CNX - USM

C$ 223 Find Cheap Flights from Chiang Mai to Ko Samui – Compare and Save

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Everything you should know

Cheapest round-trip
C$ 402
Typical prices: C$ 535-C$ 672
Bangkok Airways
Thu 22/3Thu 5/4
CNX - USM • 1 stop
Cheapest direct flights
C$ 531
Typical prices: C$ 550-C$ 668
Bangkok Airways
Sat 17/11Fri 30/11
CNX - USM • Direct
Direct 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
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We hope you enjoy 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

Mon, 22 Mar - Sun, 4 Apr
Bangkok Airways Logo
7:45 p.m. - 7:10 a.m.CNX  Chiang Mai-USM Ko Samui
11h 25m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
8:55 a.m. - 10:40 a.m.USM  Ko Samui-CNX Chiang Mai
1h 45mdirect
C$ 402Bangkok Airways
3+ days ago
Mon, 22 Mar - Fri, 2 Apr
Bangkok Airways Logo
7:45 p.m. - 7:10 a.m.CNX  Chiang Mai-USM Ko Samui
11h 25m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
8:55 a.m. - 10:40 a.m.USM  Ko Samui-CNX Chiang Mai
1h 45mdirect
C$ 427Bangkok Airways
3+ days ago
Sat, 21 Nov - Sat, 28 Nov
Bangkok Airways Logo
7:45 p.m. - 10:35 a.m.CNX  Chiang Mai-USM Ko Samui
14h 50m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
8:50 a.m. - 10:40 a.m.USM  Ko Samui-CNX Chiang Mai
1h 50mdirect
C$ 443Bangkok Airways
2 days ago
Mon, 22 Mar - Wed, 31 Mar
Bangkok Airways Logo
7:45 p.m. - 7:10 a.m.CNX  Chiang Mai-USM Ko Samui
11h 25m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
7:50 a.m. - 7:10 p.m.USM  Ko Samui-CNX Chiang Mai
11h 20m1 stop Bangkok Suvarnabhumi
C$ 455Bangkok Airways
3+ days ago
Mon, 22 Mar - Tue, 6 Apr
Bangkok Airways Logo
7:45 p.m. - 7:10 a.m.CNX  Chiang Mai-USM Ko Samui
11h 25m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
8:55 a.m. - 10:40 a.m.USM  Ko Samui-CNX Chiang Mai
1h 45mdirect
C$ 457Bangkok Airways
3+ days ago
Mon, 22 Mar - Tue, 6 Apr
Bangkok Airways Logo
7:45 p.m. - 7:10 a.m.CNX  Chiang Mai-USM Ko Samui
11h 25m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
7:50 a.m. - 9:20 a.m.USM  Ko Samui-CNX Chiang Mai
25h 30m1 stop Bangkok Suvarnabhumi
C$ 461Bangkok Airways
3+ days ago
Sat, 21 Nov - Fri, 27 Nov
Bangkok Airways Logo
7:45 p.m. - 10:35 a.m.CNX  Chiang Mai-USM Ko Samui
14h 50m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
8:50 a.m. - 10:40 a.m.USM  Ko Samui-CNX Chiang Mai
1h 50mdirect
C$ 472Bangkok Airways
2 days ago
Thu, 18 Mar - Sun, 4 Apr
Bangkok Airways Logo
7:45 p.m. - 7:10 a.m.CNX  Chiang Mai-USM Ko Samui
11h 25m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
7:50 a.m. - 7:10 p.m.USM  Ko Samui-CNX Chiang Mai
11h 20m1 stop Bangkok Suvarnabhumi
C$ 483Bangkok Airways
3+ days ago
Sat, 21 Nov - Mon, 30 Nov
Bangkok Airways Logo
7:45 p.m. - 7:35 a.m.CNX  Chiang Mai-USM Ko Samui
11h 50m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
7:00 a.m. - 11:20 a.m.USM  Ko Samui-CNX Chiang Mai
4h 20m1 stop Bangkok Suvarnabhumi
C$ 485Bangkok Airways
2 days ago
Wed, 13 Jan - Wed, 27 Jan
Bangkok Airways Logo
10:10 a.m. - 4:15 p.m.CNX  Chiang Mai-USM Ko Samui
6h 05m1 stop Bangkok Suvarnabhumi
Bangkok Airways Logo
8:50 a.m. - 10:40 a.m.USM  Ko Samui-CNX Chiang Mai
1h 50mdirect
C$ 497Bangkok Airways
2 days ago
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 C$ 535 to C$ 672. The lowest price found in the past 5 days was C$ 402, 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 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 C$ 241 round-trip.
•August (C$ 795) and February (C$ 742) 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

C$ 223
Beat the crowds with an average 66% drop in traveller numbers.
The most popular month to fly with an average 97% increase in traveller numbers.
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.

  • Which 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 does a flight from Chiang Mai to Ko Samui take?

    A direct flight from Chiang Mai to Ko Samui takes 1h 46m, covering 1,659 km.

  • 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 another form of identification, such as a driver's licence.

  • 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 C$ 535 to C$ 672, with an average of C$ 616 over the past 12 months. Anything below C$ 535 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 direct options on average. Layover fares average C$ 539 round-trip via Bangkok Suvarnabhumi (BKK), compared to C$ 603 for direct.

  • 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% 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 C$ 402 to C$ 846. That means the highest observed fare was about 2x 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 C$ 239, which is 37% 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 starting from around C$ 18 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 on the route 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 three 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 C$ 511 round-trip on average, while Saturday is the most expensive at C$ 658, a difference of C$ 147.

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

  • Which airlines fly from Chiang Mai to Ko Samui?

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

  • Which 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.

  • 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 carry-on bag and a checked bag in Economy Class

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

  • What is the luggage allowance on NOK Air flights from Chiang Mai to Koh Samui?

    The luggage allowance on flights from Chiang Mai to Koh Samui with Nok Air varies based on the type of ticket. Passengers have a checked baggage allowance of 20 kg unless otherwise indicated. Passengers are also allowed to bring one piece of hand baggage on board, which should weigh no more than 7 kg. It's always best to confirm the baggage allowance before booking your flight.

  • What services are offered by Thai Airways for travelers with reduced mobility flying from Chiang Mai to Koh Samui?

    Thai Airways provides a range of services for passengers with reduced mobility on flights from Chiang Mai to Koh Samui. These services include assistance with wheelchair and boarding, as well as the use of special seating and other equipment as needed. Passengers with reduced mobility can request these services at the time of booking. Thai Airways provides wheelchair assistance both at the airport and on board when necessary.

  • Which nearby cities can be accessed from Ko Samui Airport (USM)?

    From Ko Samui Airport, passengers can access several nearby cities in Thailand through domestic flights operated by various airlines. These nearby cities include Bangkok, Krabi, Phuket, Pattaya, and Surat Thani. The airlines that offer these domestic flights include Bangkok Airways, Thai Smile, Nok Air, Thai AirAsia, Thai Lion Air, and Thai Vietjet Air.

  • What type of seats are available on Thai AirAsia flights from Chiang Mai to Koh Samui?

    Thai AirAsia offers a range of seat options for passengers to choose from for flights from Chiang Mai to Koh Samui, including regular seats and hot seats. Hot seats are premium seats located at the front of the plane that offer extra legroom and other amenities. These seats can be selected at the time of booking for an additional fee. Additionally, Thai AirAsia offers spacious cabin seating, which provides additional legroom and comfort for passengers.

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 C$ 511, about C$ 147 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 C$ 241 round-trip in that month – typically C$ 555 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 C$ 539 round-trip on this route – about C$ 64 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
  • Thai Lion Air provides various services for families traveling with infants who are flying from Chiang Mai to Koh Samui. The airline allows the carrying of infant formula and food in cabin baggage and allows infants under the age of 2 years old are allowed to travel on Thai Lion Air flights for 10% of the highest adult fare without a seat.
  • Bangkok Airways operates as the main airline at Ko Samui Airport (USM) and has its own dedicated Blue Ribbon Lounge located in the international terminal for eligible passengers like those on flights from Chiang Mai to Koh Samui.
  • If you choose to take a connecting flight from Chiang Mai to Koh Samui expect to have layovers in cities such as Bangkok (DMK), Krabi (KBV), and Utapao (UTP).
  • Pet owners who are flying from Chiang Mai to Koh Samui with Thai Airways will need to pay a fee to have their pets transported. Pets are generally transported in the aircraft's hold as checked baggage, with a limited number of pets per flight.
  • Bangkok Airways has implemented various initiatives to reduce carbon emissions in its operations for flights from Chiang Mai to Koh Samui. These include investing in newer, more fuel-efficient aircraft, incorporating operational efficiencies to reduce fuel consumption, and using sustainable aviation fuels where possible.

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 nonstop 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 nonstop 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