$140 Cheap Flights from Cologne (CGN) to Bucharest (OTP)

View $140 flight on Wed, Sep 10, 2025Opens in a new window

Popular airlines from Cologne - Bonn Airport (CGN) to Henri Coanda Intl. Airport (OTP)

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Cheap Flights from Cologne to Bucharest (CGN-OTP)

Prices were available within the past 7 days and start at $140 for one-way flights and $247 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Thu, Sep 4 - Sun, Sep 7
CGN
Cologne
OTP
Bucharest
$247 Roundtrip, found 1 day ago
$247
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Thu, Sep 4 from Cologne to Bucharest, returning Sun, Sep 7, priced at $247 found 1 day ago
Lufthansa
Thu, Aug 14 - Tue, Aug 26
CGN
Cologne
OTP
Bucharest
$262 Roundtrip, found 3 days ago
$262
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Thu, Aug 14 from Cologne to Bucharest, returning Tue, Aug 26, priced at $262 found 3 days ago
Lufthansa
Thu, Sep 4 - Sun, Sep 7
CGN
Cologne
OTP
Bucharest
$265 Roundtrip, found 1 day ago
$265
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Thu, Sep 4 from Cologne to Bucharest, returning Sun, Sep 7, priced at $265 found 1 day ago
Lufthansa
Thu, Sep 4 - Sun, Sep 7
CGN
Cologne
OTP
Bucharest
$268 Roundtrip, found 1 day ago
$268
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Thu, Sep 4 from Cologne to Bucharest, returning Sun, Sep 7, priced at $268 found 1 day ago
Lufthansa
Thu, Sep 4 - Sun, Sep 7
CGN
Cologne
OTP
Bucharest
$270 Roundtrip, found 1 day ago
$270
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Thu, Sep 4 from Cologne to Bucharest, returning Sun, Sep 7, priced at $270 found 1 day ago
Lufthansa
Wed, Aug 6 - Sun, Aug 10
CGN
Cologne
OTP
Bucharest
$274 Roundtrip, found 23 hours ago
$274
Roundtrip
found 23 hours ago
Select Lufthansa flight, departing Wed, Aug 6 from Cologne to Bucharest, returning Sun, Aug 10, priced at $274 found 23 hours ago
Austrian Airlines
Wed, Dec 24 - Sat, Jan 3
CGN
Cologne
OTP
Bucharest
$304 Roundtrip, found 4 days ago
$304
Roundtrip
found 4 days ago
Select Austrian Airlines flight, departing Wed, Dec 24 from Cologne to Bucharest, returning Sat, Jan 3, priced at $304 found 4 days ago
Swiss International Air Lines
Thu, Sep 4 - Sun, Sep 7
CGN
Cologne
OTP
Bucharest
$352 Roundtrip, found 1 day ago
$352
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Thu, Sep 4 from Cologne to Bucharest, returning Sun, Sep 7, priced at $352 found 1 day ago
British Airways
Wed, Jul 23 - Sat, Jul 26
CGN
Cologne
OTP
Bucharest
$605 Roundtrip, found 4 days ago
$605
Roundtrip
found 4 days ago
Select British Airways flight, departing Wed, Jul 23 from Cologne to Bucharest, returning Sat, Jul 26, priced at $605 found 4 days ago
Pegasus Airlines
Sat, Jul 12 - Sun, Jul 13
CGN
Cologne
OTP
Bucharest
$646 Roundtrip, found 8 hours ago
$646
Roundtrip
found 8 hours ago
Select Pegasus Airlines flight, departing Sat, Jul 12 from Cologne to Bucharest, returning Sun, Jul 13, priced at $646 found 8 hours ago

Find the cheapest month to fly from Cologne (CGN) to Bucharest (OTP)

November is typically the cheapest month to fly

From $143 - $315 per traveler.

Graph displaying average flight prices per month

Flights from Cologne (CGN) to Bucharest (OTP)
Origin airport
Cologne - Bonn
Destination airport
Henri Coanda Intl.
Airlines serving
Austrian Airlines, British Airways, Lufthansa, Pegasus Airlines, Swiss International Air Lines, Turkish Airlines
Roundtrip price
$247
Distance
979 mi

Cologne to Bucharest Flights

The cheapest times to fly from Cologne to Bucharest

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 Cologne to Bucharest are during the month of September. You can find some of the cheapest flights from Cologne to Bucharest with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Cologne to Bucharest

Sunday is one of the best days to book for cheap flights from Cologne to Bucharest: 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 Cologne to Bucharest

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 Cologne to Bucharest in 2025. You can also book with separate airlines for your outbound and return journeys, from $140 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 Cologne to Bucharest 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 Cologne to Bucharest 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 Cologne - Bonn Airport (CGN) to Henri Coanda Intl. Airport (OTP) cost?
Discover the latest flight deals from CGN to OTP by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from CGN to OTP?
The cheapest flights from CGN to OTP are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Cologne - Bonn Airport (CGN) to Henri Coanda Intl. Airport (OTP)?
There's no direct route from Cologne (CGN-Cologne - Bonn) to Henri Coanda Intl. Airport (OTP). However, there are other airports that have nonstop flights. Hop on your plane at Duesseldorf Intl. Airport (DUS) and head straight to Bucharest without layovers.
What is the cheapest airline that flies from CGN to OTP?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from CGN to OTP. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Cologne - Bonn Airport (CGN) to Henri Coanda Intl. Airport (OTP)?
There aren't any daily direct flights available from Cologne - Bonn Airport (CGN) to Henri Coanda Intl. Airport (OTP). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from CGN to OTP?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary based on a number of factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Cologne - Bonn Airport (CGN) to Henri Coanda Intl. Airport (OTP)?
Select a flight from Cologne - Bonn Airport (CGN) to Henri Coanda Intl. Airport (OTP) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures after this hour 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 Cologne - Bonn Airport (CGN) to Henri Coanda Intl. Airport (OTP) last-minute?
Last-minute bookings from CGN to OTP are generally more expensive. For the best rates, start looking for flights ahead of time. That said, if you can play around with your travel dates, it's possible to score a cheap fare just before your departure.
Is it cheaper to book a CGN to OTP flight and hotel package?
Booking a CGN to OTP flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our wide range of stays and then add activities, car rentals 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 Cologne - Bonn Airport (CGN) to Henri Coanda Intl. Airport (OTP)?
Usually, it's possible to reschedule or cancel your CGN to OTP flight. However, if it's been more than 24 hours since booking, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.