, while Saturday is the most expensive, with prices 6% higher.

What’s the cheapest month to fly from Chiang Mai to Ko Samui?

•September is the cheapest month to fly from Chiang Mai to Ko Samui at $172 round-trip.
•August ($568) and February ($530) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 230% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

Key details for Chiang Mai to Ko Samui flights

Low season

May

Cheapest flight

$154
Beat the crowds with an average 66% drop in travelers.
The most popular month to fly with an average 97% increase in travelers.
One-way flight from Chiang Mai to Ko Samui

When to book flights from Chiang Mai to Ko Samui

Are your dates flexible? Find out the best times to travel from Chiang Mai 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 Chiang Mai to Ko Samui flight questions, answered

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

  • What are the earliest and latest flights from Chiang Mai to Ko Samui?

    These are the earliest and latest flight times available from Chiang Mai to Ko Samui:

    • Earliest: departs at 11:30 am and lands at 1:16 pm
    • Latest: departs at 3:10 pm and lands at 4:56 pm.

    The flight takes about 1h 46m.

  • What cabin classes can I book on flights from Chiang Mai to Ko Samui?

    Only Economy Class is available on flights from Chiang Mai to Ko Samui.

  • How long is a flight from Chiang Mai to Ko Samui?

    A nonstop flight from Chiang Mai to Ko Samui takes 1h 46m, covering 641 miles.

  • Do I need a passport to fly from Chiang Mai to Ko Samui?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a Chiang Mai to Ko Samui flight?

    Round-trip flights from Chiang Mai to Ko Samui range from $382 to $480, with an average of $440 over the past 12 months. Anything below $382 counts as a good deal.

  • How much can I save by taking a layover when flying from Chiang Mai to Ko Samui?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $385 round-trip via Bangkok Suvarnabhumi (BKK), compared to $431 for nonstop.

  • How does on-time performance compare across airlines flying from Chiang Mai to Ko Samui?

    Bangkok Airways is the only airline operating Chiang Mai to Ko Samui flights. 94% of its flights are on time.

  • How are flight departures from Chiang Mai to Ko Samui spread across the day?

    Morning is the busiest departure period on Chiang Mai to Ko Samui flights, with 100% of flights leaving in that window. Afternoon departures account for 0%, evening flights for 0%, and night flights for 0%.

  • Have flight prices from Chiang Mai 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 $234 to $719. That means the highest observed fare was about 3x higher than the lowest one.

  • How are flight prices from Chiang Mai to Ko Samui looking right now?

    One-way fares from Chiang Mai to Ko Samui are currently lower than usual. Average one-way flight prices are about $160, which is 41% below the typical average for this route.

  • 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 Chiang Mai to Ko Samui?

    Flights from Chiang Mai to Ko Samui usually depart from Chiang Mai (CNX) and arrive at Ko Samui (USM).

  • What time of day has the fewest delays on flights from Chiang Mai to Ko Samui?

    Morning flights have the fewest delays on this route, while afternoon departures tend to have the most.

  • At what point is a flight considered delayed from Chiang Mai to Ko Samui?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Chiang Mai to Ko Samui route, 6% of flights were delayed in the past 3 months, with delays averaging 1h 55m.

  • Which airports do connecting flights from Chiang Mai to Ko Samui pass through?

    Most connecting flights from Chiang Mai 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 Chiang Mai to Ko Samui?

    Yes. Flexible dates can save you up to 23% on flights from Chiang Mai to Ko Samui. Tuesday is the cheapest departure day at $365 round-trip on average, while Saturday is the most expensive at $470, a difference of $105.

    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 airlines fly from Chiang Mai to Ko Samui?

    Only Bangkok Airways operates flights between Chiang Mai and Ko Samui.

  • 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.

  • Which airlines include bags at no extra cost on Chiang Mai to Ko Samui flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Bangkok Airways: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

  • Does Samui International Airport have an airline lounge?

    USM has the Blue-Ribbon Club Lounge in the International Terminal near gate 6 and the Domestic Terminal between gates 2 and 3. Consider flying Business Class on Bangkok Airways to gain access to the lounge. You can use a lounge membership program, or prepaid lounge passes to access the lounge. Enjoy this lounge's comfortable and quiet environment with complimentary food and beverages and shower facilities.

  • Which airline flies sustainably from Chiang Mai to Koh Samui?

    On average, a passenger flying on this route emits about 696 lbs of carbon. When plying the route, you can have eco-friendlier travel using environmentally sustainable flights by Nok Air, Bangkok Airways, Thai AirAsia, and Thai Vietjet Air. Consider flying Nok Air and Bangkok Airways, which have fewer carbon emissions by 48%. Eco-friendly airlines flying the route use fuel-efficient planes to reduce carbon emissions.

  • Which layover options do I have from Chiang Mai to Koh Samui?

    You can have direct or layover flights on this route. Many airlines offer single and multiple stopovers if you want to fly connecting flights on this route. Your layover city will depend on the number of layovers you want and the airline you fly on the route. Some of the common cities for single layover flights plying the route include Bangkok at BKK and DMK and Phunet City at HKT. The airlines offering single layover travel on this route include Multiple Airlines, Bangkok Airways, and Thai AirAsia.

  • Which airline flying to Koh Samui from Chiang Mai has a favorable pet policy?

    If you are flying on this route with your pet, book an airline that allows your pet to travel in the cabin or as checked cargo. Bangkok Airways allows passengers to have pets in a cabin at an extra charge. However, your pet must weigh at most 15 lbs as the combined weight with its carrier. The dimensions of your pet carrier must be at most 18 by 11 by 9 inches.

Your guide to booking Chiang Mai 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 Tuesday departure and avoid flying on Saturday. On this route, Tuesday flights average $365, about $105 less than Saturday fares (22% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Chiang Mai to Ko Samui trip for September. Fares historically average $172 round-trip in that month - typically $396 less than the most expensive month, which is August (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Bangkok Suvarnabhumi Airport (BKK) can be cheaper than flying direct. The cheapest layover option averages $385 round-trip on this route - about $46 less than direct flights (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
  • Chiang Mai International Airport (CNX) is the primary airport serving the city of Chiang Mai. The airport handles domestic and international travel to and from Chiang Mai. CNX is the main airport for nearby towns, including Lamphun and Sansai.
  • Samui International Airport (USM) is the only one serving the island and has a limited number of airlines offering travel to and from the airport. Therefore, when flying to Koh Samui USM, consider flying Business Class on Bangkok Airways, which offers exclusive fast-track services to business class travelers.
  • If you are a frequent flyer on Bangkok Airways, the airline offers various exclusive privileges for frequent flyers through its FlyerBonus program. The program has multiple benefits, including priority services, additional baggage allowance, and premium access to Koh Samui Airport's lounge.
  • Bangkok Airways offers a seat selection option to passengers where you can select and reserve a seat subject to availability. You can choose a seat based on your preferences, such as aisle seats, window seats, and seats with extra legroom.
  • If you want to upgrade your seat or ticket, consider flying Bangkok Airways, which allows passengers to upgrade from Economy Class to Business Class if the class of service you are upgrading to has available seats. Upgrading your class of service will cost an additional fee however will be cheaper than initially purchasing a Business Class ticket.

Prefer to fly direct from Chiang Mai to Ko Samui?

 
Find which airlines fly direct from Chiang Mai Airport to Ko Samui Airport, which days they fly and book direct flights.

Direct departures

Chiang Mai to Ko Samui

Monday

Bangkok Airways

Bangkok Airways

Tuesday

Bangkok Airways

Bangkok Airways

Wednesday

Bangkok Airways

Bangkok Airways

Thursday

Bangkok Airways

Bangkok Airways

Friday

Bangkok Airways

Bangkok Airways

Saturday

Bangkok Airways

Bangkok Airways

Sunday

Bangkok Airways

Bangkok Airways

See more direct flights

Direct returns

Ko Samui to Chiang Mai

Monday

Bangkok Airways

Bangkok Airways

Tuesday

Bangkok Airways

Bangkok Airways

Wednesday

Bangkok Airways

Bangkok Airways

Thursday

Bangkok Airways

Bangkok Airways

Friday

Bangkok Airways

Bangkok Airways

Saturday

Bangkok Airways

Bangkok Airways

Sunday

Bangkok Airways

Bangkok Airways

See more direct flights

More options for your flight from Chiang Mai to Ko Samui

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