HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Denver

$126+ Cheap flights from Green Bay to Denver (GRB - DEN)

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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — DEN
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Green Bay to Denver with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Green Bay Austin-Straubel to Denver Intl are usually found in July or June, booked 87 days in advance, depart on a Saturday or Tuesday and return on a Tuesday

Cheap flight deals from Green Bay to Denver

Discover tips and strategies to find the most affordable flight options for your journey from Green Bay (GRB) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Round-trip from

$251
(Delta)

One-way from

$126
(Delta)

Popular in

March

Cheapest in

July

Average price

$344
From Green Bay Austin-Straubel to Denver Intl
Search Deals
One-way flight from Green Bay Austin-Straubel to Denver Intl
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($79 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Green Bay to Denver

Cheapest flights from Green Bay to Denver
Explore the most affordable flight options available from Green Bay to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Delta deal was found by Cheapflights users on 9/17. 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 11/87:00 amGRB - DEN
1 stop7h 39mDelta
Sat 11/156:00 amDEN - GRB
1 stop4h 33mDelta
Deal found 9/17$251
This Delta deal was found by Cheapflights users on 9/17. 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 10/245:20 pmGRB - DEN
1 stop5h 46mDelta
Tue 10/286:05 amDEN - GRB
1 stop4h 17mDelta
Deal found 9/17$255
This American Airlines deal was found by Cheapflights users on 9/15. 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 11/87:17 amGRB - DEN
2 stops11h 28mAmerican Airlines
Sat 11/1511:26 amDEN - GRB
1 stop7h 11mAmerican Airlines
Deal found 9/15$256
This Delta deal was found by Cheapflights users on 9/15. 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 10/306:30 amGRB - DEN
1 stop7h 09mDelta
Sun 11/25:00 amDEN - GRB
1 stop4h 22mDelta
Deal found 9/15$259
This American Airlines deal was found by Cheapflights users on 9/15. 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 11/133:09 pmGRB - DEN
1 stop8h 13mAmerican Airlines
Tue 11/186:23 amDEN - GRB
2 stops11h 59mAmerican Airlines
Deal found 9/15$260
This American Airlines deal was found by Cheapflights users on 9/16. 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 12/52:59 pmGRB - DEN
2 stops9h 06mAmerican Airlines
Mon 12/812:30 pmDEN - GRB
1 stop6h 59mAmerican Airlines
Deal found 9/16$264
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/44:35 pmGRB - DEN
1 stop6h 41mAmerican Airlines
Tue 10/75:28 pmDEN - GRB
1 stop5h 02mAmerican Airlines
Deal found 9/14$270
This American Airlines deal was found by Cheapflights users on 9/17. 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 12/185:14 pmGRB - DEN
1 stop6h 12mAmerican Airlines
Wed 1/214:21 pmDEN - GRB
1 stop4h 15mAmerican Airlines
Deal found 9/17$274
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 10/1810:40 amGRB - DEN
1 stop5h 02mUnited Airlines
Fri 10/242:45 pmDEN - GRB
1 stop5h 13mUnited Airlines
Deal found 9/15$279

Cheapflights Fare Finder

 
Customize your flight search to find flights from Green Bay to Denver 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 17, 2025.
Use the filters below to find and compare flights from Green Bay to Denver that are best for you.

Fly from

Green Bay

Fly to

Denver

Route

Depart

Return

Price

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

10:18 am-4:16 pm

1 stop4h 58m

$251

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 10/25

6:30 am-10:00 am

1 stop4h 30m

Denver Intl

Wed 10/29

6:05 am-11:22 am

1 stop4h 17m

$251

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Fri 10/24

6:35 pm-11:30 pm

1 stop5h 55m

Denver Intl

Tue 10/28

6:00 am-12:33 pm

1 stop5h 33m

$255

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Fri 10/24

5:20 pm-10:06 pm

1 stop5h 46m

Denver Intl

Tue 10/28

6:05 am-11:22 am

1 stop4h 17m

$255

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Thu 10/30

6:30 am-12:39 pm

1 stop7h 09m

Denver Intl

Sun 11/2

5:00 am-10:22 am

1 stop4h 22m

$259

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 12/13

3:06 pm-11:19 pm

2 stops9h 13m

Denver Intl

Tue 12/16

7:49 am-7:28 pm

2 stops10h 39m

$261

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 11/8

7:17 am-5:45 pm

2 stops11h 28m

Denver Intl

Sat 11/15

8:13 am-8:46 pm

2 stops11h 33m

$261

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Fri 1/30

6:03 am-9:57 am

1 stop4h 54m

Denver Intl

Sun 2/1

11:59 pm-10:50 am

2 stops9h 51m

$264

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Tue 12/16

7:17 am-11:43 am

1 stop5h 26m

$126

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Wed 12/3

12:13 pm-3:39 pm

1 stop4h 26m

$126

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 14 results
1
2

Best time to book a flight from Green Bay to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver 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 Denver

How far ahead should I book a flight from Green Bay to Denver?

Use this chart to determine the optimal time to book a round-trip flight from Green Bay to Denver. Price data was last updated on September 12, 2025.

To ensure you get the cheapest price possible for a flight from Green Bay to Denver, you should look to book at least 87 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

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

Find hourly flight availability from Green Bay to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

When flying from Green Bay to Denver, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Green Bay to Denver?

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated September 17, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Green Bay to Denver have to say. 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
7,961 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

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
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

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
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

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
7,961 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

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
3,173 reviews
Delta
8.0
Very good
7,961 reviews

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

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 Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Flights from Green Bay Austin-Straubel to Denver Intl have been viewed 2 times in the past calendar month.

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

    Departing from Green Bay to Denver will take you 4h 14m. There are 903 mi between Green Bay and Denver.

  • What are the cheapest airlines flying from Green Bay to Denver round-trip?

    Flying on Frontier is currently your cheapest option to Denver, with prices starting at $94. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $218 and $238, respectively. Frontier is priced at 70% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

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

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

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Black Hawk
Westminster
Golden
Winter Park
Lakewood
Broomfield
Greeley
Lone Tree
Cripple Creek
Thornton
Silverthorne
Manitou Springs
Fort Morgan
Glendale
Wheat Ridge
Brighton
Longmont
Idaho Springs
Parker
Sterling

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Green Bay to Denver

See prices for flight routes from nearby airports that may be better suited for you.
Minneapolis to Denver flights
O'Hare Intl to Denver flights
Appleton to Denver flights
Madison to Denver flights
Milwaukee to Denver flights
O'Hare Intl to Colorado Springs flights
O'Hare Intl to Vail flights
O'Hare Intl to Hayden flights
O'Hare Intl to Aspen flights
O'Hare Intl to Montrose flights
Minneapolis to Colorado Springs flights
O'Hare Intl to Grand Junction flights
Minneapolis to Grand Junction flights
Milwaukee to Colorado Springs flights
Minneapolis to Hayden flights
Wausau to Denver flights
Minneapolis to Durango flights
Duluth to Denver flights
O'Hare Intl to Gunnison flights
Madison to Grand Junction flights
Milwaukee to Durango flights
Milwaukee to Grand Junction flights
Milwaukee to Hayden flights
O'Hare Intl to Durango flights
Appleton to Colorado Springs flights
Madison to Colorado Springs flights
Minneapolis to Montrose flights
Minneapolis to Aspen flights
Minneapolis to Vail flights
Milwaukee to Vail flights
Madison to Durango flights
Madison to Aspen flights
Eau Claire to Denver flights
Madison to Montrose flights
Milwaukee to Aspen flights
Milwaukee to Montrose flights
Rhinelander to Denver flights
Appleton to Grand Junction flights
Milwaukee to Gunnison flights
Appleton to Aspen flights
Green Bay to Grand Junction flights
La Crosse to Denver flights
Appleton to Durango flights
Wausau to Colorado Springs flights
Rhinelander to Grand Junction flights
Green Bay to Colorado Springs flights
Escanaba to Denver flights
La Crosse to Colorado Springs flights

Top 4 airlines flying from Green Bay to Denver

Discover the top 4 airlines that operate flights from Green Bay to Denver. 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 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$94Average$198FlexibilityNo cancel feeOn-time62%
DeltaCheapest$218Average$335FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$238Average$340FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$258Average$400FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.