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$251+ Cheap flights from Green Bay to Denver (GRB - DEN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — DEN
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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1. Tell us where you want to go

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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 December 12, 2025.

This American Airlines deal was found by Cheapflights users on 12/10. 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 12/255:25 amGRB - DEN
1 stop5h 43mAmerican Airlines
Mon 12/295:44 pmDEN - GRB
1 stop4h 52mAmerican Airlines
Deal found 12/10$334
This United Airlines deal was found by Cheapflights users on 12/10. 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.
Mon 12/2210:44 amGRB - DEN
1 stop6h 45mUnited Airlines
Wed 12/313:20 pmDEN - GRB
1 stop5h 16mUnited Airlines
Deal found 12/10$339
This Delta deal was found by Cheapflights users on 12/10. 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 12/186:20 amGRB - DEN
1 stop7h 33mDelta
Thu 12/253:02 pmDEN - GRB
1 stop6h 13mDelta
Deal found 12/10$354
This American Airlines deal was found by Cheapflights users on 12/10. 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.
Mon 12/225:18 pmGRB - DEN
1 stop6h 08mAmerican Airlines
Wed 12/318:07 amDEN - GRB
2 stops9h 25mAmerican Airlines
Deal found 12/10$385
This American Airlines deal was found by Cheapflights users on 12/10. 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 12/185:25 amGRB - DEN
2 stops13h 12mAmerican Airlines
Thu 12/256:44 amDEN - GRB
1 stop6h 49mAmerican Airlines
Deal found 12/10$399
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Fri 12/123:51 pmGRB - DEN
1 stop5h 13mUnited Airlines
Fri 12/197:45 amDEN - GRB
1 stop6h 22mUnited Airlines
Deal found 12/11$409
This Delta deal was found by Cheapflights users on 12/10. 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 12/1312:13 pmGRB - DEN
1 stop4h 43mDelta
Tue 12/165:45 amDEN - GRB
1 stop4h 48mDelta
Deal found 12/10$419
This American Airlines deal was found by Cheapflights users on 12/9. 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 12/112:59 pmGRB - DEN
2 stops9h 25mAmerican Airlines
Sun 12/147:26 amDEN - GRB
1 stop5h 59mAmerican Airlines
Deal found 12/9$424
This American Airlines deal was found by Cheapflights users on 12/10. 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 12/133:06 pmGRB - DEN
2 stops9h 13mAmerican Airlines
Tue 12/1610:21 amDEN - GRB
2 stops10h 37mAmerican Airlines
Deal found 12/10$429

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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$251
(United Airlines)

Popular in

March

Cheapest in

July

Average price

$341
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
Highest demand for flights based on searches. 19% potential increase in price ($76 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 12, 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

Wed 1/7

10:42 am-4:34 pm

1 stop6h 52m

Denver Intl

Wed 1/14

7:50 am-2:02 pm

1 stop5h 12m

$251

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Fri 2/20

6:39 pm-10:36 pm

1 stop4h 57m

Denver Intl

Tue 2/24

12:19 pm-8:27 pm

1 stop7h 08m

$255

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Wed 1/7

11:20 am-8:53 pm

2 stops10h 33m

Denver Intl

Wed 1/14

9:01 am-10:14 pm

2 stops12h 13m

$261

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Wed 1/7

11:20 am-10:34 pm

2 stops12h 14m

Denver Intl

Sat 1/10

7:39 am-10:12 pm

2 stops13h 33m

$316

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Wed 1/7

2:39 pm-9:59 pm

1 stop8h 20m

Denver Intl

Sat 1/10

9:40 am-4:47 pm

1 stop6h 07m

$321

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 1/10

2:39 pm-9:59 pm

1 stop8h 20m

Denver Intl

Tue 1/13

11:20 am-7:03 pm

1 stop6h 43m

$321

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Thu 12/25

5:25 am-10:08 am

1 stop5h 43m

Denver Intl

Mon 12/29

5:44 pm-11:36 pm

1 stop4h 52m

$334

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sun 12/28

5:22 pm-2:55 pm

2 stops22h 33m

$604

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sun 12/28

5:21 pm-10:26 pm

1 stop6h 05m

$610

Green BayDenver

GRB - DEN

GRBDEN

Green Bay Austin-Straubel

Sat 12/27

5:22 pm-10:19 am

2 stops17h 57m

$633

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 11 results
1
2

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Green Bay-Denver flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 December 5, 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, 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 March is currently the most expensive (average of $238). 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 December 12, 2025.

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.

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 December 12, 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
7.9
Good
8,007 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.3

Comfort

7.9

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
8,007 reviews
Delta
7.9
Good
8,007 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.3

Comfort

7.9

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
9,095 reviews
Delta
7.9
Good
8,007 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.3

Comfort

7.9

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
11,050 reviews
Delta
7.9
Good
8,007 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.3

Comfort

7.9

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
5.8
Fair
3,084 reviews
Delta
7.9
Good
8,007 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.1

Overall

7.9

Food

7.3

Comfort

7.9

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 4h 57m. 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 United Airlines, with the lowest prices starting at $216 and $219, respectively. Frontier is priced at 73% 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 $108, 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 March is currently the most expensive (average of $238). 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
Thornton
Westminster
Broomfield
Lakewood
Golden
Winter Park
Greeley
Lone Tree
Cripple Creek
Silverthorne
Central City
Frisco
Wheat Ridge
Manitou Springs
Fort Morgan
Brighton
Longmont
Idaho Springs
Parker

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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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$94Average$198FlexibilityNo cancel feeOn-time62%
DeltaCheapest$216Average$363FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$238Average$351FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$258Average$447FlexibilityNo cancel feeOn-time69%

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