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Route on-time record

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

Oklahoma City (OKC Will Rogers World Airport) to Houston (George Bush Intercontinental Airport). 1,476 nonstop flights in Jun 2025 to May 2026, 83% arrived within 15 minutes and 1.4% were cancelled. The most reliable flight number was SkyWest 5453 at 5:00 AM.

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

OKC → IAH

Oklahoma City to Houston: 1,476 nonstop flights a year

On time (12 months)

83%

Cancelled

1.4%

avg delay 14 min

Best time to leave

9 AM to noon

89% on time vs 66% 3 to 6 PM

Most reliable airline

SkyWest

83% chance on time

Check OKC to IAH fares

Lowest nonstop fare seen in the next two months: $240 (United 6258 on 2026-10-24). 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 · SkyWest 5453 · sold as United Express, Delta Connection, American Eagle or Alaska

    5:00 AM → 6:40 AM1h 40m nonstop

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

    87%

    chance on time

    On time (history)
    89%
    Cancelled
    2.4%
    Avg arrival delay
    10 min
    • Arrived on time 89% of the time (203 flights, Jun 2025 to May 2026).

    Strong track record · 203 flights

    Find 5:00 AM flight fares Opens this date on Aviasales

  2. #2 · United 1999

    9:15 AM → 10:55 AM1h 40m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    85%

    chance on time

    On time (history)
    85%
    Cancelled
    0.0%
    Avg arrival delay
    12 min
    • Arrived on time 85% of the time (20 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (9 AM to noon: 89% on time; 3 to 6 PM: 66%).
    • Short track record (20 flights), so its score leans on the airline's record at this hour.

    Limited track record · 20 flights

    Find United 1999 fares Opens this date on Aviasales

  3. #3 · SkyWest 5531 · sold as United Express, Delta Connection, American Eagle or Alaska

    1:55 PM → 3:40 PM1h 45m nonstop

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

    83%

    chance on time

    On time (history)
    83%
    Cancelled
    0.6%
    Avg arrival delay
    14 min
    • Arrived on time 83% of the time (325 flights, Jun 2025 to May 2026).
    • Lands inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.

    Strong track record · 325 flights

    Find 1:55 PM flight fares Opens this date on Aviasales

  4. #4 · United 2090

    8:40 AM → 10:20 AM1h 40m nonstop

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

    83%

    chance on time

    On time (history)
    87%
    Cancelled
    1.8%
    Avg arrival delay
    19 min
    • Arrived on time 87% of the time (54 flights, Jun 2025 to May 2026).
    • Short track record (54 flights), so its score leans on the airline's record at this hour.

    Limited track record · 54 flights

    Find United 2090 fares Opens this date on Aviasales

  5. #5 · SkyWest 5503 · sold as United Express, Delta Connection, American Eagle or Alaska

    7:05 AM → 8:48 AM1h 43m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    81%

    chance on time

    On time (history)
    81%
    Cancelled
    2.6%
    Avg arrival delay
    14 min
    • Arrived on time 81% of the time (75 flights, Jun 2025 to May 2026).

    Moderate track record · 75 flights

    Find 7:05 AM flight fares Opens this date on Aviasales

  6. #6 · United 1127

    7:00 AM → 8:28 AM1h 28m nonstop

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

    77%

    chance on time

    On time (history)
    55%
    Cancelled
    0.0%
    Avg arrival delay
    18 min
    • Arrived on time 55% of the time (11 flights, Jun 2025 to May 2026).
    • Short track record (11 flights), so its score leans on the airline's record at this hour.

    Limited track record · 11 flights

    Find United 1127 fares Opens this date on Aviasales

  7. #7 · SkyWest 5567 · sold as United Express, Delta Connection, American Eagle or Alaska

    5:10 PM → 6:55 PM1h 45m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    70%

    chance on time

    On time (history)
    60%
    Cancelled
    2.3%
    Avg arrival delay
    36 min
    • Arrived on time 60% of the time (42 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: 89%).
    • Short track record (42 flights), so its score leans on the airline's record at this hour.

    Limited track record · 42 flights

    Find 5:10 PM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)83%

    1,194 flights · 83% on time as flown · 1.4% cancel

  • United Airlines80%

    282 flights · 82% on time as flown · 1.2% cancel

On time by departure time

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

  • Before 9 AM87%

    600 flights · avg delay 12 min

  • 9 AM to noon89%

    196 flights · avg delay 9 min

  • Noon to 3 PM84%

    463 flights · avg delay 14 min

  • 3 to 6 PM66%

    188 flights · avg delay 28 min

Best day: Wednesday (85%). Worst: Friday (81%).

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
83
F
88
M
86
A
82
M
74
J
74
J
81
A
83
S
94
O
89
N
80
D
84

What delays this route

  • Airline (crew, maintenance, boarding)42%
  • Air traffic control and airport volume26%
  • Late-arriving aircraft24%
  • Severe weather8%

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

OKC to IAH questions

What time of day is best to fly OKC to IAH?
9 AM to noon: 89% of flights arrived on time, against 66% for departures 3 to 6 PM.
Which airline is most on time from OKC to IAH?
SkyWest, with a season-adjusted 83% chance of operating and arriving on time over 1,194 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 OKC to IAH?
June (74% on time); the best was September (94%), 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 OKC

Live status: FAA delays and ground stops