$200+ Cheap flights from Green Bay (GRB) to Colorado
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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — DEN
Aug 28 — Sep 41
Round-trip
1 adult, Economy
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Find cheap flights from Green Bay to Colorado 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
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Cheapest flights from Green Bay to ColoradoExplore the most affordable flight options available from Green Bay to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2026.
Explore the most affordable flight options available from Green Bay to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2026.
This United Airlines deal was found by Cheapflights users on 7/25. 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 9/512:30 pm
GRB
- DEN
1 stop5h 04m
United Airlines
Fri 9/114:40 pm
DEN
- GRB
1 stop5h 39m
United Airlines
Deal found 7/25![United Airlines logo]()
$271
This American Airlines deal was found by Cheapflights users on 7/25. 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 9/512:26 pm
GRB
- DEN
2 stops8h 12m
American Airlines
Fri 9/116:01 pm
DEN
- GRB
1 stop5h 12m
American Airlines
Deal found 7/25![American Airlines logo]()
$276
This Delta deal was found by Cheapflights users on 7/26. 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 9/124:16 pm
GRB
- DEN
1 stop4h 49m
Delta
Tue 9/158:45 am
DEN
- GRB
1 stop5h 51m
Delta
Deal found 7/26![Delta logo]()
$283
This American Airlines deal was found by Cheapflights users on 7/28. 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 8/277:02 pm
GRB
- DEN
1 stop5h 57m
American Airlines
Wed 9/912:25 pm
DEN
- GRB
1 stop6h 31m
American Airlines
Deal found 7/28![American Airlines logo]()
$300
This Delta deal was found by Cheapflights users on 7/28. 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.
Mon 9/144:16 pm
GRB
- DEN
1 stop4h 49m
Delta
Sat 9/196:15 am
DEN
- GRB
1 stop4h 07m
Delta
Deal found 7/28![Delta logo]()
$313
This American Airlines deal was found by Cheapflights users on 7/26. 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 10/248:15 pm
GRB
- DEN
1 stop5h 11m
American Airlines
Wed 10/286:19 pm
DEN
- GRB
1 stop4h 53m
American Airlines
Deal found 7/26![American Airlines logo]()
$314
This American Airlines deal was found by Cheapflights users on 7/25. 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 9/225:43 am
GRB
- DEN
2 stops12h 59m
American Airlines
Tue 9/2912:17 pm
DEN
- GRB
2 stops10h 56m
American Airlines
Deal found 7/25![American Airlines logo]()
$324
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 8/266:25 am
GRB
- COS
1 stop5h 08m
United Airlines
Sat 8/2911:55 am
COS
- GRB
1 stop6h 26m
United Airlines
Deal found 7/27![United Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Wed 8/2611:45 am
GRB
- DRO
2 stops11h 15m
United Airlines
Sat 8/2910:25 am
DRO
- GRB
2 stops11h 54m
United Airlines
Deal found 7/24![United Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 7/26. 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 8/115:24 am
GRB
- COS
1 stop7h 51m
Delta
Sat 8/151:20 pm
COS
- GRB
1 stop7h 46m
Delta
Deal found 7/26![Delta logo]()
$434
This American Airlines deal was found by Cheapflights users on 7/26. 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 8/113:20 pm
GRB
- COS
2 stops8h 33m
American Airlines
Sat 8/1512:36 pm
COS
- GRB
1 stop4h 49m
American Airlines
Deal found 7/26![American Airlines logo]()
$450
This deal was found by Cheapflights users on 7/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:25 am
GRB
- COS
1 stop5h 22m
United Airlines
Sat 9/1211:55 am
COS
- GRB
1 stop6h 56m
United Airlines
Deal found 7/25![United Airlines logo]()
$483
Best flights from Green Bay to ColoradoDiscover carefully curated flight deals from Green Bay to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2026.
Discover carefully curated flight deals from Green Bay to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2026.
This Delta deal was found by Cheapflights users on 7/25. 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 9/54:25 pm
GRB
- DEN
1 stop4h 26m
Delta
Thu 9/106:15 am
DEN
- GRB
1 stop4h 07m
Delta
Deal found 7/25![Delta logo]()
$313
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Wed 9/165:05 pm
GRB
- DEN
1 stop6h 08m
United Airlines
Sun 9/206:00 am
DEN
- GRB
1 stop5h 05m
United Airlines
Deal found 7/28![United Airlines logo]()
$322
This American Airlines deal was found by Cheapflights users on 7/26. 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 8/113:20 pm
GRB
- COS
2 stops8h 33m
American Airlines
Sat 8/1512:36 pm
COS
- GRB
1 stop4h 49m
American Airlines
Deal found 7/26![American Airlines logo]()
$450
This Delta deal was found by Cheapflights users on 7/26. 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.
Mon 9/144:16 pm
GRB
- DEN
1 stop4h 49m
Delta
Sat 9/198:45 am
DEN
- GRB
1 stop5h 51m
Delta
Deal found 7/26![Delta logo]()
$313
This United Airlines deal was found by Cheapflights users on 7/27. 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 8/298:55 am
GRB
- DEN
1 stop7h 22m
United Airlines
Tue 9/17:45 am
DEN
- GRB
1 stop5h 10m
United Airlines
Deal found 7/27![United Airlines logo]()
$351
This Delta deal was found by Cheapflights users on 7/25. 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 8/284:13 pm
GRB
- DEN
1 stop4h 38m
Delta
Mon 8/316:00 am
DEN
- GRB
1 stop4h 22m
Delta
Deal found 7/25![Delta logo]()
$343
This United Airlines deal was found by Cheapflights users on 7/26. 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.
Wed 8/266:25 am
GRB
- COS
1 stop5h 08m
United Airlines
Sat 8/2911:55 am
COS
- GRB
1 stop6h 26m
United Airlines
Deal found 7/26![United Airlines logo]()
$409
This Delta deal was found by Cheapflights users on 7/26. 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 10/2312:29 pm
GRB
- DEN
2 stops11h 11m
Delta
Tue 10/276:00 am
DEN
- GRB
1 stop4h 37m
Delta
Deal found 7/26![Delta logo]()
$384
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Wed 8/2611:45 am
GRB
- DRO
2 stops11h 15m
United Airlines
Sat 8/2910:25 am
DRO
- GRB
2 stops11h 54m
United Airlines
Deal found 7/24![United Airlines logo]()
$419
This Delta deal was found by Cheapflights users on 7/26. 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 9/124:16 pm
GRB
- DEN
1 stop4h 49m
Delta
Mon 9/146:52 pm
DEN
- GRB
2 stops15h 30m
Delta
Deal found 7/26![Delta logo]()
$387
This Delta deal was found by Cheapflights users on 7/26. 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 9/1112:02 pm
GRB
- DEN
1 stop12h 33m
Delta
Sun 9/136:15 am
DEN
- GRB
1 stop4h 07m
Delta
Deal found 7/26![Delta logo]()
$391
This United Airlines deal was found by Cheapflights users on 7/25. 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 10/316:15 am
GRB
- GJT
2 stops7h 30m
United Airlines
Wed 11/45:30 am
GJT
- GRB
2 stops8h 01m
United Airlines
Deal found 7/25![United Airlines logo]()
$490
This Delta deal was found by Cheapflights users on 7/28. 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 10/26:15 am
GRB
- DEN
1 stop6h 53m
Delta
Sun 10/46:15 am
DEN
- GRB
1 stop4h 07m
Delta
Deal found 7/28![Delta logo]()
$410
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Tue 11/1710:37 am
GRB
- ASE
2 stops10h 56m
United Airlines
Wed 11/188:45 am
ASE
- GRB
2 stops11h 44m
United Airlines
Deal found 7/27![United Airlines logo]()
$499
This Delta deal was found by Cheapflights users on 7/24. 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 8/1512:03 pm
GRB
- DEN
1 stop4h 20m
Delta
Wed 8/196:00 am
DEN
- GRB
1 stop4h 22m
Delta
Deal found 7/24![Delta logo]()
$421
This Delta deal was found by Cheapflights users on 7/26. 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 8/115:24 am
GRB
- COS
1 stop7h 51m
Delta
Sat 8/151:20 pm
COS
- GRB
1 stop7h 46m
Delta
Deal found 7/26![Delta logo]()
$434
This American Airlines deal was found by Cheapflights users on 7/27. 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 8/115:55 am
GRB
- ASE
1 stop8h 29m
American Airlines
Sat 8/151:54 pm
ASE
- GRB
1 stop9h 22m
American Airlines
Deal found 7/27![American Airlines logo]()
$930
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Tue 8/1112:30 pm
GRB
- ASE
2 stops8h 46m
United Airlines
Sat 8/158:05 am
ASE
- GRB
2 stops24h 54m
United Airlines
Deal found 7/27![United Airlines logo]()
$892
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Sun 8/910:37 am
GRB
- ASE
1 stop12h 23m
United Airlines
Sat 8/158:05 am
ASE
- GRB
2 stops24h 54m
United Airlines
Deal found 7/24![United Airlines logo]()
$996
Last-minute flights from Green Bay to ColoradoDiscover last-minute flight deals from Green Bay to Colorado. Data last updated July 29, 2026 and is based on user searches.
Discover last-minute flight deals from Green Bay to Colorado. Data last updated July 29, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 7/27. 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 8/111:16 am
GRB
- DEN
2 stops10h 49m
American Airlines
Sat 8/86:56 am
DEN
- GRB
1 stop7h 15m
American Airlines
Deal found 7/27![American Airlines logo]()
$362
This American Airlines deal was found by Cheapflights users on 7/27. 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 8/117:02 pm
GRB
- DEN
1 stop5h 57m
American Airlines
Fri 8/215:44 pm
DEN
- GRB
1 stop5h 32m
American Airlines
Deal found 7/27![American Airlines logo]()
$343
This Delta deal was found by Cheapflights users on 7/26. 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 8/115:24 am
GRB
- COS
1 stop7h 51m
Delta
Sat 8/151:20 pm
COS
- GRB
1 stop7h 46m
Delta
Deal found 7/26![Delta logo]()
$434
This American Airlines deal was found by Cheapflights users on 7/26. 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 8/113:20 pm
GRB
- COS
2 stops8h 33m
American Airlines
Sat 8/1512:36 pm
COS
- GRB
1 stop4h 49m
American Airlines
Deal found 7/26![American Airlines logo]()
$450
This American Airlines deal was found by Cheapflights users on 7/27. 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 8/1312:26 pm
GRB
- DEN
2 stops10h 16m
American Airlines
Tue 8/185:44 pm
DEN
- GRB
1 stop5h 32m
American Airlines
Deal found 7/27![American Airlines logo]()
$359
This Delta deal was found by Cheapflights users on 7/24. 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 8/144:13 pm
GRB
- DEN
1 stop4h 38m
Delta
Tue 8/186:00 am
DEN
- GRB
1 stop4h 22m
Delta
Deal found 7/24![Delta logo]()
$353
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Thu 8/205:29 pm
GRB
- DEN
1 stop7h 24m
United Airlines
Tue 8/256:00 am
DEN
- GRB
1 stop4h 55m
United Airlines
Deal found 7/28![United Airlines logo]()
$329
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 8/266:25 am
GRB
- COS
1 stop5h 08m
United Airlines
Sat 8/2911:55 am
COS
- GRB
1 stop6h 26m
United Airlines
Deal found 7/27![United Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Wed 8/2611:45 am
GRB
- DRO
2 stops11h 15m
United Airlines
Sat 8/2910:25 am
DRO
- GRB
2 stops11h 54m
United Airlines
Deal found 7/24![United Airlines logo]()
$419
This American Airlines deal was found by Cheapflights users on 7/28. 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 8/277:02 pm
GRB
- DEN
1 stop5h 57m
American Airlines
Wed 9/912:25 pm
DEN
- GRB
1 stop6h 31m
American Airlines
Deal found 7/28![American Airlines logo]()
$300
This American Airlines deal was found by Cheapflights users on 7/27. 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 8/275:55 am
GRB
- DEN
2 stops10h 34m
American Airlines
Sun 8/306:56 am
DEN
- GRB
1 stop6h 45m
American Airlines
Deal found 7/27![American Airlines logo]()
$334
This United Airlines deal was found by Cheapflights users on 7/27. 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 8/298:55 am
GRB
- DEN
1 stop7h 22m
United Airlines
Tue 9/17:45 am
DEN
- GRB
1 stop5h 10m
United Airlines
Deal found 7/27![United Airlines logo]()
$351
One-way flights from Green Bay to ColoradoSearch for one-way flight options from Green Bay to Colorado. Find affordable one-way fares based on user searches. Data last updated July 29, 2026.
Search for one-way flight options from Green Bay to Colorado. Find affordable one-way fares based on user searches. Data last updated July 29, 2026.
This United Airlines deal was found by Cheapflights users on 7/24. 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 9/113:42 pm
GRB
- DEN
1 stop7h 31m
United Airlines
Deal found 7/24![United Airlines logo]()
$200
This Delta deal was found by Cheapflights users on 7/28. 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.
Mon 9/145:30 am
GRB
- COS
1 stop7h 44m
Delta
Deal found 7/28![Delta logo]()
$208
This United Airlines deal was found by Cheapflights users on 7/28. 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 9/145:05 pm
GRB
- COS
2 stops7h 50m
United Airlines
Deal found 7/28![United Airlines logo]()
$213
This American Airlines deal was found by Cheapflights users on 7/24. 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.
Sun 9/134:04 pm
GRB
- DEN
1 stop18h 58m
American Airlines
Deal found 7/24![American Airlines logo]()
$275
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Tue 9/112:30 pm
GRB
- DEN
1 stop5h 04m
United Airlines
Deal found 7/27![United Airlines logo]()
$294
This American Airlines deal was found by Cheapflights users on 7/26. 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 9/15:55 am
GRB
- DEN
2 stops10h 34m
American Airlines
Deal found 7/26![American Airlines logo]()
$299
This American Airlines deal was found by Cheapflights users on 7/27. 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.
Sun 8/163:20 pm
GRB
- DEN
1 stop18h 05m
American Airlines
Deal found 7/27![American Airlines logo]()
$310
This United Airlines deal was found by Cheapflights users on 7/27. 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 8/106:52 pm
GRB
- DEN
1 stop5h 57m
United Airlines
Deal found 7/27![United Airlines logo]()
$340
This American Airlines deal was found by Cheapflights users on 7/27. 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 8/115:55 am
GRB
- DEN
2 stops12h 42m
American Airlines
Deal found 7/27![American Airlines logo]()
$345
This Delta deal was found by Cheapflights users on 7/25. 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.
Sun 8/96:15 am
GRB
- DEN
1 stop4h 44m
Delta
Deal found 7/25![Delta logo]()
$355
This United Airlines deal was found by Cheapflights users on 7/28. 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.
Thu 9/246:20 am
GRB
- DEN
2 stops14h 54m
United Airlines
Deal found 7/28![United Airlines logo]()
$384
This Delta deal was found by Cheapflights users on 7/27. 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 8/135:24 am
GRB
- DEN
1 stop8h 53m
Delta
Deal found 7/27![Delta logo]()
$399
Find flight deals from Green Bay to Colorado
Keep the following information in mind while searching for Green Bay to Colorado flight deals. Data was last updated July 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $271 (United Airlines) |
One-way from | $200 (United Airlines) |
Popular in | June |
Cheapest in | August |
Average price | $431 |
Cheapflights Fare Finder
Customize your flight search to find flights from Green Bay to Colorado 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 July 29, 2026.
Use the filters below to find and compare flights from Green Bay to Colorado that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
Green BayDenver
GRB - DEN
GRBDEN
Green Bay Austin-Straubel
Sat 9/5
4:25 pm-7:51 pm
1 stop4h 26m
Denver Intl
Thu 9/10
6:15 am-11:22 am
1 stop4h 07m
$313
Green BayDenver
GRB - DEN
GRBDEN
Green Bay Austin-Straubel
Mon 9/14
4:16 pm-8:05 pm
1 stop4h 49m
Denver Intl
Sat 9/19
8:45 am-3:36 pm
1 stop5h 51m
$313
Green BayDenver
GRB - DEN
GRBDEN
Green Bay Austin-Straubel
Wed 9/16
5:05 pm-10:13 pm
1 stop6h 08m
Denver Intl
Sun 9/20
6:00 am-12:05 pm
1 stop5h 05m
$322
Green BayDenver
GRB - DEN
GRBDEN
Green Bay Austin-Straubel
Fri 8/28
4:13 pm-7:51 pm
1 stop4h 38m
Denver Intl
Mon 8/31
6:00 am-11:22 am
1 stop4h 22m
$343
Green BayDenver
GRB - DEN
GRBDEN
Green Bay Austin-Straubel
Sat 8/29
8:55 am-3:17 pm
1 stop7h 22m
Denver Intl
Tue 9/1
7:45 am-1:55 pm
1 stop5h 10m
$351
Green BayDenver
GRB - DEN
GRBDEN
Green Bay Austin-Straubel
Fri 10/23
12:29 pm-10:40 pm
2 stops11h 11m
Denver Intl
Tue 10/27
6:00 am-11:37 am
1 stop4h 37m
$384
Green BayDenver
GRB - DEN
GRBDEN
Green Bay Austin-Straubel
Sat 9/12
4:16 pm-8:05 pm
1 stop4h 49m
Denver Intl
Mon 9/14
6:52 pm-11:22 am
2 stops15h 30m
$387
Green BayDenver
GRB - DEN
GRBDEN
Green Bay Austin-Straubel
Fri 9/11
12:02 pm-11:35 pm
1 stop12h 33m
Denver Intl
Sun 9/13
6:15 am-11:22 am
1 stop4h 07m
$391
Green BayColorado Springs
GRB - COS
GRBCOS
Green Bay Austin-Straubel
Wed 8/26
6:25 am-10:33 am
1 stop5h 08m
Colorado Springs
Sat 8/29
11:55 am-7:21 pm
1 stop6h 26m
$409
Green BayDenver
GRB - DEN
GRBDEN
Green Bay Austin-Straubel
Fri 10/2
6:15 am-12:08 pm
1 stop6h 53m
Denver Intl
Sun 10/4
6:15 am-11:22 am
1 stop4h 07m
$410
Showing 1-10 of 33 resultsSorted by cheapest first
Best time to book a flight from Green Bay to Colorado
Have a flexible travel schedule? Discover the best time to fly to Colorado from Green Bay with our price prediction graph.
GRB-DEN
GRB-COS
GRB-DRO
GRB-GJT
GRB-ASE
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 Colorado
GRB-USCO
GRB-DEN
GRB-COS
GRB-DRO
GRB-GJT
What is the cheapest month to book a flight from Green Bay to Colorado?
Currently, August is the cheapest month in which you can book a flight from Green Bay to Colorado (average of $299). Flying from Green Bay to Colorado in June is currently the most expensive (average of $453). 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.
How much does it cost to fly round-trip from Green Bay to Colorado?
Airfare is typical for this route at the moment.
Green Bay to Colorado flights typically cost between $210 and $344 in September.The cheapest round-trip price found within the last 5 days was $271 on United Airlines (Sep 5-Sep 11).
Reviews of airlines servicing Colorado
Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated July 29, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican Airlines from Green Bay to Colorado by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Food
7.2
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Green Bay to Colorado. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Green Bay to Colorado
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Complete your trip
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Green Bay and Colorado flights
Browse other Green Bay and Colorado flight options. Last updated on July 29, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Green Bay to Colorado flights
Consider these flights traveling from Green Bay to Colorado.
Top 3 airlines flying from Green Bay to Colorado
Discover the top 3 airlines that operate flights from Green Bay to Colorado. 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 July 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$250 | Average$359 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$254 | Average$313 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$269 | Average$412 | FlexibilityNo cancel fee | On-time71% |