$198+ 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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
GRB — DEN
Aug 18 — Aug 251
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 19, 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 19, 2026.
This United Airlines deal was found by Cheapflights users on 7/17. 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 7/17![United Airlines logo]()
$261
This American Airlines deal was found by Cheapflights users on 7/17. 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 9/57:02 pm
GRB
- DEN
1 stop5h 57m
American Airlines
Fri 9/116:01 pm
DEN
- GRB
1 stop5h 12m
American Airlines
Deal found 7/17![American Airlines logo]()
$262
This American Airlines deal was found by Cheapflights users on 7/19. 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 8/1912:26 pm
GRB
- DEN
2 stops10h 50m
American Airlines
Tue 8/2512:19 pm
DEN
- GRB
2 stops10h 57m
American Airlines
Deal found 7/19![American Airlines logo]()
$271
This Delta deal was found by Cheapflights users on 7/14. 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 10/2412:35 pm
GRB
- DEN
1 stop4h 14m
Delta
Fri 10/306:00 am
DEN
- GRB
1 stop4h 46m
Delta
Deal found 7/14![Delta logo]()
$273
This United Airlines deal was found by Cheapflights users on 7/17. 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 8/145:29 pm
GRB
- DEN
1 stop7h 24m
United Airlines
Sat 8/226:00 am
DEN
- GRB
1 stop4h 55m
United Airlines
Deal found 7/17![United Airlines logo]()
$290
This Delta deal was found by Cheapflights users on 7/17. 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 7/17![Delta logo]()
$302
This American Airlines deal was found by Cheapflights users on 7/15. 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.
Fri 8/147:02 pm
GRB
- DEN
1 stop5h 57m
American Airlines
Fri 8/216:56 am
DEN
- GRB
1 stop6h 45m
American Airlines
Deal found 7/15![American Airlines logo]()
$319
This American Airlines deal was found by Cheapflights users on 7/17. 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 8/2512:26 pm
GRB
- DRO
2 stops8h 32m
American Airlines
Sat 8/296:52 am
DRO
- GRB
2 stops10h 33m
American Airlines
Deal found 7/17![American Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 7/17. 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.
Wed 10/73:19 pm
GRB
- DEN
1 stop5h 22m
Delta
Tue 10/136:13 pm
DEN
- GRB
1 stop3h 50m
Delta
Deal found 7/17![Delta logo]()
$325
This American Airlines deal was found by Cheapflights users on 7/14. 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.
Fri 8/77:02 pm
GRB
- DEN
1 stop5h 57m
American Airlines
Sat 8/156:25 am
DEN
- GRB
2 stops11h 00m
American Airlines
Deal found 7/14![American Airlines logo]()
$338
This Delta deal was found by Cheapflights users on 7/17. 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 8/15:45 am
GRB
- COS
1 stop7h 47m
Delta
Wed 8/51:20 pm
COS
- GRB
1 stop7h 46m
Delta
Deal found 7/17![Delta logo]()
$369
This United Airlines deal was found by Cheapflights users on 7/18. 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 7/18![United Airlines logo]()
$399
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 19, 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 19, 2026.
This American Airlines deal was found by Cheapflights users on 7/19. 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 8/1912:26 pm
GRB
- DEN
1 stop5h 27m
American Airlines
Tue 8/255:44 pm
DEN
- GRB
1 stop5h 32m
American Airlines
Deal found 7/19![American Airlines logo]()
$261
This United Airlines deal was found by Cheapflights users on 7/17. 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 9/58:55 am
GRB
- DEN
1 stop6h 36m
United Airlines
Tue 9/84:40 pm
DEN
- GRB
1 stop5h 39m
United Airlines
Deal found 7/17![United Airlines logo]()
$261
This Delta deal was found by Cheapflights users on 7/17. 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.
Wed 10/73:19 pm
GRB
- DEN
1 stop5h 22m
Delta
Tue 10/136:13 pm
DEN
- GRB
1 stop3h 50m
Delta
Deal found 7/17![Delta logo]()
$325
This American Airlines deal was found by Cheapflights users on 7/14. 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.
Fri 8/77:02 pm
GRB
- DEN
1 stop5h 57m
American Airlines
Sat 8/156:25 am
DEN
- GRB
2 stops11h 00m
American Airlines
Deal found 7/14![American Airlines logo]()
$338
This United Airlines deal was found by Cheapflights users on 7/18. 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 7/18![United Airlines logo]()
$341
This Delta deal was found by Cheapflights users on 7/14. 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 10/2212:35 pm
GRB
- DEN
1 stop12h 00m
Delta
Fri 10/306:00 am
DEN
- GRB
1 stop4h 46m
Delta
Deal found 7/14![Delta logo]()
$352
This Delta deal was found by Cheapflights users on 7/17. 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 8/15:45 am
GRB
- COS
1 stop7h 47m
Delta
Wed 8/51:20 pm
COS
- GRB
1 stop7h 46m
Delta
Deal found 7/17![Delta logo]()
$369
This United Airlines deal was found by Cheapflights users on 7/18. 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 7/18![United Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 7/14. 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 10/236:00 am
GRB
- DEN
1 stop18h 35m
Delta
Fri 10/306:00 am
DEN
- GRB
1 stop4h 46m
Delta
Deal found 7/14![Delta logo]()
$395
This United Airlines deal was found by Cheapflights users on 7/17. 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 10/66:20 am
GRB
- COS
1 stop5h 35m
United Airlines
Tue 10/131:29 pm
COS
- GRB
2 stops8h 50m
United Airlines
Deal found 7/17![United Airlines logo]()
$404
This American Airlines deal was found by Cheapflights users on 7/14. 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 10/66:00 am
GRB
- COS
1 stop7h 56m
American Airlines
Tue 10/1312:46 pm
COS
- GRB
1 stop19h 36m
American Airlines
Deal found 7/14![American Airlines logo]()
$454
This Delta deal was found by Cheapflights users on 7/15. 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 8/65:24 am
GRB
- DEN
2 stops13h 51m
Delta
Tue 8/116:00 am
DEN
- GRB
1 stop4h 22m
Delta
Deal found 7/15![Delta logo]()
$424
This United Airlines deal was found by Cheapflights users on 7/15. 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 8/125:29 pm
GRB
- ASE
1 stop5h 24m
United Airlines
Wed 8/192:15 pm
ASE
- GRB
2 stops8h 04m
United Airlines
Deal found 7/15![United Airlines logo]()
$444
This Delta deal was found by Cheapflights users on 7/14. 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 10/236:00 am
GRB
- DEN
1 stop7h 04m
Delta
Sat 10/316:00 am
DEN
- GRB
1 stop4h 46m
Delta
Deal found 7/14![Delta logo]()
$425
This American Airlines deal was found by Cheapflights users on 7/14. 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
- ASE
1 stop6h 25m
American Airlines
Thu 9/177:00 am
ASE
- GRB
1 stop7h 34m
American Airlines
Deal found 7/14![American Airlines logo]()
$541
This Delta deal was found by Cheapflights users on 7/14. 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 10/246:00 am
GRB
- DEN
1 stop4h 57m
Delta
Wed 10/286:00 am
DEN
- GRB
1 stop4h 46m
Delta
Deal found 7/14![Delta logo]()
$425
This United Airlines deal was found by Cheapflights users on 7/18. 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 8/2612:30 pm
GRB
- DRO
2 stops10h 30m
United Airlines
Sat 8/291:34 pm
DRO
- GRB
2 stops8h 45m
United Airlines
Deal found 7/18![United Airlines logo]()
$472
This American Airlines deal was found by Cheapflights users on 7/15. 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 10/158:15 pm
GRB
- GJT
2 stops16h 16m
American Airlines
Mon 10/197:03 pm
GJT
- GRB
2 stops13h 19m
American Airlines
Deal found 7/15![American Airlines logo]()
$557
This United Airlines deal was found by Cheapflights users on 7/15. 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 9/126:25 am
GRB
- COS
1 stop5h 22m
United Airlines
Sat 9/1911:55 am
COS
- GRB
1 stop6h 56m
United Airlines
Deal found 7/15![United Airlines logo]()
$483
This United Airlines deal was found by Cheapflights users on 7/18. 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 10/316:25 am
GRB
- GJT
2 stops7h 10m
United Airlines
Wed 11/411:25 am
GJT
- GRB
2 stops9h 09m
United Airlines
Deal found 7/18![United Airlines logo]()
$503
This United Airlines deal was found by Cheapflights users on 7/14. 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 12/95:18 pm
GRB
- GJT
2 stops19h 57m
United Airlines
Sat 12/121:20 pm
GJT
- GRB
2 stops8h 29m
United Airlines
Deal found 7/14![United Airlines logo]()
$608
This American Airlines deal was found by Cheapflights users on 7/15. 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 10/159:58 am
GRB
- DRO
3 stops9h 50m
American Airlines
Mon 10/197:18 pm
DRO
- GRB
2 stops13h 04m
American Airlines
Deal found 7/15![American Airlines logo]()
$872
This United Airlines deal was found by Cheapflights users on 7/17. 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 8/2511:45 am
GRB
- DRO
2 stops10h 09m
United Airlines
Sat 8/297:00 am
DRO
- GRB
3 stops8h 54m
United Airlines
Deal found 7/17![United Airlines logo]()
$727
This United Airlines deal was found by Cheapflights users on 7/16. 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 7/316:52 pm
GRB
- DRO
2 stops18h 36m
United Airlines
Tue 8/47:00 am
DRO
- GRB
2 stops15h 19m
United Airlines
Deal found 7/16![United Airlines logo]()
$946
Last-minute flights from Green Bay to ColoradoDiscover last-minute flight deals from Green Bay to Colorado. Data last updated July 19, 2026 and is based on user searches.
Discover last-minute flight deals from Green Bay to Colorado. Data last updated July 19, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/17. 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 8/15:45 am
GRB
- COS
1 stop7h 47m
Delta
Wed 8/51:20 pm
COS
- GRB
1 stop7h 46m
Delta
Deal found 7/17![Delta logo]()
$369
This American Airlines deal was found by Cheapflights users on 7/14. 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.
Fri 8/77:02 pm
GRB
- DEN
1 stop5h 57m
American Airlines
Sat 8/156:25 am
DEN
- GRB
2 stops11h 00m
American Airlines
Deal found 7/14![American Airlines logo]()
$338
This United Airlines deal was found by Cheapflights users on 7/14. 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 8/86:52 pm
GRB
- DEN
1 stop5h 57m
United Airlines
Fri 8/144:40 pm
DEN
- GRB
1 stop5h 39m
United Airlines
Deal found 7/14![United Airlines logo]()
$345
This American Airlines deal was found by Cheapflights users on 7/16. 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 8/1112:26 pm
GRB
- COS
2 stops11h 27m
American Airlines
Thu 8/1312:37 pm
COS
- GRB
1 stop4h 48m
American Airlines
Deal found 7/16![American Airlines logo]()
$497
This United Airlines deal was found by Cheapflights users on 7/15. 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 8/125:29 pm
GRB
- ASE
1 stop5h 24m
United Airlines
Wed 8/192:15 pm
ASE
- GRB
2 stops8h 04m
United Airlines
Deal found 7/15![United Airlines logo]()
$444
This United Airlines deal was found by Cheapflights users on 7/17. 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 8/145:29 pm
GRB
- DEN
1 stop7h 24m
United Airlines
Sat 8/226:00 am
DEN
- GRB
1 stop4h 55m
United Airlines
Deal found 7/17![United Airlines logo]()
$290
This American Airlines deal was found by Cheapflights users on 7/15. 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.
Fri 8/147:02 pm
GRB
- DEN
1 stop5h 57m
American Airlines
Fri 8/216:56 am
DEN
- GRB
1 stop6h 45m
American Airlines
Deal found 7/15![American Airlines logo]()
$319
This American Airlines deal was found by Cheapflights users on 7/19. 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 8/1912:26 pm
GRB
- DEN
1 stop5h 27m
American Airlines
Tue 8/255:44 pm
DEN
- GRB
1 stop5h 32m
American Airlines
Deal found 7/19![American Airlines logo]()
$261
This American Airlines deal was found by Cheapflights users on 7/17. 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 8/2512:26 pm
GRB
- DRO
2 stops8h 32m
American Airlines
Sat 8/296:52 am
DRO
- GRB
2 stops10h 33m
American Airlines
Deal found 7/17![American Airlines logo]()
$319
This United Airlines deal was found by Cheapflights users on 7/18. 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 7/18![United Airlines logo]()
$399
This United Airlines deal was found by Cheapflights users on 7/18. 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 8/2612:30 pm
GRB
- DRO
2 stops10h 30m
United Airlines
Sat 8/291:34 pm
DRO
- GRB
2 stops8h 45m
United Airlines
Deal found 7/18![United Airlines logo]()
$472
This United Airlines deal was found by Cheapflights users on 7/14. 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 7/14![United Airlines logo]()
$341
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 19, 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 19, 2026.
This Delta deal was found by Cheapflights users on 7/15. 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.
Wed 11/2510:50 am
GRB
- COS
2 stops11h 31m
Delta
Deal found 7/15![Delta logo]()
$198
This American Airlines deal was found by Cheapflights users on 7/15. 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 11/226:00 am
GRB
- COS
1 stop7h 56m
American Airlines
Deal found 7/15![American Airlines logo]()
$203
This United Airlines deal was found by Cheapflights users on 7/15. 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 11/215:18 pm
GRB
- COS
2 stops7h 41m
United Airlines
Deal found 7/15![United Airlines logo]()
$208
This American Airlines deal was found by Cheapflights users on 7/19. 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.
Mon 9/144:04 pm
GRB
- COS
1 stop5h 36m
American Airlines
Deal found 7/19![American Airlines logo]()
$260
This American Airlines deal was found by Cheapflights users on 7/16. 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
- COS
2 stops11h 27m
American Airlines
Deal found 7/16![American Airlines logo]()
$265
This American Airlines deal was found by Cheapflights users on 7/14. 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.
Fri 8/213:20 pm
GRB
- DEN
1 stop18h 30m
American Airlines
Deal found 7/14![American Airlines logo]()
$266
This American Airlines deal was found by Cheapflights users on 7/15. 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.
Fri 11/206:00 am
GRB
- COS
1 stop7h 56m
American Airlines
Deal found 7/15![American Airlines logo]()
$280
This United Airlines deal was found by Cheapflights users on 7/18. 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 8/175:29 pm
GRB
- DEN
1 stop5h 15m
United Airlines
Deal found 7/18![United Airlines logo]()
$289
This American Airlines deal was found by Cheapflights users on 7/18. 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 10/186:00 am
GRB
- DEN
1 stop19h 26m
American Airlines
Deal found 7/18![American Airlines logo]()
$296
This United Airlines deal was found by Cheapflights users on 7/14. 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 8/46:52 pm
GRB
- DEN
1 stop5h 56m
United Airlines
Deal found 7/14![United Airlines logo]()
$301
This American Airlines deal was found by Cheapflights users on 7/16. 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 50m
American Airlines
Deal found 7/16![American Airlines logo]()
$306
This United Airlines deal was found by Cheapflights users on 7/15. 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 11/205:18 pm
GRB
- COS
2 stops7h 41m
United Airlines
Deal found 7/15![United Airlines logo]()
$332
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 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $261 (United Airlines) |
One-way from | $198 (Delta) |
Popular in | June |
Cheapest in | August |
Average price | $398 |
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 19, 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
Green BayDenver
GRB - DEN
GRBDEN
Green Bay Austin-Straubel
Wed 8/19
12:26 pm-4:53 pm
1 stop5h 27m
Denver Intl
Tue 8/25
5:44 pm-12:16 am
1 stop5h 32m
$261
Green BayDenver
GRB - DEN
GRBDEN
Green Bay Austin-Straubel
Sat 9/5
8:55 am-2:31 pm
1 stop6h 36m
Denver Intl
Tue 9/8
4:40 pm-11:19 pm
1 stop5h 39m
$261
Quickest round-trip
Green BayDenver
GRB - DEN
GRBDEN
Green Bay Austin-Straubel
Wed 10/7
3:19 pm-7:41 pm
1 stop5h 22m
Denver Intl
Tue 10/13
6:13 pm-11:03 pm
1 stop3h 50m
$325
Green BayDenver
GRB - DEN
GRBDEN
Green Bay Austin-Straubel
Fri 8/7
7:02 pm-11:59 pm
1 stop5h 57m
Denver Intl
Sat 8/15
6:25 am-6:25 pm
2 stops11h 00m
$338
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
$341
Green BayDenver
GRB - DEN
GRBDEN
Green Bay Austin-Straubel
Thu 10/22
12:35 pm-11:35 pm
1 stop12h 00m
Denver Intl
Fri 10/30
6:00 am-11:46 am
1 stop4h 46m
$352
Green BayColorado Springs
GRB - COS
GRBCOS
Green Bay Austin-Straubel
Sat 8/1
5:45 am-12:32 pm
1 stop7h 47m
Colorado Springs
Wed 8/5
1:20 pm-10:06 pm
1 stop7h 46m
$369
Green BayDenver
GRB - DEN
GRBDEN
Green Bay Austin-Straubel
Fri 10/23
6:00 am-11:35 pm
1 stop18h 35m
Denver Intl
Fri 10/30
6:00 am-11:46 am
1 stop4h 46m
$395
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
$399
Green BayColorado Springs
GRB - COS
GRBCOS
Green Bay Austin-Straubel
Tue 10/6
6:20 am-10:55 am
1 stop5h 35m
Colorado Springs
Tue 10/13
1:29 pm-11:19 pm
2 stops8h 50m
$404
Showing 1-10 of 43 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-DRO
GRB-COS
GRB-ASE
GRB-GJT
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-DRO
GRB-COS
GRB-ASE
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 $270). 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.
What is the cheapest time of day to fly from GRB to CO?
Find hourly flight availability from Green Bay to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 19, 2026.
A simple way to save on the total cost of your ticket is to fly from Green Bay to Colorado at noon. If you’re flexible enough to do this you can expect to save up to 62% on your trip compared to booking a flight in the morning.
How much does it cost to fly round-trip from Green Bay to Colorado?
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 19, 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.
Food
7.2
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Crew
8.5
Comfort
7.8
Entertainment
7.8
Overall
7.8
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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Search flights from Green Bay to Colorado by cabin class
Find flights from Green Bay to Colorado, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Green Bay and Colorado flights
Browse other Green Bay and Colorado flight options. Last updated on July 19, 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 4 airlines flying from Green Bay to Colorado
Discover the top 4 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 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$80 | Average$154 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$250 | Average$359 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$254 | Average$309 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$269 | Average$412 | FlexibilityNo cancel fee | On-time71% |