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$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 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — DEN
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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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 October 28, 2025.

This Delta deal was found by Cheapflights users on 10/28. 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 12/134:17 pmGRB - DEN
1 stop4h 45mDelta
Tue 12/165:45 amDEN - GRB
1 stop4h 48mDelta
Deal found 10/28$251
This Delta deal was found by Cheapflights users on 10/27. 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 12/134:17 pmGRB - DEN
1 stop4h 45mDelta
Thu 12/185:45 amDEN - GRB
1 stop4h 48mDelta
Deal found 10/27$255
This American Airlines deal was found by Cheapflights users on 10/28. 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 12/136:00 amGRB - DEN
2 stops10h 49mAmerican Airlines
Tue 12/167:26 amDEN - GRB
1 stop6h 03mAmerican Airlines
Deal found 10/28$256
This Delta deal was found by Cheapflights users on 10/28. 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 11/2111:10 amGRB - DEN
1 stop7h 15mDelta
Mon 11/245:45 amDEN - GRB
1 stop4h 48mDelta
Deal found 10/28$259
This Delta deal was found by Cheapflights users on 10/26. 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 11/812:02 pmGRB - DEN
1 stop4h 40mDelta
Sat 11/155:45 amDEN - GRB
1 stop4h 48mDelta
Deal found 10/26$270
This Delta deal was found by Cheapflights users on 10/28. 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.
Tue 12/212:13 pmGRB - DEN
1 stop4h 26mDelta
Tue 12/95:45 amDEN - GRB
1 stop4h 48mDelta
Deal found 10/28$275
This Delta deal was found by Cheapflights users on 10/28. 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.
Tue 12/212:13 pmGRB - DEN
1 stop4h 26mDelta
Sun 12/75:45 amDEN - GRB
1 stop4h 48mDelta
Deal found 10/28$279
This Delta deal was found by Cheapflights users on 10/28. 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.
Tue 12/212:13 pmGRB - DEN
1 stop4h 26mDelta
Wed 12/35:45 amDEN - GRB
1 stop4h 48mDelta
Deal found 10/28$285
This United Airlines deal was found by Cheapflights users on 10/28. 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 12/2410:44 amGRB - DEN
1 stop6h 08mUnited Airlines
Mon 12/297:45 amDEN - GRB
1 stop6h 22mUnited Airlines
Deal found 10/28$299
This American Airlines deal was found by Cheapflights users on 10/26. 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.
Tue 12/94:32 pmGRB - DEN
1 stop6h 48mAmerican Airlines
Wed 12/177:26 amDEN - GRB
1 stop6h 03mAmerican Airlines
Deal found 10/26$305
This Delta deal was found by Cheapflights users on 10/28. 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.
Wed 12/34:17 pmGRB - DEN
1 stop4h 45mDelta
Sat 12/61:57 pmDEN - GRB
1 stop20h 36mDelta
Deal found 10/28$308
This Delta deal was found by Cheapflights users on 10/28. 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 12/44:17 pmGRB - DEN
1 stop4h 25mDelta
Tue 12/96:54 amDEN - GRB
2 stops13h 46mDelta
Deal found 10/28$312

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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$251
(Delta)

One-way from

$126
(United Airlines)

Popular in

March

Cheapest in

July

Average price

$388
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
One-way flight from Green Bay Austin-Straubel to Colorado
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($73 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 28, 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

Sat 12/13

4:17 pm-8:02 pm

1 stop4h 45m

Denver Intl

Tue 12/16

5:45 am-11:33 am

1 stop4h 48m

$251

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 12/6

4:17 pm-8:02 pm

1 stop4h 45m

Denver Intl

Tue 12/9

5:45 am-11:33 am

1 stop4h 48m

$251

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Fri 2/20

6:38 pm-10:39 pm

1 stop5h 01m

Denver Intl

Tue 2/24

12:18 pm-8:30 pm

1 stop7h 12m

$255

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 12/6

11:11 am-5:27 pm

1 stop7h 16m

Denver Intl

Mon 12/8

5:45 am-11:33 am

1 stop4h 48m

$255

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Wed 12/3

4:17 pm-8:02 pm

1 stop4h 45m

Denver Intl

Sun 12/7

5:45 am-11:33 am

1 stop4h 48m

$255

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 12/13

4:17 pm-8:02 pm

1 stop4h 45m

Denver Intl

Thu 12/18

5:45 am-11:33 am

1 stop4h 48m

$255

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Wed 12/3

4:17 pm-8:02 pm

1 stop4h 45m

Denver Intl

Mon 12/8

5:45 am-11:33 am

1 stop4h 48m

$255

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Thu 12/4

4:17 pm-7:42 pm

1 stop4h 25m

Denver Intl

Tue 12/9

5:45 am-11:33 am

1 stop4h 48m

$255

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Wed 1/14

7:00 am-1:35 pm

1 stop7h 35m

Denver Intl

Fri 1/23

10:32 am-4:41 pm

1 stop5h 09m

$255

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 12/13

6:00 am-3:49 pm

2 stops10h 49m

Denver Intl

Tue 12/16

7:26 am-2:29 pm

1 stop6h 03m

$256

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 33 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, 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 $243). 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 October 28, 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 October 28, 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
7,994 reviews

Boarding

8.2

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,994 reviews
Delta
7.9
Good
7,994 reviews

Boarding

8.2

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
9,001 reviews
Delta
7.9
Good
7,994 reviews

Boarding

8.2

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,032 reviews
Delta
7.9
Good
7,994 reviews

Boarding

8.2

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Frontier
5.8
Fair
3,124 reviews
Delta
7.9
Good
7,994 reviews

Boarding

8.2

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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 $251, Delta can have you in Colorado from Green Bay in 4h 45m. 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 United Airlines, with whom users have recently found tickets for as low as $126. However, be on the lookout for offers from Delta and American Airlines, 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 - Aspen Pitkin County or Green Bay Austin-Straubel - Colorado Springs, 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 $243). 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.

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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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$94Average$198FlexibilityNo cancel feeOn-time62%
DeltaCheapest$216Average$373FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$238Average$352FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$258Average$518FlexibilityNo cancel feeOn-time69%

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