$89 Cheap Flights from Bucharest (OTP) to Kos (KGS)

View $89 flight on Wed, Nov 19, 2025Opens in a new window

Popular airlines from Henri Coanda Intl. Airport (OTP) to Kos (KGS-Kos Island Intl.)

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Cheap Flights from Bucharest to Kos (OTP-KGS)

Prices were available within the past 7 days and start at $89 for one-way flights and $275 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Aegean
Fri, Jun 5 - Fri, Jun 12
OTP
Bucharest
KGS
Kos
$275 Roundtrip, found 7 hours ago
$275
Roundtrip
found 7 hours ago
Select Aegean flight, departing Fri, Jun 5 from Bucharest to Kos, returning Fri, Jun 12, priced at $275 found 7 hours ago
Aegean
Fri, Jun 5 - Fri, Jun 12
OTP
Bucharest
KGS
Kos
$303 Roundtrip, found 7 hours ago
$303
Roundtrip
found 7 hours ago
Select Aegean flight, departing Fri, Jun 5 from Bucharest to Kos, returning Fri, Jun 12, priced at $303 found 7 hours ago
Lufthansa
Fri, Jun 5 - Fri, Jun 12
OTP
Bucharest
KGS
Kos
$311 Roundtrip, found 7 hours ago
$311
Roundtrip
found 7 hours ago
Select Lufthansa flight, departing Fri, Jun 5 from Bucharest to Kos, returning Fri, Jun 12, priced at $311 found 7 hours ago
Austrian Airlines
Wed, Oct 15 - Wed, Nov 5
OTP
Bucharest
KGS
Kos
$312 Roundtrip, just found
$312
Roundtrip
just found
Select Austrian Airlines flight, departing Wed, Oct 15 from Bucharest to Kos, returning Wed, Nov 5, priced at $312 just found
Lufthansa
Fri, Jul 10 - Sat, Jul 18
OTP
Bucharest
KGS
Kos
$317 Roundtrip, found 7 hours ago
$317
Roundtrip
found 7 hours ago
Select Lufthansa flight, departing Fri, Jul 10 from Bucharest to Kos, returning Sat, Jul 18, priced at $317 found 7 hours ago
Lufthansa
Sat, Apr 25 - Mon, May 11
OTP
Bucharest
KGS
Kos
$319 Roundtrip, just found
$319
Roundtrip
just found
Select Lufthansa flight, departing Sat, Apr 25 from Bucharest to Kos, returning Mon, May 11, priced at $319 just found
Swiss International Air Lines
Tue, May 26 - Mon, Jun 8
OTP
Bucharest
KGS
Kos
$320 Roundtrip, just found
$320
Roundtrip
just found
Select Swiss International Air Lines flight, departing Tue, May 26 from Bucharest to Kos, returning Mon, Jun 8, priced at $320 just found
Lufthansa
Wed, May 20 - Mon, Jun 8
OTP
Bucharest
KGS
Kos
$321 Roundtrip, just found
$321
Roundtrip
just found
Select Lufthansa flight, departing Wed, May 20 from Bucharest to Kos, returning Mon, Jun 8, priced at $321 just found
Lufthansa
Sat, Oct 18 - Wed, Nov 5
OTP
Bucharest
KGS
Kos
$328 Roundtrip, just found
$328
Roundtrip
just found
Select Lufthansa flight, departing Sat, Oct 18 from Bucharest to Kos, returning Wed, Nov 5, priced at $328 just found
Eurowings
Mon, Oct 20 - Sun, Nov 2
OTP
Bucharest
KGS
Kos
$856 Roundtrip, just found
$856
Roundtrip
just found
Select Eurowings flight, departing Mon, Oct 20 from Bucharest to Kos, returning Sun, Nov 2, priced at $856 just found

Frequently asked questions

How much does a flight from Henri Coanda Intl. Airport (OTP) to Kos Island Intl. Airport (KGS) cost?
Snag a cheap one-way flight from $89 or cheap return flight from $275 from Henri Coanda Intl. Airport (OTP) 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 Henri Coanda Intl. Airport (OTP) to Kos Island Intl. Airport (KGS)?
Planning your getaway for June may help you find better deals, as it's the cheapest month for flights between OTP and KGS. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Henri Coanda Intl. Airport (OTP) to Kos Island Intl. Airport (KGS)?
To find the cheapest airline that'll fly you from OTP to KGS, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Henri Coanda Intl. Airport (OTP) to Kos Island Intl. Airport (KGS)?
There aren't any daily direct flights available from Henri Coanda Intl. Airport (OTP) to Kos Island Intl. Airport (KGS). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from OTP to KGS?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Henri Coanda Intl. Airport (OTP) to Kos Island Intl. Airport (KGS)?
Opt for a flight from Henri Coanda Intl. Airport (OTP) to Kos Island Intl. Airport (KGS) that leaves before 3 PM to reduce the risk of cancellations and delays. Later departures are on average 22% more likely to be canceled.**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 Henri Coanda Intl. Airport (OTP) to Kos Island Intl. Airport (KGS) last-minute?
Booking your flight from OTP to KGS right before your getaway is usually more expensive. However, if you're flexible with your travel times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book an OTP to KGS flight and hotel package?
Opting for an OTP to KGS flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Select from our impressive range of accommodations and then add car rentals, activities and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Henri Coanda Intl. Airport (OTP) to Kos Island Intl. Airport (KGS)?
If you booked your OTP to KGS flight in 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 that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

Travel information

Travel information

Origin airport
Henri Coanda Intl.
Destination airport
Kos Island Intl.
Roundtrip price
$275
Distance
539 mi

Book with confidence

Book with confidence

Bucharest to Kos Flights

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

 

The best time to book a flight from Bucharest to Kos

Sunday is one of the best days to book for cheap flights from Bucharest 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 Bucharest 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 Bucharest to Kos in 2025. You can also book with separate airlines for your outbound and return journeys, from $89 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 Bucharest 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 Bucharest 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.

 

Bucharest to Kos Flights

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*Available to One Key members.