$502 Cheap Flights to Ko Samui
One-way
Departing from
United States
Going to
Ko Samui, Thailand
Ko Samui (USM)
Thailand • May, 2026
93% AI deal score
$1,175 $502
Ko Samui (USM)
Thailand • November, 2026
86% AI deal score
$1,700 $659
Top Cheap Flight Deals from United States to Ko Samui
Recent round-trip flight deals to Ko Samui
Sun, May 10 - Wed, May 27
Cheapest
Los Angeles (LAX) - Ko Samui (USM)
Singapore Airlines Cargo airlines • 1 stop • Singapore (SIN)
Ko Samui (USM) - Los Angeles (LAX)
Bangkok Airways airlines • 1 stop • Singapore (SIN)
$1,175
$1,195
+$20
2%
Wed, Feb 25 - Tue, Mar 3
Detroit (DTW) - Ko Samui (USM)
Spirit Airlines airlines • 3 stops • New York (EWR), Mumbai (BOM), Bangkok (BKK)
Ko Samui (USM) - Detroit (DTW)
Bangkok Airways airlines • 3 stops • Bangkok (BKK), Shanghai (PVG), Los Angeles (LAX)
$1,365
Tue, May 12 - Wed, May 27
Cincinnati (CVG) - Ko Samui (USM)
Alaska Airlines, Inc. airlines • 3 stops • Seattle (SEA), Taipei (TPE), Bangkok (BKK)
Ko Samui (USM) - Cincinnati (CVG)
Bangkok Airways airlines • 3 stops • Bangkok (BKK), Singapore (SIN), San Francisco (SFO)
$2,125
$1,413
-$712
34%
Sun, May 3 - Wed, May 20
Wichita (ICT) - Ko Samui (USM)
Alaska Airlines, Inc. airlines • 3 stops • Seattle (SEA), Manila (MNL), Bangkok (BKK)
Ko Samui (USM) - Wichita (ICT)
Bangkok Airways airlines • 3 stops • Bangkok (BKK), Manila (MNL), Seattle (SEA)
$1,800
$1,432
-$368
20%
Wed, Apr 15 - Wed, Apr 22
New York (JFK) - Ko Samui (USM)
Cathay Pacific airlines • 1 stop • Hong Kong (HKG)
Ko Samui (USM) - New York (JFK)
Cathay Pacific airlines • 1 stop • Hong Kong (HKG)
$1,550
$1,508
-$42
3%
Mon, Jul 27 - Tue, Aug 11
Indianapolis (IND) - Ko Samui (USM)
Allegiant Air airlines • 3 stops • Boston (BOS), Seoul (ICN), Bangkok (BKK)
Ko Samui (USM) - Indianapolis (IND)
Bangkok Airways airlines • 3 stops • Bangkok (BKK), Manila (MNL), Seattle (SEA)
$1,505
The cheapest time to fly to Ko Samui
Ready to jet to Ko Samui on a budget? Check out these popular routes with surprisingly cheap fares (one-way prices):
Last-Minute Flights from United States to Ko Samui
Need to get to Ko Samui ASAP? Even if you're booking a flight on short notice, there are often last-minute deals available:
Next 2 weeks deals
Last Minute Flight Deals!
We found last-minute flight deals to Ko Samui, Thailand starting from $561, departing in the next two weeks.
⌛ Last-Minute
Philadelphia - USM
A great last-minute steal for a cross-country flight.
Found 1 week ago
$2013
round-trip
Facts About Flights from United States to Ko Samui
To help you plan your journey, here are some quick Ko Samui flight facts and tips.
Ko Samui city airports
Ko Samui is served by one primary airport: Samui Airport (USM). This privately-owned airport is known for its unique, open-air design, featuring tropical gardens and wooden structures that blend seamlessly with the island's natural environment. While not a large airport, USM offers flights to both domestic and international destinations, primarily connecting to Bangkok and other major cities in Southeast Asia. Due to its private ownership, flights to and from Samui Airport may be more limited and potentially pricier compared to airports served by multiple airlines. However, its convenience and proximity to popular resorts make it a desirable gateway to this beautiful island.
Pro tip: search “Ko Samui (Any)” to see fares to all Ko Samui airports – sometimes one is cheaper than the others on your dates.
Insights for flights to Ko Samui
Cheapest airport
Surat Thani (URT)
Looking for a savvy way to visit Ko Samui? Consider flying into Surat Thani Airport (URT), a bustling hub on the mainland. From there, you can hop on a ferry for a scenic journey to the island, often saving you some serious cash compared to flying directly to Ko Samui! It's a win-win: a lighter travel budget and an extra mini-adventure.
Nonstop vs. 1-stop
20+ cities
Ko Samui Airport (USM) is a secondary airport, not a major hub, but it still offers connections to over 20 cities! Popular routes include Bangkok, Phuket, and Singapore, making it a convenient gateway to island paradise.
Number of airlines
10+ airlines
Ko Samui is served by more than 10 airlines, including both full-service carriers like Bangkok Airways and Thai Airways, and low-cost options such as Nok Air and Thai Lion Air.
USM Airport Deal Stats
Current most discounted routes
Avg. most discounted routes (last 3 months)
USM airport insights
Best days to catch a deal
Wed, Fri
Based on the provided data, Sunday and Tuesday appear to be the days when the cheapest deals for Samui airport are most frequently found. Wednesday and Friday have the highest counts, so they might be the worst days to book flights to Samui.
Avg. deal survival time
19.3 hours
Deals for Samui Airport typically last around 19.3 hours, so it's important to act fast when you find one you like. Keep in mind that the best offers can disappear quickly, so don't hesitate to book if the price and timing work for you.
Rare deal frequency
10 deals
We found 10 rare deals for flights to/from Samui airport in the past month. These rare deals had an AI Deal Score of 90+ and were typically mistake fares, special promotions, or ultra-discounts.
Average price drop
-63%
The average price drop for flights to Samui Airport is 62.9%, indicating a significant potential for savings. Travelers looking to visit this destination could benefit greatly from monitoring prices and booking when they drop.
Next 4 weeks: deal forecast
Samui Weather and Flight Forecast - Next Month
The weather in Samui next month looks favorable for travel. There are no major price increases expected, but deals may be available mid-month.
Top 5 biggest price drops (last 3 months)
Found on February 7
Darwin - USM
$10,750 → $899
92%
Found on February 10
Nha Trang - USM
$1,563 → $150
90%
Found on February 11
Perth - USM
$920 → $170
82%
Found on February 7
Gold Coast - USM
$1,625 → $345
79%
Found on February 12
Atlanta - USM
$3,125 → $685
78%
Check these nearby airports too
Looking for more options? These airports near USM sometimes drop rare deals too:
Nakhon Si Thammarat (NST)
~12 rare deals/month
Ranong (UNN)
~5 rare deals/month
Surat Thani International (URT)
~10 rare deals/month
If you’re flexible with departure cities, it’s worth keeping an eye on nearby airports — especially NST and UNN for long-haul deal surprises.
When Is the Best Time to Fly from United States to Ko Samui
Timing is everything when hunting for cheap flights. Here are data-backed insights on the best times to fly to Ko Samui:
Cheapest month
November
Cheapest month
The cheapest month to fly to Ko Samui is November! This hidden gem offers a sweet escape before the holiday rush. With fewer tourists and delightful weather, November provides an ideal blend of affordability and enjoyable experiences.
Best day to book
Tuesday
Best day to book
The best day to book a flight to Ko Samui is Tuesday. Airlines often release deals at the start of the week to fill up the remaining seats. Keep an eye on those mid-week discounts and snag the perfect flight without breaking the bank.
Cheapest days to fly
Wednesday
Cheapest days to fly
The cheapest days to fly to Ko Samui are typically on Wednesday. Flying mid-week can save you some serious cash. Most people prefer to travel on weekends, so airlines offer lower prices on weekdays to entice travelers.
Advance booking sweet spot
2 months
Advance booking sweet spot
The advance booking sweet spot for flights to Ko Samui is around 2 months before your trip. Booking ahead often unlocks better deals, ensuring you get your preferred flights and seats. So, plan and book in advance to maximize your savings and get that dreamy Ko Samui vacation locked in.
Seasonal considerations
Ko Samui Airports & Ground Transportation
One big question for travelers is which Ko Samui airport to fly into. Here’s a quick guide to Ko Samui’s airports and how to get to the city from each:
Samui Airport (USM)
Welcome to Samui Airport, your gateway to paradise! This charming airport is privately owned and exudes a relaxed, tropical vibe from the moment you arrive. Forget long walks through endless terminals; here, open-air pavilions and lush gardens create a unique and calming pre-flight experience. Conveniently located near the major tourist areas, it provides easy access to the stunning beaches and vibrant towns of Ko Samui. Getting to your hotel is a breeze with readily available taxis, pre-booked minivans, and rental car services right outside the terminal. Enjoy the island vibes as soon as you step off the plane!
Tip: Arrive early to soak in the unique atmosphere and enjoy a leisurely coffee at one of the airport's cafes.
Other airports
While Ko Samui has its own airport, consider flying into nearby cities like Surat Thani or Nakhon Si Thammarat for potentially cheaper flights! From Surat Thani Airport, you can hop on a bus and then a ferry to reach Ko Samui, offering a scenic (and budget-friendly) journey, while from Nakhon Si Thammarat Airport, a taxi and ferry combo is your best bet. Remember to factor in the extra travel time (and potential sea sickness!) when choosing these alternatives.
What to Do in Ko Samui
Ko Samui isn’t just about getting there – it’s about enjoying the country once you arrive! Here are some top things to do in Ko Samui, organized by interest:
Sightseeing & landmarks
Get ready to explore Ko Samui's iconic Big Buddha, a shimmering golden statue that's a must-see! Then, wander through the Secret Buddha Garden, a whimsical collection of statues hidden in the island's lush interior. Don't forget to check out the unique rock formations at Hin Ta & Hin Yai.
Arts & culture
Delve into Ko Samui's cultural heart by visiting Wat Plai Laem, a vibrant temple showcasing elaborate Thai and Chinese-style architecture. Experience the local traditions at a traditional Thai dance performance. You might even find a local artisan crafting intricate souvenirs!
Food & nightlife
Prepare your taste buds for a culinary adventure! From the bustling night markets of Chaweng to the beachside restaurants in Bophut, you'll find a delightful mix of Thai flavors and fresh seafood. As the sun sets, Ko Samui comes alive with beach bars, clubs, and fire shows for an unforgettable night out.
Shopping & fashion
Shopaholics, rejoice! Ko Samui offers a diverse shopping scene, from the modern Central Festival Samui mall to the charming Fisherman’s Village Walking Street. Discover unique clothing, handcrafted jewelry, and souvenirs to remember your island escape. Be sure to bargain for the best deals!
Nearby getaways
Ready for a little island hopping? Take a short boat trip to Koh Phangan, famous for its Full Moon Party and pristine beaches. Or, escape to the tranquility of Koh Tao, a diver's paradise with crystal-clear waters and vibrant coral reefs. These nearby islands offer a change of pace and even more stunning scenery.
Events in Ko Samui This Month
zamna on the beach
Get your tickets now for Zamna on the Beach at CLUB SEEN Koh Samui on February 21, 2026, featuring Goom Gum, Alfa Romero, and many more talented artists for an unforgettable beachside music experience.
Ko Samui Weather
Weather in Ko Samui
Fri, Feb 13
10%
28° 27°
10%
Sat, Feb 14
Frequently Asked Questions About Flights to Ko Samui
Pro Tips for Finding Cheap Flights to Ko Samui
Finally, to wrap up, here’s a cheat sheet of pro tips that experienced travelers use to save on Ko Samui flights:
Be Flexible With Your Dates: Flying on weekdays or during the off-season can save you a bundle. Think of it as outsmarting the crowds!
Set Up Price Alerts: Use RatePunk to track flight prices! You'll be the first to know when prices drop, snagging that dream deal.
