Skip to content

All Products

Aviation Intelligence

Alerts & Airspace

Free Pilot Tools & Widgets

RC Aviation

Games & Learning

Weather Research & More

Pilot Resources

My Airports

Your shortcuts, saved on this device. Search to add an airport.

No airports saved yet. Add the fields you visit most.

Ask ATIS

Route on-time record

DEN to TYS: most on-time flights and the best time to fly

Denver (Denver International Airport) to Knoxville/Maryville (McGhee Tyson Airport). 938 nonstop flights in Jun 2025 to May 2026, 77% arrived within 15 minutes and 0.5% were cancelled. The most reliable flight number was United 2041 at 10:10 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

DEN → TYS

Denver to Knoxville/Maryville: 938 nonstop flights a year

On time (12 months)

77%

Cancelled

0.5%

avg delay 19 min

Best time to leave

9 AM to noon

84% on time vs 66% 3 to 6 PM

Most reliable airline

United

82% chance on time

Check DEN to TYS fares

Fares open on our travel partner (Aviasales). Pick the flight number you chose here.

Most reliable nonstop flights

Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.

  1. #1 · United 2041

    10:10 AM → 3:06 PM2h 56m nonstop

    Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as United 1522; its record covers all of them.

    86%

    chance on time

    On time (history)
    87%
    Cancelled
    0.0%
    Avg arrival delay
    6 min
    • Arrived on time 87% of the time (77 flights, Jun 2025 to May 2026).
    • Never cancelled in 77 scheduled flights.
    • Leaves in this route's most on-time window (9 AM to noon: 84% on time; 3 to 6 PM: 66%).
    • Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).

    Moderate track record · 77 flights

    Find United 2041 fares Opens this date on Aviasales

  2. #2 · United 2787

    10:58 AM → 3:53 PM2h 55m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    83%

    chance on time

    On time (history)
    73%
    Cancelled
    0.0%
    Avg arrival delay
    11 min
    • Arrived on time 73% of the time (11 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (9 AM to noon: 84% on time; 3 to 6 PM: 66%).
    • Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).
    • Short track record (11 flights), so its score leans on the airline's record at this hour.

    Limited track record · 11 flights

    Find United 2787 fares Opens this date on Aviasales

  3. #3 · Frontier 2374

    10:40 AM → 3:25 PM2h 47m nonstop

    Local times, typical schedule. Last flown 2026-05-29.

    80%

    chance on time

    On time (history)
    79%
    Cancelled
    0.0%
    Avg arrival delay
    13 min
    • Arrived on time 79% of the time (125 flights, Jun 2025 to May 2026).
    • Never cancelled in 125 scheduled flights.
    • Leaves in this route's most on-time window (9 AM to noon: 84% on time; 3 to 6 PM: 66%).
    • Departs outside DEN's trouble window (2 PM to 8 PM, when 79% of its 174 ground stops and delay programs started).

    Moderate track record · 125 flights

    Find Frontier 2374 fares Opens this date on Aviasales

  4. #4 · Southwest 3906

    2:45 PM → 7:35 PM2h 50m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    76%

    chance on time

    On time (history)
    73%
    Cancelled
    0.0%
    Avg arrival delay
    13 min
    • Arrived on time 73% of the time (15 flights, Jun 2025 to May 2026).
    • Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (15 flights), so its score leans on the route's record at this hour.

    Limited track record · 15 flights

    Find Southwest 3906 fares Opens this date on Aviasales

  5. #5 · United 2473

    5:27 PM → 10:23 PM2h 56m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    71%

    chance on time

    On time (history)
    69%
    Cancelled
    0.0%
    Avg arrival delay
    28 min
    • Arrived on time 69% of the time (32 flights, Jun 2025 to May 2026).
    • Never cancelled in 32 scheduled flights.
    • Leaves in this route's least on-time window (3 to 6 PM: 66% on time; 9 AM to noon: 84%).
    • Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.

    Limited track record · 32 flights

    Find United 2473 fares Opens this date on Aviasales

  6. #6 · SkyWest 4774 · sold as United Express, Delta Connection, American Eagle or Alaska

    5:25 PM → 10:29 PM3h 04m nonstop

    Local times, typical schedule. Last flown 2026-04-29.

    70%

    chance on time

    On time (history)
    71%
    Cancelled
    0.7%
    Avg arrival delay
    19 min
    • Arrived on time 71% of the time (303 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (3 to 6 PM: 66% on time; 9 AM to noon: 84%).
    • Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.

    Strong track record · 303 flights

    Find 5:25 PM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines82%

    306 flights · 83% on time as flown · 0.2% cancel

  • Frontier Airlines78%

    126 flights · 79% on time as flown · 0.3% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)73%

    423 flights · 74% on time as flown · 0.8% cancel

  • Allegiant Air68%

    67 flights · 59% on time as flown · 0.8% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • 9 AM to noon84%

    460 flights · avg delay 9 min

  • Noon to 3 PM80%

    54 flights · avg delay 11 min

  • 3 to 6 PM66%

    394 flights · avg delay 34 min

Best day: Tuesday (81%). Worst: Friday (76%).

On time by month

All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.

J
77
F
82
M
84
A
80
M
79
J
70
J
73
A
67
S
77
O
80
N
84
D
86

What delays this route

  • Airline (crew, maintenance, boarding)42%
  • Late-arriving aircraft33%
  • Air traffic control and airport volume20%
  • Severe weather6%

Share of delay minutes by the cause airlines report to the US DOT.

Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure

Finding the most reliable connections from DEN to TYS…

DEN to TYS questions

What time of day is best to fly DEN to TYS?
9 AM to noon: 84% of flights arrived on time, against 66% for departures 3 to 6 PM.
Which airline is most on time from DEN to TYS?
United, with a season-adjusted 82% chance of operating and arriving on time over 306 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
What is the worst month for delays on DEN to TYS?
August (67% on time); the best was December (86%), averaged over Jun 2023 to May 2026.
Is this a prediction for my flight?
No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.

More routes from DEN

Live status: FAA delays and ground stops