$101 Find Cheap Flights from Green Bay to Colorado

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Green Bay to Colorado departing on 7/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Colorado

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Green Bay to Colorado, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Green Bay to Colorado, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Green Bay to Colorado

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Denver
Denver1 stop$201
Aspen
Aspen1 stop$449
Grand Junction
Grand Junction2 stops$390
Durango
Durango2 stops$482
Denver
Denver1 stop$201
Aspen
Aspen1 stop$449
Grand Junction
Grand Junction2 stops$390
Durango
Durango2 stops$482

Book Cheap Green Bay to Colorado Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Green Bay to Colorado that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Green Bay to Colorado

Tue, Jun 30 - Sat, Jul 4
American Airlines Logo
6:51 pm - 12:17 am
GRB
-
DEN
6h 26m
1 stop
American Airlines Logo
6:19 pm - 12:12 am
DEN
-
GRB
4h 53m
1 stop
$201American Airlines
Wed, Aug 19 - Sat, Aug 22
American Airlines Logo
6:55 pm - 11:59 pm
GRB
-
DEN
6h 04m
1 stop
American Airlines Logo
6:56 am - 3:11 pm
DEN
-
GRB
7h 15m
1 stop
$261American Airlines
Tue, Jun 30 - Sat, Jul 4
American Airlines Logo
6:51 pm - 12:17 am
GRB
-
DEN
6h 26m
1 stop
American Airlines Logo
10:25 am - 12:12 am
DEN
-
GRB
12h 47m
2 stops
$279American Airlines
Mon, Sep 14 - Sat, Sep 19
Delta Logo
4:16 pm - 7:51 pm
GRB
-
DEN
4h 35m
1 stop
Delta Logo
8:55 am - 3:36 pm
DEN
-
GRB
5h 41m
1 stop
$302Delta
Wed, Jul 1 - Wed, Jul 8
Delta Logo
6:15 am - 10:05 am
GRB
-
DEN
4h 50m
1 stop
Delta Logo
6:00 am - 11:20 am
DEN
-
GRB
4h 20m
1 stop
$304Delta
Thu, Nov 12 - Sun, Nov 15
Delta Logo
5:30 am - 12:58 pm
GRB
-
COS
8h 28m
1 stop
Delta Logo
1:40 pm - 10:45 pm
COS
-
GRB
8h 05m
1 stop
$344Delta
Thu, Nov 12 - Sun, Nov 15
Delta Logo
10:50 am - 9:21 pm
GRB
-
COS
11h 31m
2 stops
Delta Logo
1:40 pm - 10:45 pm
COS
-
GRB
8h 05m
1 stop
$349Delta
Tue, Jun 30 - Sat, Jul 4
United Airlines Logo
6:30 am - 11:09 am
GRB
-
COS
5h 39m
1 stop
United Airlines Logo
12:11 pm - 9:12 pm
COS
-
GRB
8h 01m
1 stop
$385United Airlines
Sat, Nov 14 - Wed, Nov 18
United Airlines Logo
2:30 pm - 9:40 pm
GRB
-
COS
8h 10m
1 stop
United Airlines Logo
12:16 pm - 9:04 pm
COS
-
GRB
7h 48m
1 stop
$399United Airlines
Sat, Nov 14 - Wed, Nov 18
United Airlines Logo
10:45 am - 8:08 pm
GRB
-
COS
10h 23m
2 stops
United Airlines Logo
12:16 pm - 9:04 pm
COS
-
GRB
7h 48m
1 stop
$404United Airlines
Booking Insights

KAYAK's insights & trends for Green Bay to Colorado flights

Get data-powered insights and trends into flights from Green Bay to Colorado to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Green Bay to Colorado?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Green Bay to Colorado departing in June.

What is the cheapest Green Bay to Colorado flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Colorado from Green Bay found in the last 5 days was to Denver, at $89 round-trip. The most popular route is from Green Bay (GRB) to Denver (DEN), and the cheapest round-trip airline ticket found on this route in the last 5 days was $89.

What is the cheapest time of day to fly to Colorado?

The average price for all round-trip flights from Green Bay to Colorado depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Colorado is generally at night, when round-trip flights cost $178 on average. The most expensive time of day to fly to Colorado is generally at night, which is peak travel time and where the average cost of a ticket is $178.

Can I save money by flying with a layover from Green Bay to Colorado?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $378, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Green Bay to Colorado?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Green Bay to Colorado, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Green Bay to Colorado is July, when tickets cost $80 (return) on average. On the other hand, the most expensive months are April and May, when the average cost of round-trip tickets is $296 and $270 respectively.

What’s the cheapest day of the week to fly from Green Bay to Colorado?

The average price of all round-trip flights from Green Bay to Colorado clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Green Bay to Colorado, look for departures on Tuesdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Colorado, Friday is the cheapest day to fly and Monday is the most expensive.

How far in advance should I book a flight from Green Bay to Colorado?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Green Bay to Colorado, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Green Bay to Colorado, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 1 week before departure.

Good to know

Low seasonFebruary
Cheapest flight$101
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from Green Bay to Denver

FAQs - booking Colorado flights

  • How does KAYAK find such low prices on flights from Green Bay to Colorado?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Green Bay to Colorado.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Green Bay to Colorado?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Green Bay to Colorado is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Green Bay to Colorado?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Green Bay to Colorado with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Green Bay to Colorado?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Green Bay to Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Green Bay to Colorado

 
See real verified KAYAK customer reviews for airlines flying from Green Bay to Colorado. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Green Bay to Colorado? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8408 reviews
8.1Boarding
7.8Entertainment
7.2Food
8.5Crew
7.8Comfort
Airline reviews

Horrible. Faucet in sink not working, wifi not working. Didn’t bring food or snacks

2.0 MediocreMargaret, Jun 2026
MSY - LGA
Read more Delta reviews

Horrible. Faucet in sink not working, wifi not working. Didn’t bring food or snacks

Flight was delayed before take off and at landing. Baggage took 20 minutes. Flight crew would not serve full soft drink and had to ask multiple times before receiving water.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Gate agent showed up 20 minutes before boarding and was not at all friendly. Had to take this flight due to the one on the day before being cancelled and any later options were already full with long standby lists. Despite having paid for Delta Comfort seats, Delta did not allow me (or anyone) to choose their seat. The agent assigned them for everyone just prior to boarding. Self seat selection was allowed on the original flight. Flight staff was great - very friendly.

Flight attendants were great. Cheerful, upbeat and friendly. Jet, in particular, was fantastic.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

It was a short flight so I was expecting too much

Late- that’s what United does best. Missed my connection, rebooked to a flight 17 hours later and had to spend $500 on a hotel. What did I get? A $15 meal voucher. What can you get in an airport for $15. I hate United so much.

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

weather delay of almost 2 hours then we landed and our gate wasn't available so we waited another 30 min

Flight had mechanical issues and it was delayed 30 mins - some of us boarded and then had to deplane.

technology worked well and everything ran smoothly. The seats are quite cramped so please don't try to re-engineer the cabin to squeeze more bodies on board.

Delayed flight more than I hour. When boarding we spent some additional time on the plane before takeoff ....

Flight was delayed due to connecting passengers. Lack of snack options bad. Sitting in Aisle, last cart run pulled the cart directly into my knee. Rude awakening.

We sat on plane at gate delayed without communication as to why we were just sitting there

Agency very bad had to cancelled my booking too many changes in the flight changed my flight to 1 week

Trash. Sat on the runway for 40 mins…missed connecting flight because of it now I’m stuck. Thanks…a whole fkn lot.

The flight was delayed significantly and we sat on runway after landing for awhile. Best thing was the flight attendant, Jenny, in first class, who was very professional and attentive. She was excellent - the rest of the flight was not.

Awfully rude American worker at door when we started boarding flight. Then, walk into a blazing hot airplane with no air conditioning until twenty minutes into the flight. Free entertainment was non existent! My husband, along with the fellow passenger in our row, and I could not get entertainment to work, no WIFI! Really?? Been flying American a long time. Was very disappointed.

There weren't enough employees at check in took awhile to get bags checked. There wasn't a wheel chair for me, I was sent to someone who turns out to work for a different airline, if My flight hadn't been delayed I probably would have missed my flight as it was, by the time I arrived at my gate, they started boarding in about 15 minutes. I don't know who took me to my gate, definitely was not the normal people who take passengers to the gate. I'm guessing she may have been in a management position. I wish I knew her name, she went beyond to help me. With that said everyone was kind, and were doing the best they could. So, I choose to say it was an Adventure, stressful start, but good. In the end went well. The situation was not only difficult for passengers but the employee's.

The staff at the check in counter was so rude. Made you feel Incompetent

Frontier scheduled a 40 minute connection in DEN. What they failed to mention was that they “close the doors” 20 mins prior to departure, which means you only have 20 mins. Not enough time. Possibly against DOT regulations. Filing complaint.

Flight was scheduled at 9:40pm. Got delayed to 10 am, the next day. crazy

The bag check, flight check-in, and onboard experience convinced my wife and me that we will actively go out of our way to avoid flying Frontier Airlines in the future. At bag check, we were informed that check-in could only be completed via the Frontier mobile app. Unfortunately, the app was extremely frustrating—sending us through repetitive, confusing loops that repeatedly forced us to decline add-on services with nearly every click. While most airline apps upsell, this one felt intentionally exhausting. As the process dragged on, we became genuinely concerned that my phone battery would die before check-in could be completed. We approached the bag check staff—who were standing together talking—and explained both our frustration and our predicament. They laughed. Later, my wife described the interaction as “gaslighting,” which felt accurate. We were then informed it would cost $25 per person simply to have our boarding passes printed. From that point forward, the tone of the experience was consistently hostile. The bag check employees were condescending and combative, behaving more like bullies than customer service staff. Unfortunately, that same attitude continued onboard. One flight attendant argued with me when I attempted to stow my backpack in the overhead bin. I explained that we had each paid $75 to check our bags specifically so we would not need to use carry-on space and could have adequate legroom. She demanded to see my ticket, pointed out that it said “no carry-on”—which I acknowledged—and I reiterated that this was precisely why we paid to check our bags. Her response was, “I don’t make the rules.” She then walked away, but not before asking if I “truly wanted to fly back to Chicago today?”—an unnecessary and unmistakable threat. It is also worth noting that despite booking our tickets together in the same transaction, we were not seated together. Upon our return to Chicago—where we could once again sit together—we compared onboard experiences. We both remarked on how unhappy the flight attendants appeared and how each of us was separately asked whether we would like to purchase a beverage. We declined. At no point was water mentioned as an option, leaving us with the clear impression that even water came at a cost—or that complimentary water, if available at all, was deliberately left unmentioned. Overall, the experience was shocking and deeply disappointing, but it was also a profound learning experience—one we will not forget and will not repeat. -Steve

Plane was hot and miserable and the crew was rude!

12 hour delay required getting on and off plane 3 times - would have at least liked to have been offered a snack or drink

They didn’t offer a water, even after I asked

It was an early flight and most people napped/slept and the crew let us which was nice.

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

Everything you need to know for your flight from Green Bay to Colorado

Information on your arrival and departure airports