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Ko Samui

$764+ Cheap flights from Key Largo, FL to Ko Samui (USM)

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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — USM
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find flight deals from Key Largo to Ko Samui

Cheapest flights from Key Largo to Ko Samui
Explore the most affordable flight options available from Key Largo to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This oojo deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1910:20 amMIA - USM
2 stops43h 55mTurkish Airlines
Wed 11/266:15 pmUSM - MIA
2 stops38h 20mTurkish Airlines
Deal found 10/29$1,436
This oojo deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:15 amMIA - USM
2 stops49h 20mCathay Pacific
Wed 11/2611:40 amUSM - MIA
2 stops31h 05mCathay Pacific
Deal found 10/29$1,485
This oojo deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2511:32 amMIA - USM
2 stops44h 03mCathay Pacific
Sat 12/611:40 amUSM - MIA
2 stops32h 08mCathay Pacific
Deal found 10/30$1,521
This Qatar Airways deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3011:30 pmMIA - USM
2 stops31h 55mQatar Airways
Mon 11/33:05 pmUSM - MIA
2 stops37h 20mQatar Airways
Deal found 10/28$1,698
This Gotogate deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1410:00 pmMIA - USM
2 stops35h 05mBritish Airways
Sun 12/211:25 pmUSM - MIA
2 stops37h 15mBritish Airways
Deal found 10/30$2,089
This Gotogate deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/147:40 pmMIA - USM
3 stops32h 45mMultiple Airlines
Sun 12/219:10 pmUSM - MIA
2 stops32h 29mMultiple Airlines
Deal found 10/30$2,262
This British Airways deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1910:00 pmMIA - USM
2 stops35h 05mBritish Airways
Sun 1/114:25 pmUSM - MIA
2 stops34h 15mBritish Airways
Deal found 10/30$8,134
This oojo deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1910:30 pmMIA - USM
2 stops34h 20mMultiple Airlines
Sun 1/117:00 amUSM - MIA
2 stops36h 00mMultiple Airlines
Deal found 10/29$8,769
This business-class.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure business-class.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/191:40 pmMIA - USM
3 stops30h 25mJapan Airlines
Sun 1/118:20 pmUSM - MIA
3 stops36h 00mJapan Airlines
Deal found 10/29$13,209

Cheap flight deals from Key Largo to Ko Samui

Keep the following information in mind while searching for Key Largo to Ko Samui flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,436
(oojo)

One-way from

$764
(FlightHub)
Provider with most accurate pricing for Miami-Ko Samui flight deals.
Search Deals
Provider most trusted by Cheapflights users for Miami-Ko Samui flights.
Search Deals
From Key Largo to Ko Samui
Search Deals
One-way flight from Key Largo to Ko Samui
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to Ko Samui that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Key Largo to Ko Samui that are best for you.

Fly from

Key Largo

Fly to

Ko Samui

Route

Depart

Return

Price

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Wed 11/19

10:20 am-6:15 pm

2 stops43h 55m

Ko Samui

Wed 11/26

6:15 pm-8:35 pm

2 stops38h 20m

$1,436

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Wed 11/19

6:15 am-7:35 pm

2 stops49h 20m

Ko Samui

Wed 11/26

11:40 am-6:45 am

2 stops31h 05m

$1,485

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Thu 11/13

9:37 am-7:35 pm

2 stops45h 58m

Ko Samui

Mon 11/17

11:40 am-6:45 am

2 stops31h 05m

$1,521

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Tue 11/25

6:50 pm-7:35 pm

2 stops36h 45m

Ko Samui

Sat 12/6

11:40 am-6:52 am

2 stops31h 12m

$1,521

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Tue 2/10

7:15 pm-10:40 am

2 stops27h 25m

Ko Samui

Thu 2/19

6:15 pm-4:25 pm

2 stops34h 10m

$1,618

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Sun 3/22

6:15 pm-8:40 am

3 stops27h 25m

Ko Samui

Fri 3/27

6:30 pm-5:39 pm

2 stops34h 09m

$1,898

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Sun 12/14

10:00 pm-9:05 pm

2 stops35h 05m

Ko Samui

Sun 12/21

1:25 pm-2:40 pm

2 stops37h 15m

$2,089

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Sun 12/14

7:40 pm-4:25 pm

3 stops32h 45m

Ko Samui

Sun 12/21

9:10 pm-5:39 pm

2 stops32h 29m

$2,262

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Fri 12/19

10:00 pm-9:05 pm

2 stops35h 05m

Ko Samui

Sun 1/11

4:25 pm-2:40 pm

2 stops34h 15m

$8,134

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Mon 2/9

7:15 pm-10:40 am

2 stops27h 25m

$764

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Best time to book a flight from Key Largo to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from Key Largo with our price prediction graph.
Estimated round-trip 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 from Key Largo to Ko Samui

What is the cheapest time of day to fly from KE9 to USM?

Find hourly flight availability from Key Largo to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 21% on flights from Key Largo to Ko Samui by exploring options for tickets in the evening.

What is the cheapest day to fly from Key Largo to Ko Samui?

Use this chart to determine the cheapest time to fly round-trip from Key Largo to Ko Samui. Price data was last updated on March 30, 2025.

Travelers seeking maximum savings on their Key Largo to Ko Samui flight should consider departing on Thursday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Key Largo to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Located just 2.1 mi from the city center, Ko Samui is the airport most travelers will use when flying to Ko Samui from Key Largo. Booking flights from Key Largo to Ko Samui (USM) should be relatively easy as there are 0 daily inbound flights from Key Largo from 0 different airlines.

  • How long is the flight from Key Largo to Ko Samui?

    A quick flight from Key Largo to Ko Samui can take about 43h 55m. Turkish Airlines provides one of the quickest options available for as low as $1,436. There are 9988 mi between Key Largo and Ko Samui. This flight may include one or multiple stops.

  • Can I find deals for flights from Key Largo to Ko Samui that include hotel bookings?

    Yes. In addition to deals on Key Largo to Ko Samui flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Key Largo to Ko Samui?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key Largo to Ko Samui.

  • Can I find deals for business class flights from Key Largo to Ko Samui?

    Yes. Cheapflights offers flight deals from Key Largo to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Ko Samui?

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

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