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Colorado

$251+ Cheap flights from Green Bay (GRB) to Colorado

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — DEN
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap 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 December 12, 2025.

This American Airlines deal was found by Cheapflights users on 12/10. 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 12/255:25 amGRB - DEN
1 stop5h 43mAmerican Airlines
Mon 12/295:44 pmDEN - GRB
1 stop4h 52mAmerican Airlines
Deal found 12/10$334
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Mon 12/2210:44 amGRB - DEN
1 stop6h 45mUnited Airlines
Wed 12/313:20 pmDEN - GRB
1 stop5h 16mUnited Airlines
Deal found 12/10$339
This Delta deal was found by Cheapflights users on 12/10. 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.
Thu 12/186:20 amGRB - DEN
1 stop7h 33mDelta
Thu 12/253:02 pmDEN - GRB
1 stop6h 13mDelta
Deal found 12/10$354
This American Airlines deal was found by Cheapflights users on 12/10. 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.
Mon 12/225:18 pmGRB - DEN
1 stop6h 08mAmerican Airlines
Wed 12/318:07 amDEN - GRB
2 stops9h 25mAmerican Airlines
Deal found 12/10$385
This Delta deal was found by Cheapflights users on 12/10. 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 12/135:15 amGRB - COS
1 stop8h 21mDelta
Mon 12/151:42 pmCOS - GRB
1 stop7h 55mDelta
Deal found 12/10$389
This American Airlines deal was found by Cheapflights users on 12/10. 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 12/137:17 amGRB - COS
2 stops11h 18mAmerican Airlines
Mon 12/1510:37 amCOS - GRB
2 stops11h 54mAmerican Airlines
Deal found 12/10$399
This American Airlines deal was found by Cheapflights users on 12/10. 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 12/185:25 amGRB - DEN
2 stops13h 12mAmerican Airlines
Thu 12/256:44 amDEN - GRB
1 stop6h 49mAmerican Airlines
Deal found 12/10$399
This United Airlines deal was found by Cheapflights users on 12/11. 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 12/123:51 pmGRB - DEN
1 stop5h 13mUnited Airlines
Fri 12/197:45 amDEN - GRB
1 stop6h 22mUnited Airlines
Deal found 12/11$409
This Delta deal was found by Cheapflights users on 12/10. 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 12/1312:13 pmGRB - DEN
1 stop4h 43mDelta
Tue 12/165:45 amDEN - GRB
1 stop4h 48mDelta
Deal found 12/10$419
This American Airlines deal was found by Cheapflights users on 12/9. 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 12/112:59 pmGRB - DEN
2 stops9h 25mAmerican Airlines
Sun 12/147:26 amDEN - GRB
1 stop5h 59mAmerican Airlines
Deal found 12/9$424
This American Airlines deal was found by Cheapflights users on 12/10. 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 12/133:06 pmGRB - DEN
2 stops9h 13mAmerican Airlines
Tue 12/1610:21 amDEN - GRB
2 stops10h 37mAmerican Airlines
Deal found 12/10$429
This United Airlines deal was found by Cheapflights users on 12/10. 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 12/258:00 amGRB - COS
2 stops10h 45mUnited Airlines
Mon 12/295:45 amCOS - GRB
2 stops8h 22mUnited Airlines
Deal found 12/10$580

Find 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$251
(United Airlines)

Popular in

March

Cheapest in

July

Average price

$341
Provider with most accurate pricing for Green Bay Austin-Straubel-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Green Bay Austin-Straubel-Denver Intl flights.
Search Deals
From Green Bay Austin-Straubel to Colorado
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($76 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 12, 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

Wed 1/7

10:42 am-4:34 pm

1 stop6h 52m

Denver Intl

Wed 1/14

7:50 am-2:02 pm

1 stop5h 12m

$251

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Fri 2/20

6:39 pm-10:36 pm

1 stop4h 57m

Denver Intl

Tue 2/24

12:19 pm-8:27 pm

1 stop7h 08m

$255

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Wed 1/7

11:20 am-8:53 pm

2 stops10h 33m

Denver Intl

Wed 1/14

9:01 am-10:14 pm

2 stops12h 13m

$261

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Wed 1/7

11:20 am-10:34 pm

2 stops12h 14m

Denver Intl

Sat 1/10

7:39 am-10:12 pm

2 stops13h 33m

$316

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Wed 1/7

2:39 pm-9:59 pm

1 stop8h 20m

Denver Intl

Sat 1/10

9:40 am-4:47 pm

1 stop6h 07m

$321

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 1/10

2:39 pm-9:59 pm

1 stop8h 20m

Denver Intl

Tue 1/13

11:20 am-7:03 pm

1 stop6h 43m

$321

Green BayGrand Junction

GRB - GJT

GRBGJT

Green Bay Austin-Straubel

Sat 1/24

2:39 pm-10:27 pm

2 stops8h 48m

Grand Junction Regnl

Wed 1/28

7:00 am-4:47 pm

2 stops8h 47m

$329

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Thu 12/25

5:25 am-10:08 am

1 stop5h 43m

Denver Intl

Mon 12/29

5:44 pm-11:36 pm

1 stop4h 52m

$334

Green BayColorado Springs

GRB - COS

GRBCOS

Green Bay Austin-Straubel

Sat 1/24

2:39 pm-10:06 pm

2 stops8h 27m

Colorado Springs

Wed 1/28

5:50 am-3:07 pm

2 stops8h 17m

$360

Green BayDurango

GRB - DRO

GRBDRO

Green Bay Austin-Straubel

Sat 1/10

10:42 am-8:31 pm

2 stops10h 49m

Durango La Plata County

Wed 1/14

10:40 am-9:31 pm

2 stops9h 51m

$369

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 21 results
1
2
3

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, July is the cheapest month in which you can book a flight from Green Bay to Colorado (average of $83). Flying from Green Bay to Colorado in March is currently the most expensive (average of $238). 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 December 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Green Bay to Colorado in the evening. If you’re flexible enough to do this you can expect to save up to 67% on your trip compared to booking a flight in the morning.

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 December 12, 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
7.9
Good
8,007 reviews

Food

7.3

Boarding

8.1

Comfort

7.9

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Boarding

8.1

Comfort

7.9

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,095 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Boarding

8.1

Comfort

7.9

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,050 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Boarding

8.1

Comfort

7.9

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Frontier
5.8
Fair
3,084 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Boarding

8.1

Comfort

7.9

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 $255, United Airlines can have you in Colorado from Green Bay in 4h 57m. 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 cheapest airlines to fly from Green Bay to Colorado one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $78. However, be on the lookout for offers from American Airlines and Delta, as they are both options that can get you from Green Bay to Colorado for a low price.

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

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

  • 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, July is the cheapest month in which you can book a flight from Green Bay to Colorado (average of $83). Flying from Green Bay to Colorado in March is currently the most expensive (average of $238). 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$94Average$198FlexibilityNo cancel feeOn-time62%
DeltaCheapest$216Average$363FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$238Average$351FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$258Average$556FlexibilityNo cancel feeOn-time69%

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