Find cheap flights to Ko Samui from £472

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Find deals from Washington, D.C. to Ko Samui

Find one-way and return tickets at the lowest prices, whether last-minute or planned in advance.

2 stops
Sun, Feb 8
Washington, D.C. IADKo Samui USM

from £472
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3 stops
Sat, Feb 7
Washington, D.C. IADKo Samui USM

from £487
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2 stops
Fri, Feb 6
Washington, D.C. IADKo Samui USM

from £489
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2 stops
Sat, Feb 7
Washington, D.C. IADKo Samui USM

from £499
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2 stops
Fri, Feb 6
Washington, D.C. IADKo Samui USM

from £504
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2 stops
Sat, Feb 7
Washington, D.C. IADKo Samui USM

from £514
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Find deals from Washington, D.C. to Ko Samui

Find one-way and return tickets at the lowest prices, whether last-minute or planned in advance.

2 stops
Sun, Feb 8 – Fri, Feb 13
Washington, D.C. IADKo Samui USM

from £974
Find deal
2 stops
Sun, Feb 8 – Fri, Feb 13
Washington, D.C. IADKo Samui USM

from £988
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2 stops
Sun, Feb 8 – Fri, Feb 13
Washington, D.C. IADKo Samui USM

from £991
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2 stops
Fri, Feb 6 – Wed, Feb 11
Washington, D.C. IADKo Samui USM

from £1,000
Find deal
2 stops
Fri, Feb 6 – Fri, Feb 13
Washington, D.C. IADKo Samui USM

from £1,000
Find deal
2 stops
Fri, Feb 6 – Wed, Feb 11
Washington, D.C. IADKo Samui USM

from £1,016
Find deal

Cheapest time to fly from Washington, D.C. to Ko Samui

One-way

Thu, Jan 8 - Thu, Jan 15£507
Fri, Jan 16 - Fri, Jan 23£428
Sat, Jan 24 - Sat, Jan 31£455
Sun, Feb 1 - Sat, Feb 7£439
Sun, Feb 8 - Sun, Feb 15£437
Mon, Feb 16 - Mon, Feb 23£403
Tue, Feb 24 - Sat, Feb 28£399
Sun, Mar 1 - Sat, Mar 7£386
Sun, Mar 8 - Sun, Mar 15£366
Mon, Mar 16 - Mon, Mar 23£362
Tue, Mar 24 - Tue, Mar 31£455

Round-trip

Thu, Jan 8 - Thu, Jan 15£774
Fri, Jan 16 - Fri, Jan 23£734
Sat, Jan 24 - Sat, Jan 31£782
Sun, Feb 1 - Sat, Feb 7£779
Sun, Feb 8 - Sun, Feb 15£842
Mon, Feb 16 - Mon, Feb 23£741
Tue, Feb 24 - Sat, Feb 28£737
Sun, Mar 1 - Sat, Mar 7£684
Sun, Mar 8 - Sun, Mar 15£641
Mon, Mar 16 - Mon, Mar 23£642
Tue, Mar 24 - Tue, Mar 31£767

When is the best time to visit Ko Samui

Ko Samui's best time depends on your priorities: December–February offers perfect beach weather but peak prices, May–October brings monsoon rains with 40% savings, and March–April plus November balance sunshine with moderate flight costs and fewer crowds.

High season
December - February
  • Prices: Peak rates for flights and hotels; book 8-12 weeks ahead for better deals, avoid Christmas and New Year weeks.
  • Weather: Ideal conditions with 24–30 °C, low humidity, and just 4–8 rainy days per month—perfect beach weather.
  • Events: New Year festivities at Chaweng Beach, Chinese New Year parades in Fisherman's Village, and monthly Full Moon Parties on neighboring Koh Phangan.
Low season
May - October
  • Prices: Cheapest flights and accommodation—up to 40% less than peak season; September-October offer the steepest discounts despite heavier rainfall.
  • Weather: Warm 25–32 °C but monsoon season brings 12–18 rainy days monthly with afternoon downpours; mornings often clear for beach time.
  • Events: Annual Samui Regatta (late May-early June) draws sailing enthusiasts, while Friday night Fisherman's Village Walking Street continues year-round with fewer tourists.
Shoulder season
March - April, November
  • Prices: Moderate rates with flights 20-30% cheaper than peak; book November early as prices climb toward December, while April offers post-peak savings.
  • Weather: Warm 24–31 °C with 8–10 rainy days monthly—transitional conditions mean sunny mornings with occasional showers, ideal for beach and exploration.
  • Events: Songkran water festival (mid-April) island-wide, Loy Krathong floating lanterns (November), and weekly Fisherman's Village Walking Street with comfortable crowds.

Ko Samui travel tips

Ko Samui: A Tropical Treasure Worth the Journey

Imagine stepping onto white sandy beaches, surrounded by turquoise waters and swaying palm trees. This is Ko Samui, a haven of natural beauty and laid-back culture, beckoning seasoned travelers and first-time visitors alike. Renowned for its vibrant nightlife, indulgent spas, and mouth-watering cuisine, Ko Samui effortlessly combines luxury with authenticity. Whether you're looking to unwind in a beach bungalow or dive into bustling markets, Kiwi.com makes it simpler to find affordable flights to this island oasis. Set your sights on Ko Samui, where every corner tells a new story waiting to be discovered.

First Footsteps on the Island: What to Do After Landing

Once your flight touches down at Samui International Airport, the island's charm is immediately apparent. Begin your journey with a visit to the Big Buddha—a towering symbol of serenity offering panoramic views of the coastline. For those drawn to the water's allure, head to Chaweng Beach. Here, lively atmospheres meet tranquil spots, giving you a choice of revelry or relaxation. Kiwi.com ensures your flight lands you conveniently at the heart of Ko Samui's vibrant offerings, with timings to suit your schedule. Embrace the island life from your first moment with Kiwi highlighting smart layovers and route hacks that bring Ko Samui closer than ever.

When to Fly: Timing Your Visit for Maximum Adventure

The best time to explore Ko Samui is during its dry season, from December to February, when sunshine graces the island. For budget travelers, the shoulder season from March to April offers cheaper flights while still promising delightful weather. Plan to book your flights about 6 to 8 weeks in advance using Kiwi's price alerts—ensuring you don't miss out on any hidden deals. With flight durations averaging around 12-15 hours from major European hubs, exploring this paradise is more accessible with Kiwi.com's disrupt-safe bookings and multi-destination flexibility, perfect for adding Ko Samui into a larger Southeast Asian adventure.

Airports and Airlines: Navigating Your Path to Paradise

Ko Samui's gateway is the charming Samui International Airport, renowned for its open-air design and easy navigation. Conveniently served by a mix of budget and full-service carriers, finding the right flight is as simple as tapping into Kiwi.com's flexible search. Whether you're flying direct or via smart layovers, Kiwi manages the logistics with tools like the Nomad Search Tool. Upon arrival, swift access to taxis or shared shuttles ensures you're never more than a short ride from your chosen destination on the island.

Smart Travel Tips for Your Ko Samui Adventure

  • Book Early for Best Deals: Use Kiwi Price Alerts to catch flights during the less crowded shoulder seasons.
  • Flexible Routes: Try Kiwi's Nomad Search Tool for multi-stop flights across Southeast Asia.
  • Carry Cash: Many local spots prefer cash over cards, so prep in advance.
  • Stay Connected: A local SIM card can save you high roaming fees.
  • Embrace Island Time: While delays might happen, Kiwi’s Kiwi Guarantee ensures you’re covered.
  • Set Up Disruption Alerts: Utilize Disruption Protection to handle unexpected changes effortlessly.

Kiwi.com customers' reviews 4.5/5

Hear from customers who value our easy-to-use platform and helpful support team, ensuring smooth travel planning and flight management. 1905 total reviews.

EA

Eduardo A.

I recommend it, I really had a great time.

AW

Anne-Marie W.

Kiwi my friend! very good experience! everything went perfectly. I recommend !

NL

Nathalie L.

Very nice performance. I recommend it to my loved ones

PB

Philippe B.

Very quick response when asked a question and simple

AM

Araceli M.

Good service and good price on their flights

LB

Luis Eduardo B.

It was very quick and easy to book

Weather in Ko Samui

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January27°C26°C
February27°C26°C
March28°C27°C
April29°C28°C
May30°C28°C
June29°C28°C
July29°C27°C
August29°C27°C
September29°C27°C
October28°C27°C
November28°C26°C
December27°C26°C
Hottest Month
30°C
May
Coldest month
26°C
January
Sunny days
191
days per year

14 day forecast

Saturday
17 Jan
27°C26°C
24 Jan
27°C27°C
Sunday
18 Jan
27°C26°C
25 Jan
27°C26°C
Monday
19 Jan
89%
27°C26°C
26 Jan
27°C26°C
Tuesday
20 Jan
27°C26°C
27 Jan
89%
27°C26°C
Wednesday
21 Jan
83%
27°C26°C
28 Jan
87%
27°C27°C
Thursday
22 Jan
88%
27°C26°C
29 Jan
27°C27°C
Friday
23 Jan
88%
27°C26°C
30 Jan
86%
27°C27°C

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Frequently asked questions

Main airports in Ko Samui, Thailand
Getting from the airport to Ko Samui, Thailand
Best time of year to fly to Ko Samui, Thailand
Things to do in Ko Samui, Thailand
When to book your flight to Ko Samui, Thailand
Ideal duration for staying in Ko Samui, Thailand
Top tourist attractions in Ko Samui, Thailand
Safety walking at night in Ko Samui, Thailand
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