What airlines fly to Colorado?

United Airlines, Allegiant Air and Delta are the top three most popular airlines that fly to Colorado from Green Bay according to our data. United Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 5 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Green Bay Austin-Straubel to Colorado?

Delta, United Airlines, and American Airlines are the most popular carriers operating from Green Bay Austin-Straubel to Colorado

When did momondo last update prices for flights from Green Bay Austin-Straubel Airport to Colorado?

Prices for flights from Green Bay Austin-Straubel Airport to Colorado are updated daily.

How many operators does momondo search for flights from Green Bay Austin-Straubel Airport to Colorado?

There are 4 operators available for flights from Green Bay Austin-Straubel Airport to Colorado as of February 2026.

How old do you have to be to fly from Green Bay Austin-Straubel Airport to Colorado?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Green Bay Austin-Straubel Airport to Colorado.

What documentation or ID do you need to fly to Colorado?

The necessary travel and health documents for your Colorado trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$126 Cheap Flights from Green Bay to Colorado in 2026

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Find the cheapest flights from Green Bay to Colorado

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:17 pm - 9:28 pm

GRB

DEN

5h 11m

1 stop

6:20 am - 11:18 am

DEN

GRB

3h 58m

1 stop

$251Delta

Wed, Apr 1 - Wed, Apr 8

4:19 pm - 7:51 pm

GRB

DEN

4h 32m

1 stop

6:30 am - 11:18 am

DEN

GRB

3h 48m

1 stop

$255Delta

Sat, Apr 4 - Sat, Apr 18

9:42 am - 5:02 pm

GRB

DEN

8h 20m

1 stop

2:41 pm - 11:31 pm

DEN

GRB

7h 50m

2 stops

$256American Airlines

Sat, Apr 18 - Sat, Apr 25

7:30 am - 5:39 pm

GRB

DEN

11h 09m

2 stops

11:46 am - 9:58 pm

DEN

GRB

9h 12m

2 stops

$261American Airlines

Sat, Apr 18 - Sat, Apr 25

6:38 pm - 10:37 pm

GRB

DEN

4h 59m

1 stop

11:46 am - 11:31 pm

DEN

GRB

10h 45m

2 stops

$264American Airlines

Sat, Apr 4 - Wed, Apr 15

11:12 am - 5:17 pm

GRB

DEN

7h 05m

1 stop

5:06 pm - 10:02 pm

DEN

GRB

3h 56m

1 stop

$265Delta

Fri, Apr 3 - Tue, Apr 7

4:19 pm - 7:51 pm

GRB

DEN

4h 32m

1 stop

6:30 am - 11:18 am

DEN

GRB

3h 48m

1 stop

$269Delta

Sat, Apr 4 - Fri, Apr 17

5:00 am - 10:47 am

GRB

COS

6h 47m

1 stop

11:43 am - 7:01 pm

COS

GRB

6h 18m

1 stop

$354United Airlines

Fri, May 1 - Mon, May 4

10:34 am - 8:37 pm

GRB

GJT

11h 03m

2 stops

5:30 am - 2:06 pm

GJT

GRB

7h 36m

2 stops

$429United Airlines

Sat, Mar 14 - Wed, Mar 18

5:30 pm - 11:59 pm

GRB

COS

7h 29m

2 stops

11:43 am - 7:01 pm

COS

GRB

6h 18m

1 stop

$453United Airlines

Fri, May 1 - Mon, May 4

United Airlines flights from Green Bay to Colorado

Our best United Airlines deals on Green Bay to Colorado flight tickets

United Airlines

Aug 5

GRB2:35 pmGreen Bay Austin-Straubel

8h 24m

1 stop

DEN9:59 pmDenver Intl

Aug 11

DEN5:30 pmDenver Intl

5h 58m

1 stop

GRB12:28 amGreen Bay Austin-Straubel

$327

United Airlines

May 21

GRB8:25 pmGreen Bay Austin-Straubel

5h 28m

1 stop

DEN12:53 amDenver Intl

Jun 4

DEN6:00 amDenver Intl

4h 59m

1 stop

GRB11:59 amGreen Bay Austin-Straubel

$328

United Airlines

Apr 10

GRB5:35 pmGreen Bay Austin-Straubel

5h 30m

1 stop

DEN10:05 pmDenver Intl

Apr 13

DEN5:44 pmDenver Intl

5h 13m

1 stop

GRB11:57 pmGreen Bay Austin-Straubel

$349

Delta flights from Green Bay to Colorado

Our best Delta deals on Green Bay to Colorado flight tickets

Delta

Apr 1

GRB5:17 pmGreen Bay Austin-Straubel

5h 11m

1 stop

DEN9:28 pmDenver Intl

Apr 8

DEN6:20 amDenver Intl

3h 58m

1 stop

GRB11:18 amGreen Bay Austin-Straubel

$251

Delta

Apr 4

GRB4:19 pmGreen Bay Austin-Straubel

4h 32m

1 stop

DEN7:51 pmDenver Intl

Apr 18

DEN6:30 amDenver Intl

3h 48m

1 stop

GRB11:18 amGreen Bay Austin-Straubel

$255

Delta

Apr 3

GRB11:12 amGreen Bay Austin-Straubel

7h 05m

1 stop

DEN5:17 pmDenver Intl

Apr 7

DEN5:06 pmDenver Intl

3h 56m

1 stop

GRB10:02 pmGreen Bay Austin-Straubel

$265

Fly from

Fly to

Route

Depart

Return

Price

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Wed 4/1

5:17 pm-9:28 pm

1 stop5h 11m

Denver Intl

Wed 4/8

6:20 am-11:18 am

1 stop3h 58m

$251

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 4/4

4:19 pm-7:51 pm

1 stop4h 32m

Denver Intl

Sat 4/18

6:30 am-11:18 am

1 stop3h 48m

$255

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 4/18

9:42 am-5:02 pm

1 stop8h 20m

Denver Intl

Sat 4/25

2:41 pm-11:31 pm

2 stops7h 50m

$256

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 4/18

7:30 am-5:39 pm

2 stops11h 09m

Denver Intl

Sat 4/25

11:46 am-9:58 pm

2 stops9h 12m

$261

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 4/4

6:38 pm-10:37 pm

1 stop4h 59m

Denver Intl

Wed 4/15

11:46 am-11:31 pm

2 stops10h 45m

$264

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Fri 4/3

11:12 am-5:17 pm

1 stop7h 05m

Denver Intl

Tue 4/7

5:06 pm-10:02 pm

1 stop3h 56m

$265

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 4/4

4:19 pm-7:51 pm

1 stop4h 32m

Denver Intl

Fri 4/17

6:30 am-11:18 am

1 stop3h 48m

$269

Green BayColorado Springs

GRB - COS

GRBCOS

Green Bay Austin-Straubel

Fri 5/1

5:00 am-10:47 am

1 stop6h 47m

Colorado Springs

Mon 5/4

11:43 am-7:01 pm

1 stop6h 18m

$354

Green BayGrand Junction

GRB - GJT

GRBGJT

Green Bay Austin-Straubel

Sat 3/14

10:34 am-8:37 pm

2 stops11h 03m

Grand Junction Regnl

Wed 3/18

5:30 am-2:06 pm

2 stops7h 36m

$429

Green BayColorado Springs

GRB - COS

GRBCOS

Green Bay Austin-Straubel

Fri 5/1

5:30 pm-11:59 pm

2 stops7h 29m

Colorado Springs

Mon 5/4

11:43 am-7:01 pm

1 stop6h 18m

$453

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Green Bay to Colorado

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Colorado?

The month of July is, on average, the cheapest month to fly to Colorado from Green Bay, with most prices found around $185. The month of June is another great option to travel to Colorado, with average flight prices from Green Bay averaging around $208.

What is the cheapest day to depart on your flight to Colorado?

The cheapest day to depart from Green Bay to Colorado is on a Saturday when prices can be found for as low as $149. On the other hand, Wednesday is the most expensive day to depart from Green Bay because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $210.

What is the cheapest Green Bay Austin-Straubel to Colorado flight route?

Fly from Green Bay Austin-Straubel to Denver Intl for the best Green Bay Austin-Straubel - Colorado flight prices

How far in advance should I book a flight to Colorado?

You are more likely to see cheaper flights to Colorado from Green Bay when booking weeks ahead of your departure date. In general, you can expect to find flights to Colorado for around $296 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Colorado from Green Bay for as low as $192 on momondo.

What cabin class options are available on Green Bay Austin-Straubel to Colorado flights?

There is only 1 cabin class available to choose from on Green Bay Austin-Straubel to Colorado flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Green Bay to Colorado flights?

No. A direct flight is the cheapest option for a flight between Green Bay to Colorado.

Cheap Green Bay to Colorado flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Green Bay to Colorado

Fastest flight time	5h 00m
Direct flights	None

The fastest flight from Green Bay to Colorado takes 5h 00m

There are no direct flights from Green Bay to Colorado. There are no popular flight routes from Green Bay to Colorado.

Search flight deals

When did momondo last update prices for flights from Green Bay Austin-Straubel Airport to Colorado?
Prices for flights from Green Bay Austin-Straubel Airport to Colorado are updated daily.
How many operators does momondo search for flights from Green Bay Austin-Straubel Airport to Colorado?
There are 4 operators available for flights from Green Bay Austin-Straubel Airport to Colorado as of February 2026.
How old do you have to be to fly from Green Bay Austin-Straubel Airport to Colorado?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Green Bay Austin-Straubel Airport to Colorado.
What documentation or ID do you need to fly to Colorado?
The necessary travel and health documents for your Colorado trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Green Bay to Colorado?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Green Bay to Colorado is Airbus A320-100/200 (21.05% of total bookings). The next most popular plane models are Airbus A321neo (15.79%), Boeing 737-800 (15.79%), and Boeing 737 MAX 8 (5.26%).

Best airlines flying from Green Bay to Colorado

Compare and see reviews for airlines that fly from Green Bay to Colorado with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $87	Free Cancellation	Rating 5.7 3,041 reviews	Search Frontier flights
Delta	PriceFrom $179	Free Cancellation	Rating 7.9 8,245 reviews	Search Delta flights
American Airlines	PriceFrom $204	Free Cancellation	Rating 7.1 11,367 reviews	Search American Airlines flights
United Airlines	PriceFrom $219	Free Cancellation	Rating 7.4 9,362 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Green Bay to Colorado?

It is quick and easy to find Green Bay to Colorado flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Colorado that suits you.

Can I find flights from Green Bay to Colorado with flexible booking policies on momondo?

Flights from Green Bay to Colorado with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Green Bay to Colorado?

Once all potential Green Bay to Colorado flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Green Bay to Colorado right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Colorado from Green Bay. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.