$148 Cheap Flights from Prague (PRG) to Kos (KGS)

View $148 flight on Fri, Jun 12, 2026Opens in a new window

Popular airlines from Vaclav Havel Airport (PRG) to Kos (KGS-Kos Island Intl.)

Cheap Flights from Prague to Kos (PRG-KGS)

Prices were available within the past 7 days and start at $148 for one-way flights and $289 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Wed, Aug 12 - Sun, Aug 16
PRG
Prague
KGS
Kos
$289 Roundtrip, found 2 days ago
$289
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Wed, Aug 12 from Prague to Kos, returning Sun, Aug 16, priced at $289 found 2 days ago
Aegean
Wed, Jun 24 - Fri, Jul 3
PRG
Prague
KGS
Kos
$307 Roundtrip, found 2 days ago
$307
Roundtrip
found 2 days ago
Select Aegean flight, departing Wed, Jun 24 from Prague to Kos, returning Fri, Jul 3, priced at $307 found 2 days ago
Swiss International Air Lines
Wed, Aug 12 - Sun, Aug 16
PRG
Prague
KGS
Kos
$307 Roundtrip, found 2 days ago
$307
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Wed, Aug 12 from Prague to Kos, returning Sun, Aug 16, priced at $307 found 2 days ago
Swiss International Air Lines
Wed, Aug 12 - Sun, Aug 16
PRG
Prague
KGS
Kos
$319 Roundtrip, found 2 days ago
$319
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Wed, Aug 12 from Prague to Kos, returning Sun, Aug 16, priced at $319 found 2 days ago
Brussels Airlines
Wed, Aug 12 - Sun, Aug 16
PRG
Prague
KGS
Kos
$320 Roundtrip, found 2 days ago
$320
Roundtrip
found 2 days ago
Select Brussels Airlines flight, departing Wed, Aug 12 from Prague to Kos, returning Sun, Aug 16, priced at $320 found 2 days ago
Brussels Airlines
Wed, Aug 12 - Sun, Aug 16
PRG
Prague
KGS
Kos
$321 Roundtrip, found 2 days ago
$321
Roundtrip
found 2 days ago
Select Brussels Airlines flight, departing Wed, Aug 12 from Prague to Kos, returning Sun, Aug 16, priced at $321 found 2 days ago
Lufthansa
Wed, Aug 12 - Sun, Aug 16
PRG
Prague
KGS
Kos
$330 Roundtrip, found 2 days ago
$330
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Wed, Aug 12 from Prague to Kos, returning Sun, Aug 16, priced at $330 found 2 days ago
Lufthansa
Wed, Aug 12 - Sun, Aug 16
PRG
Prague
KGS
Kos
$332 Roundtrip, found 2 days ago
$332
Roundtrip
found 2 days ago
Select Lufthansa flight, departing Wed, Aug 12 from Prague to Kos, returning Sun, Aug 16, priced at $332 found 2 days ago
Swiss International Air Lines
Wed, Aug 12 - Sun, Aug 16
PRG
Prague
KGS
Kos
$336 Roundtrip, found 2 days ago
$336
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Wed, Aug 12 from Prague to Kos, returning Sun, Aug 16, priced at $336 found 2 days ago
SKY express
Wed, Jun 24 - Fri, Jul 3
PRG
Prague
KGS
Kos
$342 Roundtrip, found 2 days ago
$342
Roundtrip
found 2 days ago
Select SKY express flight, departing Wed, Jun 24 from Prague to Kos, returning Fri, Jul 3, priced at $342 found 2 days ago

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Flights from Prague (PRG) to Kos (KGS)
Origin airport
Vaclav Havel
Destination airport
Kos Island Intl.
Airlines serving
Aegean, Brussels Airlines, Condor, SKY express
Roundtrip price
$289
Distance
1118 mi

Prague to Kos Flights

The cheapest times to fly from Prague 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 Prague to Kos are during the month of August. You can find some of the cheapest flights from Prague to Kos with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Prague to Kos

Sunday is one of the best days to book for cheap flights from Prague 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 Prague 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 Prague to Kos in 2026. You can also book with separate airlines for your outbound and return journeys, from $148 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 Prague 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 Prague 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.

 

Frequently asked questions

How much does a flight from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.) cost?
You can find cheap one-way flights from $148 and cheap return flights from $289 Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.) with Expedia. One-way flights generally range between $154 and $1364, and roundtrip flights usually range from $484 to $1212. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.)?
The cheapest month to fly from PRG to KGS is August when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.)?
Enter PRG to KGS and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.)?
Eurowings is one of the cheapest airlines offering connecting flights from Prague (PRG) to Kos (KGS), with round-trip tickets starting from around $417. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.)?
To find a cheap flight from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.)?
The best airline to fly with from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.) will differ from traveler to traveler. If you like to fly early, QS offers early morning flights. If price is the most important factor, QS typically offers the lowest fares. Lufthansa offers the most daily flights from Prague to Kos, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.)?
On average, there are around 1 nonstop flights per day from Vaclav Havel (PRG) to Kos Island Intl. (KGS). For more options, look at flights that include layovers.
What is the earliest flight from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.)?
The earliest flight from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.) typically departs at around 4:50 AM, operated by QS. This is a seasonal service active in June and September, making it a great option for early travelers looking to enjoy the beautiful island of Kos. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.)?
When flying from Prague (PRG) to Kos (KGS), the most popular departure times are in the evening, specifically from 6pm to 9pm. This time is chosen by around 40% of passengers, making it ideal for those who want to enjoy a full day in Prague before departing. Airlines like Smartwings and Lufthansa offer flights during this period.
How long does it take to fly from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.)?
A nonstop flight from PRG to KGS typically takes around 2 hours 50 minutes, covering approximately 1,119 miles. Connecting flights on this route usually add 2 hours to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.)?
Business class seats are offered on the PRG to KGS route. Airlines that offer business class service on this route include:

  • Austrian Airlines
  • Lufthansa
  • Aegean
  • Brussels Airlines
  • Helvetic Airways
  • Swiss International Air Lines

How do I earn miles on a Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.) flight with Expedia?
It's easy to earn miles on a Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Kos from Vaclav Havel (PRG)?
If you're planning to travel to Kos from Vaclav Havel (PRG), you can fly into Kos Island Intl. (KGS) Some flights may connect through major hubs like Frankfurt Intl. (FRA), Franz Josef Strauss Intl. (MUC), Heathrow (LHR) before reaching Kos. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.) at the last minute?
Typically, booking a last minute flight from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.) flight and hotel package?
Securing a Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.) Kos Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.)?
If you booked your Prague (PRG-Vaclav Havel) to Kos (KGS-Kos Island Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

*Flight schedules are subject to change.

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*Available to One Key members.