Cheap Flights from Hanoi to Koh Samui from US$147

Frequently Asked Questions

• What are the cheapest flights from Hanoi to Koh Samui (HAN-USM)?

  Based on Trip.com data, VietJet Air offers one-way fares as low as US$147 on Cheapest nonstop routes (e.g. HAN to USM on Tue, Sep 8), while Thai AirAsia offers Cheapest nonstop round-trips from US$416 departing on Mon, Sep 7 and returning on Sat, Sep 12.

• Which airlines offer direct flights from Hanoi to Koh Samui?

  At the moment, you can catch a nonstop flight from Hanoi to Koh Samui with the following airlines, including: Vietravel Airlines Thai Airways Vietnam Airlines VietJet Air Thai AirAsia Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• When is the best time to book flights from Hanoi 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 Hanoi 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 can I find the best deals on flights from Hanoi to Koh Samui?

  To find best deals on flights from Hanoi 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 8, with one-way flights priced at just US$147.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is VietJet Air.
  · 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 are flight tickets from Hanoi (HAN) to Koh Samui (USM) the cheapest?

  The cheapest months to fly from Hanoi to Koh Samui is November, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Hanoi to Koh Samui on?

  After crunching the numbers on our July flight calendar, it's currently cheapest to fly from Hanoi to Koh Samui on July 31, 2026 with Thai AirAsia, with prices starting at US$162.

• Which airports can I fly to for Koh Samui from Hanoi?

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

• Is there any time difference between Hanoi and Koh Samui?

  The time difference between Koh Samui and Hanoi is 0h.

• How do I change or cancel my ticket from Hanoi to Koh Samui?

  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.