Knoxville to Denver flights
Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for Knoxville to Denver is €75 with Allegiant Air (checked on 5 Nov 2026).
Your next trip, last seen at €75
Below averageAllegiant Air · Non-stop · One wayWhen to fly
Explore datesMore dates worth a look
Last seen for 1 traveller on 6 Nov 2026. Check today's price.
Find the dates that work for you
The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- 12 Nov€152
- 15 Nov€94
- 19 Nov€80
- 22 Nov€75
- 24 Nov€101
- 25 Nov€168
- Lowest observed
- €75, departing 22 Nov 2026 (Last checked: 5 Nov 2026)One-way fare · Priced departure days checked in the last 14 days: 65Check live prices for this route
- Non-stop, one way
- €75, departing 22 Nov 2026 (Last checked: 6 Nov 2026)
- Airlines seen
- Frontier Airlines, Allegiant Air, United Airlines, American Airlines
- Fastest observed flight time
- 3h 10m
- Non-stop
- Yes
About this route
Explore the fares we observed from Knoxville to Denver. Prices move often, so pick your dates to see the latest options.
- Route distance
- 1,892 km
- Fastest observed flight time
- 3h 10m
- Airlines seen
- Frontier Airlines, Allegiant Air, United Airlines, American Airlines
- Alternative airports
- APA
Route-level information; individual journeys vary.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Airport to city: straight-line distance
- McGhee Tyson Airport (TYS) → Knoxville, city gazetteer reference point (35.9606, -83.9207): ≈ 18 km.
- Denver International Airport (DEN) → Denver, city gazetteer reference point (39.7392, -104.9847): ≈ 30 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest fare by departure month
Cheapest month from Knoxville to Denver: November 2026, from €75 (checked 5 Nov 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| November 2026 | €75 | 6 |
| December 2026 | €110 | 15 |
| January 2027 | €106 | 23 |
| February 2027 | €103 | 18 |
| March 2027 | €170 | 3 |
Lowest fare by day of the week
Cheapest day of the week from Knoxville to Denver: Sunday, from €75 (checked 5 Nov 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €110 | 12 |
| Tuesday | €101 | 10 |
| Wednesday | €106 | 7 |
| Thursday | €80 | 11 |
| Friday | €132 | 11 |
| Saturday | €172 | 3 |
| Sunday | €75 | 11 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Lowest fare by days before departure
Lowest fare from Knoxville to Denver by days until departure (8 to 30 days): €75 (checked 5 Nov 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 8 to 30 days | €75 | 10 |
| 31 to 60 days | €110 | 13 |
| 61 days or more | €103 | 40 |
One-way fares checked in the last 14 days. Each figure is the lowest stored fare for that distance to departure, not a price forecast.
Fares for different departure dates, checked now; not a guide to when to book.
Frequently asked
How much is a flight from Knoxville to Denver?
The lowest fare Routavio has observed is €75, found on 5 Nov 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Knoxville to Denver?
Cheapest month from Knoxville to Denver: November 2026, from €75 (checked 5 Nov 2026).
Are there direct flights from Knoxville to Denver?
Yes. Published schedules report non-stop flights on this route with Frontier Airlines, Allegiant Air, United Airlines.
Which airlines fly from Knoxville to Denver?
Routavio has seen these carriers on the route: Frontier Airlines, Allegiant Air, United Airlines, American Airlines.
How long does the flight from Knoxville to Denver take?
Across the 108 fares Routavio observed, the average journey time is 16h 48m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Knoxville to Denver fares were non-stop?
27 of the 108 fares we observed were non-stop; the rest included at least one stop. That describes our observations, not every flight that operates.
How much is a non-stop flight from Knoxville to Denver?
Cheapest non-stop one-way fare: €75, departing 22 Nov 2026 (checked 6 Nov 2026).
Which day of the week is cheapest from Knoxville to Denver?
Cheapest day of the week from Knoxville to Denver: Sunday, from €75 (checked 5 Nov 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
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Recently observed fares. Prices may change.