$48+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — DEN
Jul 13 — Jul 201
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 September or November, booked 65 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 June 13, 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 June 13, 2026.
This CheapOair deal was found by Cheapflights users on 6/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:00 am
TYS
- DEN
Nonstop3h 21m
Allegiant Air
Thu 8/139:11 am
DEN
- TYS
Nonstop2h 50m
Allegiant Air
Deal found 6/8![Allegiant Air logo]()
$128
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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.
Thu 9/247:00 am
TYS
- DEN
Nonstop3h 05m
Allegiant Air
Sun 9/278:55 am
DEN
- TYS
Nonstop2h 49m
Allegiant Air
Deal found 6/11![Allegiant Air logo]()
$129
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 8/237:00 am
TYS
- DEN
Nonstop3h 10m
Allegiant Air
Sun 9/138:55 am
DEN
- TYS
Nonstop2h 49m
Allegiant Air
Deal found 6/11![Allegiant Air logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 6/12. 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.
Thu 8/207:00 am
TYS
- DEN
Nonstop3h 10m
Allegiant Air
Sun 8/239:00 am
DEN
- TYS
Nonstop2h 49m
Allegiant Air
Deal found 6/12![Allegiant Air logo]()
$133
This Cheapflightsfares deal was found by Cheapflights users on 6/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/307:00 am
TYS
- DEN
Nonstop3h 10m
Allegiant Air
Sun 9/68:55 am
DEN
- TYS
Nonstop2h 49m
Allegiant Air
Deal found 6/8![Allegiant Air logo]()
$135
This CheapOair deal was found by Cheapflights users on 6/10. 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 CheapOair 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
Thu 7/239:01 am
DEN
- TYS
Nonstop2h 50m
Allegiant Air
Deal found 6/10![Allegiant Air logo]()
$138
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares 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 6/10![Allegiant Air logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/128:19 pm
TYS
- DEN
Nonstop3h 23m
Multiple Airlines
Thu 8/139:11 am
DEN
- TYS
Nonstop2h 50m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$143
This Cheapflightsfares deal was found by Cheapflights users on 6/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:30 am
TYS
- DEN
Nonstop3h 06m
Allegiant Air
Thu 10/158:26 am
DEN
- TYS
Nonstop2h 45m
Allegiant Air
Deal found 6/8![Allegiant Air logo]()
$144
This CheapOair deal was found by Cheapflights users on 6/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/267:00 am
TYS
- DEN
Nonstop3h 11m
Allegiant Air
Thu 7/309:01 am
DEN
- TYS
Nonstop2h 50m
Allegiant Air
Deal found 6/11![Allegiant Air logo]()
$156
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 June 13, 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 June 13, 2026.
This Southwest deal was found by Cheapflights users on 6/11. 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 9/15:30 pm
TYS
- DEN
1 stop7h 00m
Southwest
Tue 9/86:00 am
DEN
- TYS
1 stop6h 20m
Southwest
Deal found 6/11![Southwest logo]()
$240
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Thu 9/174:50 pm
TYS
- DEN
Nonstop3h 20m
United Airlines
Tue 9/225:50 pm
DEN
- TYS
Nonstop2h 54m
United Airlines
Deal found 6/8![United Airlines logo]()
$252
This Delta deal was found by Cheapflights users on 6/12. 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 7/247:49 pm
TYS
- DEN
1 stop6h 34m
Delta
Sun 7/2612:59 am
DEN
- TYS
1 stop7h 23m
Delta
Deal found 6/12![Delta logo]()
$387
This United Airlines deal was found by Cheapflights users on 6/12. 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 9/269:00 am
TYS
- DEN
Nonstop3h 18m
United Airlines
Mon 9/285:25 pm
DEN
- TYS
Nonstop2h 49m
United Airlines
Deal found 6/12![United Airlines logo]()
$309
This Southwest deal was found by Cheapflights users on 6/11. 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 7/145:40 pm
TYS
- DEN
Nonstop3h 20m
Southwest
Sun 7/2611:55 pm
DEN
- TYS
1 stop11h 50m
Southwest
Deal found 6/11![Southwest logo]()
$373
This Southwest deal was found by Cheapflights users on 6/12. 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.
Sat 9/267:50 am
TYS
- DEN
2 stops7h 20m
Southwest
Mon 9/285:00 am
DEN
- TYS
1 stop6h 25m
Southwest
Deal found 6/12![Southwest logo]()
$392
This United Airlines deal was found by Cheapflights users on 6/9. 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 7/174:56 pm
TYS
- DEN
Nonstop3h 24m
United Airlines
Sat 8/85:25 pm
DEN
- TYS
Nonstop2h 54m
United Airlines
Deal found 6/9![United Airlines logo]()
$402
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Thu 8/64:56 pm
TYS
- DEN
Nonstop3h 24m
United Airlines
Thu 8/1311:59 pm
DEN
- TYS
1 stop8h 38m
United Airlines
Deal found 6/12![United Airlines logo]()
$410
This Southwest deal was found by Cheapflights users on 6/12. 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.
Sun 7/197:05 am
TYS
- DEN
2 stops7h 45m
Southwest
Sat 7/251:35 pm
DEN
- TYS
Nonstop2h 45m
Southwest
Deal found 6/12![Southwest logo]()
$472
This United Airlines deal was found by Cheapflights users on 6/12. 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.
Fri 7/247:19 pm
TYS
- DEN
1 stop7h 11m
United Airlines
Mon 7/275:25 pm
DEN
- TYS
Nonstop2h 54m
United Airlines
Deal found 6/12![United Airlines logo]()
$467
This Southwest deal was found by Cheapflights users on 6/11. 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.
Fri 7/176:40 am
TYS
- DEN
2 stops7h 15m
Southwest
Mon 7/2011:20 am
DEN
- TYS
2 stops7h 55m
Southwest
Deal found 6/11![Southwest logo]()
$479
Last-minute flights from Knoxville to DenverDiscover last-minute flight deals from Knoxville to Denver. Data last updated June 13, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Denver. Data last updated June 13, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 6/10. 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 CheapOair 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
Thu 7/239:01 am
DEN
- TYS
Nonstop2h 50m
Allegiant Air
Deal found 6/10![Allegiant Air logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 7/136:30 am
TYS
- DEN
1 stop27h 19m
Multiple Airlines
Thu 7/239:01 am
DEN
- TYS
Nonstop2h 50m
Multiple Airlines
Deal found 6/11![Multiple Airlines logo]()
$186
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/237:00 am
TYS
- DEN
Nonstop3h 11m
Allegiant Air
Thu 7/309:01 am
DEN
- TYS
Nonstop2h 50m
Allegiant Air
Deal found 6/12![Allegiant Air logo]()
$177
This CheapOair deal was found by Cheapflights users on 6/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/267:00 am
TYS
- DEN
Nonstop3h 11m
Allegiant Air
Thu 7/309:01 am
DEN
- TYS
Nonstop2h 50m
Allegiant Air
Deal found 6/11![Allegiant Air logo]()
$156
This CheapOair deal was found by Cheapflights users on 6/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/267:00 am
TYS
- DEN
Nonstop3h 11m
Allegiant Air
Sun 8/29:01 am
DEN
- TYS
Nonstop2h 50m
Allegiant Air
Deal found 6/11![Allegiant Air logo]()
$170
This Cheapflightsfares deal was found by Cheapflights users on 6/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/307:00 am
TYS
- DEN
Nonstop3h 11m
Allegiant Air
Sun 8/29:01 am
DEN
- TYS
Nonstop2h 50m
Allegiant Air
Deal found 6/10![Allegiant Air logo]()
$191
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 June 13, 2026.
Search for one-way flight options from Knoxville to Denver. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
This CheapOair deal was found by Cheapflights users on 6/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:30 am
TYS
- DEN
Nonstop3h 06m
Allegiant Air
Deal found 6/11![Allegiant Air logo]()
$48
This CheapOair deal was found by Cheapflights users on 6/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/67:00 am
TYS
- DEN
Nonstop3h 05m
Allegiant Air
Deal found 6/9![Allegiant Air logo]()
$56
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Sun 8/97:00 am
TYS
- DEN
Nonstop3h 21m
Allegiant Air
Deal found 6/9![Allegiant Air logo]()
$57
This Kiwi.com deal was found by Cheapflights users on 6/12. 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.
Thu 8/207:00 am
TYS
- DEN
Nonstop3h 10m
Allegiant Air
Deal found 6/12![Allegiant Air logo]()
$61
This Frontier deal was found by Cheapflights users on 6/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:19 pm
TYS
- DEN
Nonstop3h 23m
Frontier
Deal found 6/10![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:00 am
TYS
- DEN
Nonstop3h 05m
Allegiant Air
Deal found 6/8![Allegiant Air logo]()
$67
This Kiwi.com deal was found by Cheapflights users on 6/12. 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.
Thu 8/67:00 am
TYS
- DEN
Nonstop3h 21m
Allegiant Air
Deal found 6/12![Allegiant Air logo]()
$68
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/207:00 am
TYS
- DEN
Nonstop3h 05m
Allegiant Air
Deal found 6/12![Allegiant Air logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 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 6/8![Allegiant Air logo]()
$78
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 June 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $128 (CheapOair) |
One-way from | $48 (CheapOair) |
Popular in | March |
Cheapest in | September |
Average price | $330 |
Good round-trip deal | $285 or less |
Good one-way deal | $183 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 June 13, 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
Tue 9/1
5:30 pm-10:30 pm
1 stop7h 00m
Denver Intl
Tue 9/8
6:00 am-2:20 pm
1 stop6h 20m
$240
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Thu 9/17
4:50 pm-6:10 pm
Nonstop3h 20m
Denver Intl
Tue 9/22
5:50 pm-10:44 pm
Nonstop2h 54m
$252
Quickest round-trip
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Sat 9/26
9:00 am-10:18 am
Nonstop3h 18m
Denver Intl
Mon 9/28
5:25 pm-10:14 pm
Nonstop2h 49m
$309
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Tue 7/14
5:40 pm-7:00 pm
Nonstop3h 20m
Denver Intl
Sun 7/26
11:55 pm-1:45 pm
1 stop11h 50m
$373
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Fri 7/24
7:49 pm-12:23 am
1 stop6h 34m
Denver Intl
Sun 7/26
12:59 am-10:22 am
1 stop7h 23m
$387
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Sat 9/26
7:50 am-1:10 pm
2 stops7h 20m
Denver Intl
Mon 9/28
5:00 am-1:25 pm
1 stop6h 25m
$392
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Fri 7/17
4:56 pm-6:20 pm
Nonstop3h 24m
Denver Intl
Sat 8/8
5:25 pm-10:19 pm
Nonstop2h 54m
$402
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Thu 8/6
4:56 pm-6:20 pm
Nonstop3h 24m
Denver Intl
Thu 8/13
11:59 pm-10:37 am
1 stop8h 38m
$410
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Fri 7/24
7:19 pm-12:30 am
1 stop7h 11m
Denver Intl
Mon 7/27
5:25 pm-10:19 pm
Nonstop2h 54m
$467
KnoxvilleDenver
TYS - DEN
TYSDEN
Knoxville McGhee Tyson
Sun 7/19
7:05 am-12:50 pm
2 stops7h 45m
Denver Intl
Sat 7/25
1:35 pm-6:20 pm
Nonstop2h 45m
$472
Showing 1-10 of 21 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 June.
| 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?
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 64 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, September is the cheapest month in which you can book a flight from Knoxville to Denver (average of $218). Flying from Knoxville to Denver in March is currently the most expensive (average of $382). 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 June 13, 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 at noon could potentially save you up to 54% on airfare.
What is the cheapest day to fly from Knoxville to Denver?
Use this chart to determine the cheapest time to fly round-trip from Knoxville to Denver. Price data was last updated on June 8, 2026.
Travelers seeking maximum savings on their Knoxville to Denver flight should consider departing on Friday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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 June 13, 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.
Comfort
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Boarding
8.1
Food
7.2
Crew
8.5
Entertainment
7.8
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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
Westminster
Lakewood
Centennial
Broomfield
Golden
Greeley
Fort Morgan
Lone Tree
Wheat Ridge
Silverthorne
Central City
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Glendale
Evergreen
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Other flights to Denver
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Knoxville and Denver flights
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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 June 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$62 | Average$158 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$71 | Average$177 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$124 | Average$317 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$218 | Average$307 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$229 | Average$373 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$254 | Average$382 | FlexibilityNo cancel fee | On-time63% |