$423 Cheap Flights from Denver (DEN) to Cologne (CGN)

View $423 flight on Mon, Feb 9, 2026Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Cologne - Bonn Airport (CGN)

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Cheap Flights from Denver to Cologne (DEN-CGN)

Prices were available within the past 7 days and start at $423 for one-way flights and $604 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Wed, Feb 11 - Mon, Feb 23
DEN
Denver
CGN
Cologne
$604 Roundtrip, found 21 hours ago
$604
Roundtrip
found 21 hours ago
Select British Airways flight, departing Wed, Feb 11 from Denver to Cologne, returning Mon, Feb 23, priced at $604 found 21 hours ago
British Airways
Tue, Dec 2 - Wed, Dec 10
DEN
Denver
CGN
Cologne
$605 Roundtrip, found 5 days ago
$605
Roundtrip
found 5 days ago
Select British Airways flight, departing Tue, Dec 2 from Denver to Cologne, returning Wed, Dec 10, priced at $605 found 5 days ago
British Airways
Wed, Jan 28 - Mon, Feb 2
DEN
Denver
CGN
Cologne
$610 Roundtrip, found 3 days ago
$610
Roundtrip
found 3 days ago
Select British Airways flight, departing Wed, Jan 28 from Denver to Cologne, returning Mon, Feb 2, priced at $610 found 3 days ago
British Airways
Tue, Dec 2 - Tue, Dec 9
DEN
Denver
CGN
Cologne
$615 Roundtrip, found 5 days ago
$615
Roundtrip
found 5 days ago
Select British Airways flight, departing Tue, Dec 2 from Denver to Cologne, returning Tue, Dec 9, priced at $615 found 5 days ago
British Airways
Wed, Feb 11 - Wed, Feb 25
DEN
Denver
CGN
Cologne
$629 Roundtrip, found 21 hours ago
$629
Roundtrip
found 21 hours ago
Select British Airways flight, departing Wed, Feb 11 from Denver to Cologne, returning Wed, Feb 25, priced at $629 found 21 hours ago
British Airways
Wed, Dec 3 - Wed, Dec 10
DEN
Denver
CGN
Cologne
$630 Roundtrip, found 5 days ago
$630
Roundtrip
found 5 days ago
Select British Airways flight, departing Wed, Dec 3 from Denver to Cologne, returning Wed, Dec 10, priced at $630 found 5 days ago
American Airlines
Wed, Nov 12 - Wed, Nov 26
DEN
Denver
CGN
Cologne
$786 Roundtrip, found 2 days ago
$786
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Nov 12 from Denver to Cologne, returning Wed, Nov 26, priced at $786 found 2 days ago
Turkish Airlines
Sat, Jan 24 - Mon, Jan 26
DEN
Denver
CGN
Cologne
$906 Roundtrip, found 3 days ago
$906
Roundtrip
found 3 days ago
Select Turkish Airlines flight, departing Sat, Jan 24 from Denver to Cologne, returning Mon, Jan 26, priced at $906 found 3 days ago
Air Canada
Mon, Feb 9 - Wed, Feb 18
DEN
Denver
CGN
Cologne
$954 Roundtrip, found 11 hours ago
$954
Roundtrip
found 11 hours ago
Select Air Canada flight, departing Mon, Feb 9 from Denver to Cologne, returning Wed, Feb 18, priced at $954 found 11 hours ago
Lufthansa
Wed, Mar 11 - Wed, Mar 25
DEN
Denver
CGN
Cologne
$963 Roundtrip, found 22 hours ago
$963
Roundtrip
found 22 hours ago
Select Lufthansa flight, departing Wed, Mar 11 from Denver to Cologne, returning Wed, Mar 25, priced at $963 found 22 hours ago

Alternative airports near Cologne

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

Select flight to Cologne - Bonn CGN. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $1,348
CGN
Cologne - Bonn
CheapestClosest
Average driving time to city center14 min
Flights from $1,348

Frequently asked questions

How much does a flight from Denver Intl. Airport (DEN) to Cologne - Bonn Airport (CGN) cost?
Snag a cheap one-way flight from $423 or cheap return flight from $604 from Denver Intl. Airport (DEN) to Cologne - Bonn Airport (CGN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Denver Intl. Airport (DEN) to Cologne - Bonn Airport (CGN)?
Planning your trip for February can help you save, as it's the cheapest month for flights between DEN and CGN. You'll often find the lowest prices during off-peak months.
What is the cheapest airline that flies from Denver Intl. Airport (DEN) to Cologne - Bonn Airport (CGN)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll take you from DEN to CGN. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from Denver Intl. Airport (DEN) to Cologne - Bonn Airport (CGN)?
There aren't any daily nonstop flights from Denver Intl. Airport (DEN) to Cologne - Bonn Airport (CGN). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from DEN to CGN?
You'll usually 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 Denver Intl. Airport (DEN) to Cologne - Bonn Airport (CGN)?
To avoid potential delays on the Denver Intl. Airport (DEN) to Cologne - Bonn Airport (CGN) route, fly before 3 PM. Departures after this time have a 22% higher chance of being 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 Denver Intl. Airport (DEN) to Cologne - Bonn Airport (CGN) last-minute?
Booking your plane ticket from DEN to CGN shortly before your journey is generally more expensive. But 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 DEN to CGN flight and hotel package?
Opting for a DEN to CGN flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Choose from our wide range of stays and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Denver Intl. Airport (DEN) to Cologne - Bonn Airport (CGN)?
If you booked your DEN to CGN 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 fare you have, additional charges may apply for changes after 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

Origin airport
Denver Intl.
Destination airport
Cologne - Bonn
Airlines serving
Air Canada, American Airlines, Austrian Airlines, British Airways, Lufthansa, Swiss International Air Lines, Turkish Airlines, United
Roundtrip price
$604
Distance
4939 mi

Book with confidence

Denver to Cologne Flights

The cheapest times to fly from Denver to Cologne

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

 

The best time to book a flight from Denver to Cologne

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

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 Denver to Cologne in 2025. You can also book with separate airlines for your outbound and return journeys, from $423 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 Denver to Cologne 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 Denver to Cologne 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.

 

Denver to Cologne Flights

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*Available to One Key members.