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$1,970+ Cheap flights from Key Largo, FL to Kos (KGS)

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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — KGS
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheap flight deals from Key Largo to Kos

Cheapest flights from Key Largo to Kos
Explore the most affordable flight options available from Key Largo to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

This Emirates deal was found by Cheapflights users on 1/31. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2211:55 pm
MIA
-
KGS
2 stops34h 40m
Emirates
Sun 4/261:05 pm
KGS
-
MIA
2 stops27h 55m
Emirates
Deal found 1/31$1,970
This Emirates deal was found by Cheapflights users on 2/2. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2311:55 pm
MIA
-
KGS
2 stops34h 40m
Emirates
Mon 4/271:05 pm
KGS
-
MIA
2 stops27h 55m
Emirates
Deal found 2/2$2,079
This Emirates deal was found by Cheapflights users on 2/3. 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 Emirates is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2011:55 pm
MIA
-
KGS
2 stops35h 10m
Emirates
Fri 3/2712:35 pm
KGS
-
MIA
2 stops51h 25m
Emirates
Deal found 2/3$4,709

Find flight deals from Key Largo to Kos

Keep the following information in mind while searching for Key Largo to Kos flight deals. Data was last updated February 3, 2026.

Round-trip from

$1,970
(Emirates)
From Key Largo to Kos
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to Kos 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 3, 2026.
Use the filters below to find and compare flights from Key Largo to Kos that are best for you.

Fly from

Key Largo

Fly to

Kos

Route

Depart

Return

Price

MiamiKos

MIA - KGS

MIAKGS

Miami

Wed 4/22

11:55 pm-5:35 pm

2 stops34h 40m

Kos

Sun 4/26

1:05 pm-10:00 am

2 stops27h 55m

$1,970

MiamiKos

MIA - KGS

MIAKGS

Miami

Thu 4/23

11:55 pm-5:35 pm

2 stops34h 40m

Kos

Mon 4/27

1:05 pm-10:00 am

2 stops27h 55m

$2,079

MiamiKos

MIA - KGS

MIAKGS

Miami

Fri 3/20

11:55 pm-5:05 pm

2 stops35h 10m

Kos

Fri 3/27

12:35 pm-10:00 am

2 stops51h 25m

$4,709

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/31

Best time to book a flight from Key Largo to Kos

Have a flexible travel schedule? Discover the best time to fly to Kos 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 Kos
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Kos

Get insights into the airlines that provide service to Kos. 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 Kos. Reviews last updated February 3, 2026.
Get a feel of what it's like to fly with SWISS from Key Largo to Kos by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
SWISS
7.6
Good
1,864 reviews

Crew

8.3

Comfort

7.4

Entertainment

6.8

Food

7.1

Boarding

7.7

Overall

7.6

Reviews

1 / 20
2.0
Mediocre

Katerina,Sep 2025

GVA - ATH

Although the plane was half empty and the flight was late at night, we were not allowed to change seats/ use empty seats to get ourselves more comfortable, or get some proper sleep. It is really frustrating to see lack of flexibility in such a simple need.
SWISS
7.6
Good
1,864 reviews
SWISS
7.6
Good
1,864 reviews

Crew

8.3

Comfort

7.4

Entertainment

6.8

Food

7.1

Boarding

7.7

Overall

7.6

Reviews

1 / 20
2.0
Mediocre

Katerina,Sep 2025

GVA - ATH

Although the plane was half empty and the flight was late at night, we were not allowed to change seats/ use empty seats to get ourselves more comfortable, or get some proper sleep. It is really frustrating to see lack of flexibility in such a simple need.

Related info for your journey

Find useful and relevant information for your journey from Key Largo to Kos. 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 Kos from Key Largo?

    If you book a flight to Kos from Key Largo, you will be flying to Kos, which is the city’s only airport. Kos (KGS) is located 12.8 mi from the center of Kos. There are 0 flights from Key Largo to Kos per day from 1 airline.

  • How long is the flight from Key Largo to Kos?

    Airlines like Emirates fly from Key Largo to Kos in about 34h 40m. The time it takes to get you to your destination can typically vary by up to . There are 6034 mi between Key Largo and Kos.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Key Largo to Kos 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

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Top airline flying from Key Largo to Kos

Discover the top airline that operate flights from Key Largo to Kos. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$1,370Average$1,451FlexibilityNo cancel feeOn-time79%

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