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Colorado

$126+ Cheap flights from Green Bay (GRB) to Colorado

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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — DEN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Green Bay to Colorado

Keep the following information in mind while searching for Green Bay to Colorado flight deals. Data was last updated September 11, 2025.

Round-trip from

$225
(United Airlines)

One-way from

$126
(Delta)

Popular in

March

Cheapest in

July

Average price

$400

Good round-trip deal

$188 or less

Good one-way deal

$158 or less
From Green Bay Austin-Straubel to Colorado
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One-way flight from Green Bay Austin-Straubel to Colorado
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Highest demand for flights based on searches. 17% potential increase in price ($70 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Green Bay Austin-Straubel to Colorado.
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Price to beat on a one-way flight from Green Bay Austin-Straubel to Colorado.
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Find flight deals from Green Bay to Colorado

Cheapest flights from Green Bay to Colorado
Explore the most affordable flight options available from Green Bay to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/315:27 pmGRB - DEN
1 stop5h 22mUnited Airlines
Tue 11/46:00 amDEN - GRB
1 stop5h 33mUnited Airlines
Deal found 9/11$225
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/177:17 amGRB - DEN
1 stop5h 26mAmerican Airlines
Tue 1/2011:59 pmDEN - GRB
2 stops9h 51mAmerican Airlines
Deal found 9/11$230
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:21 pmGRB - DEN
1 stop6h 05mAmerican Airlines
Tue 1/2011:59 pmDEN - GRB
2 stops9h 51mAmerican Airlines
Deal found 9/10$249
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/16:30 amGRB - DEN
1 stop7h 09mDelta
Tue 11/46:05 amDEN - GRB
1 stop4h 17mDelta
Deal found 9/10$251
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3111:06 amGRB - DEN
1 stop7h 22mDelta
Wed 11/56:05 amDEN - GRB
1 stop4h 17mDelta
Deal found 9/11$254
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:02 pmGRB - DEN
1 stop4h 40mDelta
Tue 11/46:05 amDEN - GRB
1 stop4h 17mDelta
Deal found 9/11$255
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/86:00 amGRB - DEN
2 stops8h 55mAmerican Airlines
Sat 11/155:44 pmDEN - GRB
1 stop4h 44mAmerican Airlines
Deal found 9/10$256
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/314:16 pmGRB - DEN
1 stop4h 14mDelta
Sun 11/25:00 amDEN - GRB
1 stop4h 22mDelta
Deal found 9/10$258
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/26:35 pmGRB - DEN
1 stop5h 55mUnited Airlines
Sun 10/57:48 amDEN - GRB
1 stop5h 16mUnited Airlines
Deal found 9/10$259
This American Airlines deal was found by Cheapflights users on 9/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/243:02 pmGRB - DEN
1 stop6h 25mAmerican Airlines
Tue 10/2812:29 pmDEN - GRB
1 stop6h 09mAmerican Airlines
Deal found 9/10$270
This United Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/82:40 pmGRB - COS
2 stops8h 14mUnited Airlines
Wed 10/156:00 amCOS - GRB
1 stop5h 44mUnited Airlines
Deal found 9/10$367
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/223:01 pmGRB - DRO
2 stops8h 14mAmerican Airlines
Fri 9/264:59 pmDRO - GRB
3 stops16h 42mAmerican Airlines
Deal found 9/11$579

Cheapflights Fare Finder

 
Customize your flight search to find flights from Green Bay to Colorado 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 September 11, 2025.
Use the filters below to find and compare flights from Green Bay to Colorado that are best for you.

Fly from

Green Bay

Fly to

Colorado

Route

Depart

Return

Price

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Fri 10/31

5:27 pm-9:49 pm

1 stop5h 22m

Denver Intl

Tue 11/4

6:00 am-12:33 pm

1 stop5h 33m

$225

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 11/1

6:30 am-12:39 pm

1 stop7h 09m

Denver Intl

Tue 11/4

6:05 am-11:22 am

1 stop4h 17m

$251

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 11/8

4:16 pm-7:30 pm

1 stop4h 14m

Denver Intl

Sat 11/15

4:20 pm-9:33 pm

1 stop4h 13m

$251

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 10/18

10:40 am-4:03 pm

1 stop6h 23m

Denver Intl

Tue 10/21

6:00 am-12:44 pm

1 stop5h 44m

$251

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 11/8

4:16 pm-7:30 pm

1 stop4h 14m

Denver Intl

Wed 11/12

6:00 am-11:33 am

1 stop4h 33m

$251

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Wed 12/17

6:20 am-10:07 am

1 stop4h 47m

Denver Intl

Wed 1/21

10:30 am-4:38 pm

1 stop5h 08m

$251

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Fri 10/31

4:16 pm-7:30 pm

1 stop4h 14m

Denver Intl

Tue 11/4

6:05 am-11:22 am

1 stop4h 17m

$254

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 12/13

7:17 am-7:01 pm

2 stops12h 44m

Denver Intl

Tue 12/16

6:21 am-7:28 pm

2 stops12h 07m

$261

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 11/8

9:53 am-8:17 pm

2 stops11h 24m

Denver Intl

Sat 11/15

8:13 am-7:37 pm

2 stops10h 24m

$261

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Wed 12/17

1:35 pm-8:04 pm

1 stop7h 29m

Denver Intl

Tue 1/20

6:00 am-2:02 pm

1 stop7h 02m

$275

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 42 results
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Best time to book a flight from Green Bay to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado from Green Bay 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 Green Bay to Colorado

What is the cheapest month to book a flight from Green Bay to Colorado?

Currently, October is the cheapest month in which you can book a flight from Green Bay to Colorado (average of $197). Flying from Green Bay to Colorado 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.

What is the cheapest time of day to fly from GRB to CO?

Find hourly flight availability from Green Bay to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Green Bay to Colorado as you normally would.

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated September 11, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from Green Bay to Colorado by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Frontier
5.8
Fair
3,177 reviews
Delta
8.0
Very good
7,960 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

  • What airport do you fly from for flights from Green Bay to Colorado?

    Most people fly from Green Bay Austin-Straubel (GRB) if they book a flight from Green Bay to Colorado. Green Bay Austin-Straubel is conveniently located just 5.9 mi from Green Bay’s city center.

  • How popular is this Green Bay to Colorado flight route?

    Within the past month, 2 users have taken a look at flights from Green Bay Austin-Straubel to Colorado.

  • How long is the flight from Green Bay to Colorado?

    For as low as $225, United Airlines can have you in Colorado from Green Bay in 5h 22m. Airlines will cover a distance of 903 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Green Bay to Colorado?

    While some choose either Green Bay Austin-Straubel - Aspen Pitkin County or Green Bay Austin-Straubel - Durango La Plata County, Green Bay Austin-Straubel - Denver Intl is the most popular route from Green Bay to Colorado.

  • What are the cheapest flights from Green Bay to Colorado?

    Looking for the cheapest flight from Green Bay to Colorado? While on average our users pay $212, our data indicates the cheapest price to be $89. The most popular route (Green Bay Austin-Straubel - Denver Intl), is priced around $225.

  • Can I find deals for flights from Green Bay to Colorado that include hotel bookings?

    Yes. In addition to deals on Green Bay to Colorado flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Green Bay to Colorado?

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

  • Can I find deals for business class flights from Green Bay to Colorado?

    Yes. Cheapflights offers flight deals from Green Bay to Colorado 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 Green Bay to Colorado?

    Currently, October is the cheapest month in which you can book a flight from Green Bay to Colorado (average of $197). Flying from Green Bay to Colorado 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

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Alternative routes for Green Bay to Colorado

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Green Bay to Colorado

Discover the top 4 airlines that operate flights from Green Bay to Colorado. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$94Average$198FlexibilityNo cancel feeOn-time62%
DeltaCheapest$218Average$340FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$238Average$339FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$258Average$475FlexibilityNo cancel feeOn-time69%

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