$63+ Cheap flights from Knoxville to Denver (TYS - DEN)
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 6/12. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — DEN
Apr 16 — Apr 231
Round-trip
1 adult, Economy
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Find cheap flights from Knoxville to Denver 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Denver Intl are usually found in November or October, booked 45 days in advance, depart on a Thursday or Sunday and return on a Thursday
Cheap flight deals from Knoxville to Denver
Cheapest
Best
Last-minute
One-way
Cheapest flights from Knoxville to DenverExplore the most affordable flight options available from Knoxville to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 17, 2026.
Explore the most affordable flight options available from Knoxville to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 17, 2026.
This Super.com deal was found by Cheapflights users on 3/12. 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 4/304:28 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Fri 5/82:46 pm
DEN
- TYS
Nonstop2h 47m
Frontier
Deal found 3/12![Frontier logo]()
$132
This Super.com deal was found by Cheapflights users on 3/12. 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 4/304:28 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Sun 5/310:45 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/12![Frontier logo]()
$138
This Frontier deal was found by Cheapflights users on 3/13. 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 4/104:20 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Mon 4/1310:40 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/13![Frontier logo]()
$139
This deal was found by Cheapflights users on 3/12. 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.
Fri 5/88:32 pm
TYS
- DEN
Nonstop3h 30m
Frontier
Mon 5/112:46 pm
DEN
- TYS
Nonstop2h 47m
Frontier
Deal found 3/12![Frontier logo]()
$148
This Frontier deal was found by Cheapflights users on 3/12. 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 3/12![Frontier logo]()
$151
This Frontier deal was found by Cheapflights users on 3/13. 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.
Wed 6/108:08 pm
TYS
- DEN
Nonstop3h 34m
Frontier
Mon 6/152:21 pm
DEN
- TYS
Nonstop2h 52m
Frontier
Deal found 3/13![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 3/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:00 am
TYS
- DEN
Nonstop3h 05m
Allegiant Air
Sun 9/138:55 am
DEN
- TYS
Nonstop2h 49m
Allegiant Air
Deal found 3/14![Allegiant Air logo]()
$162
This Frontier deal was found by Cheapflights users on 3/12. 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 6/18:32 pm
TYS
- DEN
Nonstop3h 30m
Frontier
Mon 6/82:46 pm
DEN
- TYS
Nonstop2h 47m
Frontier
Deal found 3/12![Frontier logo]()
$167
This deal was found by Cheapflights users on 3/13. 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.
Thu 4/234:28 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Sun 4/2610:45 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/13![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 3/13![Frontier logo]()
$172
Best flights from Knoxville to DenverDiscover carefully curated flight deals from Knoxville to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 17, 2026.
Discover carefully curated flight deals from Knoxville to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 17, 2026.
This United Airlines deal was found by Cheapflights users on 3/12. 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 4/111:25 am
TYS
- DEN
1 stop7h 02m
United Airlines
Tue 4/710:10 am
DEN
- TYS
Nonstop2h 56m
United Airlines
Deal found 3/12![United Airlines logo]()
$303
This Delta deal was found by Cheapflights users on 3/12. 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 7/315:57 pm
TYS
- DEN
1 stop7h 48m
Delta
Thu 8/610:45 am
DEN
- TYS
1 stop5h 30m
Delta
Deal found 3/12![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 3/12. 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
- DEN
2 stops6h 45m
Southwest
Tue 4/711:40 am
DEN
- TYS
2 stops6h 00m
Southwest
Deal found 3/12![Southwest logo]()
$323
This Delta deal was found by Cheapflights users on 3/14. 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.
Sun 8/167:20 pm
TYS
- DEN
1 stop6h 25m
Delta
Thu 8/206:05 am
DEN
- TYS
1 stop7h 02m
Delta
Deal found 3/14![Delta logo]()
$309
This United Airlines deal was found by Cheapflights users on 3/12. 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
- DEN
Nonstop3h 27m
United Airlines
Mon 5/185:27 pm
DEN
- TYS
Nonstop2h 56m
United Airlines
Deal found 3/12![United Airlines logo]()
$348
This Delta deal was found by Cheapflights users on 3/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/277:00 pm
TYS
- DEN
1 stop7h 36m
Delta
Sat 5/22:39 pm
DEN
- TYS
1 stop6h 20m
Delta
Deal found 3/16![Delta logo]()
$348
This United Airlines deal was found by Cheapflights users on 3/16. 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.
Sun 5/244:56 pm
TYS
- DEN
Nonstop3h 24m
United Airlines
Sat 5/305:25 pm
DEN
- TYS
Nonstop2h 54m
United Airlines
Deal found 3/16![United Airlines logo]()
$367
This Delta deal was found by Cheapflights users on 3/15. 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 6/106:15 pm
TYS
- DEN
1 stop6h 14m
Delta
Sun 6/1412:59 am
DEN
- TYS
1 stop6h 12m
Delta
Deal found 3/15![Delta logo]()
$364
This United Airlines deal was found by Cheapflights users on 3/12. 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 6/275:57 pm
TYS
- DEN
1 stop7h 41m
United Airlines
Sat 7/411:59 pm
DEN
- TYS
1 stop8h 43m
United Airlines
Deal found 3/12![United Airlines logo]()
$394
This United Airlines deal was found by Cheapflights users on 3/12. 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 4/297:05 am
TYS
- DEN
1 stop6h 38m
United Airlines
Fri 5/811:59 pm
DEN
- TYS
1 stop8h 50m
United Airlines
Deal found 3/12![United Airlines logo]()
$407
This United Airlines deal was found by Cheapflights users on 3/16. 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.
Mon 5/117:18 pm
TYS
- DEN
1 stop7h 26m
United Airlines
Wed 5/205:27 pm
DEN
- TYS
Nonstop2h 56m
United Airlines
Deal found 3/16![United Airlines logo]()
$410
Last-minute flights from Knoxville to DenverDiscover last-minute flight deals from Knoxville to Denver. Data last updated March 17, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Denver. Data last updated March 17, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 3/12. 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 3/12![Frontier logo]()
$151
This Frontier deal was found by Cheapflights users on 3/13. 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 4/104:20 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Mon 4/1310:40 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/13![Frontier logo]()
$139
This Frontier deal was found by Cheapflights users on 3/13. 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 4/104:20 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Thu 4/1610:45 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/13![Frontier logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 3/13![Frontier logo]()
$172
This deal was found by Cheapflights users on 3/13. 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.
Thu 4/234:28 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Sun 4/2610:45 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/13![Frontier logo]()
$168
This Super.com deal was found by Cheapflights users on 3/12. 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 4/304:28 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Fri 5/82:46 pm
DEN
- TYS
Nonstop2h 47m
Frontier
Deal found 3/12![Frontier logo]()
$132
This Super.com deal was found by Cheapflights users on 3/12. 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 4/304:28 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Sun 5/310:45 am
DEN
- TYS
Nonstop2h 48m
Frontier
Deal found 3/12![Frontier logo]()
$138
One-way flights from Knoxville to DenverSearch for one-way flight options from Knoxville to Denver. Find affordable one-way fares based on user searches. Data last updated March 17, 2026.
Search for one-way flight options from Knoxville to Denver. Find affordable one-way fares based on user searches. Data last updated March 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 6/128:08 pm
TYS
- DEN
Nonstop3h 34m
Frontier
Deal found 3/13![Frontier logo]()
$63
This Frontier deal was found by Cheapflights users on 3/13. 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.
Wed 6/108:08 pm
TYS
- DEN
Nonstop3h 34m
Frontier
Deal found 3/13![Frontier logo]()
$64
This Frontier deal was found by Cheapflights users on 3/13. 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 4/104:20 pm
TYS
- DEN
Nonstop3h 32m
Frontier
Deal found 3/13![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/27:00 am
TYS
- DEN
Nonstop3h 11m
Allegiant Air
Deal found 3/15![Allegiant Air logo]()
$72
This Super.com deal was found by Cheapflights users on 3/13. 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 5/118:32 pm
TYS
- DEN
Nonstop3h 30m
Frontier
Deal found 3/13![Frontier logo]()
$73
This Frontier deal was found by Cheapflights users on 3/12. 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 5/158:32 pm
TYS
- DEN
Nonstop3h 30m
Frontier
Deal found 3/12![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 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
Deal found 3/16![Allegiant Air logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 9/107:00 am
TYS
- DEN
Nonstop3h 05m
Allegiant Air
Deal found 3/13![Allegiant Air logo]()
$78
This Cheapflightsfares deal was found by Cheapflights users on 3/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/287:00 am
TYS
- DEN
Nonstop3h 15m
Allegiant Air
Deal found 3/15![Allegiant Air logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 7/127:00 am
TYS
- DEN
Nonstop3h 11m
Allegiant Air
Deal found 3/13![Allegiant Air logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 6/58:32 pm
TYS
- DEN
Nonstop3h 30m
Frontier
Deal found 3/12![Frontier logo]()
$97
Find flight deals from Knoxville to Denver
Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Denver (DEN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $132 (Super.com) |
One-way from | $63 (Kiwi.com) |
Popular in | March |
Cheapest in | November |
Average price | $358 |
Good round-trip deal | $248 or less |
Good one-way deal | $168 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Knoxville to Denver 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 17, 2026.
Use the filters below to find and compare flights from Knoxville to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Wed 4/1
11:25 am-4:27 pm
1 stop7h 02m
Denver Intl
Tue 4/7
10:10 am-3:06 pm
Nonstop2h 56m
$303
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Fri 7/31
5:57 pm-11:45 pm
1 stop7h 48m
Denver Intl
Thu 8/6
10:45 am-6:15 pm
1 stop5h 30m
$309
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Sun 8/16
7:20 pm-11:45 pm
1 stop6h 25m
Denver Intl
Thu 8/20
6:05 am-3:07 pm
1 stop7h 02m
$309
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Tue 3/31
6:35 am-11:20 am
2 stops6h 45m
Denver Intl
Tue 4/7
11:40 am-7:40 pm
2 stops6h 00m
$323
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Tue 5/12
4:20 pm-5:47 pm
Nonstop3h 27m
Denver Intl
Mon 5/18
5:27 pm-10:23 pm
Nonstop2h 56m
$348
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Mon 4/27
7:00 pm-12:36 am
1 stop7h 36m
Denver Intl
Sat 5/2
2:39 pm-10:59 pm
1 stop6h 20m
$348
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Wed 6/10
6:15 pm-10:29 pm
1 stop6h 14m
Denver Intl
Sun 6/14
12:59 am-9:11 am
1 stop6h 12m
$364
Quickest round-trip
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Sun 5/24
4:56 pm-6:20 pm
Nonstop3h 24m
Denver Intl
Sat 5/30
5:25 pm-10:19 pm
Nonstop2h 54m
$367
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Sat 6/27
5:57 pm-11:38 pm
1 stop7h 41m
Denver Intl
Sat 7/4
11:59 pm-10:42 am
1 stop8h 43m
$394
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Wed 4/29
7:05 am-11:43 am
1 stop6h 38m
Denver Intl
Fri 5/8
11:59 pm-10:49 am
1 stop8h 50m
$407
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Knoxville to Denver
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Denver in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Knoxville-Denver flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-Denver flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-Denver flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Knoxville-Denver flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Knoxville to Denver
Have a flexible travel schedule? Discover the best time to fly to Denver from Knoxville with our price prediction graph.
TYS-DEN
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 Denver
Prices
Airlines
How far ahead should I book a flight from Knoxville to Denver?
Use this chart to determine the optimal time to book a round-trip flight from Knoxville to Denver. Price data was last updated on March 13, 2026.
The price you pay for your flight from Knoxville to Denver may vary depending on when you book. For the best chance of a lower fare, look to book 45 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Knoxville to Denver?
Currently, August is the cheapest month in which you can book a flight from Knoxville to Denver (average of $59). Flying from Knoxville to Denver 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 DEN?
Find hourly flight availability from Knoxville to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 17, 2026.
One of the essential ways to save on airfare from Knoxville to Denver is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 55% on airfare.
Reviews of airlines servicing Denver
Get insights into the airlines that provide service to Denver. 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 Denver. Reviews last updated March 17, 2026.
See what other customers who have flown with Delta,United Airlines, andAllegiant Air from Knoxville to Denver have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Boarding
8.1
Crew
8.5
Comfort
7.9
Overall
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Boarding
8.1
Crew
8.5
Comfort
7.9
Overall
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Boarding
8.1
Crew
8.5
Comfort
7.9
Overall
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Boarding
8.1
Crew
8.5
Comfort
7.9
Overall
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Boarding
8.1
Crew
8.5
Comfort
7.9
Overall
7.9
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Boarding
8.1
Crew
8.5
Comfort
7.9
Overall
7.9
Entertainment
7.8
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 Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Denver?
Book flights to Denver if you plan to visit one of these locationsThornton
Black Hawk
Lakewood
Broomfield
Westminster
Golden
Centennial
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Cripple Creek
Winter Park
Glendale
Manitou Springs
Frisco
Englewood
Fort Morgan
Brighton
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Knoxville and Denver flights
Browse other Knoxville and Denver flight options. Last updated on March 17, 2026.
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Browse through other flights departing from Knoxville. Flights are based on user searches made on Cheapflights and were last updated on March 17, 2026.
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Top 6 airlines flying from Knoxville to Denver
Discover the top 6 airlines that operate flights from Knoxville to Denver. 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 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$62 | Average$150 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$72 | Average$174 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$124 | Average$273 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$218 | Average$298 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$229 | Average$356 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$248 | Average$298 | FlexibilityNo cancel fee | On-time63% |