$811 Cheap Flights from Cologne (CGN) to Denver (DEN)

View $811 flight on Tue, Apr 28, 2026Opens in a new window

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

Cheap Flights from Cologne to Denver (CGN-DEN)

Prices were available within the past 7 days and start at $811 for one-way flights and $617 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Sat, Sep 6 - Wed, Sep 10
CGN
Cologne
DEN
Denver
$617 Roundtrip, found 6 days ago
$617
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Sat, Sep 6 from Cologne to Denver, returning Wed, Sep 10, priced at $617 found 6 days ago
Lufthansa
Wed, Sep 24 - Wed, Oct 1
CGN
Cologne
DEN
Denver
$620 Roundtrip, found 4 days ago
$620
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Wed, Sep 24 from Cologne to Denver, returning Wed, Oct 1, priced at $620 found 4 days ago
Lufthansa
Thu, Oct 23 - Thu, Oct 30
CGN
Cologne
DEN
Denver
$621 Roundtrip, found 5 days ago
$621
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Thu, Oct 23 from Cologne to Denver, returning Thu, Oct 30, priced at $621 found 5 days ago
Air Canada
Thu, Oct 23 - Thu, Oct 30
CGN
Cologne
DEN
Denver
$626 Roundtrip, found 5 days ago
$626
Roundtrip
found 5 days ago
Select Air Canada flight, departing Thu, Oct 23 from Cologne to Denver, returning Thu, Oct 30, priced at $626 found 5 days ago
Lufthansa
Wed, Sep 24 - Wed, Oct 1
CGN
Cologne
DEN
Denver
$630 Roundtrip, found 4 days ago
$630
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Wed, Sep 24 from Cologne to Denver, returning Wed, Oct 1, priced at $630 found 4 days ago
Lufthansa
Thu, Oct 23 - Thu, Oct 30
CGN
Cologne
DEN
Denver
$631 Roundtrip, found 5 days ago
$631
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Thu, Oct 23 from Cologne to Denver, returning Thu, Oct 30, priced at $631 found 5 days ago
Air Canada
Thu, Oct 23 - Thu, Oct 30
CGN
Cologne
DEN
Denver
$633 Roundtrip, found 5 days ago
$633
Roundtrip
found 5 days ago
Select Air Canada flight, departing Thu, Oct 23 from Cologne to Denver, returning Thu, Oct 30, priced at $633 found 5 days ago
United
Mon, Sep 22 - Wed, Oct 8
CGN
Cologne
DEN
Denver
$639 Roundtrip, found 2 days ago
$639
Roundtrip
found 2 days ago
Select United flight, departing Mon, Sep 22 from Cologne to Denver, returning Wed, Oct 8, priced at $639 found 2 days ago
British Airways
Sun, Oct 12 - Sat, Oct 18
CGN
Cologne
DEN
Denver
$651 Roundtrip, found 3 days ago
$651
Roundtrip
found 3 days ago
Select British Airways flight, departing Sun, Oct 12 from Cologne to Denver, returning Sat, Oct 18, priced at $651 found 3 days ago
American Airlines
Mon, Sep 29 - Mon, Oct 20
CGN
Cologne
DEN
Denver
$704 Roundtrip, found 2 days ago
$704
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Sep 29 from Cologne to Denver, returning Mon, Oct 20, priced at $704 found 2 days ago

Alternative airports near Denver

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

Select flight to Denver Intl. DEN. Cheapest option available. Average driving time to city center is 32 minutes. Flights from $657
DEN
Denver Intl.
Cheapest
Average driving time to city center32 min
Flights from $657
Flights from Cologne (CGN) to Denver (DEN)
Origin airport
Cologne - Bonn
Destination airport
Denver Intl.
Airlines serving
Air Canada, British Airways, Lufthansa, Swiss International Air Lines, Turkish Airlines
Roundtrip price
$617
Distance
4939 mi

Cologne to Denver Flights

The cheapest times to fly from Cologne to Denver

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

 

The best time to book a flight from Cologne to Denver

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

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 Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $811 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 Denver 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 Denver 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 Denver Intl. Airport (DEN) cost?
Get a cheap one-way flight from $811 or cheap return flight from $617 from Cologne - Bonn Airport (CGN) to Denver Intl. Airport (DEN) 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 Cologne - Bonn Airport (CGN) to Denver Intl. Airport (DEN)?
The cheapest month to fly from CGN to DEN is September, when there's less demand. Off-peak months are often when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Cologne - Bonn Airport (CGN) to Denver Intl. Airport (DEN)?
To find the cheapest airline flying from CGN to DEN, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Cologne - Bonn Airport (CGN) to Denver Intl. Airport (DEN)?
Direct flights from Cologne - Bonn Airport (CGN) to Denver Intl. Airport (DEN) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your dates and choose either "1 Stop" or "2+ Stops."
What day of the week has the most flights from CGN to DEN?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary based on various factors, such as the time of year and carrier.*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 Denver Intl. Airport (DEN)?
Book a flight from Cologne - Bonn Airport (CGN) to Denver Intl. Airport (DEN) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures later than this have a 22% higher chance of being canceled, on average.**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 Denver Intl. Airport (DEN) last-minute?
Waiting until just before your trip to book a ticket from CGN to DEN often results in higher prices. While you might find some last-minute deals, they're not always guaranteed. Allow some flexibility in your schedule to boost your chances of scoring a bargain.
Is it cheaper to book a CGN to DEN flight and hotel package?
Securing a CGN to DEN flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Select from our wide range of hotels 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 Cologne - Bonn Airport (CGN) to Denver Intl. Airport (DEN)?
If you booked your CGN to DEN flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

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*Available to One Key members.