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Ko Samui

$594+ 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 3/24. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — USM
Mar 7 — Mar 141
Sat 3/7
Sat 3/14
1 adult, Economy
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Cheap 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 February 5, 2026.

This oojo deal was found by Cheapflights users on 2/4. 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 3/1811:20 am
MIA
-
USM
2 stops44h 05m
Multiple Airlines
Wed 5/208:50 pm
USM
-
MIA
2 stops34h 45m
Multiple Airlines
Deal found 2/4$1,382
This oojo deal was found by Cheapflights users on 2/4. 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.
Mon 3/3010:35 am
MIA
-
USM
2 stops35h 00m
Multiple Airlines
Mon 6/19:00 pm
USM
-
MIA
2 stops34h 35m
Multiple Airlines
Deal found 2/4$1,416
This FlightHub deal was found by Cheapflights users on 2/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2110:30 pm
MIA
-
USM
2 stops29h 15m
Turkish Airlines
Sun 4/267:50 am
USM
-
MIA
2 stops34h 20m
Turkish Airlines
Deal found 2/4$1,425
This FlightHub deal was found by Cheapflights users on 2/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1711:30 pm
MIA
-
USM
2 stops31h 00m
Multiple Airlines
Wed 5/205:25 pm
USM
-
MIA
2 stops28h 05m
Multiple Airlines
Deal found 2/4$1,447
This FlightHub deal was found by Cheapflights users on 2/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2310:30 pm
MIA
-
USM
2 stops29h 40m
Turkish Airlines
Sun 4/268:10 am
USM
-
MIA
2 stops34h 00m
Turkish Airlines
Deal found 2/4$1,452
This KAYAK deal was found by Cheapflights users on 2/4. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1511:20 am
MIA
-
USM
2 stops34h 20m
Turkish Airlines
Mon 5/183:25 pm
USM
-
MIA
2 stops40h 10m
Turkish Airlines
Deal found 2/4$1,475
This Turkish Airlines deal was found by Cheapflights users on 2/1. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:35 am
MIA
-
USM
2 stops35h 00m
Turkish Airlines
Mon 9/215:50 pm
USM
-
MIA
2 stops37h 45m
Turkish Airlines
Deal found 2/1$1,477
This KAYAK deal was found by Cheapflights users on 2/4. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1811:20 am
MIA
-
USM
2 stops33h 45m
Turkish Airlines
Tue 5/199:15 am
USM
-
MIA
2 stops46h 20m
Turkish Airlines
Deal found 2/4$1,486
This FlightHub deal was found by Cheapflights users on 2/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/317:40 pm
MIA
-
USM
2 stops28h 05m
Multiple Airlines
Mon 6/12:30 pm
USM
-
MIA
2 stops31h 00m
Multiple Airlines
Deal found 2/4$1,493
This KAYAK deal was found by Cheapflights users on 2/4. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1511:20 am
MIA
-
USM
2 stops33h 45m
Turkish Airlines
Sat 5/239:00 pm
USM
-
MIA
2 stops34h 35m
Turkish Airlines
Deal found 2/4$1,500

Find 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 February 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,382
(oojo)

One-way from

$594
(Kiwi.com)
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 February 5, 2026.
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 4/22

10:35 am-8:35 am

2 stops35h 00m

Ko Samui

Mon 4/27

7:10 pm-8:35 pm

2 stops36h 25m

$1,382

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Tue 4/21

10:30 pm-2:45 pm

2 stops29h 15m

Ko Samui

Sun 4/26

7:50 am-7:10 am

2 stops34h 20m

$1,425

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Wed 4/22

10:30 pm-3:10 pm

2 stops29h 40m

Ko Samui

Sun 4/26

7:50 am-7:10 am

2 stops34h 20m

$1,425

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Thu 4/23

10:30 pm-3:10 pm

2 stops29h 40m

Ko Samui

Sun 4/26

8:10 am-7:10 am

2 stops34h 00m

$1,452

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Sun 3/15

11:20 am-8:40 am

2 stops34h 20m

Ko Samui

Tue 5/19

6:25 pm-8:35 pm

2 stops37h 10m

$1,475

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Tue 3/17

11:30 pm-8:25 pm

2 stops33h 55m

Ko Samui

Fri 5/22

7:15 pm-8:35 pm

2 stops36h 20m

$1,475

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Wed 4/22

10:30 pm-3:45 pm

2 stops30h 15m

Ko Samui

Tue 4/28

9:00 pm-8:35 pm

2 stops34h 35m

$1,475

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Wed 3/18

11:20 am-8:05 am

2 stops33h 45m

Ko Samui

Sun 5/17

8:50 pm-8:35 pm

2 stops34h 45m

$1,475

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Sun 3/15

11:20 am-8:10 am

2 stops33h 50m

Ko Samui

Wed 5/20

8:35 pm-8:35 pm

2 stops35h 00m

$1,475

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Wed 2/11

6:05 am-9:05 pm

2 stops51h 00m

Ko Samui

Tue 2/17

1:25 pm-4:56 pm

2 stops63h 31m

$1,503

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

Showing 1-10 of 17 results
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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 February 5, 2026.

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 35h. Turkish Airlines provides one of the quickest options available for as low as $1,382. There are 9988 mi between Key Largo and Ko Samui.

  • 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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