Trip.com
>
Flights
>
Flights to Thailand
>
Flights to Khon Kaen Province
>
Flights to Khon Kaen
>
Flights from Koh Samui to Khon Kaen

Find flight deals from Koh Samui to Khon Kaen for the next 3 months. Book one way flights from €122 or round trip flights from €314.

      • USM 07:15
        11h 35m
        1 stop
        KKC 18:50
        Koh Samui - Khon Kaen | Sun, Dec 14 | Bangkok Airways
        KKC 09:15
        10h 35m
        1 stop
        USM 19:50
        Khon Kaen - Koh Samui | Fri, Dec 19 | Thai AirAsia
        €314 €696
        55% OFF
        55% OFF
        €696 €314
      • USM 06:45
        13h 35m
        1 stop
        KKC 20:20
        Koh Samui - Khon Kaen | Tue, Jan 27 | Bangkok Airways
        KKC 13:00
        6h 50m
        1 stop
        USM 19:50
        Khon Kaen - Koh Samui | Sat, Jan 31 | Thai AirAsia
        €326 €696
        53% OFF
        53% OFF
        €696 €326
      • USM 06:45
        5h 5m
        1 stop
        KKC 11:50
        Koh Samui - Khon Kaen | Wed, Dec 17 | Bangkok Airways
        KKC 13:00
        4h 40m
        1 stop
        USM 17:40
        Khon Kaen - Koh Samui | Sat, Dec 20 | Thai AirAsia
        €327 €696
        53% OFF
        53% OFF
        €696 €327
      • USM 06:45
        11h 45m
        1 stop
        KKC 18:30
        Koh Samui - Khon Kaen | Thu, Dec 18 | Bangkok Airways
        KKC 08:40
        12h 40m
        1 stop
        USM 21:20
        Khon Kaen - Koh Samui | Sat, Dec 20 | Thai Vietjet Air
        €328
        53% OFF
        €696 €328
      • USM 07:55
        10h 35m
        1 stop
        KKC 18:30
        Koh Samui - Khon Kaen | Wed, Jan 7 | Bangkok Airways
        KKC 08:40
        11h 45m
        1 stop
        USM 20:25
        Khon Kaen - Koh Samui | Fri, Jan 9 | Thai Vietjet Air
        €341
        51% OFF
        €696 €341
      • USM 06:45
        5h 15m
        1 stop
        KKC 12:00
        Koh Samui - Khon Kaen | Fri, Dec 12 | Bangkok Airways
        KKC 12:40
        8h 40m
        1 stop
        USM 21:20
        Khon Kaen - Koh Samui | Mon, Dec 15 | Thai Lion Air
        €341
        51% OFF
        €696 €341
      • USM 06:45
        13h 15m
        1 stop
        KKC 20:00
        Koh Samui - Khon Kaen | Sat, Dec 27 | Bangkok Airways
        KKC 09:15
        9h 25m
        1 stop
        USM 18:40
        Khon Kaen - Koh Samui | Sat, Jan 3 | Thai AirAsia
        €364
        48% OFF
        €696 €364
      • USM 06:45
        5h 15m
        1 stop
        KKC 12:00
        Koh Samui - Khon Kaen | Tue, Dec 30 | Bangkok Airways
        KKC 08:10
        13h 10m
        1 stop
        USM 21:20
        Khon Kaen - Koh Samui | Fri, Jan 2 | Thai Lion Air
        €423
        39% OFF
        €696 €423
      • USM 19:30
        12h 40m
        1 stop
        KKC 08:10
        Koh Samui - Khon Kaen | Tue, Jan 27 | Apg Airlines
        KKC 08:40
        8h
        1 stop
        USM 16:40
        Khon Kaen - Koh Samui | Sat, Jan 31 | Thai Vietjet Air
        €463
        34% OFF
        €696 €463
      • USM 19:00
        13h 10m
        1 stop
        KKC 08:10
        Koh Samui - Khon Kaen | Sun, Dec 14 | Apg Airlines
        KKC 08:40
        11h 5m
        1 stop
        USM 19:45
        Khon Kaen - Koh Samui | Fri, Dec 19 | Thai Vietjet Air
        €488
        30% OFF
        €696 €488
      • USM 13:00
        17h 25m
        1 stop
        KKC Invalid Date
        Koh Samui - Khon Kaen | Thu, Dec 11 | Normal Airline
        KKC 15:00
        6h
        Nonstop
        USM 16:00
        Khon Kaen - Koh Samui | Sat, Dec 13 | Normal Airline
        Find More Flights
        Find More Flights

Displayed flight fares from Koh Samui to Khon Kaen are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight Info | Koh Samui to Khon Kaen

The distance between Koh Samui and Khon Kaen is approximately 823.28 km. Based on Trip.com's data travel demand peaks in July. The off-season for travel is December.

Cheapest one-way flight price€122
Cheapest return ticket price€314
Off-season for travelDecember
Peak season for travelJuly
Flight distance823.28 km

When is the cheapest time to fly from Koh Samui to Khon Kaen?

The cheapest time for Koh Samui to Khon Kaen flights: Dec 21 to Dec 28 — one way flight prices from €121.

Cheapest flights
From price
Search
  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
  • 815
  • 1522

  • Mar

    221
Displayed fare trends are based on Trip.com's aggregated average of the lowest flight prices from Koh Samui to Khon Kaen, calculated over the upcoming 10 weeks.

Frequently Asked Questions

  • What are the cheapest flights from Koh Samui to Khon Kaen (USM-KKC)?

    Based on Trip.com data, Bangkok Airways offers one-way fares as low as €122 on Cheapest nonstop routes (e.g. USM to KKC on Tue, Dec 23), while Bangkok Airways offers Cheapest nonstop round-trips from €314 departing on Sun, Dec 14 and returning on Fri, Dec 19.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Koh Samui to Khon Kaen 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.
  • To find best deals on flights from Koh Samui to Khon Kaen, 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, Dec 23, with one-way flights priced at just €122.
    · 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 Khon Kaen travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Koh Samui to Khon Kaen is December, when demand for travel is lower.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Koh Samui to Khon Kaen on December 31, 2025 with Bangkok Airways, with prices starting at €293.
  • The time difference between Khon Kaen and Koh Samui is 0h.
  • Tickets can only be changed or canceled 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.

Explore More Popular Flights