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₹ 18,593+ Cheap flights to Ko Samui

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 21/5. Fares are subject to change and may not be available on all flights or dates of travel.
— USM
21 Mar — 28 Mar1
1 adult
1 adult, Economy, 0 bags

Flights to Ko Samui in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Ko Samui
Explore the most affordable flight options available to Ko Samui. Find the lowest fares based on data from user searches, with prices last updated on 19 February 2026.

Fri 22/523:20
DEL
-
USM
2 stops31h 35m
Multiple Airlines
Mon 29/606:55
USM
-
DEL
1 stop10h 45m
Multiple Airlines
Deal found 17/2₹ 39,544
Thu 21/523:35
DEL
-
USM
2 stops30h 05m
Multiple Airlines
Mon 29/606:55
USM
-
DEL
1 stop10h 45m
Multiple Airlines
Deal found 18/2₹ 40,088
Thu 21/523:35
DEL
-
USM
2 stops30h 05m
Multiple Airlines
Tue 30/607:50
USM
-
DEL
1 stop14h 35m
Multiple Airlines
Deal found 17/2₹ 41,448
Wed 20/500:05
DEL
-
USM
2 stops19h 15m
Multiple Airlines
Fri 3/707:50
USM
-
DEL
2 stops40h 35m
Multiple Airlines
Deal found 18/2₹ 41,539

Find flight deals to Ko Samui

Find the latest flights to Ko Samui in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 454,620 searches and data was last updated on 19 February 2026.

Return from

₹ 39,544

One-way from

₹ 18,593

Popular in

March

Cheapest in

August

Average price

₹ 56,050
22/5-29/6
  • 22/5-29/6
  • 3 total stops
  • 42h 20m total
  • New Delhi to Ko Samui
Search Deals
21/5
  • 21/5
  • 2 total stops
  • 30h 05m total
  • New Delhi to Ko Samui
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (₹ 10,376 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (₹ 1,895 potential savings vs. average return price).
Search Deals
Average for return flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Ko Samui that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 454,620 searches and data was last updated on 19 February 2026.
Use the filters below to find and compare flights to Ko Samui that are best for you.

Fly from

New Delhi

Route

Depart

Return

Price

New DelhiKo Samui

DEL - USM

DELUSM

New Delhi Indira Gandhi Intl

Fri 22/5

23:20-08:25

2 stops31h 35m

Ko Samui

Mon 29/6

06:55-16:10

1 stop10h 45m

₹ 39,544

New DelhiKo Samui

DEL - USM

DELUSM

New Delhi Indira Gandhi Intl

Thu 21/5

23:35-07:10

2 stops30h 05m

Ko Samui

Mon 29/6

06:55-16:10

1 stop10h 45m

₹ 40,088

New DelhiKo Samui

DEL - USM

DELUSM

New Delhi Indira Gandhi Intl

Thu 21/5

23:35-07:10

2 stops30h 05m

Ko Samui

Tue 30/6

07:50-20:55

1 stop14h 35m

₹ 41,448

New DelhiKo Samui

DEL - USM

DELUSM

New Delhi Indira Gandhi Intl

Wed 20/5

00:05-20:50

2 stops19h 15m

Ko Samui

Fri 3/7

07:50-22:55

2 stops40h 35m

₹ 41,539

New DelhiKo Samui

DEL - USM

DELUSM

New Delhi Indira Gandhi Intl

Thu 12/3

16:10-07:50

1 stop14h 10m

Ko Samui

Sun 15/3

19:00-19:50

2 stops26h 20m

₹ 44,804

New DelhiKo Samui

DEL - USM

DELUSM

New Delhi Indira Gandhi Intl

Thu 2/4

14:30-07:30

1 stop15h 30m

Ko Samui

Thu 9/4

14:00-20:55

1 stop8h 25m

₹ 45,258

New DelhiKo Samui

DEL - USM

DELUSM

New Delhi Indira Gandhi Intl

Sun 22/3

17:10-07:50

1 stop13h 10m

Ko Samui

Thu 26/3

08:55-23:40

1 stop16h 15m

₹ 45,258

New DelhiKo Samui

DEL - USM

DELUSM

New Delhi Indira Gandhi Intl

Thu 21/5

23:35-07:10

2 stops30h 05m

₹ 18,593

New DelhiKo Samui

DEL - USM

DELUSM

New Delhi Indira Gandhi Intl

Thu 30/7

23:35-07:10

2 stops30h 05m

₹ 18,774

New DelhiKo Samui

DEL - USM

DELUSM

New Delhi Indira Gandhi Intl

Sat 13/6

23:35-07:10

2 stops30h 05m

₹ 19,137

Flights are sorted by cheapest return flights first.

Deals found on 18/2

Showing 1-10 of 15 results
1
2

Best time to book a flight to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight to Ko Samui

What are the cheapest airlines that fly to Ko Samui?

The cheapest airlines flying from New Delhi to Ko Samui are Air India and Thai Airways.

Reviews of airlines servicing Ko Samui

Get insights into the airlines that provide service to Ko Samui. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ko Samui. Reviews last updated 19 February 2026.
Read reviews from past customers who have flown Thai Airways and Air India to Thailand. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Thai Airways
7.8
Good
382 reviews
Check prices

Crew

8.4

Entertainment

6.8

Boarding

7.9

Comfort

7.6

Food

7.4

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Virendra,Jan 2026

DEL - BKK

Having required wheel chair assistance, I received amazing service from the ground and cabin staff. Everything was a breeze. Flight was comfortable but the entertainment system was quite dated. The chicken noodles served was amazing
Thai Airways
7.8
Good
382 reviews
Thai Airways
7.8
Good
382 reviews
Check prices

Crew

8.4

Entertainment

6.8

Boarding

7.9

Comfort

7.6

Food

7.4

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Virendra,Jan 2026

DEL - BKK

Having required wheel chair assistance, I received amazing service from the ground and cabin staff. Everything was a breeze. Flight was comfortable but the entertainment system was quite dated. The chicken noodles served was amazing
Air India
5.5
Fair
2,967 reviews
Thai Airways
7.8
Good
382 reviews
Check prices

Crew

8.4

Entertainment

6.8

Boarding

7.9

Comfort

7.6

Food

7.4

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Virendra,Jan 2026

DEL - BKK

Having required wheel chair assistance, I received amazing service from the ground and cabin staff. Everything was a breeze. Flight was comfortable but the entertainment system was quite dated. The chicken noodles served was amazing

FAQs about flying to Ko Samui

  • What airport do you fly into for flights to Ko Samui?

    Booking a flight to Ko Samui (USM) is your only option if you intend on flying to Ko Samui. It is only a 3.3 km journey from Ko Samui to Ko Samui’s city centre.

  • Can I find cheaper flights to Ko Samui if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Ko Samui on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Ko Samui?

    Based on reviews from Cheapflights users, Singapore Airlines is rated the highest out of the airlines that fly to Ko Samui.

  • What is the cheapest airport to fly to in Ko Samui?

    Ko Samui is currently the cheapest airport to fly to in Ko Samui. One-way flights to Ko Samui typically cost ₹ 8,943, while return flights cost around ₹ 13,142.

  • How much is a return flight to Ko Samui?

    A return flight to Ko Samui will typically cost around ₹ 15,771, however they can be found for as little as ₹ 13,142.

  • Where does the fastest flight to Ko Samui depart from?

    For those looking to save time traveling to Ko Samui, Kolkata Netaji S. Chandra offers the quickest one-way flight (5 hours 40 minutes).

  • Does Ko Samui have rental cars?

    Yes. Those touching down at Ko Samui can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Ko Samui?

    Yes. Ko Samui has hotels nearby for those requiring accommodations. Diamond Pool Villa Samui is the closest property to Ko Samui (0.0 km away from Ko Samui).

See more FAQs

Travelling to a place near Ko Samui?

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

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How does Cheapflights help users find flights to Ko Samui?

Cheapflights makes it easy to find Ko Samui flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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Millions of users choose and trust Cheapflights to book the best flight deals to Ko Samui for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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Yes, we can. To see specific flights to Ko Samui with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights to Ko Samui become cheaper?

Yes, Cheapflights has a feature called Price Alerts, which notifies users when flight prices change. Track prices for your flight to Ko Samui today and book when you’re ready!

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