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£100 Cheap Flights from Barcelona (BCN) to Kos (KGS)

View £100 flight on Tue, 15 Sept 2026Opens in a new window

Popular airlines from Barcelona El Prat Airport (BCN) to Kos (KGS-Kos Island Intl.)

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Cheap Flights from Barcelona (BCN) to Kos (KGS)

Prices were available within the past 7 days and start at £100 for one-way flights and £190 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Fri, 21 Aug - Wed, 26 Aug
BCN
Barcelona
KGS
Kos
£190 Return, found 3 days ago
£190
Return
found 3 days ago
Select Swiss International Air Lines flight, departing Fri, 21 Aug from Barcelona to Kos, returning Wed, 26 Aug, priced at £190 found 3 days ago
Swiss International Air Lines
Mon, 31 Aug - Mon, 7 Sept
BCN
Barcelona
KGS
Kos
£192 Return, found 4 days ago
£192
Return
found 4 days ago
Select Swiss International Air Lines flight, departing Mon, 31 Aug from Barcelona to Kos, returning Mon, 7 Sept, priced at £192 found 4 days ago
Aegean
Mon, 31 Aug - Mon, 7 Sept
BCN
Barcelona
KGS
Kos
£219 Return, found 4 days ago
£219
Return
found 4 days ago
Select Aegean flight, departing Mon, 31 Aug from Barcelona to Kos, returning Mon, 7 Sept, priced at £219 found 4 days ago
Aegean
Mon, 31 Aug - Mon, 7 Sept
BCN
Barcelona
KGS
Kos
£232 Return, found 4 days ago
£232
Return
found 4 days ago
Select Aegean flight, departing Mon, 31 Aug from Barcelona to Kos, returning Mon, 7 Sept, priced at £232 found 4 days ago
Aegean
Mon, 31 Aug - Mon, 7 Sept
BCN
Barcelona
KGS
Kos
£233 Return, found 4 days ago
£233
Return
found 4 days ago
Select Aegean flight, departing Mon, 31 Aug from Barcelona to Kos, returning Mon, 7 Sept, priced at £233 found 4 days ago
Swiss International Air Lines
Mon, 31 Aug - Mon, 7 Sept
BCN
Barcelona
KGS
Kos
£234 Return, found 4 days ago
£234
Return
found 4 days ago
Select Swiss International Air Lines flight, departing Mon, 31 Aug from Barcelona to Kos, returning Mon, 7 Sept, priced at £234 found 4 days ago
Aegean
Mon, 7 Sept - Sat, 12 Sept
BCN
Barcelona
KGS
Kos
£236 Return, found 21 hours ago
£236
Return
found 21 hours ago
Select Aegean flight, departing Mon, 7 Sept from Barcelona to Kos, returning Sat, 12 Sept, priced at £236 found 21 hours ago
Austrian Airlines
Mon, 7 Sept - Sat, 12 Sept
BCN
Barcelona
KGS
Kos
£241 Return, found 21 hours ago
£241
Return
found 21 hours ago
Select Austrian Airlines flight, departing Mon, 7 Sept from Barcelona to Kos, returning Sat, 12 Sept, priced at £241 found 21 hours ago
Lufthansa
Fri, 21 Aug - Wed, 26 Aug
BCN
Barcelona
KGS
Kos
£243 Return, found 3 days ago
£243
Return
found 3 days ago
Select Lufthansa flight, departing Fri, 21 Aug from Barcelona to Kos, returning Wed, 26 Aug, priced at £243 found 3 days ago
Brussels Airlines
Fri, 11 Sept - Sun, 13 Sept
BCN
Barcelona
KGS
Kos
£253 Return, found 6 days ago
£253
Return
found 6 days ago
Select Brussels Airlines flight, departing Fri, 11 Sept from Barcelona to Kos, returning Sun, 13 Sept, priced at £253 found 6 days ago

Alternative airports near Kos

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Kos Island Intl. KGS. Cheapest and Closest option available. Average driving time to city centre is 25 minutes. Flights from £192
KGS
Kos Island Intl.
CheapestClosest
Average driving time to city centre25 min
Flights from £192

Frequently asked questions

How much does a flight from Barcelona (BCN-Barcelona Intl.) to Kos (KGS-Kos Island Intl.) cost?
You can find cheap one-way flights from £100 and cheap return flights from £190 BCN to KGS with Expedia. Return flights often range between £301 and £682. 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 BCN to KGS ticket fares go up or down.
What is the cheapest month to fly from Barcelona (BCN-Barcelona Intl.) to Kos (KGS-Kos Island Intl.)?
The cheapest months to fly from BCN to KGS are typically during off-peak season 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 are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Barcelona (BCN-Barcelona Intl.) to Kos (KGS-Kos Island Intl.)?
Enter BCN to KGS and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Barcelona (BCN) to Kos (KGS)?
To find a cheap flight from Barcelona (BCN) to Kos (KGS), 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 time to fly from Barcelona (BCN-Barcelona Intl.) 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.
What is the earliest flight from Barcelona (BCN-Barcelona Intl.) to Kos (KGS-Kos Island Intl.)?
The earliest flight from Barcelona (BCN-Barcelona Intl.) to Kos (KGS-Kos Island Intl.) typically departs around 1:55 AM local time, operated by Aegean. This is a seasonal service, active in June and August. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
How long does it take to fly from Barcelona (BCN-Barcelona Intl.) to Kos (KGS-Kos Island Intl.)?
There are no nonstop flights from Barcelona (BCN-Barcelona Intl.) to Kos (KGS-Kos Island Intl.). For flights with one stop, you can expect the journey to take around 14 hours 30 minutes. If your journey involves two or more stops, the travel time typically extends to about 24 hours. The distance between these two airports is approximately 2,210 kilometers. Keep in mind that actual flight times can vary due to factors like layover duration, routing, and wind conditions.
Can you fly business or first class from Barcelona (BCN) to Kos (KGS)?
Select the "Business class" and "First class" filters when looking for Barcelona (BCN) to Kos (KGS) flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Barcelona (BCN-Barcelona Intl.) to Kos (KGS-Kos Island Intl.) flight with Expedia?
It's easy to earn miles on a Barcelona (BCN-Barcelona Intl.) 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 (KGS) from Barcelona (BCN)?
If you're planning to travel to Kos from Barcelona Intl. (BCN), you can fly directly into Kos Island Intl. (KGS). Some flights may connect through major hubs like Frankfurt Intl. (FRA), Franz Josef Strauss Intl. (MUC), or 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 Barcelona (BCN-Barcelona Intl.) to Kos (KGS-Kos Island Intl.) at the last minute?
Typically, booking a last minute flight from Barcelona (BCN-Barcelona Intl.) 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 Barcelona (BCN-Barcelona Intl.) to Kos (KGS-Kos Island Intl.) flight and hotel package?
Securing a Barcelona (BCN-Barcelona Intl.) to Kos (KGS-Kos Island Intl.) flight and hotel package 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 Barcelona (BCN) to Kos (KGS)?
If you booked your Barcelona (BCN) to Kos (KGS) 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.

Travel information

Origin airport
Barcelona Intl.
Destination airport
Kos Island Intl.
Airlines serving
Aegean, Austrian Airlines, British Airways, Smartwings, Swiss International Air Lines
Roundtrip price
£189
Distance
2195 km

Book with confidence

Compare flights from Barcelona to Kos easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Barcelona to Kos. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Kos Island Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Barcelona Intl. to Kos Island Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Barcelona Intl. (BCN) to Kos Island Intl. (KGS)

The easiest way to view the best deals on flights from Barcelona to Kos today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Barcelona Intl. to Kos Island Intl. start at just £190 and range up to £253.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Barcelona and Kos
  • booking your flight during August, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Barcelona to Kos flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Barcelona Intl. to Kos Island Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Barcelona to Kos easily and book with confidence

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*Available to Expedia members.