Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
From Las Vegas to Koh Samui
One-way flight from Las Vegas to Koh Samui
View COVID Travel Restrictions for Koh Samui
Can I fly to Koh Samui right now?
There are currently restrictions on flights to Koh Samui along with the rest of Thailand. Before you book or search for flights, consider the following restrictions: Entry restrictions
Thailand has suspended all normal commercial flights from entering the airport in Thailand, except for certain circumstances. However, the Thai Government organizes repatriation flights for Thai nationals to return to Thailand on a regular basis and certain air operators are permitted to operate semi-commercial flights to Thailand.
Entry to Thailand is permitted for particular persons in the exempted list, including nationals and residents of Thailand, immediate family of a national of Thailand, diplomats, Non-Thai nationals who have a work permit, students, Non-Thai nationals who need to receive medical treatment in Thailand, including their accompanying persons, except for treatment for COVID-19, Non-Thai nationals who are permitted to enter the Kingdom under a special arrangement with a foreign country or have been granted permission by the Prime Minister.
Thailand has also allowed foreigners to enter the kingdom by air under the Special Tourist Visa and Tourist Visa Exemption Scheme, for long-stay tourism purposes.
All travelers must register for a Certificate of Entry (COE) issued by Royal Thai Embassy.
All travelers must make a reservation at a Alternative State Quarantine (ASQ), at their own expense.
All travelers must have a medical certificate with a negative COVID-19 RT-PCR test result issued at most 72 hours prior to departure.
Foreign travelers must have an insurance to cover medical expenses in Thailand with a coverage cost of at least USD 100,000.
Travelers must have a Certificate of Entry (COE) issued by Royal Thai Embassy and a Fit to Fly health certificate issued at most 72 hours prior to departure.
All travelers who have received COEs are required to download and register via the ThailandPlus Application.
Travelers are subject to medical screening upon arrival.
All travelers to Thailand are required to complete 14 days quarantine at a State Quarantine or Alternative State Quarantine (ASQ) facility.
Thai public health regulations require that travelers who test positive for COVID-19 while in quarantine be transferred to a hospital for follow-up treatment and testing. Such individuals are required to remain in hospital until authorized for release by the public health authorities, often for at least 10 days. Travelers are responsible for all expenses related to this hospitalization.
If you are looking to book a trip to Koh Samui and are outside of the restricted areas, please take the proper precautions and stay informed about traveling during COVID-19.
Hide COVID Travel Restrictions for Koh Samui
Cheapest Prices for Koh Samui flights by month
The cheapest ticket to Koh Samui found for each month in 2021 based on historical flight searches by Cheapflights users.
Currently, the cheapest month for flights to Koh Samui is October. The most expensive month for flights is June. The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.
When is the best time to fly to Koh Samui?
Average Koh Samui flight ticket prices and weather conditions for 2021 and 2022 by month.
LAS - USM
$912 - $1,831
84.2 - 91.4 °F
1.97 - 16.65 inches
Whilst there are several times of the year to choose from, October is seen as the time to fly to Koh Samui, however, it is possible to get good deals throughout the year. May tends to be the warmest period in Koh Samui so if you are looking for sun or warmer climates then look to fly around this time. November is the wettest if you need to factor this in to your plans.
Alternative, similarly priced destinations
See alternative destinations where airfare is generally forecast to be close to Koh Samui flight prices.