Cheap Flights from Cologne (CGN) to Boulder (WBU)

Popular airlines from Cologne - Bonn Airport (CGN) to Boulder, CO (WBU-Boulder Municipal)

Frequently asked questions

How much does a flight from Cologne - Bonn Airport (CGN) to Boulder, CO (WBU-Boulder Municipal) cost?
Snag a cheap one-way flight or cheap return flight from Cologne - Bonn Airport (CGN) to Boulder, CO (WBU-Boulder Municipal) 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 Cologne - Bonn Airport (CGN) to Boulder, CO (WBU-Boulder Municipal)?
Flying in is a great way to save, as it's the cheapest month for flights between CGN and WBU. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from Cologne - Bonn Airport (CGN) to Boulder, CO (WBU-Boulder Municipal)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll take you from CGN to WBU. Then, 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 Boulder, CO (WBU-Boulder Municipal)?
There are no daily direct flights departing from Cologne - Bonn Airport (CGN) to Boulder, CO (WBU-Boulder Municipal). But you can book 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 WBU?
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 airline.*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 Boulder, CO (WBU-Boulder Municipal)?
To avoid potential delays on the Cologne - Bonn Airport (CGN) to Boulder, CO (WBU-Boulder Municipal) route, aim to travel before 3 PM. Flights after this time are 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 Boulder, CO (WBU-Boulder Municipal) last-minute?
Booking your flight from CGN to WBU right before your journey is typically more expensive. However, if there's some wiggle room with your departure times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a CGN to WBU flight and hotel package?
Compared with arranging flights and hotels separately, booking a CGN to WBU flight and hotel package with Expedia could result in significant savings. What's more, managing everything in one place takes the hassle out of planning your trip. Just pick your flights and select from our extensive range of hotels, then tailor your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Cologne - Bonn Airport (CGN) to Boulder, CO (WBU-Boulder Municipal)?
In most cases, you can reschedule or cancel your CGN to WBU flight. However, additional fees may apply, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you want further information, go to our Customer Service portal.

Travel information

Origin airport
Cologne - Bonn
Destination airport
Boulder Municipal
Distance
4947 mi

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Cologne to Boulder Flights

The cheapest times to fly from Cologne to Boulder

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

 

The best time to book a flight from Cologne to Boulder

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

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 Boulder in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Boulder 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 Boulder 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.

 

Cologne to Boulder Flights

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*Available to One Key members.