CNX - USM

$180 Find Cheap Flights from Chiang Mai to Ko Samui - Compare and Save

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Everything you should know

Cheapest round-trip
$208
Typical prices: $356-$476
Multiple Airlines
Mon 10/29Fri 11/2
CNX - USM • 1 stop
Cheapest non-stop
$217
Typical prices: $397-$479
Bangkok Airways
Mon 10/29Fri 11/2
CNX - USM • Non-stop
Nonstop flights
You can fly direct with Bangkok Airways. Average duration is 1h 45m
Direct flights
+1
Direct flights
+1
Avoid delays
Most punctual • 94% on-time
Best time • Fewest delays
Insights
Insights
When to travel
Cheapest • 38% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $341 (round-trip)
Shortest trip • 6h 50m (one-way)
Insights
Insights
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We hope you love your trip to Ko Samui!
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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

Thu, Oct 29 - Mon, Nov 2
Multiple Airlines Logo
10:30 pm - 7:35 amCNX  Chiang Mai-USM Ko Samui
9h 05m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
8:50 am - 10:40 amUSM  Ko Samui-CNX Chiang Mai
1h 50mnonstop
$208Multiple Airlines
Thu, Oct 29 - Sun, Nov 1
Multiple Airlines Logo
6:35 am - 10:35 amCNX  Chiang Mai-USM Ko Samui
4h 00m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
8:50 am - 10:40 amUSM  Ko Samui-CNX Chiang Mai
1h 50mnonstop
$209Multiple Airlines
Thu, Oct 29 - Mon, Nov 2
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
$217Bangkok Airways
Thu, Oct 29 - Sun, Nov 1
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
$218Bangkok Airways
Fri, Oct 23 - Fri, Oct 30
Multiple Airlines Logo
10:30 pm - 7:10 amCNX  Chiang Mai-USM Ko Samui
8h 40m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
8:50 am - 10:40 amUSM  Ko Samui-CNX Chiang Mai
1h 50mnonstop
$219Multiple Airlines
Fri, Oct 23 - Fri, Oct 30
Multiple Airlines Logo
10:30 pm - 7:10 amCNX  Chiang Mai-USM Ko Samui
8h 40m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
8:50 am - 10:40 amUSM  Ko Samui-CNX Chiang Mai
1h 50mnonstop
$225Multiple Airlines
Thu, Oct 29 - Mon, Nov 2
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
$227Bangkok Airways
Mon, Oct 12 - Mon, Oct 19
Multiple Airlines Logo
10:30 pm - 7:10 amCNX  Chiang Mai-USM Ko Samui
8h 40m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
8:55 am - 10:40 amUSM  Ko Samui-CNX Chiang Mai
1h 45mnonstop
$231Multiple Airlines
Thu, Oct 29 - Sun, Nov 1
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
$239Bangkok Airways
Thu, Oct 29 - Sun, Nov 1
Bangkok Airways Logo
7:45 pm - 7:10 amCNX  Chiang Mai-USM Ko Samui
11h 25m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
8:50 am - 10:40 amUSM  Ko Samui-CNX Chiang Mai
1h 50mnonstop
$243Bangkok 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 from Chiang Mai to Ko Samui with more confidence.

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

Tuesday is the cheapest day of the week to fly from Chiang Mai to Ko Samui, it is 16% cheaper than the average day. Saturday is the most expensive day with flight prices 8% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is 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 $271 round-trip.
  • February ($584) and December ($549) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 115% 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

$179
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly with an average 35% increase in price.
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 route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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.

  • What airlines are available from Chiang Mai to Ko Samui?

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

  • 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).

  • 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 travelers should check the fare details before booking.

  • 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 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 $341 round-trip via Bangkok Don Mueang Intl (DMK), compared to $429 for nonstop.

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

    Connecting flights from Chiang Mai to Ko Samui most commonly pass through:

    • Bangkok Suvarnabhumi (BKK) - 89% of one-stop connections
    • Bangkok Don Mueang Intl (DMK) - 11% of one-stop connections
    Together, these airports account for 100% of one-stop bookings on this route.

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

    Yes. Being flexible with your travel dates can save you up to 23% on the Chiang Mai to Ko Samui route. 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.

  • 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 1 hour 54 minutes.

  • 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%.

  • What popular places can I visit in Ko Samui?

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

  • 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 1:15 pm
    • Latest: departs at 12:05 pm and lands at 1:50 pm.

    The flight takes about 1h 45m.

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

    A nonstop flight from Chiang Mai to Ko Samui takes 1h 45m, 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.

  • 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 $208 to $675. 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 $181, which is 32% below the typical average for this route.

  • How does Bangkok Airways’s on-time performance compare to other airlines on Chiang Mai to Ko Samui flights?

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

  • How do delay rates compare for morning and evening flights from Chiang Mai to Ko Samui?

    Evening flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

  • How much time can I save by choosing a different layover airport from Chiang Mai to Ko Samui?

    Flying via Bangkok Don Mueang Intl (DMK) gives the shortest average 1-stop total travel time at 4h 29m, compared with 6h 50m via Bangkok Suvarnabhumi (BKK).

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

    Ko Samui Airport (USM) hosts 5 major car rental companies, with daily rates starting from around $14 for economy cars. Top options include:
    • Drive Car Rental
    • Alamo
    • Sixt
    • Enterprise Rent-A-Car
    • Hertz

  • 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 $356 to $476, with an average of $434 over the past 12 months. Anything below $356 counts as a good deal.

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 can be flexible, aim for a Tuesday departure instead of Saturday. On this route, Tuesday flights average $365 - about $105 less than Saturday (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 $271 round-trip in that month - typically $313 less than the most expensive month, which is February (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Bangkok Don Mueang Intl Airport (DMK) can be cheaper than flying direct. The cheapest layover option averages $341 round-trip on this route - about $88 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
    - Amari Koh Samui
    - Cosi Samui Chaweng Beach
  • 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