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$517+ Cheap flights from Cologne (CGN) to Denver (DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
CGN — DEN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Cologne to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Cologne (CGN) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$664
(United Airlines)

One-way from

$517
(Kiwi.com)

Popular in

December

Cheapest in

November

Average price

$775
From Cologne Köln/Bonn to Denver Intl
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One-way flight from Cologne Köln/Bonn to Denver Intl
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Highest demand for flights based on searches. 13% potential increase in price ($124 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($46 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Cologne to Denver

Cheapest flights from Cologne to Denver
Explore the most affordable flight options available from Cologne to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/226:05 amCGN - DEN
1 stop15h 40mUnited Airlines
Sun 6/294:15 pmDEN - CGN
1 stop12h 00mUnited Airlines
Deal found 6/10$664
This Expedia deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1010:15 amCGN - DEN
2 stops20h 25mMultiple Airlines
Fri 7/255:32 pmDEN - CGN
2 stops31h 43mMultiple Airlines
Deal found 6/10$683
This Expedia deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1010:15 amCGN - DEN
2 stops20h 25mBritish Airways
Fri 7/256:35 pmDEN - CGN
1 stop30h 40mBritish Airways
Deal found 6/10$694
This Flysmarter deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:25 pmCGN - DEN
1 stop13h 30mLufthansa
Sat 1/38:20 pmDEN - CGN
1 stop14h 45mLufthansa
Deal found 6/10$796
This Billigflug deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/226:05 amCGN - DEN
2 stops24h 00mAir Canada
Sun 6/294:17 pmDEN - CGN
2 stops16h 48mAir Canada
Deal found 6/12$864
This American Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/112:20 pmCGN - DEN
2 stops28h 50mAmerican Airlines
Sun 7/277:01 amDEN - CGN
2 stops29h 24mAmerican Airlines
Deal found 6/12$1,033
This SWISS deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/102:25 pmCGN - DEN
2 stops38h 11mSWISS
Thu 7/2411:25 amDEN - CGN
2 stops26h 10mSWISS
Deal found 6/10$1,223
This Turkish Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1110:30 amCGN - DEN
1 stop39h 25mTurkish Airlines
Sun 7/277:50 pmDEN - CGN
1 stop34h 00mTurkish Airlines
Deal found 6/11$1,630

Cheapflights Fare Finder

Customize your flight search to find flights from Cologne to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Cologne to Denver that are best for you.

Fly from

Cologne

Fly to

Denver

Route

Depart

Return

Price

CologneDenver

CGN - DEN

CGNDEN

Cologne Köln/Bonn

Sun 6/22

6:05 am-1:45 pm

1 stop15h 40m

Denver Intl

Sun 6/29

4:15 pm-12:15 pm

1 stop12h 00m

$664

CologneDenver

CGN - DEN

CGNDEN

Cologne Köln/Bonn

Thu 7/10

10:15 am-10:40 pm

2 stops20h 25m

Denver Intl

Fri 7/25

5:32 pm-9:15 am

2 stops31h 43m

$683

CologneDenver

CGN - DEN

CGNDEN

Cologne Köln/Bonn

Thu 7/10

10:15 am-10:40 pm

2 stops20h 25m

Denver Intl

Fri 7/25

6:35 pm-9:15 am

1 stop30h 40m

$694

CologneDenver

CGN - DEN

CGNDEN

Cologne Köln/Bonn

Sun 7/20

8:40 am-1:45 pm

1 stop13h 05m

Denver Intl

Sat 7/26

4:22 pm-12:15 pm

2 stops35h 53m

$798

CologneDenver

CGN - DEN

CGNDEN

Cologne Köln/Bonn

Sun 6/22

6:05 am-10:05 pm

2 stops24h 00m

Denver Intl

Sun 6/29

4:17 pm-5:05 pm

2 stops16h 48m

$864

CologneDenver

CGN - DEN

CGNDEN

Cologne Köln/Bonn

Fri 7/11

2:20 pm-11:10 am

2 stops28h 50m

Denver Intl

Sun 7/27

7:01 am-8:25 pm

2 stops29h 24m

$1,033

CologneDenver

CGN - DEN

CGNDEN

Cologne Köln/Bonn

Thu 7/10

2:25 pm-8:36 pm

2 stops38h 11m

Denver Intl

Thu 7/24

11:25 am-9:35 pm

2 stops26h 10m

$1,223

CologneDenver

CGN - DEN

CGNDEN

Cologne Köln/Bonn

Fri 7/11

10:30 am-5:55 pm

1 stop39h 25m

Denver Intl

Tue 7/22

7:50 pm-9:30 am

1 stop29h 40m

$1,630

CologneDenver

CGN - DEN

CGNDEN

Cologne Köln/Bonn

Sun 10/12

7:20 pm-10:19 am

3 stops46h 59m

$517

CologneDenver

CGN - DEN

CGNDEN

Cologne Köln/Bonn

Sun 10/12

6:05 am-1:45 pm

1 stop15h 40m

$679

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Cologne to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Cologne with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Cologne to Denver

What is the cheapest month to book a flight from Cologne to Denver?

Currently, October is the cheapest month in which you can book a flight from Cologne to Denver (average of $197). Flying from Cologne to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Denver by month

Plan your trip to Denver by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Denver ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

Temperature in Denver by month

Plan your trip to Denver by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Denver, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated June 12, 2025.
SWISS
7.5
Good
1,623 reviews

Overall

7.5

Entertainment

6.7

Food

7.0

Boarding

7.6

Comfort

7.4

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.
SWISS
7.5
Good
1,623 reviews
SWISS
7.5
Good
1,623 reviews

Overall

7.5

Entertainment

6.7

Food

7.0

Boarding

7.6

Comfort

7.4

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.
United Airlines
7.4
Good
8,790 reviews
SWISS
7.5
Good
1,623 reviews

Overall

7.5

Entertainment

6.7

Food

7.0

Boarding

7.6

Comfort

7.4

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.
Turkish Airlines
7.3
Good
3,848 reviews
SWISS
7.5
Good
1,623 reviews

Overall

7.5

Entertainment

6.7

Food

7.0

Boarding

7.6

Comfort

7.4

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.
American Airlines
7.2
Good
10,000 reviews
SWISS
7.5
Good
1,623 reviews

Overall

7.5

Entertainment

6.7

Food

7.0

Boarding

7.6

Comfort

7.4

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.
Air Canada
7.1
Good
9,531 reviews
SWISS
7.5
Good
1,623 reviews

Overall

7.5

Entertainment

6.7

Food

7.0

Boarding

7.6

Comfort

7.4

Crew

8.2

Reviews

1 / 20
2.0
Mediocre

Jeff,Feb 2025

BER - ZRH

Ground and flight crew are lazy. No food. Late. Ryanair is better.

Related info for your journey

Find useful and relevant information for your journey from Cologne to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Cologne to Denver round-trip?

    Our cheapest airline available from Cologne to Denver is United Airlines. Our recent data shows that you can find tickets from as low as $664 on this airline. Additional options worth looking into are British Airways and Lufthansa, starting at $694 and $798 round-trip. United Airlines is priced at 18% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Cologne to Denver that include hotel bookings?

    Yes. In addition to deals on Cologne to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Cologne to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cologne to Denver.

  • Can I find deals for business class flights from Cologne to Denver?

    Yes. Cheapflights offers flight deals from Cologne to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Cologne to Denver?

    Currently, October is the cheapest month in which you can book a flight from Cologne to Denver (average of $197). Flying from Cologne to Denver in March is currently the most expensive (average of $278). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Cologne?

Book flights to Cologne if you plan to visit one of these locations
Westminster
Black Hawk
Winter Park
Lakewood
Cripple Creek
Golden
Brighton
Silverthorne
Thornton
Frisco
Grand Lake
Broomfield
Central City
Glendale
Copper Mountain
Wheat Ridge
Longmont
Idaho Springs
Greeley
Limon

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