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Flights from Udon Thani to Koh Samui

Find flight deals from Udon Thani to Koh Samui for the next 3 months. Book one way flights from PLN 382 or round trip flights from PLN 1,057.

      • UTH 07:35
        13h 45m
        1 stop
        USM 21:20
        Udon Thani - Koh Samui | Tue, Jan 13 | Nokair Airline
        USM 07:00
        9h
        1 stop
        UTH 16:00
        Koh Samui - Udon Thani | Tue, Jan 20 | Bangkok Airways
        PLN 1,057 PLN 1,400
        24% OFF
        24% OFF
        PLN 1,400 PLN 1,057
      • UTH 07:35
        11h 5m
        1 stop
        USM 18:40
        Udon Thani - Koh Samui | Tue, Jan 20 | Nokair Airline
        USM 07:00
        7h 55m
        1 stop
        UTH 14:55
        Koh Samui - Udon Thani | Fri, Jan 23 | Bangkok Airways
        PLN 1,058 PLN 1,400
        24% OFF
        24% OFF
        PLN 1,400 PLN 1,058
      • UTH 09:40
        9h
        1 stop
        USM 18:40
        Udon Thani - Koh Samui | Tue, Jan 20 | Thai Lion Air
        USM 07:00
        12h 55m
        1 stop
        UTH 19:55
        Koh Samui - Udon Thani | Fri, Jan 23 | Bangkok Airways
        PLN 1,066 PLN 1,400
        24% OFF
        24% OFF
        PLN 1,400 PLN 1,066
      • UTH 12:55
        18h 40m
        1 stop
        USM 07:35
        Udon Thani - Koh Samui | Sat, Jan 24 | Thai Lion Air
        USM 06:45
        5h 30m
        1 stop
        UTH 12:15
        Koh Samui - Udon Thani | Tue, Jan 27 | Bangkok Airways
        PLN 1,073
        23% OFF
        PLN 1,400 PLN 1,073
      • UTH 08:40
        22h 55m
        1 stop
        USM 07:35
        Udon Thani - Koh Samui | Sat, Jan 24 | Thai AirAsia
        USM 06:45
        12h 45m
        1 stop
        UTH 19:30
        Koh Samui - Udon Thani | Tue, Jan 27 | Bangkok Airways
        PLN 1,078
        23% OFF
        PLN 1,400 PLN 1,078
      • UTH 10:10
        8h 30m
        1 stop
        USM 18:40
        Udon Thani - Koh Samui | Tue, Jan 20 | Thai Vietjet Air
        USM 07:00
        7h 25m
        1 stop
        UTH 14:25
        Koh Samui - Udon Thani | Fri, Jan 23 | Bangkok Airways
        PLN 1,078
        23% OFF
        PLN 1,400 PLN 1,078
      • UTH 20:00
        11h 10m
        1 stop
        USM 07:10
        Udon Thani - Koh Samui | Tue, Jan 13 | Thai AirAsia
        USM 07:15
        12h 15m
        1 stop
        UTH 19:30
        Koh Samui - Udon Thani | Sun, Jan 18 | Bangkok Airways
        PLN 1,079
        23% OFF
        PLN 1,400 PLN 1,079
      • UTH 10:10
        8h 45m
        1 stop
        USM 18:55
        Udon Thani - Koh Samui | Tue, Jan 13 | Thai Vietjet Air
        USM 07:00
        7h 25m
        1 stop
        UTH 14:25
        Koh Samui - Udon Thani | Tue, Jan 20 | Bangkok Airways
        PLN 1,084
        23% OFF
        PLN 1,400 PLN 1,084
      • UTH 09:40
        9h 15m
        1 stop
        USM 18:55
        Udon Thani - Koh Samui | Tue, Jan 13 | Thai Lion Air
        USM 07:00
        12h 55m
        1 stop
        UTH 19:55
        Koh Samui - Udon Thani | Tue, Jan 20 | Bangkok Airways
        PLN 1,091
        22% OFF
        PLN 1,400 PLN 1,091
      • UTH 07:35
        9h 45m
        1 stop
        USM 17:20
        Udon Thani - Koh Samui | Sat, Dec 13 | Nokair Airline
        USM 06:45
        9h 15m
        1 stop
        UTH 16:00
        Koh Samui - Udon Thani | Tue, Dec 16 | Bangkok Airways
        PLN 1,204
        14% OFF
        PLN 1,400 PLN 1,204
      • UTH 13:00
        17h 25m
        1 stop
        USM Invalid Date
        Udon Thani - Koh Samui | Mon, Dec 15 | Normal Airline
        USM 15:00
        6h
        Nonstop
        UTH 16:00
        Koh Samui - Udon Thani | Wed, Dec 17 | Normal Airline
        Find More Flights
        Find More Flights
      • UTH 08:40
        22h 30m
        1 stop
        USM 07:10
        Udon Thani - Koh Samui | Thu, Jan 8 | Thai AirAsia
        PLN 382 PLN 469
        19% OFF
        19% OFF
        PLN 469 PLN 382
      • UTH 08:40
        22h 30m
        1 stop
        USM 07:10
        Udon Thani - Koh Samui | Thu, Jan 22 | Thai AirAsia
        PLN 383 PLN 469
        18% OFF
        18% OFF
        PLN 469 PLN 383
      • UTH 15:15
        15h 55m
        1 stop
        USM 07:10
        Udon Thani - Koh Samui | Wed, Jan 14 | Thai Lion Air
        PLN 385 PLN 469
        18% OFF
        18% OFF
        PLN 469 PLN 385
      • UTH 11:20
        19h 50m
        1 stop
        USM 07:10
        Udon Thani - Koh Samui | Sun, Jan 18 | Nokair Airline
        PLN 386
        18% OFF
        PLN 469 PLN 386
      • UTH 19:40
        11h 30m
        1 stop
        USM 07:10
        Udon Thani - Koh Samui | Wed, Jan 14 | Thai AirAsia
        PLN 390
        17% OFF
        PLN 469 PLN 390
      • UTH 09:40
        21h 30m
        1 stop
        USM 07:10
        Udon Thani - Koh Samui | Thu, Jan 22 | Thai Lion Air
        PLN 391
        17% OFF
        PLN 469 PLN 391
      • UTH 10:10
        21h
        1 stop
        USM 07:10
        Udon Thani - Koh Samui | Thu, Jan 22 | Thai Vietjet Air
        PLN 392
        17% OFF
        PLN 469 PLN 392
      • UTH 20:35
        10h 35m
        1 stop
        USM 07:10
        Udon Thani - Koh Samui | Mon, Jan 12 | Thai Lion Air
        PLN 392
        16% OFF
        PLN 469 PLN 392
      • UTH 07:35
        23h 35m
        1 stop
        USM 07:10
        Udon Thani - Koh Samui | Mon, Jan 12 | Nokair Airline
        PLN 394
        16% OFF
        PLN 469 PLN 394
      • UTH 15:15
        15h 55m
        1 stop
        USM 07:10
        Udon Thani - Koh Samui | Sun, Jan 18 | Thai Lion Air
        PLN 403
        14% OFF
        PLN 469 PLN 403
      • UTH 13:00
        17h 25m
        1 stop
        USM Invalid Date
        Udon Thani - Koh Samui | Mon, Dec 15 | Normal Airline
        Find More Flights
        Find More Flights

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

Flight Info | Udon Thani to Koh Samui

The distance between Udon Thani and Koh Samui is approximately 919.76 km. Based on Trip.com's data travel demand peaks in July. The off-season for travel is November.

Cheapest one-way flight pricePLN 382
Cheapest return ticket pricePLN 1,057
Off-season for travelNovember
Peak season for travelJuly
Flight distance919.76 km

When is the cheapest time to fly from Udon Thani to Koh Samui?

The cheapest time for Udon Thani to Koh Samui flights: Feb 22 to Mar 1 — one way flight prices from PLN 377.

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 Udon Thani to Koh Samui, calculated over the upcoming 10 weeks.

Frequently Asked Questions

  • What are the cheapest flights from Udon Thani to Koh Samui (UTH-USM)?

    Based on Trip.com data, Thai AirAsia offers one-way fares as low as PLN 382 on Cheapest nonstop routes (e.g. UTH to USM on Thu, Jan 8), while Nokair Airline offers Cheapest nonstop round-trips from PLN 1,057 departing on Tue, Jan 13 and returning on Tue, Jan 20.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Udon Thani 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.
  • To find best deals on flights from Udon Thani 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 Thu, Jan 8, with one-way flights priced at just PLN 382.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Thai AirAsia.
    · 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.
  • The cheapest months to fly from Udon Thani to Koh Samui is November, when demand for travel is lower.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Udon Thani to Koh Samui on December 13, 2025 with Nokair, with prices starting at PLN 1,061.
  • The time difference between Koh Samui and Udon Thani 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.

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