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Ko Samui

$694+ 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 8/1. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — USM
juin 17 — juin 241
mar. 6/17
mar. 6/24
1 adult, Economy
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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 juin 12, 2025.

Round-trip from

$1,381
(FlightHub)

One-way from

$694
(Kiwi.com)
From Key Largo to Ko Samui
Search Deals
One-way flight from Key Largo to Ko Samui
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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 juin 12, 2025.

This FlightHub deal was found by Cheapflights users on 6/10. 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.
lun. 9/110:15 pmMIA - USM
2 stops32h 45mTurkish Airlines
jeu. 9/187:30 pmUSM - MIA
2 stops35h 50mTurkish Airlines
Deal found 6/10$1,381
This Expedia deal was found by Cheapflights users on 6/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 7/2610:15 pmMIA - USM
2 stops47h 00mMultiple Airlines
sam. 8/27:10 pmUSM - MIA
2 stops36h 10mMultiple Airlines
Deal found 6/11$1,910
This AranGrant deal was found by Cheapflights users on 6/10. 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 AranGrant is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/17:55 pmMIA - USM
2 stops35h 40mCathay Pacific
lun. 10/1310:55 amUSM - MIA
2 stops37h 13mCathay Pacific
Deal found 6/10$2,540
This British Airways deal was found by Cheapflights users on 6/10. 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.
mer. 9/35:00 pmMIA - USM
2 stops41h 10mBritish Airways
lun. 10/131:30 pmUSM - MIA
2 stops36h 00mBritish Airways
Deal found 6/10$2,574

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 juin 12, 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

lun. 9/1

10:15 pm-6:00 pm

2 stops32h 45m

Ko Samui

jeu. 9/18

7:30 pm-8:20 pm

2 stops35h 50m

$1,381

MiamiKo Samui

MIA - USM

MIAUSM

Miami

sam. 7/26

10:15 pm-8:15 am

2 stops47h 00m

Ko Samui

sam. 8/2

7:10 pm-8:20 pm

2 stops36h 10m

$1,910

MiamiKo Samui

MIA - USM

MIAUSM

Miami

lun. 9/1

7:55 pm-6:35 pm

2 stops35h 40m

Ko Samui

lun. 10/13

10:55 am-1:08 pm

2 stops37h 13m

$2,540

MiamiKo Samui

MIA - USM

MIAUSM

Miami

mer. 9/3

5:00 pm-9:10 pm

2 stops41h 10m

Ko Samui

lun. 10/13

1:30 pm-2:30 pm

2 stops36h 00m

$2,574

MiamiKo Samui

MIA - USM

MIAUSM

Miami

ven. 8/1

10:15 pm-8:50 pm

3 stops59h 35m

$694

MiamiKo Samui

MIA - USM

MIAUSM

Miami

ven. 8/1

10:35 am-6:15 pm

2 stops44h 40m

$921

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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 juin 12, 2025.

When flying from Key Largo to Ko Samui, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ko Samui ranges from 2.3 - 19.3 inches per month. November is typically the wettest month, when rainfall can reach 19.3 in. February is typically the driest time to visit Ko Samui when rainfall is around 2.3 in.

Temperature in Ko Samui by month

Plan your trip to Ko Samui by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 80.6 F).

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 juin 12, 2025.
Cathay Pacific
7.6
Good
892 reviews

Boarding

7.9

Comfort

7.6

Entertainment

7.8

Overall

7.6

Food

7.3

Crew

8.0

Reviews

1 / 20
8.0
Excellent

KS,Jun 2025

TFU - HKG

I like the crews and flights, English over the speakers were difficult to understand. The beef dinner was off flavor.
Cathay Pacific
7.6
Good
892 reviews
Cathay Pacific
7.6
Good
892 reviews

Boarding

7.9

Comfort

7.6

Entertainment

7.8

Overall

7.6

Food

7.3

Crew

8.0

Reviews

1 / 20
8.0
Excellent

KS,Jun 2025

TFU - HKG

I like the crews and flights, English over the speakers were difficult to understand. The beef dinner was off flavor.
Turkish Airlines
7.3
Good
3,848 reviews
Cathay Pacific
7.6
Good
892 reviews

Boarding

7.9

Comfort

7.6

Entertainment

7.8

Overall

7.6

Food

7.3

Crew

8.0

Reviews

1 / 20
8.0
Excellent

KS,Jun 2025

TFU - HKG

I like the crews and flights, English over the speakers were difficult to understand. The beef dinner was off flavor.
British Airways
6.6
Okay
7,008 reviews
Cathay Pacific
7.6
Good
892 reviews

Boarding

7.9

Comfort

7.6

Entertainment

7.8

Overall

7.6

Food

7.3

Crew

8.0

Reviews

1 / 20
8.0
Excellent

KS,Jun 2025

TFU - HKG

I like the crews and flights, English over the speakers were difficult to understand. The beef dinner was off flavor.

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.

  • 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 Key Largo?

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

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