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 62% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 4 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?

United Airlines, American Airlines, and Delta 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 3 operators available for flights from Green Bay Austin-Straubel Airport to Colorado as of October 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.

$276 Cheap Flights from Green Bay to Colorado in 2026/27

Discover deals from 900+ travel sites with momondo.

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.

8:21 pm - 12:30 amGRB Green Bay Austin-Straubel-DEN Denver Intl

5h 09m1 stop Chicago O'Hare Intl

9:14 am - 5:46 pmDEN Denver Intl-GRB Green Bay Austin-Straubel

7h 32m1 stop Chicago O'Hare Intl

$291American Airlines

Wed, Dec 2 - Sat, Dec 5

8:09 pm - 12:23 amGRB Green Bay Austin-Straubel-DEN Denver Intl

5h 14m1 stop Chicago O'Hare Intl

6:21 pm - 11:53 pmDEN Denver Intl-GRB Green Bay Austin-Straubel

4h 32m1 stop Chicago O'Hare Intl

$291American Airlines

Wed, Feb 3 - Tue, Feb 9

8:21 pm - 12:30 amGRB Green Bay Austin-Straubel-DEN Denver Intl

5h 09m1 stop Chicago O'Hare Intl

1:15 pm - 12:20 amDEN Denver Intl-GRB Green Bay Austin-Straubel

10h 05m2 stops Dallas/Fort Worth Chicago O'Hare Intl

$296American Airlines

Wed, Dec 2 - Sat, Dec 5

9:59 am - 5:27 pmGRB Green Bay Austin-Straubel-DEN Denver Intl

8h 28m1 stop Chicago O'Hare Intl

1:10 pm - 11:53 pmDEN Denver Intl-GRB Green Bay Austin-Straubel

9h 43m2 stops Dallas/Fort Worth Chicago O'Hare Intl

$296American Airlines

Wed, Feb 3 - Tue, Feb 9

5:32 pm - 11:49 pmGRB Green Bay Austin-Straubel-DEN Denver Intl

7h 17m1 stop Minneapolis St Paul

6:30 am - 11:54 amDEN Denver Intl-GRB Green Bay Austin-Straubel

4h 24m1 stop Minneapolis St Paul

$301Delta

Tue, Dec 1 - Sat, Dec 5

5:00 pm - 10:59 pmGRB Green Bay Austin-Straubel-DEN Denver Intl

6h 59m1 stop Minneapolis St Paul

6:10 am - 11:24 amDEN Denver Intl-GRB Green Bay Austin-Straubel

4h 14m1 stop Minneapolis St Paul

$311Delta

Wed, Mar 31 - Tue, Apr 6

1:58 pm - 7:43 pmGRB Green Bay Austin-Straubel-DEN Denver Intl

6h 45m1 stop Chicago O'Hare Intl

6:00 am - 12:45 pmDEN Denver Intl-GRB Green Bay Austin-Straubel

5h 45m1 stop Chicago O'Hare Intl

$311United Airlines

Sat, Nov 21 - Tue, Nov 24

1:22 pm - 5:38 pmGRB Green Bay Austin-Straubel-DEN Denver Intl

5h 16m1 stop Chicago O'Hare Intl

6:00 am - 12:47 pmDEN Denver Intl-GRB Green Bay Austin-Straubel

5h 47m1 stop Chicago O'Hare Intl

$311United Airlines

Wed, Jan 20 - Wed, Jan 27

4:00 pm - 8:00 pmGRB Green Bay Austin-Straubel-DEN Denver Intl

5h 00m1 stop Minneapolis St Paul

11:10 am - 3:54 pmDEN Denver Intl-GRB Green Bay Austin-Straubel

3h 44m1 stop Minneapolis St Paul

$311Delta

Wed, Feb 3 - Tue, Feb 9

9:55 am - 3:00 pmGRB Green Bay Austin-Straubel-DEN Denver Intl

6h 05m1 stop Chicago O'Hare Intl

6:00 am - 12:47 pmDEN Denver Intl-GRB Green Bay Austin-Straubel

5h 47m1 stop Chicago O'Hare Intl

$330United Airlines

Wed, Jan 20 - Mon, Feb 1

Cheap last minute flights

Enter your travel dates to find the best prices.

8:04 pm - 12:36 amGRB Green Bay Austin-Straubel-DEN Denver Intl

5h 32m1 stop Chicago O'Hare Intl

6:09 pm - 12:12 amDEN Denver Intl-GRB Green Bay Austin-Straubel

5h 03m1 stop Chicago O'Hare Intl

$418American Airlines

Wed, Oct 21 - Mon, Oct 26

8:04 pm - 12:36 amGRB Green Bay Austin-Straubel-DEN Denver Intl

5h 32m1 stop Chicago O'Hare Intl

6:46 am - 2:02 pmDEN Denver Intl-GRB Green Bay Austin-Straubel

6h 16m1 stop Chicago O'Hare Intl

$418American Airlines

Wed, Oct 21 - Sun, Oct 25

8:04 pm - 12:36 amGRB Green Bay Austin-Straubel-DEN Denver Intl

5h 32m1 stop Chicago O'Hare Intl

1:07 pm - 12:12 amDEN Denver Intl-GRB Green Bay Austin-Straubel

10h 05m2 stops Dallas/Fort Worth Chicago O'Hare Intl

$423American Airlines

Wed, Oct 21 - Mon, Oct 26

8:04 pm - 12:36 amGRB Green Bay Austin-Straubel-DEN Denver Intl

5h 32m1 stop Chicago O'Hare Intl

8:00 am - 2:02 pmDEN Denver Intl-GRB Green Bay Austin-Straubel

5h 02m1 stop Chicago O'Hare Intl

$425American Airlines

Wed, Oct 21 - Mon, Oct 26

6:00 am - 10:02 amGRB Green Bay Austin-Straubel-DEN Denver Intl

5h 02m1 stop Minneapolis St Paul

6:05 am - 11:37 amDEN Denver Intl-GRB Green Bay Austin-Straubel

4h 32m1 stop Minneapolis St Paul

$688Delta

Sat, Oct 24 - Wed, Oct 28

4:51 pm - 8:06 pmGRB Green Bay Austin-Straubel-DEN Denver Intl

4h 15m1 stop Minneapolis St Paul

12:59 pm - 10:27 pmDEN Denver Intl-GRB Green Bay Austin-Straubel

8h 28m1 stop Atlanta Hartsfield-Jackson

$798Delta

Sat, Oct 24 - Wed, Oct 28

6:00 am - 10:02 amGRB Green Bay Austin-Straubel-DEN Denver Intl

5h 02m1 stop Minneapolis St Paul

6:05 am - 11:37 amDEN Denver Intl-GRB Green Bay Austin-Straubel

4h 32m1 stop Minneapolis St Paul

$798Delta

Sat, Oct 24 - Wed, Oct 28

9:05 am - 3:17 pmGRB Green Bay Austin-Straubel-DEN Denver Intl

7h 12m1 stop Chicago O'Hare Intl

9:04 pm - 12:30 pmDEN Denver Intl-GRB Green Bay Austin-Straubel

14h 26m2 stops Sioux Falls Joe Foss Field Chicago O'Hare Intl

$997United Airlines

Wed, Oct 21 - Fri, Oct 23

9:05 am - 9:58 pmGRB Green Bay Austin-Straubel-ASE Aspen Pitkin County

13h 53m1 stop Chicago O'Hare Intl

12:15 pm - 9:03 pmASE Aspen Pitkin County-GRB Green Bay Austin-Straubel

7h 48m1 stop Chicago O'Hare Intl

$1,355United Airlines

Tue, Oct 20 - Sat, Oct 24

5:00 am - 9:58 pmGRB Green Bay Austin-Straubel-ASE Aspen Pitkin County

17h 58m1 stop Chicago O'Hare Intl

8:21 am - 4:54 pmASE Aspen Pitkin County-GRB Green Bay Austin-Straubel

7h 33m1 stop Chicago O'Hare Intl

$1,355United Airlines

Tue, Oct 20 - Sat, Oct 24

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American Airlines flights from Green Bay to Colorado

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

American Airlines

Feb 3

GRB9:59 amGreen Bay Austin-Straubel

8h 28m

1 stop

DEN5:27 pmDenver Intl

Feb 9

DEN1:10 pmDenver Intl

9h 43m

2 stops

GRB11:53 pmGreen Bay Austin-Straubel

$316

American Airlines

Feb 3

GRB9:59 amGreen Bay Austin-Straubel

12h 49m

2 stops

DEN9:48 pmDenver Intl

Feb 9

DEN10:58 amDenver Intl

11h 55m

2 stops

GRB11:53 pmGreen Bay Austin-Straubel

$321

American Airlines

Nov 14

GRB5:50 amGreen Bay Austin-Straubel

6h 49m

1 stop

DEN11:39 amDenver Intl

Nov 21

DEN6:10 pmDenver Intl

4h 57m

1 stop

GRB12:07 amGreen Bay Austin-Straubel

$330

United Airlines flights from Green Bay to Colorado

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

United Airlines

Dec 17

GRB8:00 amGreen Bay Austin-Straubel

7h 55m

1 stop

DEN2:55 pmDenver Intl

Dec 20

DEN3:50 pmDenver Intl

6h 25m

1 stop

GRB11:15 pmGreen Bay Austin-Straubel

$364

United Airlines

Nov 14

GRB6:15 amGreen Bay Austin-Straubel

5h 11m

1 stop

DEN10:26 amDenver Intl

Nov 17

DEN6:00 amDenver Intl

7h 39m

1 stop

GRB2:39 pmGreen Bay Austin-Straubel

$391

United Airlines

Dec 18

GRB6:00 amGreen Bay Austin-Straubel

5h 35m

1 stop

DEN10:35 amDenver Intl

Dec 28

DEN3:50 pmDenver Intl

6h 25m

1 stop

GRB11:15 pmGreen Bay Austin-Straubel

$399

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Green BayDenver

GRB Green Bay Austin-Straubel - DEN Denver Intl

GRBDEN

Green Bay Austin-Straubel

Wed 12/2

8:21 pm-12:30 am

1 stop5h 09m

Denver Intl

Sat 12/5

9:14 am-5:46 pm

1 stop7h 32m

$291

Green BayDenver

GRB Green Bay Austin-Straubel - DEN Denver Intl

GRBDEN

Green Bay Austin-Straubel

Wed 2/3

8:09 pm-12:23 am

1 stop5h 14m

Denver Intl

Tue 2/9

6:21 pm-11:53 pm

1 stop4h 32m

$291

Green BayDenver

GRB Green Bay Austin-Straubel - DEN Denver Intl

GRBDEN

Green Bay Austin-Straubel

Wed 12/2

8:21 pm-12:30 am

1 stop5h 09m

Denver Intl

Sat 12/5

1:15 pm-12:20 am

2 stops10h 05m

$296

Green BayDenver

GRB Green Bay Austin-Straubel - DEN Denver Intl

GRBDEN

Green Bay Austin-Straubel

Wed 2/3

9:59 am-5:27 pm

1 stop8h 28m

Denver Intl

Tue 2/9

1:10 pm-11:53 pm

2 stops9h 43m

$296

Green BayDenver

GRB Green Bay Austin-Straubel - DEN Denver Intl

GRBDEN

Green Bay Austin-Straubel

Tue 12/1

5:32 pm-11:49 pm

1 stop7h 17m

Denver Intl

Sat 12/5

6:30 am-11:54 am

1 stop4h 24m

$301

Green BayDenver

GRB Green Bay Austin-Straubel - DEN Denver Intl

GRBDEN

Green Bay Austin-Straubel

Wed 3/31

5:00 pm-10:59 pm

1 stop6h 59m

Denver Intl

Tue 4/6

6:10 am-11:24 am

1 stop4h 14m

$311

Green BayDenver

GRB Green Bay Austin-Straubel - DEN Denver Intl

GRBDEN

Green Bay Austin-Straubel

Sat 11/21

1:58 pm-7:43 pm

1 stop6h 45m

Denver Intl

Tue 11/24

6:00 am-12:45 pm

1 stop5h 45m

$311

Green BayDenver

GRB Green Bay Austin-Straubel - DEN Denver Intl

GRBDEN

Green Bay Austin-Straubel

Wed 1/20

1:22 pm-5:38 pm

1 stop5h 16m

Denver Intl

Wed 1/27

6:00 am-12:47 pm

1 stop5h 47m

$311

Quickest round-trip

Green BayDenver

GRB Green Bay Austin-Straubel - DEN Denver Intl

GRBDEN

Green Bay Austin-Straubel

Wed 2/3

4:00 pm-8:00 pm

1 stop5h 00m

Denver Intl

Tue 2/9

11:10 am-3:54 pm

1 stop3h 44m

$311

Green BayDenver

GRB Green Bay Austin-Straubel - DEN Denver Intl

GRBDEN

Green Bay Austin-Straubel

Wed 1/20

9:55 am-3:00 pm

1 stop6h 05m

Denver Intl

Mon 2/1

6:00 am-12:47 pm

1 stop5h 47m

$330

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 March is, on average, the cheapest month to fly to Colorado from Green Bay, with most prices found around $309. The month of January is another great option to travel to Colorado, with average flight prices from Green Bay averaging around $319.

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

You could potentially save up to 24% on your flight if you consider stops on a Green Bay to Colorado flight.

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

Best Price Found	$276
Fastest flight time	4h 26m
Direct flights	None

The best one-way flight to Colorado from Green Bay in the past 72 hours is $276. The best round-trip flight deal from Green Bay to Colorado found on momondo in the last 72 hours is $291.

The fastest flight from Green Bay to Colorado takes 4h 26m

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

Search flight deals

Frequently asked questions about flying from Green Bay 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 3 operators available for flights from Green Bay Austin-Straubel Airport to Colorado as of October 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 A321neo (40.00% of total bookings). The next most popular plane models are Airbus A321-100/200 (20.00%), Embraer 175 (Enhanced Winglets) (20.00%), and Canadair (Bombardier) Regional Jet 900 (20.00%).

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
Delta	PriceFrom $256	Free Cancellation	Rating 7.8 8,652 reviews	Search Delta flights
United Airlines	PriceFrom $258	Free Cancellation	Rating 7.4 10,384 reviews	Search United Airlines flights
American Airlines	PriceFrom $260	Free Cancellation	Rating 7.0 12,175 reviews	Search American 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.