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

To fly one-way, consider booking your trip with Singapore Airlines, which is currently one of the cheapest options available, starting at $624. EVA Air flights start at $659 while deals on Turkish Airlines start at $664 one-way.

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 Washington, D.C. Dulles Intl - Ko Samui, New York John F Kennedy Intl - Ko Samui or Newark - Ko Samui when deciding on the best route from USA to Ko Samui.

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

March can be a great time to fly to Ko Samui from USA with a flight ticket averaging about $1,749. Cheapflights users have found deals in the month of March for as cheap as $1,410. The most expensive prices can be found in the month of September.

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

When flying from USA to Ko Samui, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

$1,210+ Flights from the United States to Ko Samui

Round-trip from	$737 (FlightHub)
One-way from	$542 (SmartFares)
Popular in	September
Cheapest in	March
Average price	$2,069

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$775	Average$1,268	FlexibilityNo cancel fee	On-time81%
EVA Air	Cheapest$999	Average$1,221	FlexibilityNo cancel fee	On-time74%
Qatar Airways	Cheapest$1,584	Average$1,912	FlexibilityNo cancel fee	On-time68%

$432+ 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 10/23. 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 July 3, 2025.

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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 July 3, 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 July 3, 2025.

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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 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 July 3, 2025.

Reviews of airlines servicing Ko Samui

See what other customers who have flown with EVA Air, ANA, and Japan Airlines 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?

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?

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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 July 3, 2025.