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Flights to Ko Samui

Find cheap flights to Ko Samui in 2025/2026 from $746 This is the cheapest return flight found to Ko Samui from USA on FlightsFinder on April 28th 2025 at 23:21. This offer may no longer be available. Click the offer to check live prices & dates of travel.

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Our Flight Finder compares the cheapest flights to Ko Samui from the most established flight comparison sites.
Fly to Ko Samui and visit sites like Chaweng Beach, Lamai Beach, Maenam Beach & Bo Phut Beach.

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What are the cheapest return flights to Ko Samui in 2025/2026?

These economy flights were found on FlightsFinder from USA to Ko Samui in the last few days. Prices subject to availability.

What are the cheapest one-way flights to Ko Samui in 2025/2026?

These economy flights were found on FlightsFinder from USA to Ko Samui in the last few days. Prices subject to availability.

No flights found for this month.

When are flights to Ko Samui cheapest?

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The month of September

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According to our data, September is on average the cheapest time to book flights to Ko Samui.
You can get flights from $746 return.

When is the most expensive time to fly to Ko Samui?

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The month of July

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According to our data, July is on average the most expensive time to book flights to Ko Samui.
A return flight could set you back more than $1,408.

Why fly to Ko Samui?

Ko Samui, an idyllic island paradise nestled in the Gulf of Thailand, captures the hearts of visitors with its pristine white sandy beaches, crystal-clear turquoise waters, and lush tropical landscapes. This enchanting destination offers a perfect blend of serenity and vibrant energy, making it a haven for relaxation and adventure seekers alike. Explore picturesque fishing villages, indulge in sumptuous local cuisine, or snorkel in the vibrant coral reefs teeming with marine life. Whether you seek tranquillity under swaying palm trees or excitement in bustling markets, Ko Samui promises an unforgettable journey of discovery and relaxation.

Frequently asked questions about Flights to Ko Samui

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Weather in Ko Samui

Clouds
Clouds

91.3 °F

Wed, 30 Apr 2025

Average Temperature

84°F

Jan

85°F

Feb

87°F

Mar

90°F

Apr

91°F

May

91°F

Jun

90°F

Jul

90°F

Aug

89°F

Sep

87°F

Oct

85°F

Nov

85°F

Dec

Ko Samui

Flight Distance and Flying Time to Ko Samui

Atlanta, USA - Georgia, Atlanta Hartsfield-Jackson International Airport (ATL) to Ko Samui (USM)

Distance:
9,438 miles (15,190 kilometres)

Average flight time (direct 21 hours 28 minutes)

Los Angeles, USA - California, Los Angeles International Airport (LAX) to Ko Samui (USM)

Distance:
8,514 miles (13,702 kilometres)

Average flight time (direct 19 hours 25 minutes)

New York, USA - John F Kennedy International Airport (JFK) to Ko Samui (USM)

Distance:
8,947 miles (14,399 kilometres)

Average flight time (direct 20 hours 22 minutes)

Dallas, USA - Dallas, Texas Fort Worth International Airport (DFW) to Ko Samui (USM)

Distance:
9,295 miles (14,959 kilometres)

Average flight time (direct 21 hours 9 minutes)

Denver, USA - Colorado, Airport - Denver International Airport (DEN) to Ko Samui (USM)

Distance:
8,674 miles (13,959 kilometres)

Average flight time (direct 19 hours 46 minutes)

San Francisco, USA - California, San Francisco International Airport (SFO) to Ko Samui (USM)

Distance:
8,179 miles (13,163 kilometres)

Average flight time (direct 18 hours 40 minutes)

Seattle, USA - Airport - Seattle Tacoma International, Washington (SEA) to Ko Samui (USM)

Distance:
7,721 miles (12,426 kilometres)

Average flight time (direct 17 hours 39 minutes)

Las Vegas, USA - Nevada, McCarran International Airport (LAS) to Ko Samui (USM)

Distance:
8,540 miles (13,744 kilometres)

Average flight time (direct 19 hours 28 minutes)

Orlando, USA - Florida, Orlando International Airport (MCO) to Ko Samui (USM)

Distance:
9,811 miles (15,790 kilometres)

Average flight time (direct 22 hours 18 minutes)

Charlotte, USA - North Carolina, Douglas International Airport (CLT) to Ko Samui (USM)

Distance:
9,343 miles (15,037 kilometres)

Average flight time (direct 21 hours 15 minutes)

Phoenix, USA - Arizona, Phoenix Sky Harbor International Airport (PHX) to Ko Samui (USM)

Distance:
8,795 miles (14,155 kilometres)

Average flight time (direct 20 hours 2 minutes)

Houston, USA - Texas, Airport - George Bush Intercontinental (IAH) to Ko Samui (USM)

Distance:
9,520 miles (15,321 kilometres)

Average flight time (direct 21 hours 39 minutes)

Miami, USA - Florida, Miami International Airport (MIA) to Ko Samui (USM)

Distance:
9,995 miles (16,085 kilometres)

Average flight time (direct 22 hours 42 minutes)

Boston, USA - Massachusetts, Edward L. Logan International Airport (BOS) to Ko Samui (USM)

Distance:
8,806 miles (14,171 kilometres)

Average flight time (direct 20 hours 4 minutes)

Minneapolis, USA - Minnesota, Airport - St. Paul International (MSP) to Ko Samui (USM)

Distance:
8,586 miles (13,818 kilometres)

Average flight time (direct 19 hours 34 minutes)

Fort Lauderdale, USA - Florida, Fort Lauderdale-Hollywood International Airport (FLL) to Ko Samui (USM)

Distance:
9,976 miles (16,054 kilometres)

Average flight time (direct 22 hours 40 minutes)

Detroit, USA - Michigan, Airport - Metropolitan Wayne County International (DTW) to Ko Samui (USM)

Distance:
8,854 miles (14,249 kilometres)

Average flight time (direct 20 hours 10 minutes)

Philadelphia, USA - Pennsylvania, Airport - Philadelphia International (PHL) to Ko Samui (USM)

Distance:
9,009 miles (14,499 kilometres)

Average flight time (direct 20 hours 31 minutes)

Baltimore, USA - Maryland, Baltimore/Washington International Airport (BWI) to Ko Samui (USM)

Distance:
9,064 miles (14,587 kilometres)

Average flight time (direct 20 hours 38 minutes)

Salt Lake City, USA - Utah, Salt Lake City International Airport (SLC) to Ko Samui (USM)

Distance:
8,404 miles (13,526 kilometres)

Average flight time (direct 19 hours 10 minutes)

San Diego, USA - California, San Diego International Airport (SAN) to Ko Samui (USM)

Distance:
8,622 miles (13,876 kilometres)

Average flight time (direct 19 hours 39 minutes)

Tampa, USA - Florida, Tampa International Airport (TPA) to Ko Samui (USM)

Distance:
9,838 miles (15,833 kilometres)

Average flight time (direct 22 hours 21 minutes)

Portland, USA - International Airport, Oregon (PDX) to Ko Samui (USM)

Distance:
7,800 miles (12,553 kilometres)

Average flight time (direct 17 hours 50 minutes)

Map of Ko Samui

Travel Videos About Ko Samui

Cheapest flight routes found to Ko Samui

From Los Angeles

From Los Angeles (LAX), USA to Koh Samui, Thailand (USM): $746

Depart: 22 Sep 2025 · Return: 03 Oct 2025 Price found 28 Apr 2025, 23:21

From San Francisco

From San Francisco (SFO), USA to Koh Samui, Thailand (USM): $801

Depart: 03 Mar 2026 · Return: 10 Mar 2026 Price found 29 Apr 2025, 09:40

From Seattle

From Seattle (SEA), USA to Koh Samui, Thailand (USM): $811

Depart: 14 Jan 2026 · Return: 17 Feb 2026 Price found 28 Apr 2025, 05:09

From New York

From New York (JFK), USA to Koh Samui, Thailand (USM): $1,000

Depart: 15 Feb 2026 · Return: 25 Feb 2026 Price found 27 Apr 2025, 22:48

From Houston

From Houston (IAH), USA to Koh Samui, Thailand (USM): $1,141

Depart: 04 Sep 2025 · Return: 14 Sep 2025 Price found 29 Apr 2025, 18:21

From Dallas

From Dallas (DFW), USA to Koh Samui, Thailand (USM): $1,175

Depart: 30 Jan 2026 · Return: 08 Feb 2026 Price found 29 Apr 2025, 21:11

From Portland

From Portland (PDX), USA to Koh Samui, Thailand (USM): $1,217

Depart: 13 Nov 2025 · Return: 28 Nov 2025 Price found 28 Apr 2025, 07:37

From Boston

From Boston (BOS), USA to Koh Samui, Thailand (USM): $1,226

Depart: 30 Apr 2025 · Return: 26 May 2025 Price found 29 Apr 2025, 20:50

From Washington D.C.

From Washington D.C. (BWI), USA to Koh Samui, Thailand (USM): $1,233

Depart: 03 Sep 2025 · Return: 08 Sep 2025 Price found 26 Apr 2025, 15:29

From Atlanta

From Atlanta (ATL), USA to Koh Samui, Thailand (USM): $1,392

Depart: 24 Feb 2026 · Return: 28 Feb 2026 Price found 28 Apr 2025, 05:00

From Phoenix

From Phoenix (PHX), USA to Koh Samui, Thailand (USM): $1,501

Depart: 17 Jul 2025 · Return: 18 Aug 2025 Price found 28 Apr 2025, 12:03

From Las Vegas

From Las Vegas (LAS), USA to Koh Samui, Thailand (USM): $1,513

Depart: 12 Jun 2025 · Return: 19 Jun 2025 Price found 28 Apr 2025, 17:06

From Miami

From Miami (MIA), USA to Koh Samui, Thailand (USM): $1,551

Depart: 10 Jun 2025 · Return: 17 Jun 2025 Price found 27 Apr 2025, 15:36

From Orlando

From Orlando (MCO), USA to Koh Samui, Thailand (USM): $1,565

Depart: 11 May 2025 · Return: 17 May 2025 Price found 27 Apr 2025, 15:31

From San Diego

From San Diego (SAN), USA to Koh Samui, Thailand (USM): $1,568

Depart: 26 May 2025 · Return: 31 May 2025 Price found 28 Apr 2025, 20:27

From Denver

From Denver (DEN), USA to Koh Samui, Thailand (USM): $1,639

Depart: 23 Jul 2025 · Return: 06 Aug 2025 Price found 26 Apr 2025, 16:57

From Philadelphia

From Philadelphia (PHL), USA to Koh Samui, Thailand (USM): $1,648

Depart: 03 Aug 2025 · Return: 12 Aug 2025 Price found 29 Apr 2025, 04:17

From Detroit

From Detroit (DTW), USA to Koh Samui, Thailand (USM): $1,672

Depart: 09 Dec 2025 · Return: 16 Dec 2025 Price found 28 Apr 2025, 21:43

From Fort Lauderdale

From Fort Lauderdale (FLL), USA to Koh Samui, Thailand (USM): $1,719

Depart: 03 May 2025 · Return: 10 May 2025 Price found 26 Apr 2025, 07:25

From Charlotte

From Charlotte (CLT), USA to Koh Samui, Thailand (USM): $2,129

Depart: 03 Jul 2025 · Return: 07 Jul 2025 Price found 27 Apr 2025, 17:09

From Minneapolis

From Minneapolis (MSP), USA to Koh Samui, Thailand (USM): $2,274

Depart: 10 Dec 2025 · Return: 17 Dec 2025 Price found 29 Apr 2025, 19:12

From Tampa

From Tampa (TPA), USA to Koh Samui, Thailand (USM): $2,763

Depart: 11 Jul 2025 · Return: 01 Aug 2025 Price found 29 Apr 2025, 14:42