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Route on-time record

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

Houston (George Bush Intercontinental Airport) to Columbus (John Glenn Columbus International Airport). 566 nonstop flights in Jun 2025 to May 2026, 76% arrived within 15 minutes and 0.9% were cancelled. The most reliable flight number was United 722 at 12:15 PM.

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IAH → CMH

Houston to Columbus: 566 nonstop flights a year

On time (12 months)

76%

Cancelled

0.9%

avg delay 19 min

Best time to leave

No clear winner

Most reliable airline

United

76% chance on time

Check IAH 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 722

    12:15 PM → 4:02 PM2h 47m nonstop

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

    80%

    chance on time

    On time (history)
    81%
    Cancelled
    0.0%
    Avg arrival delay
    21 min
    • Arrived on time 81% of the time (123 flights, Jun 2025 to May 2026).
    • Never cancelled in 123 scheduled flights.
    • Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.

    Moderate track record · 123 flights

    Find United 722 fares Opens this date on Aviasales

  2. #2 · United 2086

    6:22 PM → 10:03 PM2h 41m nonstop

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

    75%

    chance on time

    On time (history)
    75%
    Cancelled
    1.4%
    Avg arrival delay
    15 min
    • Arrived on time 75% of the time (344 flights, Jun 2025 to May 2026).
    • Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
    • 51% of its delay minutes came from the plane arriving late from an earlier flight.

    Strong track record · 344 flights

    Find United 2086 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines76%

    561 flights · 76% on time as flown · 0.9% cancel

On time by departure time

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

  • Noon to 3 PM78%

    215 flights · avg delay 26 min

  • 6 to 9 PM75%

    349 flights · avg delay 15 min

Best day: Tuesday (79%). Worst: Friday (70%).

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
84
F
80
M
83
A
73
M
62
J
57
J
63
A
77
S
83
O
79
N
85
D
77

What delays this route

  • Late-arriving aircraft49%
  • Airline (crew, maintenance, boarding)29%
  • Air traffic control and airport volume15%
  • Severe weather7%

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 IAH to CMH…

IAH to CMH questions

Which airline is most on time from IAH to CMH?
United, with a season-adjusted 76% chance of operating and arriving on time over 561 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 IAH to CMH?
June (57% on time); the best was November (85%), 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 IAH

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Live status: FAA delays and ground stops