$143 Cheap Flights from Florence (FLR) to Kos (KGS)

View $143 flight on Thu, Oct 2, 2025Opens in a new window

Popular airlines from Florence Airport, Peretola (FLR) to Kos (KGS-Kos Island Intl.)

Cheap Flights from Florence to Kos (FLR-KGS)

Prices were available within the past 7 days and start at $143 for one-way flights and $455 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Eurowings
Thu, Oct 2 - Sun, Oct 5
FLR
Florence
KGS
Kos
$455 Roundtrip, just found
$455
Roundtrip
just found
Select Eurowings flight, departing Thu, Oct 2 from Florence to Kos, returning Sun, Oct 5, priced at $455 just found
Brussels Airlines
Thu, Oct 2 - Sun, Oct 5
FLR
Florence
KGS
Kos
$475 Roundtrip, just found
$475
Roundtrip
just found
Select Brussels Airlines flight, departing Thu, Oct 2 from Florence to Kos, returning Sun, Oct 5, priced at $475 just found
Eurowings
Thu, Oct 2 - Sun, Oct 5
FLR
Florence
KGS
Kos
$502 Roundtrip, just found
$502
Roundtrip
just found
Select Eurowings flight, departing Thu, Oct 2 from Florence to Kos, returning Sun, Oct 5, priced at $502 just found
Brussels Airlines
Thu, Oct 2 - Sun, Oct 5
FLR
Florence
KGS
Kos
$510 Roundtrip, just found
$510
Roundtrip
just found
Select Brussels Airlines flight, departing Thu, Oct 2 from Florence to Kos, returning Sun, Oct 5, priced at $510 just found
Brussels Airlines
Thu, Oct 2 - Sun, Oct 5
FLR
Florence
KGS
Kos
$514 Roundtrip, just found
$514
Roundtrip
just found
Select Brussels Airlines flight, departing Thu, Oct 2 from Florence to Kos, returning Sun, Oct 5, priced at $514 just found
Eurowings
Thu, Oct 2 - Sun, Oct 5
FLR
Florence
KGS
Kos
$518 Roundtrip, just found
$518
Roundtrip
just found
Select Eurowings flight, departing Thu, Oct 2 from Florence to Kos, returning Sun, Oct 5, priced at $518 just found
ITA Airways
Thu, Oct 2 - Sun, Oct 5
FLR
Florence
KGS
Kos
$521 Roundtrip, just found
$521
Roundtrip
just found
Select ITA Airways flight, departing Thu, Oct 2 from Florence to Kos, returning Sun, Oct 5, priced at $521 just found
Eurowings
Thu, Oct 2 - Sun, Oct 5
FLR
Florence
KGS
Kos
$537 Roundtrip, just found
$537
Roundtrip
just found
Select Eurowings flight, departing Thu, Oct 2 from Florence to Kos, returning Sun, Oct 5, priced at $537 just found
Austrian Airlines
Thu, Oct 2 - Sun, Oct 5
FLR
Florence
KGS
Kos
$619 Roundtrip, just found
$619
Roundtrip
just found
Select Austrian Airlines flight, departing Thu, Oct 2 from Florence to Kos, returning Sun, Oct 5, priced at $619 just found
British Airways
Thu, Oct 16 - Sun, Oct 19
FLR
Florence
KGS
Kos
$1,058 Roundtrip, found 2 hours ago
$1,058
Roundtrip
found 2 hours ago
Select British Airways flight, departing Thu, Oct 16 from Florence to Kos, returning Sun, Oct 19, priced at $1,058 found 2 hours ago

Frequently asked questions

How much does a flight from Peretola Airport (FLR) to Kos Island Intl. Airport (KGS) cost?
Grab a cheap one-way flight from $143 or cheap return flight from $455 from Peretola Airport (FLR) to Kos Island Intl. Airport (KGS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Peretola Airport (FLR) to Kos Island Intl. Airport (KGS)?
October is the least expensive month to fly from FLR to KGS. Traveling outside of peak seasons is often the key to finding better fares.
What is the cheapest airline that flies from Peretola Airport (FLR) to Kos Island Intl. Airport (KGS)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest FLR to KGS flight.
How many flights per day from Peretola Airport (FLR) to Kos Island Intl. Airport (KGS)?
There are no daily direct flights from Peretola Airport (FLR) to Kos Island Intl. Airport (KGS). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from FLR to KGS?
Usually you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change depending on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Peretola Airport (FLR) to Kos Island Intl. Airport (KGS)?
To arrive at Kos Island Intl. Airport (KGS) without delays, opt for a flight that takes off from Peretola Airport (FLR) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Peretola Airport (FLR) to Kos Island Intl. Airport (KGS) last-minute?
Booking your ticket from FLR to KGS just before your journey is generally more expensive. However, if there's some wiggle room with your departure times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book a FLR to KGS flight and hotel package?
You'll generally save money by booking a FLR to KGS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. Once you've selected your preferred flights and accommodations, you can add extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Peretola Airport (FLR) to Kos Island Intl. Airport (KGS)?
In most instances, you're able to cancel or reschedule your FLR to KGS flight. However, additional charges may apply, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you'd like further information, head to our Customer Service portal.

Travel information

Travel information

Origin airport
Peretola
Destination airport
Kos Island Intl.
Roundtrip price
$454
Distance
964 mi

Book with confidence

Book with confidence

Florence to Kos Flights

The cheapest times to fly from Florence to Kos

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Florence to Kos are during the month of October. You can find some of the cheapest flights from Florence to Kos with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Florence to Kos

Sunday is one of the best days to book for cheap flights from Florence to Kos: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Florence to Kos

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Florence to Kos in 2025. You can also book with separate airlines for your outbound and return journeys, from $143 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Florence to Kos flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Florence to Kos airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Florence to Kos Flights

Explore a world of travel with Expedia

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*Available to One Key members.