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Route on-time record

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

Denver (Denver International Airport) to Columbus (John Glenn Columbus International Airport). 1,765 nonstop flights in Jun 2025 to May 2026, 72% arrived within 15 minutes and 0.7% were cancelled. The most reliable flight number was United 480 at 9:37 AM.

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

DEN → CMH

Denver to Columbus: 1,765 nonstop flights a year

On time (12 months)

72%

Cancelled

0.7%

avg delay 17 min

Best time to leave

Before 9 AM

85% on time vs 57% 6 to 9 PM

Most reliable airline

United

79% chance on time

Check DEN to CMH 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 480

    9:37 AM → 2:32 PM2h 55m nonstop

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

    89%

    chance on time

    On time (history)
    91%
    Cancelled
    0.6%
    Avg arrival delay
    8 min
    • Arrived on time 91% of the time (164 flights, Jun 2025 to May 2026).
    • 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 · 164 flights

    Find United 480 fares Opens this date on Aviasales

  2. #2 · United 1843

    5:45 PM → 10:43 PM2h 58m nonstop

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

    80%

    chance on time

    On time (history)
    82%
    Cancelled
    0.0%
    Avg arrival delay
    13 min
    • Arrived on time 82% of the time (84 flights, Jun 2025 to May 2026).
    • Never cancelled in 85 scheduled flights.
    • Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
    • 52% of its delay minutes came from the plane arriving late from an earlier flight.

    Moderate track record · 84 flights

    Find United 1843 fares Opens this date on Aviasales

  3. #3 · Frontier 1694

    12:54 PM → 5:48 PM2h 49m nonstop

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

    78%

    chance on time

    On time (history)
    79%
    Cancelled
    0.9%
    Avg arrival delay
    16 min
    • Arrived on time 79% of the time (111 flights, Jun 2025 to May 2026).
    • 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 · 111 flights

    Find Frontier 1694 fares Opens this date on Aviasales

  4. #4 · United 281

    5:55 PM → 10:42 PM2h 47m nonstop

    Local times, typical schedule. Last flown 2026-03-28.

    74%

    chance on time

    On time (history)
    73%
    Cancelled
    4.2%
    Avg arrival delay
    12 min
    • Arrived on time 73% of the time (22 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.
    • 53% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (22 flights), so its score leans on the airline's record at this hour.

    Limited track record · 22 flights

    Find United 281 fares Opens this date on Aviasales

  5. #5 · Southwest 3424

    10:25 AM → 3:10 PM2h 45m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    71%

    chance on time

    On time (history)
    73%
    Cancelled
    0.0%
    Avg arrival delay
    17 min
    • Arrived on time 73% of the time (33 flights, Jun 2025 to May 2026).
    • Never cancelled in 33 scheduled flights.
    • 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 (33 flights), so its score leans on the airline's record at this hour.

    Limited track record · 33 flights

    Find Southwest 3424 fares Opens this date on Aviasales

  6. #6 · Southwest 1826

    11:00 AM → 3:40 PM2h 40m nonstop

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

    66%

    chance on time

    On time (history)
    64%
    Cancelled
    0.0%
    Avg arrival delay
    12 min
    • Arrived on time 64% of the time (55 flights, Jun 2025 to May 2026).
    • Never cancelled in 55 scheduled flights.
    • 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 (55 flights), so its score leans on the airline's record at this hour.

    Limited track record · 55 flights

    Find Southwest 1826 fares Opens this date on Aviasales

  7. #7 · Southwest 1982

    4:35 PM → 9:15 PM2h 40m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    56%

    chance on time

    On time (history)
    40%
    Cancelled
    0.0%
    Avg arrival delay
    27 min
    • Arrived on time 40% 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.
    • 71% of its delay minutes came from the plane arriving late from an earlier flight.
    • Short track record (15 flights), so its score leans on the airline's record at this hour.

    Limited track record · 15 flights

    Find Southwest 1982 fares Opens this date on Aviasales

  8. #8 · Southwest 1828

    7:05 PM → 11:45 PM2h 45m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 1413; its record covers all of them.

    51%

    chance on time

    On time (history)
    49%
    Cancelled
    1.1%
    Avg arrival delay
    28 min
    • Arrived on time 49% of the time (87 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (6 to 9 PM: 57% on time; Before 9 AM: 85%).
    • Departs inside DEN's trouble window: 79% of its 174 ground stops and delay programs started between 2 PM and 8 PM.
    • 60% of its delay minutes came from the plane arriving late from an earlier flight.

    Moderate track record · 87 flights

    Find Southwest 1828 fares Opens this date on Aviasales

  9. #9 · Southwest 1827

    3:10 PM → 7:50 PM2h 40m nonstop

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

    50%

    chance on time

    On time (history)
    37%
    Cancelled
    0.0%
    Avg arrival delay
    25 min
    • Arrived on time 37% of the time (30 flights, Jun 2025 to May 2026).
    • Never cancelled in 30 scheduled flights.
    • 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 (30 flights), so its score leans on the airline's record at this hour.

    Limited track record · 30 flights

    Find Southwest 1827 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines79%

    729 flights · 80% on time as flown · 0.7% cancel

  • Frontier Airlines76%

    113 flights · 79% on time as flown · 0.8% cancel

  • Southwest Airlines65%

    923 flights · 65% on time as flown · 0.8% cancel

On time by departure time

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

  • Before 9 AM85%

    61 flights · avg delay 6 min

  • 9 AM to noon82%

    671 flights · avg delay 10 min

  • Noon to 3 PM74%

    200 flights · avg delay 14 min

  • 3 to 6 PM66%

    531 flights · avg delay 21 min

  • 6 to 9 PM57%

    302 flights · avg delay 29 min

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
72
F
75
M
74
A
77
M
67
J
62
J
64
A
70
S
76
O
82
N
84
D
77

What delays this route

  • Late-arriving aircraft53%
  • Airline (crew, maintenance, boarding)29%
  • Air traffic control and airport volume17%
  • Severe weather1%

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

DEN to CMH questions

What time of day is best to fly DEN to CMH?
Before 9 AM: 85% of flights arrived on time, against 57% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
Which airline is most on time from DEN to CMH?
United, with a season-adjusted 79% chance of operating and arriving on time over 729 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 CMH?
June (62% on time); the best was November (84%), 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