Cheap Flights from Chiang Mai to Koh Samui from AU$ 154

Flight FAQs

• Which airlines offer the cheapest flights from Chiang Mai (CNX) to Koh Samui (USM)?

  Based on Trip.com data, Thai Vietjet Air offers one-way fares as low as AU$ 154 on Cheapest nonstop routes (e.g. CNX to USM on Tue, Sep 29), while Bangkok Airways offers Cheapest nonstop round-trips from AU$ 333 departing on Fri, Oct 16 and returning on Tue, Oct 20.

• Which airlines offer direct flights from Chiang Mai to Koh Samui?

  At the moment, you can catch a direct flight from Chiang Mai to Koh Samui with the following airlines, including: Bangkok Airways Thai Airways Thai Vietjet Air Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long is the flights from Chiang Mai (CNX) to Koh Samui (USM)?

  It takes about 1 hour 45 minutes to fly from Chiang Mai (CNX) to Koh Samui (USM).

• When is the best time to book flights from Chiang Mai to Koh Samui?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Chiang Mai to Koh Samui is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Chiang Mai to Koh Samui?

  Based on Trip.com data in the past 4 weeks, there is 14 flight per week flying from Chiang Mai to Koh Samui. You can check the weekly schedule for popular airlines on this route below: Bangkok Airways: S/M/T/W/T/F/S -- PG242 (11:45)

• How can I find the best deals on flights from Chiang Mai to Koh Samui?

  To find best deals on flights from Chiang Mai to Koh Samui, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, Sep 29, with one-way flights priced at just AU$ 154.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Bangkok Airways.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Koh Samui travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When is the best time to book a flight from Chiang Mai to Koh Samui to get the best price?

  The cheapest months to fly from Chiang Mai to Koh Samui is September, when demand for travel is lower.

• Which upcoming date is the cheapest for flights from Chiang Mai to Koh Samui?

  After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Chiang Mai to Koh Samui on August 30, 2026 with Thai AirAsia, with prices starting at AU$ 171.

• Which airports can I fly through when travelling to Koh Samui from Chiang Mai?

  You can land at any one of the following hubs in Koh Samui, with Chiang Mai International Airport to Samui Airport (CNX-USM) is by far the most common option on this route: Samui Airport (USM).

• What is the time difference between Chiang Mai and Koh Samui?

  The time difference between Koh Samui and Chiang Mai is 0m.

• How can I change or cancel my flight ticket from Chiang Mai to Koh Samui?

  Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from Chiang Mai to Koh Samui?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Chiang Mai to Koh Samui is AU$ 259. Fares vary by travel date, airline and availability.

• What is the average cost of a return flight from Chiang Mai to Koh Samui?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Chiang Mai to Koh Samui is AU$ 486. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from Chiang Mai to Koh Samui on Trip.com?

  Enter Chiang Mai and Koh Samui, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

• Are there budget airlines on the Chiang Mai to Koh Samui route?

  Thai Vietjet Air, Thai AirAsia and Thai Lion Airare the most popular budget airlines flying from Chiang Mai to Koh Samui. Check baggage, seat and payment fees before comparing the final price.