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Route on-time record

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

Detroit (Detroit Metropolitan Wayne County Airport) to Houston (George Bush Intercontinental Airport). 2,136 nonstop flights in Jun 2025 to May 2026, 79% arrived within 15 minutes and 1.3% were cancelled. The most reliable flight number was United 1798 at 9:00 AM.

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

DTW → IAH

Detroit to Houston: 2,136 nonstop flights a year

On time (12 months)

79%

Cancelled

1.3%

avg delay 14 min

Best time to leave

Noon to 3 PM

86% on time vs 70% after 9 PM

Most reliable airline

United

83% chance on time

Check DTW to IAH fares

Lowest nonstop fare seen in the next two months: $92 (Frontier 1957 on 2026-10-31). 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 1798

    9:00 AM → 11:15 AM3h 15m nonstop

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

    89%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    6 min
    • Arrived on time 91% of the time (126 flights, Jun 2025 to May 2026).
    • Never cancelled in 126 scheduled flights.
    • Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).

    Moderate track record · 126 flights

    Find United 1798 fares Opens this date on Aviasales

  2. #2 · Delta 1043

    8:35 AM → 10:39 AM3h 09m nonstop

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

    87%

    chance on time

    On time (history)
    87%
    Cancelled
    1.5%
    Avg arrival delay
    7 min
    • Arrived on time 87% of the time (131 flights, Jun 2025 to May 2026).
    • Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).

    Moderate track record · 131 flights

    Find Delta 1043 fares Opens this date on Aviasales

  3. #3 · Delta 2158

    8:25 AM → 10:44 AM3h 19m nonstop

    Local times, typical schedule. Last flown 2026-04-12.

    86%

    chance on time

    On time (history)
    89%
    Cancelled
    2.8%
    Avg arrival delay
    8 min
    • Arrived on time 89% of the time (35 flights, Jun 2025 to May 2026).
    • Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
    • Short track record (35 flights), so its score leans on the airline's record at this hour.

    Limited track record · 35 flights

    Find Delta 2158 fares Opens this date on Aviasales

  4. #4 · Delta 1307

    12:47 PM → 3:03 PM3h 08m nonstop

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

    85%

    chance on time

    On time (history)
    86%
    Cancelled
    0.8%
    Avg arrival delay
    9 min
    • Arrived on time 86% of the time (246 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Noon to 3 PM: 86% on time; After 9 PM: 70%).
    • Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
    • Lands inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.

    Strong track record · 246 flights

    Find Delta 1307 fares Opens this date on Aviasales

  5. #5 · United 1114

    6:15 AM → 8:11 AM2h 56m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 2034; its record covers all of them.

    85%

    chance on time

    On time (history)
    85%
    Cancelled
    2.9%
    Avg arrival delay
    5 min
    • Arrived on time 85% of the time (33 flights, Jun 2025 to May 2026).
    • Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 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 United 1114 fares Opens this date on Aviasales

  6. #6 · Delta 1633

    8:48 PM → 10:59 PM3h 06m nonstop

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

    77%

    chance on time

    On time (history)
    78%
    Cancelled
    1.7%
    Avg arrival delay
    14 min
    • Arrived on time 78% of the time (355 flights, Jun 2025 to May 2026).
    • Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).

    Strong track record · 355 flights

    Find Delta 1633 fares Opens this date on Aviasales

  7. #7 · Frontier 1957

    8:52 AM → 11:11 AM3h 19m nonstop

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

    71%

    chance on time

    On time (history)
    65%
    Cancelled
    1.1%
    Avg arrival delay
    23 min
    • Arrived on time 65% of the time (89 flights, Jun 2025 to May 2026).
    • Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).

    Moderate track record · 89 flights

    Find Frontier 1957 fares Opens this date on Aviasales

  8. #8 · Delta 1718

    4:18 PM → 6:34 PM3h 16m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Delta 1529; its record covers all of them.

    70%

    chance on time

    On time (history)
    70%
    Cancelled
    0.6%
    Avg arrival delay
    21 min
    • Arrived on time 70% of the time (322 flights, Jun 2025 to May 2026).
    • Departs inside DTW's trouble window: 64% of its 28 ground stops and delay programs started between 1 PM and 7 PM.

    Strong track record · 322 flights

    Find Delta 1718 fares Opens this date on Aviasales

  9. #9 · Spirit 2023

    8:17 PM → 10:26 PM3h 09m nonstop

    Local times, typical schedule. Last flown 2026-04-13.

    66%

    chance on time

    On time (history)
    65%
    Cancelled
    3.5%
    Avg arrival delay
    40 min
    • Arrived on time 65% of the time (82 flights, Jun 2025 to May 2026).
    • Cancelled 3.5% of the time (3 of 85).
    • Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).

    Moderate track record · 82 flights

    Find Spirit 2023 fares Opens this date on Aviasales

  10. #10 · Spirit 254

    9:18 PM → 11:22 PM3h 04m nonstop

    Local times, typical schedule. Last flown 2026-04-30.

    64%

    chance on time

    On time (history)
    50%
    Cancelled
    6.7%
    Avg arrival delay
    33 min
    • Arrived on time 50% of the time (14 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (After 9 PM: 70% on time; Noon to 3 PM: 86%).
    • Departs outside DTW's trouble window (1 PM to 7 PM, when 64% of its 28 ground stops and delay programs started).
    • 63% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 14 flights

    Find Spirit 254 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines83%

    281 flights · 86% on time as flown · 1.6% cancel

  • Delta Air Lines79%

    1,321 flights · 80% on time as flown · 1.0% cancel

  • Spirit Airlines75%

    441 flights · 77% on time as flown · 1.7% cancel

  • Frontier Airlines72%

    90 flights · 65% on time as flown · 1.2% cancel

On time by departure time

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

  • Before 9 AM84%

    784 flights · avg delay 9 min

  • 9 AM to noon85%

    105 flights · avg delay 11 min

  • Noon to 3 PM86%

    340 flights · avg delay 10 min

  • 3 to 6 PM72%

    448 flights · avg delay 20 min

  • 6 to 9 PM71%

    344 flights · avg delay 16 min

  • After 9 PM70%

    115 flights · avg delay 35 min

Best day: Tuesday (82%). 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
73
F
83
M
81
A
79
M
69
J
74
J
71
A
80
S
85
O
88
N
85
D
78

What delays this route

  • Airline (crew, maintenance, boarding)45%
  • Air traffic control and airport volume35%
  • Late-arriving aircraft18%
  • Severe weather2%

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

DTW to IAH questions

What time of day is best to fly DTW to IAH?
Noon to 3 PM: 86% of flights arrived on time, against 70% for departures after 9 PM.
Which airline is most on time from DTW to IAH?
United, with a season-adjusted 83% chance of operating and arriving on time over 281 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 DTW to IAH?
May (69% on time); the best was October (88%), 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 DTW

Live status: FAA delays and ground stops