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Ko Samui

$958+ Cheap flights from Key Largo, FL to Ko Samui (USM)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — USM
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$1,520
(Qatar Airways)
From Key Largo to Ko Samui
Search Deals

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 July 31, 2025.

This Trip.com deal was found by Cheapflights users on 7/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/46:35 pmMIA - USM
2 stops60h 40mMultiple Airlines
Tue 8/198:20 amUSM - MIA
2 stops68h 13mMultiple Airlines
Deal found 7/29$958
This Qatar Airways deal was found by Cheapflights users on 7/28. 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 00mQatar Airways
Mon 11/33:05 pmUSM - MIA
2 stops37h 20mQatar Airways
Deal found 7/28$1,520
This Gotogate deal was found by Cheapflights users on 7/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/410:15 pmMIA - USM
2 stops51h 55mTurkish Airlines
Tue 8/198:20 amUSM - MIA
2 stops47h 00mTurkish Airlines
Deal found 7/29$2,058

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 July 31, 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

Mon 8/4

6:35 pm-6:15 pm

2 stops60h 40m

Ko Samui

Tue 8/19

8:20 am-5:33 pm

2 stops68h 13m

$958

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Mon 8/4

10:15 pm-1:10 pm

2 stops51h 55m

Ko Samui

Tue 8/19

8:20 am-8:20 pm

2 stops47h 00m

$2,058

MiamiKo Samui

MIA - USM

MIAUSM

Miami

Thu 10/23

7:10 am-7:35 am

3 stops37h 25m

Ko Samui

Sat 11/1

8:20 pm-5:25 pm

2 stops32h 05m

$9,963

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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 July 31, 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.

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 July 31, 2025.
Peruse reviews from past customers who have flown with Qatar Airways from Key Largo to Ko Samui to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qatar Airways
7.4
Good
3,609 reviews

Food

7.3

Overall

7.4

Crew

7.9

Boarding

7.5

Entertainment

7.4

Comfort

7.4

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable
Qatar Airways
7.4
Good
3,609 reviews
Qatar Airways
7.4
Good
3,609 reviews

Food

7.3

Overall

7.4

Crew

7.9

Boarding

7.5

Entertainment

7.4

Comfort

7.4

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable

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 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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