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Route on-time record

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

New Orleans (Louis Armstrong New Orleans International Airport) to Houston (George Bush Intercontinental Airport). 2,997 nonstop flights in Jun 2025 to May 2026, 82% arrived within 15 minutes and 0.7% were cancelled. The most reliable flight number was United 2744 at 5:00 AM.

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

MSY → IAH

New Orleans to Houston: 2,997 nonstop flights a year

On time (12 months)

82%

Cancelled

0.7%

avg delay 15 min

Best time to leave

9 AM to noon

89% on time vs 71% 3 to 6 PM

Most reliable airline

United

82% chance on time

Check MSY to IAH 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 2744

    5:00 AM → 6:26 AM1h 19m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 1594; its record covers all of them.

    93%

    chance on time

    On time (history)
    94%
    Cancelled
    0.7%
    Avg arrival delay
    3 min
    • Arrived on time 94% of the time (277 flights, Jun 2025 to May 2026).

    Strong track record · 277 flights

    Find United 2744 fares Opens this date on Aviasales

  2. #2 · United 2105

    9:49 AM → 11:15 AM1h 26m nonstop

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

    90%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    8 min
    • Arrived on time 91% of the time (245 flights, Jun 2025 to May 2026).
    • Never cancelled in 245 scheduled flights.
    • Leaves in this route's most on-time window (9 AM to noon: 89% on time; 3 to 6 PM: 71%).

    Strong track record · 245 flights

    Find United 2105 fares Opens this date on Aviasales

  3. #3 · United 2296

    2:14 PM → 3:40 PM1h 26m nonstop

    Local times, typical schedule. Last flown 2026-05-30.

    87%

    chance on time

    On time (history)
    89%
    Cancelled
    0.0%
    Avg arrival delay
    14 min
    • Arrived on time 89% of the time (265 flights, Jun 2025 to May 2026).
    • Never cancelled in 265 scheduled flights.
    • Lands inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.

    Strong track record · 265 flights

    Find United 2296 fares Opens this date on Aviasales

  4. #4 · United 1470

    11:55 AM → 1:21 PM1h 26m nonstop

    Local times, typical schedule. Last flown 2026-03-27.

    85%

    chance on time

    On time (history)
    85%
    Cancelled
    0.0%
    Avg arrival delay
    28 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: 71%).
    • Lands inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
    • Short track record (20 flights), so its score leans on the airline's record at this hour.

    Limited track record · 20 flights

    Find United 1470 fares Opens this date on Aviasales

  5. #5 · United 1613

    12:01 PM → 1:27 PM1h 26m nonstop

    Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as United 2027; its record covers all of them.

    85%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 88% of the time (49 flights, Jun 2025 to May 2026).
    • Never cancelled in 49 scheduled flights.
    • Lands inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
    • Short track record (49 flights), so its score leans on the airline's record at this hour.

    Limited track record · 49 flights

    Find United 1613 fares Opens this date on Aviasales

  6. #6 · United 2228

    7:23 PM → 8:50 PM1h 27m nonstop

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

    84%

    chance on time

    On time (history)
    86%
    Cancelled
    0.0%
    Avg arrival delay
    11 min
    • Arrived on time 86% of the time (191 flights, Jun 2025 to May 2026).
    • Never cancelled in 191 scheduled flights.
    • 60% of its delay minutes came from the plane arriving late from an earlier flight.

    Moderate track record · 191 flights

    Find United 2228 fares Opens this date on Aviasales

  7. #7 · United 618

    8:30 PM → 9:57 PM1h 27m nonstop

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

    84%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    17 min
    • Arrived on time 88% of the time (32 flights, Jun 2025 to May 2026).
    • Never cancelled in 32 scheduled flights.
    • Short track record (32 flights), so its score leans on the airline's record at this hour.

    Limited track record · 32 flights

    Find United 618 fares Opens this date on Aviasales

  8. #8 · United 2253

    12:07 PM → 1:26 PM1h 19m nonstop

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

    81%

    chance on time

    On time (history)
    81%
    Cancelled
    1.1%
    Avg arrival delay
    14 min
    • Arrived on time 81% of the time (186 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.

    Moderate track record · 186 flights

    Find United 2253 fares Opens this date on Aviasales

  9. #9 · United 1532

    3:48 PM → 5:14 PM1h 26m nonstop

    Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as United 1654; its record covers all of them.

    80%

    chance on time

    On time (history)
    82%
    Cancelled
    0.0%
    Avg arrival delay
    24 min
    • Arrived on time 82% of the time (66 flights, Jun 2025 to May 2026).
    • Never cancelled in 66 scheduled flights.
    • Leaves in this route's least on-time window (3 to 6 PM: 71% on time; 9 AM to noon: 89%).
    • Lands inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.

    Moderate track record · 66 flights

    Find United 1532 fares Opens this date on Aviasales

  10. #10 · United 2646

    7:09 PM → 8:34 PM1h 25m nonstop

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

    80%

    chance on time

    On time (history)
    79%
    Cancelled
    0.0%
    Avg arrival delay
    33 min
    • Arrived on time 79% of the time (24 flights, Jun 2025 to May 2026).
    • Short track record (24 flights), so its score leans on the airline's record at this hour.

    Limited track record · 24 flights

    Find United 2646 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines82%

    2,800 flights · 82% on time as flown · 0.6% cancel

  • Spirit Airlines78%

    166 flights · 78% on time as flown · 1.3% cancel

On time by departure time

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

  • Before 9 AM87%

    708 flights · avg delay 7 min

  • 9 AM to noon89%

    535 flights · avg delay 11 min

  • Noon to 3 PM84%

    511 flights · avg delay 16 min

  • 3 to 6 PM71%

    764 flights · avg delay 22 min

  • 6 to 9 PM79%

    401 flights · avg delay 18 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
86
F
90
M
84
A
87
M
75
J
75
J
71
A
85
S
87
O
87
N
85
D
87

What delays this route

  • Air traffic control and airport volume36%
  • Late-arriving aircraft34%
  • Airline (crew, maintenance, boarding)21%
  • 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

MSY to IAH questions

What time of day is best to fly MSY to IAH?
9 AM to noon: 89% of flights arrived on time, against 71% for departures 3 to 6 PM.
Which airline is most on time from MSY to IAH?
United, with a season-adjusted 82% chance of operating and arriving on time over 2,800 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 MSY to IAH?
July (71% on time); the best was February (90%), 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 MSY

Live status: FAA delays and ground stops