$48+ Cheap flights from Knoxville (TYS) 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — DEN
Apr 9 — Apr 161
Round-trip
1 adult, Economy
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Cheapest flights from Knoxville to ColoradoExplore the most affordable flight options available from Knoxville to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.
Explore the most affordable flight options available from Knoxville to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/288:08 pm
TYS
- DEN
Nonstop3h 34m
Frontier
Mon 8/312:21 pm
DEN
- TYS
Nonstop2h 52m
Frontier
Deal found 3/6![Frontier logo]()
$129
This Frontier deal was found by Cheapflights users on 3/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/74:28 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Sun 5/1010:45 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/5![Frontier logo]()
$130
This Super.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/234:28 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Sun 4/2610:45 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/9![Frontier logo]()
$132
This Frontier deal was found by Cheapflights users on 3/6. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/18:08 pm
TYS
- DEN
Nonstop3h 34m
Frontier
Mon 6/82:21 pm
DEN
- TYS
Nonstop2h 52m
Frontier
Deal found 3/6![Frontier logo]()
$136
This Super.com deal was found by Cheapflights users on 3/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/104:20 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Mon 4/1310:40 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/8![Frontier logo]()
$138
This Super.com deal was found by Cheapflights users on 3/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:28 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Sun 4/2610:45 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/5![Frontier logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:28 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Sun 4/1910:45 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/6![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/258:08 pm
TYS
- DEN
Nonstop3h 34m
Frontier
Fri 5/292:21 pm
DEN
- TYS
Nonstop2h 52m
Frontier
Deal found 3/6![Frontier logo]()
$146
This Frontier deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/34:20 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Mon 4/610:40 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/9![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 3/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:00 am
TYS
- DEN
Nonstop3h 05m
Allegiant Air
Sun 9/208:55 am
DEN
- TYS
Nonstop2h 49m
Allegiant Air
Deal found 3/7![Allegiant Air logo]()
$155
This United Airlines deal was found by Cheapflights users on 3/8. 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 3/234:18 pm
TYS
- MTJ
1 stop5h 48m
United Airlines
Fri 3/271:42 pm
MTJ
- TYS
1 stop6h 48m
United Airlines
Deal found 3/8![United Airlines logo]()
$289
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/104:30 pm
TYS
- COS
1 stop6h 16m
United Airlines
Tue 4/141:33 pm
COS
- TYS
1 stop6h 56m
United Airlines
Deal found 3/10![United Airlines logo]()
$296
Best flights from Knoxville to ColoradoDiscover carefully curated flight deals from Knoxville to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 10, 2026.
Discover carefully curated flight deals from Knoxville to Colorado that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 10, 2026.
This Southwest deal was found by Cheapflights users on 3/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/165:40 pm
TYS
- DEN
1 stop6h 55m
Southwest
Sun 5/2411:05 am
DEN
- TYS
Nonstop2h 40m
Southwest
Deal found 3/7![Southwest logo]()
$259
This Delta deal was found by Cheapflights users on 3/5. 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 4/237:00 pm
TYS
- DEN
1 stop7h 36m
Delta
Sun 4/2612:35 am
DEN
- TYS
1 stop7h 46m
Delta
Deal found 3/5![Delta logo]()
$269
This United Airlines deal was found by Cheapflights users on 3/5. 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 5/165:55 pm
TYS
- DEN
1 stop7h 55m
United Airlines
Mon 5/1811:59 pm
DEN
- TYS
1 stop8h 50m
United Airlines
Deal found 3/5![United Airlines logo]()
$269
This American Airlines deal was found by Cheapflights users on 3/6. 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 4/166:00 am
TYS
- MTJ
1 stop7h 58m
American Airlines
Mon 4/2012:37 pm
MTJ
- TYS
2 stops9h 18m
American Airlines
Deal found 3/6![American Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 3/5. 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 4/175:54 pm
TYS
- DEN
1 stop6h 12m
Delta
Fri 4/2412:35 am
DEN
- TYS
1 stop7h 46m
Delta
Deal found 3/5![Delta logo]()
$269
This Southwest deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/23:45 pm
TYS
- DEN
1 stop6h 15m
Southwest
Mon 4/610:50 am
DEN
- TYS
2 stops8h 25m
Southwest
Deal found 3/9![Southwest logo]()
$274
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/94:30 pm
TYS
- DEN
Nonstop3h 26m
United Airlines
Sun 4/126:00 am
DEN
- TYS
1 stop7h 09m
United Airlines
Deal found 3/9![United Airlines logo]()
$279
This Southwest deal was found by Cheapflights users on 3/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/16:35 am
TYS
- DEN
2 stops6h 45m
Southwest
Wed 4/1511:20 am
DEN
- TYS
2 stops6h 20m
Southwest
Deal found 3/7![Southwest logo]()
$280
This United Airlines deal was found by Cheapflights users on 3/8. 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 3/234:18 pm
TYS
- MTJ
1 stop5h 48m
United Airlines
Fri 3/271:42 pm
MTJ
- TYS
1 stop6h 48m
United Airlines
Deal found 3/8![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 3/8. 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 5/157:33 pm
TYS
- DEN
1 stop7h 00m
Delta
Sun 5/1712:55 am
DEN
- TYS
1 stop7h 26m
Delta
Deal found 3/8![Delta logo]()
$294
This Southwest deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/92:45 pm
TYS
- DEN
2 stops7h 10m
Southwest
Sun 4/1210:30 am
DEN
- TYS
Nonstop2h 45m
Southwest
Deal found 3/9![Southwest logo]()
$284
This American Airlines deal was found by Cheapflights users on 3/8. 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 3/2410:40 am
TYS
- ASE
1 stop7h 26m
American Airlines
Sat 3/283:50 pm
ASE
- TYS
1 stop6h 01m
American Airlines
Deal found 3/8![American Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/57:05 am
TYS
- DEN
1 stop7h 13m
United Airlines
Tue 4/1410:10 am
DEN
- TYS
Nonstop2h 56m
United Airlines
Deal found 3/9![United Airlines logo]()
$295
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/104:30 pm
TYS
- COS
1 stop6h 16m
United Airlines
Tue 4/141:33 pm
COS
- TYS
1 stop6h 56m
United Airlines
Deal found 3/10![United Airlines logo]()
$296
This Delta deal was found by Cheapflights users on 3/8. 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 5/273:30 pm
TYS
- COS
1 stop7h 57m
Delta
Tue 6/96:00 am
COS
- TYS
1 stop5h 25m
Delta
Deal found 3/8![Delta logo]()
$361
This American Airlines deal was found by Cheapflights users on 3/6. 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 3/194:29 pm
TYS
- ASE
1 stop6h 25m
American Airlines
Tue 3/2410:41 am
ASE
- TYS
2 stops11h 18m
American Airlines
Deal found 3/6![American Airlines logo]()
$409
This Southwest deal was found by Cheapflights users on 3/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/246:35 am
TYS
- COS
2 stops11h 05m
Southwest
Wed 3/257:25 am
COS
- TYS
2 stops10h 40m
Southwest
Deal found 3/5![Southwest logo]()
$365
This American Airlines deal was found by Cheapflights users on 3/6. 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 3/205:40 am
TYS
- ASE
1 stop6h 31m
American Airlines
Tue 3/2410:41 am
ASE
- TYS
2 stops11h 18m
American Airlines
Deal found 3/6![American Airlines logo]()
$409
This United Airlines deal was found by Cheapflights users on 3/5. 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 5/124:20 pm
TYS
- MTJ
1 stop5h 58m
United Airlines
Tue 5/191:43 pm
MTJ
- TYS
1 stop6h 40m
United Airlines
Deal found 3/5![United Airlines logo]()
$353
This United Airlines deal was found by Cheapflights users on 3/5. 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 8/225:57 pm
TYS
- COS
2 stops7h 52m
United Airlines
Wed 8/268:38 am
COS
- TYS
1 stop5h 16m
United Airlines
Deal found 3/5![United Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 3/8. 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 5/276:30 am
TYS
- COS
2 stops10h 10m
United Airlines
Tue 6/912:56 pm
COS
- TYS
1 stop7h 23m
United Airlines
Deal found 3/8![United Airlines logo]()
$354
This United Airlines deal was found by Cheapflights users on 3/6. 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 4/164:30 pm
TYS
- MTJ
1 stop5h 50m
United Airlines
Mon 4/207:15 am
MTJ
- TYS
1 stop5h 51m
United Airlines
Deal found 3/6![United Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 3/7. 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 3/235:40 am
TYS
- EGE
1 stop6h 54m
Delta
Fri 3/273:31 pm
EGE
- TYS
1 stop6h 26m
Delta
Deal found 3/7![Delta logo]()
$551
This United Airlines deal was found by Cheapflights users on 3/8. 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 3/247:05 am
TYS
- DRO
2 stops12h 00m
United Airlines
Sat 3/281:41 pm
DRO
- TYS
2 stops8h 03m
United Airlines
Deal found 3/8![United Airlines logo]()
$359
This United Airlines deal was found by Cheapflights users on 3/5. 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 4/284:30 pm
TYS
- GJT
1 stop7h 47m
United Airlines
Sat 5/21:48 pm
GJT
- TYS
1 stop6h 35m
United Airlines
Deal found 3/5![United Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/34:30 pm
TYS
- GJT
1 stop6h 29m
United Airlines
Tue 4/77:01 am
GJT
- TYS
1 stop6h 05m
United Airlines
Deal found 3/9![United Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 3/6. 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 5/276:30 am
TYS
- GJT
2 stops8h 01m
United Airlines
Tue 6/21:33 pm
GJT
- TYS
2 stops8h 57m
United Airlines
Deal found 3/6![United Airlines logo]()
$383
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/94:20 pm
TYS
- MTJ
1 stop5h 58m
United Airlines
Mon 5/181:43 pm
MTJ
- TYS
1 stop6h 40m
United Airlines
Deal found 3/9![United Airlines logo]()
$394
This American Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/135:40 am
TYS
- DRO
1 stop6h 12m
American Airlines
Sun 3/156:37 pm
DRO
- TYS
2 stops12h 05m
American Airlines
Deal found 3/9![American Airlines logo]()
$984
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/84:20 pm
TYS
- MTJ
1 stop5h 58m
United Airlines
Sun 5/171:43 pm
MTJ
- TYS
1 stop6h 40m
United Airlines
Deal found 3/9![United Airlines logo]()
$404
Last-minute flights from Knoxville to ColoradoDiscover last-minute flight deals from Knoxville to Colorado. Data last updated March 10, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Colorado. Data last updated March 10, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/204:20 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Mon 3/2310:40 am
DEN
- TYS
Nonstop2h 45m
Frontier
Deal found 3/6![Frontier logo]()
$159
This Frontier deal was found by Cheapflights users on 3/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/204:20 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Mon 3/3010:40 am
DEN
- TYS
Nonstop2h 45m
Frontier
Deal found 3/5![Frontier logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/234:20 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Mon 3/3010:40 am
DEN
- TYS
Nonstop2h 45m
Frontier
Deal found 3/5![Frontier logo]()
$175
This United Airlines deal was found by Cheapflights users on 3/8. 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 3/234:18 pm
TYS
- MTJ
1 stop5h 48m
United Airlines
Fri 3/271:42 pm
MTJ
- TYS
1 stop6h 48m
United Airlines
Deal found 3/8![United Airlines logo]()
$289
This Priceline deal was found by Cheapflights users on 3/6. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/274:20 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Mon 3/3010:40 am
DEN
- TYS
Nonstop2h 45m
Frontier
Deal found 3/6![Frontier logo]()
$179
This Frontier deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/34:20 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Mon 4/610:40 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/9![Frontier logo]()
$152
This Super.com deal was found by Cheapflights users on 3/8. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/104:20 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Mon 4/1310:40 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/8![Frontier logo]()
$138
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/104:30 pm
TYS
- COS
1 stop6h 16m
United Airlines
Tue 4/141:33 pm
COS
- TYS
1 stop6h 56m
United Airlines
Deal found 3/10![United Airlines logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/134:20 pm
TYS
- DEN
Nonstop3h 32m
Multiple Airlines
Tue 4/1411:59 pm
DEN
- TYS
2 stops37h 42m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$166
This Super.com deal was found by Cheapflights users on 3/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:28 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Sun 4/2610:45 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/5![Frontier logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:28 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Sun 4/1910:45 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/6![Frontier logo]()
$141
This Super.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/234:28 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Sun 4/2610:45 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/9![Frontier logo]()
$132
One-way flights from Knoxville to ColoradoSearch for one-way flight options from Knoxville to Colorado. Find affordable one-way fares based on user searches. Data last updated March 10, 2026.
Search for one-way flight options from Knoxville to Colorado. Find affordable one-way fares based on user searches. Data last updated March 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/304:28 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Deal found 3/7![Frontier logo]()
$48
This Frontier deal was found by Cheapflights users on 3/5. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/34:20 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Deal found 3/5![Frontier logo]()
$49
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/228:08 pm
TYS
- DEN
Nonstop3h 34m
Frontier
Deal found 3/9![Frontier logo]()
$61
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/204:20 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Deal found 3/6![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/18:08 pm
TYS
- DEN
Nonstop3h 34m
Frontier
Deal found 3/10![Frontier logo]()
$69
This Priceline deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/104:20 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Deal found 3/9![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:08 pm
TYS
- DEN
Nonstop3h 34m
Frontier
Deal found 3/10![Frontier logo]()
$81
This Super.com deal was found by Cheapflights users on 3/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/234:20 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Deal found 3/5![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 3/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/231:14 pm
TYS
- COS
1 stop22h 45m
Allegiant Air
Deal found 3/5![Allegiant Air logo]()
$132
This American Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/3112:21 pm
TYS
- COS
1 stop5h 39m
American Airlines
Deal found 3/9![American Airlines logo]()
$135
This American Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/17:02 am
TYS
- COS
2 stops10h 56m
American Airlines
Deal found 3/10![American Airlines logo]()
$140
This Southwest deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:35 am
TYS
- COS
2 stops11h 05m
Southwest
Deal found 3/9![Southwest logo]()
$146
Find flight deals from Knoxville to Colorado
Keep the following information in mind while searching for Knoxville to Colorado flight deals. Data was last updated March 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $129 (Kiwi.com) |
One-way from | $48 (Kiwi.com) |
Popular in | March |
Cheapest in | November |
Average price | $344 |
Good round-trip deal | $265 or less |
Good one-way deal | $180 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Knoxville 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 March 10, 2026.
Use the filters below to find and compare flights from Knoxville to Colorado that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Sat 5/16
5:40 pm-10:35 pm
1 stop6h 55m
Denver Intl
Sun 5/24
11:05 am-3:45 pm
Nonstop2h 40m
$259
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Thu 4/23
7:00 pm-12:36 am
1 stop7h 36m
Denver Intl
Sun 4/26
12:35 am-10:21 am
1 stop7h 46m
$269
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Sat 5/16
5:55 pm-11:50 pm
1 stop7h 55m
Denver Intl
Mon 5/18
11:59 pm-10:49 am
1 stop8h 50m
$269
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Fri 4/17
5:54 pm-10:06 pm
1 stop6h 12m
Denver Intl
Fri 4/24
12:35 am-10:21 am
1 stop7h 46m
$269
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Thu 4/2
3:45 pm-8:00 pm
1 stop6h 15m
Denver Intl
Mon 4/6
10:50 am-9:15 pm
2 stops8h 25m
$274
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Thu 4/9
4:30 pm-5:56 pm
Nonstop3h 26m
Denver Intl
Sun 4/12
6:00 am-3:09 pm
1 stop7h 09m
$279
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Wed 4/1
6:35 am-11:20 am
2 stops6h 45m
Denver Intl
Wed 4/15
11:20 am-7:40 pm
2 stops6h 20m
$280
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Thu 4/9
2:45 pm-7:55 pm
2 stops7h 10m
Denver Intl
Sun 4/12
10:30 am-3:15 pm
Nonstop2h 45m
$284
KnoxvilleMontrose
TYS - MTJ
TYSMTJ
Knoxville McGhee Tyson
Mon 3/23
4:18 pm-8:06 pm
1 stop5h 48m
Montrose County
Fri 3/27
1:42 pm-10:30 pm
1 stop6h 48m
$289
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Fri 5/15
7:33 pm-12:33 am
1 stop7h 00m
Denver Intl
Sun 5/17
12:55 am-10:21 am
1 stop7h 26m
$294
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Knoxville to Colorado
Have a flexible travel schedule? Discover the best time to fly to Colorado from Knoxville with our price prediction graph.
TYS-DEN
TYS-MTJ
TYS-COS
TYS-GJT
TYS-DRO
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 Knoxville to Colorado
TYS-USCO
TYS-DEN
TYS-MTJ
TYS-COS
TYS-GJT
What is the cheapest month to book a flight from Knoxville to Colorado?
Currently, August is the cheapest month in which you can book a flight from Knoxville to Colorado (average of $58). Flying from Knoxville to Colorado in January is currently the most expensive (average of $158). 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 TYS to CO?
Find hourly flight availability from Knoxville 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 March 10, 2026.
Unlike in the morning, when flights are generally more expensive, you can save up to 56% on flights from Knoxville to Colorado by exploring options for tickets in the evening.
Weekly flight availability from Knoxville to Colorado
Explore weekly flight availability from Knoxville to Colorado. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 10, 2026.
The most flights from TYS to USCO are scheduled on a Monday (3 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).
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 March 10, 2026.
See what other customers who have flown with Delta,United Airlines, andAllegiant Air from Knoxville to Colorado have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.9
Overall
7.9
Crew
8.5
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Overall
7.9
Crew
8.5
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Overall
7.9
Crew
8.5
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Overall
7.9
Crew
8.5
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Overall
7.9
Crew
8.5
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Comfort
7.9
Overall
7.9
Crew
8.5
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from Knoxville 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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Complete your trip
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Knoxville and Colorado flights
Browse other Knoxville and Colorado flight options. Last updated on March 10, 2026.
Popular flight searches
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Knoxville to Colorado flights
Consider these flights traveling from Knoxville to Colorado.
Top 6 airlines flying from Knoxville to Colorado
Discover the top 6 airlines that operate flights from Knoxville 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 March 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$62 | Average$148 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$74 | Average$175 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$124 | Average$306 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$218 | Average$405 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$229 | Average$438 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$248 | Average$323 | FlexibilityNo cancel fee | On-time63% |