USM

฿2,071 Find Cheap Flights to Ko Samui – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
฿4,340
Typical prices: ฿6,258-฿10,364
Bangkok Airways
Mon 15/10Fri 19/10
HKT - USM • Direct
Cheapest one-way flight
฿2,071
Typical prices: ฿3,808-฿7,924
Bangkok Airways
Sun 21/10
KBV - USM • Direct
Direct flights
You can fly direct with Bangkok Airways. Average duration is 1h 12m
FAQs
FAQs
Top airlines
Most flights • 244 per week
Best reviews • 8.1 score
Airline reviews
+1
Airline reviews
+1
Top routes
Cheapest • 34% average savings
Most popular
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 26 weeks in advance save around 39% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 21% price drop
Most popular
Good to know
+1
Good to know
+1
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We hope you enjoy your trip to Ko Samui!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights to Ko Samui

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals to Ko Samui

Thu 15 Oct - Mon 19 Oct
Bangkok Airways Logo
19:30 - 20:25HKT  Phuket City-USM Ko Samui
0h 55mdirect
Bangkok Airways Logo
17:55 - 18:55USM  Ko Samui-HKT Phuket City
1h 00mdirect
฿4,340Bangkok Airways
Wed 7 Oct - Wed 14 Oct
Bangkok Airways Logo
09:35 - 10:30HKT  Phuket City-USM Ko Samui
0h 55mdirect
Bangkok Airways Logo
19:00 - 20:00USM  Ko Samui-HKT Phuket City
1h 00mdirect
฿4,340Bangkok Airways
Thu 15 Oct - Mon 19 Oct
Bangkok Airways Logo
19:30 - 20:25HKT  Phuket City-USM Ko Samui
0h 55mdirect
Bangkok Airways Logo
17:55 - 18:55USM  Ko Samui-HKT Phuket City
1h 00mdirect
฿4,702Bangkok Airways
Sun 1 Nov - Sun 8 Nov
Bangkok Airways Logo
17:30 - 18:25HKT  Phuket City-USM Ko Samui
0h 55mdirect
Bangkok Airways Logo
18:15 - 19:15USM  Ko Samui-HKT Phuket City
1h 00mdirect
฿4,702Bangkok Airways
Fri 23 Oct - Fri 30 Oct
Bangkok Airways Logo
19:30 - 20:25HKT  Phuket City-USM Ko Samui
0h 55mdirect
Bangkok Airways Logo
18:15 - 19:15USM  Ko Samui-HKT Phuket City
1h 00mdirect
฿4,800Bangkok Airways
Thu 15 Oct - Mon 19 Oct
Bangkok Airways Logo
17:05 - 18:00HKT  Phuket City-USM Ko Samui
0h 55mdirect
Bangkok Airways Logo
17:55 - 18:55USM  Ko Samui-HKT Phuket City
1h 00mdirect
฿4,833Bangkok Airways
Mon 19 Oct - Fri 23 Oct
Bangkok Airways Logo
19:30 - 20:25HKT  Phuket City-USM Ko Samui
0h 55mdirect
Bangkok Airways Logo
17:55 - 18:55USM  Ko Samui-HKT Phuket City
1h 00mdirect
฿4,899Bangkok Airways
Sat 17 Oct - Wed 21 Oct
Bangkok Airways Logo
19:30 - 20:25HKT  Phuket City-USM Ko Samui
0h 55mdirect
Bangkok Airways Logo
17:55 - 18:55USM  Ko Samui-HKT Phuket City
1h 00mdirect
฿5,031Bangkok Airways
Thu 8 Oct - Mon 12 Oct
Multiple Airlines Logo
08:30 - 14:55HKT  Phuket City-USM Ko Samui
6h 25m1 stop Bangkok Don Mueang Intl
Multiple Airlines Logo
08:00 - 09:00USM  Ko Samui-HKT Phuket City
1h 00mdirect
฿5,754Multiple Airlines
Fri 30 Oct - Sat 21 Nov
Multiple Airlines Logo
13:10 - 17:30BKK  Bangkok Suvarnabhumi-USM Ko Samui
4h 20m1 stop Phuket City
Multiple Airlines Logo
14:05 - 15:20USM  Ko Samui-BKK Bangkok Suvarnabhumi
1h 15mdirect
฿5,787Multiple Airlines
Booking Insights

Price, demand, and travel trends for Thailand to Ko Samui flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Thailand to Ko Samui with more confidence.

What is the cheapest flight to Ko Samui?

Phuket City to Ko Samui is the cheapest route at ฿4,340 return, found in the past 5 days on KAYAK. Bangkok Suvarnabhumi Airport to Ko Samui is the most popular connection with return deals from ฿5,787.

How much is a flight to Ko Samui?

A return flight to Ko Samui costs ฿8,099 on average, based on data over the past 12 months on KAYAK. Return fares from Phuket City average ฿7,658, while Rayong runs a bit higher at ฿8,140.

What is the cheapest day to fly to Ko Samui?

Tuesday is the cheapest day to fly to Ko Samui at ฿8,220 return on average over the past 12 months on KAYAK. Saturday is the most expensive at ฿8,549.

What is the cheapest month to fly to Ko Samui?

  • May is the cheapest month to fly to Ko Samui with an average price of ฿6,379 return.
  • August (฿9,437) and December (฿9,141) are the most expensive.
  • Based on KAYAK data over the past 12 months.

What is the cheapest time of day to fly to Ko Samui?

Morning flights to Ko Samui are the cheapest at ฿8,121 return on average. Night flights are the most expensive at ฿9,798.

What is a good deal for flights to Ko Samui?

Flights under ฿6,258 are considered a good deal. 25% of KAYAK users found return flights to Ko Samui at or below these prices, with the lowest fares from:

  • Bangkok Suvarnabhumi Airport ฿6,091
.

When are flights to Ko Samui the cheapest?

Flights to Ko Samui are cheapest 26 weeks before departure. Booking in this window typically costs about 39% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for flights to Ko Samui

Low season

October

Cheapest flight

฿2,071
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly (10% more expensive on average)
Flights from Krabi to Ko Samui

When to book flights to Ko Samui

Are your dates flexible? Find out the best times to travel to Ko Samui based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your questions about flights to Ko Samui, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • What is the difference between the most popular and the most frequent airline at Ko Samui?

    Bangkok Airways operates the most flights from Thailand to Ko Samui at 244 per week, and for this route Bangkok Airways is also the airline most often selected by KAYAK users searching for flights from Thailand to Ko Samui. The two are sometimes different because flight volume reflects an airline's schedule, while popularity reflects traveller choice.

  • How long are direct flights to Ko Samui from different departure cities?

    Direct flight time to Ko Samui varies depending on your departure city:
    • from Bangkok Suvarnabhumi Airport: 1h 05m
    • from Krabi: 0h 45m
    • from Phuket City: 0h 55m
    • from Rayong: 1h 05m
    • from Chiang Mai: 1h 45m

  • Where can I fly from to get the cheapest fares to Ko Samui?

    Based on fares booked in the past 5 days, the cheapest flights to Ko Samui are from:
    • Bangkok, from ฿5,787 return

  • How many flights serve Ko Samui?

    Ko Samui receives 35 flights per day and 244 per week from across the world. Bangkok Suvarnabhumi Airport has the most flights to Ko Samui with 152 weekly flights.

  • How do I know if a flight to Ko Samui is a good deal?

    A good deal on a flight to Ko Samui is around ฿6,258 return. This fare is in the lowest 25% of return flight prices searched on KAYAK, averaged across the cities most often searched as origins by KAYAK users.

  • How expensive are last-minute flights to Ko Samui?

    Last-minute fares to Ko Samui – booked within 2 weeks of departure – run 22% above the average return fare of ฿8,099.

  • Which airlines should I consider for flights to Ko Samui?

Your guide to booking Ko Samui flights

From booking to airport arrival, find tips to help you plan your flight with more confidence.
  • For the best chance at a low fare to Ko Samui, aim to book around 26 weeks before you fly. That window historically saves about 39% versus last-minute pricing based on KAYAK booking data over the last 12 months.
  • For flights to Ko Samui, recent KAYAK data shows that stronger deals tend to be around ฿6,258 return. If you see a fare below that threshold, it's a good deal – book before the price climbs back up.
  • If you can choose when to go, aim to travel to Ko Samui in May. Return fares historically average ฿6,379 that month – typically the cheapest month to travel based on the last 12 months.
  • Before you book:

    • Check the route's typical price range so you can spot a deal.
    • Confirm baggage fees and seat selection costs on budget carriers.
    • Verify whether you need any travel documents beyond an ID.
    • Pick a departure airport, since your nearest may not be the cheapest origin.
  • Shift your departure to morning to save up to ฿1,677 per return. Morning flights to Ko Samui average ฿8,121 compared to ฿9,798 for evening flights. See the time-of-day chart above for the full breakdown.
  • Bag allowances vary by airline, fare type, cabin class, and route. On flights to Ko Samui, some airlines may include bags at no extra cost. For example, Bangkok Airways includes a cabin bag and a checked bag in Economy class, Thai Airways includes a cabin bag and a checked bag in Economy class, and โอมานแอร์ includes a cabin bag and a checked bag in Economy class. Always check the fare details before booking, since bag policies can change by ticket type.
  • Once you arrive in Ko Samui, a few great places to start are Chaweng Beach, Lamai Beach, and Hin Ta and Hin Yai Rocks. These are popular with first-time visitors and can give you a good feel for the area.

Reviews of the top airline flying to Ko Samui

 
Need help choosing which airline to fly with to Ko Samui? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.1
Bangkok AirwaysOverall score based on 133 reviews
7.9Comfort
6.3Entertainment
8.6Crew
7.3Food
8.1Boarding
Airline reviews

Excellent airline. Seats were very comfortable with lots of legroom. In flight service was excellent as well

10.0 Excellentpuravi, Jan 2026
Read more Bangkok Airways reviews

Excellent airline. Seats were very comfortable with lots of legroom. In flight service was excellent as well

We were pleased with the flight experience. Nothing to complain or shout about. Unfortunately the rating scale in this survey will skew the results and give a false impression of what really happened. For example, we didn’t use the entertainment system yet we are forced to reply. A far more insightful scale would include “not applicable.”

We flew business class this time. The food in their economy class is much better in general. Also only coffee, tea and orange juice is free. Beer can be bought only. Same as economy, so their business class service is poor.

Nice flight, stress-free but why bother serving a meal on a 55 minute flight. From what I saw there was a lot of waste because travellers weren't interesting in eating on this short trip. Get rid of the meal and cut the price.

Efficient, comfortable and clean-very good flight with friendly staff and crew

On a 45 mins flight to Koh Samui from Bangkok we were served delicious shrimp pad thai and hot tea. The flight crew did an awesome job serving a full flight.

Seats are tight and leg room so small. We had deep impressions under kneecap from the seat in front. A sign that Bangkok Airways is fully aware how small it is built is the cutout in the table. Very uncomfortable for people in size 1.80 m or more.

This is my 2nd flight with this airline. Service is very good. I was surprised they served a meal on such a short flight. The airplane landed so smooth that most people were unaware the plane had just landed. About half of the people on board applauded.

The staff were helpful and very pleasant. The food is tasty and there’s plenty of water provided. Flights are well air conditioned.

I fly Bangkok Air regularly. Could say I am loyal to their airlines and program. The only two comments of critique I could offer is (1) using the credits from accumulated miles is not as streamlines as some of the other airlines programs I am or have been a member of... and have lost opportunity to use them before expiration. (2) Sometimes, the plane is boarded / un-boarded with a service bus that has to navigate the airport and adds unwelcomed overhead time (especially during de-boarding). If have checked luggage this is transparent; if only have carry-on will slow your departure from Suvarnabhumi by ~20 minutes or more. Otherwise, a fine airline.

Travelling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Ko Tao
Khanom
Ko Pha Ngan

More options for your flight to Ko Samui