How long is the flight from USA to Ko Samui?

There are many flights that can get you from USA to Ko Samui in 26h 25m. Fly via Singapore Airlines, EVA Air, or Cathay Pacific to get the fastest option. The distance between USA and Ko Samui is about 8835 mi. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines to fly from USA to Ko Samui one-way?

To fly one-way, consider booking your trip with EVA Air, which is currently one of the cheapest options available, starting at $537. Qatar Airways flights start at $580 while deals on Singapore Airlines start at $815 one-way.

What is the cheapest month to book a flight from USA to Ko Samui?

Currently, September is the cheapest month in which you can book a flight from USA to Ko Samui (average of $686). Flying from USA to Ko Samui in June is currently the most expensive (average of $1,386). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest day to fly from USA to Ko Samui?

Travelers seeking maximum savings on their USA to Ko Samui flight should consider departing on Thursday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Ko Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Ko Samui when rainfall is around 2.3 in.

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

What are the most popular routes from USA to Ko Samui?

Most travelers choose Los Angeles - Ko Samui, San Francisco - Ko Samui or New York John F Kennedy Intl - Ko Samui when deciding on the best route from USA to Ko Samui.

What are the most popular airlines that fly from USA to Ko Samui?

Before booking your flight from USA to Ko Samui check out the most popular airlines for this route: Singapore Airlines, Qatar Airways or EVA Air.

What is the cheapest time of day to fly from US to USM?

One of the essential ways to save on airfare from USA to Ko Samui is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 21% on airfare.

What airport do you fly into for flights to Ko Samui from United States?

For a flight from United States to Ko Samui, you will be flying into Ko Samui. Ko Samui (USM) is just 2.1 mi from the center of the city.

Can I find deals for flights from USA to Ko Samui that include hotel bookings?

Yes. In addition to deals on USA to Ko Samui flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from USA to Ko Samui?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from USA to Ko Samui.

Can I find deals for business class flights from USA to Ko Samui?

Yes. Cheapflights offers flight deals from USA to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$414+ Cheap Flights from the United States to Ko Samui

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$731 (FlightHub)
One-way from	$414 (Kiwi.com)

EVA's economy offers 33 inches of legroom on 777s, ideal for long-haul comfort.

EVA's Royal Laurel Class features lie-flat seats with 82-inch pitch, ensuring restful long-haul travel.

Airline	Cheapest	Average	Flexibility	On-time
Singapore Airlines	Cheapest$756	Average$1,212	FlexibilityNo cancel fee	On-time81%
EVA Air	Cheapest$1,001	Average$1,172	FlexibilityNo cancel fee	On-time74%
Qatar Airways	Cheapest$1,584	Average$1,969	FlexibilityNo cancel fee	On-time68%

$414+ Cheap flights from the United States to Ko Samui (USM)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/3. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from USA to Ko Samui

Keep the following information in mind while searching for USA to Ko Samui flight deals. Data was last updated November 6, 2025.

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Most trusted provider

Round-trip from

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Find flight deals from USA to Ko Samui

Cheapest flights from USA to Ko SamuiExplore the most affordable flight options available from USA to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 6, 2025.

Explore the most affordable flight options available from USA to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 6, 2025.

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Use the filters below to find and compare flights from the United States to Ko Samui that are best for you.

Best time to book a flight from USA to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from USA with our price prediction graph.

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Everything you need to know about your flight from the United States to Ko Samui

What is the cheapest month to book a flight from USA to Ko Samui?

What is the cheapest time of day to fly from US to USM?

Find hourly flight availability from USA to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 6, 2025.

What is the cheapest day to fly from USA to Ko Samui?

Use this chart to determine the cheapest time to fly round-trip from USA to Ko Samui. Price data was last updated on March 30, 2025.

The best insider tips for theUnited States to Ko Samui flights

Cheapflights partnered with top experts to bring you the best recommendations for your theUnited States to Ko Samui trip

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Singapore Airlines

Qatar Airways

EVA Air

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USM

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Reviews of airlines servicing Ko Samui

See what other customers who have flown with EVA Air, Singapore Airlines, and Qatar Airways from the United States to Ko Samui have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from USA to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Ko Samui from United States?

How long is the flight from USA to Ko Samui?

What are the cheapest airlines to fly from USA to Ko Samui one-way?

What are the most popular routes from USA to Ko Samui?

Can I find deals for flights from USA to Ko Samui that include hotel bookings?

How can I find direct flights from USA to Ko Samui?

Can I find deals for business class flights from USA to Ko Samui?

What is the cheapest month to book a flight from USA to Ko Samui?

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Cheapest flights from USA to Ko Samui
Explore the most affordable flight options available from USA to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 6, 2025.