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Route on-time record

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

Houston (George Bush Intercontinental Airport) to Cleveland (Cleveland Hopkins International Airport). 828 nonstop flights in Jun 2025 to May 2026, 85% arrived within 15 minutes and 0.6% were cancelled. The most reliable flight number was United 544 at 7:35 AM.

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

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IAH → CLE

Houston to Cleveland: 828 nonstop flights a year

On time (12 months)

85%

Cancelled

0.6%

avg delay 10 min

Best time to leave

Before 9 AM

92% on time vs 73% 3 to 6 PM

Most reliable airline

United

84% chance on time

Check IAH to CLE fares

Lowest nonstop fare seen in the next two months: $480 (United 544 on 2026-10-26). 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 544

    7:35 AM → 11:26 AM2h 51m nonstop

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

    88%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    6 min
    • Arrived on time 88% of the time (361 flights, Jun 2025 to May 2026).
    • Never cancelled in 362 scheduled flights.
    • Leaves in this route's most on-time window (Before 9 AM: 92% on time; 3 to 6 PM: 73%).
    • Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).

    Strong track record · 361 flights

    Find United 544 fares Opens this date on Aviasales

  2. #2 · United 1934

    6:05 PM → 9:55 PM2h 50m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 744; its record covers all of them.

    82%

    chance on time

    On time (history)
    82%
    Cancelled
    1.1%
    Avg arrival delay
    13 min
    • Arrived on time 82% of the time (459 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).

    Strong track record · 459 flights

    Find United 1934 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines84%

    828 flights · 85% on time as flown · 0.6% cancel

On time by departure time

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

  • Before 9 AM92%

    361 flights · avg delay 4 min

  • Noon to 3 PM88%

    32 flights · avg delay 11 min

  • 3 to 6 PM73%

    79 flights · avg delay 17 min

  • 6 to 9 PM79%

    356 flights · avg delay 14 min

Best day: Thursday (85%). Worst: Monday (79%).

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
88
F
92
M
80
A
86
M
78
J
68
J
66
A
80
S
86
O
90
N
90
D
86

What delays this route

  • Late-arriving aircraft40%
  • Airline (crew, maintenance, boarding)39%
  • Severe weather11%
  • Air traffic control and airport volume10%

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 CLE…

IAH to CLE questions

What time of day is best to fly IAH to CLE?
Before 9 AM: 92% of flights arrived on time, against 73% for departures 3 to 6 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 IAH to CLE?
United, with a season-adjusted 84% chance of operating and arriving on time over 828 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 CLE?
July (66% on time); the best was February (92%), 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.

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Live status: FAA delays and ground stops