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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — DEN
Mar 25 — Apr 11
Wed 3/25
Wed 4/1
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

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 February 23, 2026.

This Delta deal was found by Cheapflights users on 2/20. 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 3/175:17 pm
GRB
-
DEN
1 stop5h 11m
Delta
Wed 3/256:20 am
DEN
-
GRB
1 stop3h 58m
Delta
Deal found 2/20$251
This Delta deal was found by Cheapflights users on 2/20. 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 4/114:19 pm
GRB
-
DEN
1 stop4h 32m
Delta
Sat 4/186:30 am
DEN
-
GRB
1 stop3h 48m
Delta
Deal found 2/20$255
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Wed 4/297:30 am
GRB
-
DEN
1 stop5h 14m
American Airlines
Sat 5/211:46 am
DEN
-
GRB
2 stops9h 12m
American Airlines
Deal found 2/19$256
This Delta deal was found by Cheapflights users on 2/20. 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 4/912:00 pm
GRB
-
DEN
1 stop5h 00m
Delta
Sat 4/186:30 am
DEN
-
GRB
1 stop3h 48m
Delta
Deal found 2/20$265
This Delta deal was found by Cheapflights users on 2/20. 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 4/1111:07 am
GRB
-
DEN
1 stop7h 10m
Delta
Fri 4/176:30 am
DEN
-
GRB
1 stop3h 48m
Delta
Deal found 2/20$269
This American Airlines deal was found by Cheapflights users on 2/19. 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 3/246:38 pm
GRB
-
DEN
1 stop4h 59m
American Airlines
Mon 3/307:00 am
DEN
-
GRB
2 stops10h 01m
American Airlines
Deal found 2/19$270
This American Airlines deal was found by Cheapflights users on 2/22. 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 5/95:40 am
GRB
-
DEN
1 stop5h 17m
American Airlines
Sat 5/165:44 pm
DEN
-
GRB
1 stop4h 51m
American Airlines
Deal found 2/22$274
This American Airlines deal was found by Cheapflights users on 2/20. 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 6/26:49 pm
GRB
-
DEN
1 stop6h 25m
American Airlines
Mon 6/85:41 pm
DEN
-
GRB
1 stop5h 10m
American Airlines
Deal found 2/20$291

Find 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 February 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$251
(Delta)

One-way from

$126
(Delta)

Popular in

October

Cheapest in

July

Average price

$294
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 Denver Intl
Search Deals
One-way flight from Green Bay Austin-Straubel to Denver Intl
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($59 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 23, 2026.
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

Tue 5/12

7:00 am-1:59 pm

1 stop7h 59m

Denver Intl

Tue 5/19

6:00 am-11:13 am

1 stop4h 13m

$251

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Tue 4/14

12:00 pm-3:36 pm

1 stop4h 36m

Denver Intl

Wed 4/15

6:30 am-11:18 am

1 stop3h 48m

$251

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Wed 5/6

12:00 pm-3:36 pm

1 stop4h 36m

Denver Intl

Sun 5/10

6:00 am-11:09 am

1 stop4h 09m

$265

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Tue 4/7

6:00 am-10:32 am

1 stop5h 32m

Denver Intl

Mon 4/13

6:30 am-11:18 am

1 stop3h 48m

$265

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Thu 4/23

8:25 pm-12:58 am

1 stop5h 33m

Denver Intl

Mon 4/27

5:44 pm-11:57 pm

1 stop5h 13m

$279

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Fri 4/17

10:40 am-4:00 pm

1 stop6h 20m

Denver Intl

Mon 4/20

5:44 pm-11:57 pm

1 stop5h 13m

$279

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Tue 6/30

5:25 pm-9:38 pm

1 stop5h 13m

Denver Intl

Wed 7/8

6:10 am-11:09 am

1 stop3h 59m

$279

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 5/9

7:30 am-4:18 pm

2 stops9h 48m

Denver Intl

Sat 5/16

2:39 pm-11:35 pm

2 stops7h 56m

$335

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Tue 3/24

5:00 am-1:10 pm

2 stops9h 10m

Denver Intl

Mon 3/30

7:00 am-6:01 pm

2 stops10h 01m

$349

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Wed 3/4

6:32 pm-10:37 pm

1 stop5h 05m

Denver Intl

Tue 3/10

5:58 pm-11:32 pm

1 stop4h 34m

$354

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/22

Showing 1-10 of 23 results
1
2
3

Compare providers for flights from Green Bay to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Green Bay to Denver in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Green Bay-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Green Bay-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Green Bay-Denver flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Green Bay-Denver flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Green Bay-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 February 20, 2026.

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, July is the cheapest month in which you can book a flight from Green Bay to Denver (average of $83). Flying from Green Bay to Denver in February is currently the most expensive (average of $249). 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 February 23, 2026.

It’s optimal to fly from Green Bay to Denver at noon. By choosing this option you can save up to 62% on the cost of your flight, compared to a flight in the morning.

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 February 23, 2026.
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
7.9
Good
8,236 reviews

Overall

7.9

Comfort

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

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
8,236 reviews
Delta
7.9
Good
8,236 reviews

Overall

7.9

Comfort

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

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
9,342 reviews
Delta
7.9
Good
8,236 reviews

Overall

7.9

Comfort

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

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
11,339 reviews
Delta
7.9
Good
8,236 reviews

Overall

7.9

Comfort

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

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
5.7
Fair
3,044 reviews
Delta
7.9
Good
8,236 reviews

Overall

7.9

Comfort

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

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 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 5h 33m. There are 903 mi between Green Bay and Denver. This flight may include one or multiple stops.

  • 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 $87. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $179 and $204, respectively. Frontier is priced at 70% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Green Bay to Denver one-way?

    $78 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on American Airlines and Delta, with prices starting from $99 and $125, respectively.

  • 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, July is the cheapest month in which you can book a flight from Green Bay to Denver (average of $83). Flying from Green Bay to Denver in February is currently the most expensive (average of $249). 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
Thornton
Black Hawk
Lakewood
Broomfield
Westminster
Golden
Centennial
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Cripple Creek
Winter Park
Central City
Glendale
Manitou Springs
Frisco
Fort Morgan
Brighton
Evergreen

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.
O'Hare Intl to Denver flights
Minneapolis to Denver flights
Madison to Denver flights
Milwaukee to Denver flights
Appleton to Denver flights
O'Hare Intl to Colorado Springs flights
O'Hare Intl to Aspen flights
O'Hare Intl to Vail flights
O'Hare Intl to Montrose flights
O'Hare Intl to Hayden flights
Minneapolis to Grand Junction flights
Minneapolis to Colorado Springs flights
O'Hare Intl to Durango flights
Duluth to Denver flights
Minneapolis to Aspen flights
Minneapolis to Vail flights
Milwaukee to Colorado Springs flights
O'Hare Intl to Grand Junction flights
Minneapolis to Montrose flights
Minneapolis to Hayden flights
Minneapolis to Durango flights
La Crosse to Denver flights
Wausau to Denver flights
Madison to Montrose flights
Madison to Durango flights
Appleton to Colorado Springs flights
Madison to Grand Junction flights
O'Hare Intl to Gunnison flights
Milwaukee to Durango flights
Minneapolis to Gunnison flights
Madison to Colorado Springs flights
Milwaukee to Gunnison flights
Milwaukee to Grand Junction flights
Milwaukee to Montrose flights
Milwaukee to Vail flights
Eau Claire to Denver flights
Rhinelander to Denver flights
Milwaukee to Hayden flights
Appleton to Durango flights
Green Bay to Colorado Springs flights
Madison to Aspen flights
Appleton to Aspen flights
Escanaba to Denver flights
Appleton to Grand Junction flights
Milwaukee to Aspen flights
Wausau to Colorado Springs flights
Green Bay to Aspen flights
Rhinelander to Grand Junction flights
Dubuque to Denver 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 February 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$87Average$196FlexibilityNo cancel feeOn-time62%
DeltaCheapest$179Average$312FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$204Average$336FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$219Average$359FlexibilityNo 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.
Site
©2026 Cheapflights