$127 Cheap Flights from Brussels (BRU) to Kos (KGS)

View $127 flight on Sat, Sep 26, 2026Opens in a new window

Popular airlines from Brussels Airport (BRU) to Kos (KGS-Kos Island Intl.)

Cheap Flights from Brussels to Kos (BRU-KGS)

Prices were available within the past 7 days and start at $127 for one-way flights and $259 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Brussels Airlines
Sat, Sep 26 - Sat, Oct 3
BRU
Brussels
KGS
Kos
$259 Roundtrip, found 3 days ago
$259
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Sat, Sep 26 from Brussels to Kos, returning Sat, Oct 3, priced at $259 found 3 days ago
Brussels Airlines
Sat, Sep 19 - Fri, Sep 25
BRU
Brussels
KGS
Kos
$278 Roundtrip, found 20 hours ago
$278
Roundtrip
found 20 hours ago
Select Brussels Airlines flight, departing Sat, Sep 19 from Brussels to Kos, returning Fri, Sep 25, priced at $278 found 20 hours ago
Brussels Airlines
Sat, Sep 26 - Sat, Oct 3
BRU
Brussels
KGS
Kos
$284 Roundtrip, found 3 days ago
$284
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Sat, Sep 26 from Brussels to Kos, returning Sat, Oct 3, priced at $284 found 3 days ago
Brussels Airlines
Sat, Sep 26 - Sat, Oct 3
BRU
Brussels
KGS
Kos
$286 Roundtrip, found 3 days ago
$286
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Sat, Sep 26 from Brussels to Kos, returning Sat, Oct 3, priced at $286 found 3 days ago
Brussels Airlines
Sat, Sep 26 - Sat, Oct 3
BRU
Brussels
KGS
Kos
$292 Roundtrip, found 3 days ago
$292
Roundtrip
found 3 days ago
Select Brussels Airlines flight, departing Sat, Sep 26 from Brussels to Kos, returning Sat, Oct 3, priced at $292 found 3 days ago
Brussels Airlines
Wed, Aug 12 - Mon, Aug 17
BRU
Brussels
KGS
Kos
$296 Roundtrip, found 5 days ago
$296
Roundtrip
found 5 days ago
Select Brussels Airlines flight, departing Wed, Aug 12 from Brussels to Kos, returning Mon, Aug 17, priced at $296 found 5 days ago
Aegean
Sat, Sep 26 - Sat, Oct 3
BRU
Brussels
KGS
Kos
$300 Roundtrip, found 3 days ago
$300
Roundtrip
found 3 days ago
Select Aegean flight, departing Sat, Sep 26 from Brussels to Kos, returning Sat, Oct 3, priced at $300 found 3 days ago
TuiFly Belgium
Thu, Jun 18 - Fri, Jun 19
BRU
Brussels
KGS
Kos
$304 Roundtrip, found 12 hours ago
$304
Roundtrip
found 12 hours ago
Select TuiFly Belgium flight, departing Thu, Jun 18 from Brussels to Kos, returning Fri, Jun 19, priced at $304 found 12 hours ago
Austrian Airlines
Thu, Jun 18 - Fri, Jun 19
BRU
Brussels
KGS
Kos
$308 Roundtrip, found 12 hours ago
$308
Roundtrip
found 12 hours ago
Select Austrian Airlines flight, departing Thu, Jun 18 from Brussels to Kos, returning Fri, Jun 19, priced at $308 found 12 hours ago
Swiss International Air Lines
Wed, Aug 12 - Mon, Aug 17
BRU
Brussels
KGS
Kos
$328 Roundtrip, found 5 days ago
$328
Roundtrip
found 5 days ago
Select Swiss International Air Lines flight, departing Wed, Aug 12 from Brussels to Kos, returning Mon, Aug 17, priced at $328 found 5 days ago

The Annual Vacation Sale

Members save up to 40% on hotels and homes. Plan this year’s big trip and save.
Book now

Frequently asked questions

How much does a flight from Brussels (BRU-Brussels - National) to Kos (KGS-Kos Island Intl.) cost?
You can find cheap one-way flights from $127 and cheap return flights from $259 Brussels (BRU-Brussels - National) to Kos (KGS-Kos Island Intl.) with Expedia. Return flights often range between $323 and $1097. 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 Brussels (BRU-Brussels - National) 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 Brussels (BRU-Brussels - National) to Kos (KGS-Kos Island Intl.)?
The cheapest month to fly from BRU to KGS is September 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 Brussels (BRU-Brussels - National) to Kos (KGS-Kos Island Intl.)?
There are 2 airlines offering direct flights from BRU to KGS:

  • TuiFly Belgium operates around 7 direct flights from BRU to KGS every week
  • Brussels Airlines operates around 7 direct flights from BRU to KGS every week

What is the cheapest airline that flies from Brussels (BRU-Brussels - National) to Kos (KGS-Kos Island Intl.)?
TuiFly Belgium is one of the cheapest airlines offering nonstop flights from Brussels (BRU) to Kos (KGS), with return tickets starting from around $381. This price is based on recent data and reflects the average cost. 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 Brussels (BRU-Brussels - National) to Kos (KGS-Kos Island Intl.)?
To find a cheap flight from Brussels (BRU-Brussels - National) 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 time to fly from Brussels (BRU-Brussels - National) 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 Brussels (BRU-Brussels - National) to Kos (KGS-Kos Island Intl.)?
You can find approximately 1 nonstop flights per day from Brussels - National (BRU) to Kos Island Intl. (KGS). For more options, look at flights that include layovers.
What is the earliest flight from Brussels (BRU-Brussels - National) to Kos (KGS-Kos Island Intl.)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from BRU to KGS. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Brussels (BRU-Brussels - National) to Kos (KGS-Kos Island Intl.)?
The most popular departure times for flights from Brussels (BRU) to Kos (KGS) are in the morning, from 6am to 9am. About 39% of passengers prefer this time window. Many major carriers, including Brussels Airlines and Lufthansa, offer flights during this window. This timing is popular because it allows you to start your day early and enjoy your time in Kos.
How long does it take to fly from Brussels (BRU-Brussels - National) to Kos (KGS-Kos Island Intl.)?
Direct flights from BRU to KGS usually take about 3 hours 50 minutes, traveling roughly 1,478 miles. If you opt for a connecting flight, expect to add around 16 hours 40 minutes to your journey. 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 Brussels (BRU-Brussels - National) to Kos (KGS-Kos Island Intl.)?
You can fly business class between BRU and KGS. Airlines that offer business class service on this route include:

  • Brussels Airlines
  • Aegean
  • Austrian Airlines

How do I earn miles on a Brussels (BRU-Brussels - National) to Kos (KGS-Kos Island Intl.) flight with Expedia?
It's easy to earn miles on a Brussels (BRU-Brussels - National) 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 Brussels - National (BRU)?
If you're planning to travel to Kos from Brussels - National (BRU), you can fly into Kos Island Intl. (KGS) Some flights may connect through major hubs like Cointrin Intl. (GVA), Roissy-Charles de Gaulle (CDG), Macedonia (SKG) 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 Brussels (BRU-Brussels - National) to Kos (KGS-Kos Island Intl.) at the last minute?
Typically, booking a last minute flight from Brussels (BRU-Brussels - National) 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 Brussels (BRU-Brussels - National) to Kos (KGS-Kos Island Intl.) flight and hotel package?
Securing a Brussels (BRU-Brussels - National) 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 Brussels (BRU-Brussels - National) to Kos (KGS-Kos Island Intl.)?
If you booked your Brussels (BRU-Brussels - National) 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.

Travel information

Origin airport
Brussels - National
Destination airport
Kos Island Intl.
Airlines serving
Aegean, Austrian Airlines, Brussels Airlines, SKY express, Swiss International Air Lines, TuiFly Belgium
Roundtrip price
$258
Distance
1478 mi

Book with confidence

Brussels to Kos Flights

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

 

The best time to book a flight from Brussels to Kos

Sunday is one of the best days to book for cheap flights from Brussels 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 Brussels 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 Brussels to Kos in 2026. You can also book with separate airlines for your outbound and return journeys, from $127 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 Brussels 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 Brussels 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.

 

Brussels to Kos Flights

*Flight schedules are subject to change.

Explore a world of travel with Expedia

*Available to One Key members.