$85 Cheap Flights from Green Bay (GRB) to Denver (DEN)

View $85 flight on Mon, Jul 21, 2025Opens in a new window

Popular airlines from Green Bay Austin Straubel Intl. Airport (GRB) to Denver Intl. Airport (DEN)

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Cheap Flights from Green Bay to Denver (GRB-DEN)

Prices were available within the past 7 days and start at $85 for one-way flights and $159 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Fri, Aug 1 - Mon, Aug 4
GRB
Green Bay
DEN
Denver
$159 Roundtrip, found 5 hours ago
$159
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Fri, Aug 1 from Green Bay to Denver, returning Mon, Aug 4, priced at $159 found 5 hours ago
Frontier Airlines
Fri, Jul 25 - Mon, Jul 28
GRB
Green Bay
DEN
Denver
$164 Roundtrip, just found
$164
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Jul 25 from Green Bay to Denver, returning Mon, Jul 28, priced at $164 just found
Frontier Airlines
Mon, Jul 21 - Fri, Jul 25
GRB
Green Bay
DEN
Denver
$170 Roundtrip, found 2 hours ago
$170
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Mon, Jul 21 from Green Bay to Denver, returning Fri, Jul 25, priced at $170 found 2 hours ago
Frontier Airlines
Fri, Aug 1 - Mon, Aug 4
GRB
Green Bay
DEN
Denver
$178 Roundtrip, found 5 hours ago
$178
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Fri, Aug 1 from Green Bay to Denver, returning Mon, Aug 4, priced at $178 found 5 hours ago
Frontier Airlines
Mon, Jul 21 - Mon, Jul 28
GRB
Green Bay
DEN
Denver
$184 Roundtrip, found 4 days ago
$184
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Mon, Jul 21 from Green Bay to Denver, returning Mon, Jul 28, priced at $184 found 4 days ago
Frontier Airlines
Fri, Aug 1 - Mon, Aug 11
GRB
Green Bay
DEN
Denver
$188 Roundtrip, found 1 day ago
$188
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, Aug 1 from Green Bay to Denver, returning Mon, Aug 11, priced at $188 found 1 day ago
Frontier Airlines
Fri, Jul 25 - Mon, Jul 28
GRB
Green Bay
DEN
Denver
$198 Roundtrip, just found
$198
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Jul 25 from Green Bay to Denver, returning Mon, Jul 28, priced at $198 just found
American Airlines
Fri, Jul 18 - Mon, Aug 4
GRB
Green Bay
DEN
Denver
$215 Roundtrip, found 3 days ago
$215
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Jul 18 from Green Bay to Denver, returning Mon, Aug 4, priced at $215 found 3 days ago
United
Sat, Aug 30 - Wed, Sep 3
GRB
Green Bay
DEN
Denver
$227 Roundtrip, found 1 day ago
$227
Roundtrip
found 1 day ago
Select United flight, departing Sat, Aug 30 from Green Bay to Denver, returning Wed, Sep 3, priced at $227 found 1 day ago
Delta
Wed, Nov 19 - Thu, Nov 27
GRB
Green Bay
DEN
Denver
$234 Roundtrip, found 8 hours ago
$234
Roundtrip
found 8 hours ago
Select Delta flight, departing Wed, Nov 19 from Green Bay to Denver, returning Thu, Nov 27, priced at $234 found 8 hours ago

Find the cheapest month to fly from Green Bay (GRB) to Denver (DEN)

July is typically the cheapest month to fly

From $158 - $581 per traveler.

Graph displaying average flight prices per month

Flights from Green Bay (GRB) to Denver (DEN)
Origin airport
Austin Straubel Intl.
Destination airport
Denver Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, United
Roundtrip price
$159
Distance
903 mi
Average flight time
2 hours 47 mins

Green Bay to Denver Flights

The cheapest times to fly from Green Bay to Denver

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Green Bay to Denver are during the month of August. You can find some of the cheapest flights from Green Bay to Denver with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Green Bay to Denver

Sunday is one of the best days to book for cheap flights from Green Bay to Denver: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Green Bay to Denver

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Green Bay to Denver in 2025. You can also book with separate airlines for your outbound and return journeys, from $85 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Green Bay to Denver flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Green Bay to Denver airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Austin Straubel Intl. Airport (GRB) to Denver Intl. Airport (DEN) cost?
Cheap return fares from Austin Straubel Intl. Airport (GRB) to Denver Intl. Airport (DEN) start from $159. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Frontier Airlines flight leaving GRB on July 25 2025 and touching down at DEN. The price was last updated on July 14 2025 and has not changed since.
What is the cheapest month to fly from GRB to DEN?
The cheapest flights from GRB to DEN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Austin Straubel Intl. Airport (GRB) to Denver Intl. Airport (DEN)?
You can't fly direct from Green Bay, WI (GRB-Austin Straubel Intl.) to Denver Intl. Airport (DEN). However, you can easily journey to Denver without any layovers by leaving from Appleton Intl. Airport (ATW).
What is the cheapest airline that flies from GRB to DEN?
With fares starting at $85 for a one-way journey from GRB to DEN, Frontier Airlines is currently the cheapest airline operating this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from GRB on August 18 2025. Prices were last updated on July 14 2025 and have not changed since.
How many flights per day from Austin Straubel Intl. Airport (GRB) to Denver Intl. Airport (DEN)?
There aren't any daily nonstop flights departing from Austin Straubel Intl. Airport (GRB) to Denver Intl. Airport (DEN). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from GRB to DEN?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Austin Straubel Intl. Airport (GRB) to Denver Intl. Airport (DEN)?
To touch down at Denver Intl. Airport (DEN) on time, select a flight that takes off from Austin Straubel Intl. Airport (GRB) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Austin Straubel Intl. Airport (GRB) to Denver Intl. Airport (DEN) last-minute?
Booking your flight from GRB to DEN shortly before your trip is generally more expensive. However, if you're flexible with your departure dates and times, you could grab a cheap last-minute fare.
Is it cheaper to book a GRB to DEN flight and hotel package?
Compared with arranging flights and hotels separately, booking a GRB to DEN flight and hotel package with Expedia could lead to significant savings. Better still, having it all in one place takes the hassle out of travel planning. Simply pick your flights and select from our wide range of hotels, then tailor your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Austin Straubel Intl. Airport (GRB) to Denver Intl. Airport (DEN)?
It's generally possible to reschedule or cancel your GRB to DEN flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.