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Cheap Flights from Hong Kong to Koh Samui

Popular airlines from Hong Kong to Koh Samui

Choose from 2 airlines flying from Hong Kong to Koh Samui, including Bangkok Airways, Hong Kong Airlines and . Bangkok Airways currently offers the cheapest ticket on this route.

Explore the cheapest flights from Hong Kong to Koh Samui in the next three months. Based on Trip.com's data from the latest 7 days, one-way direct flights start at IDR 4,493,469, and round-trip direct tickets start at IDR 7,557,628.

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flying from Hong Kong to Koh Samui

The distance between Hong Kong and Koh Samui is approximately 2,071.84km. It takes around 3 hours 30 minutes on average to fly from Hong Kong to Koh Samui. Based on Trip.com's data, travel demand peaks in July. The off-season for travel is October.

Cheapest one-way flight priceIDR 2,669,622
Cheapest return ticket priceIDR 5,974,755
Off-season for travelOctober
Peak season for travelJuly
Flight distance2,071.84km
Average flight time3 hours 30 minutes
Popular airlineBangkok Airways

Cheapest time to fly from Hong Kong to Koh Samui

The cheapest time for Hong Kong to Koh Samui flights: Jan 11 to Jan 18 — one way flight prices from IDR 2,669,621.

Cheapest flights
From price
Search
  • 714
  • 1421
  • 2128
  • Jan

    284
  • 411
  • 1118
  • 1825
  • Feb

    251
  • 18
  • 815
  • 1522
  • Mar

    221
Displayed prices are calculated based on the lowest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • Which airlines offer the cheapest flights from Hong Kong (HKG) to Koh Samui (USM)?

    Based on Trip.com data, Thai Lion Air offers one-way fares as low as IDR 2,669,622 on Cheapest nonstop routes (e.g. HKG to USM on Mon, Jan 12), while HK Express offers Cheapest nonstop round-trips from IDR 5,974,755 departing on Sat, Jan 17 and returning on Thu, Jan 22.
  • At the moment, you can catch a direct flight from Hong Kong to Koh Samui with the following airlines, including: Bangkok Airways Hong Kong Airlines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes about 3 hours 30 minutes to fly from Hong Kong (HKG) to Koh Samui (USM).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Hong Kong 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.
  • Based on Trip.com data in the past 4 weeks, there is 21 flight per week flying from Hong Kong to Koh Samui. You can check the weekly schedule for popular airlines on this route below: Hong Kong Airlines: S/M/T/W/T/F/S -- HX3752 (17:31)
  • To find best deals on flights from Hong Kong 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 Mon, Jan 12, with one-way flights priced at just IDR 2,669,622.
    · 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.
  • The cheapest months to fly from Hong Kong to Koh Samui is October, when demand for travel is lower.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Hong Kong to Koh Samui on December 11, 2025 with HK Express, with prices starting at IDR 5,601,479.
  • You can land at any one of the following hubs in Koh Samui, with Hong Kong International Airport to Samui Airport (HKG-USM) is by far the most common option on this route: Samui Airport (USM).
  • The time difference between Koh Samui and Hong Kong is 1h.
  • 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.