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Route on-time record

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

Fort Myers (Southwest Florida International Airport) to Houston (George Bush Intercontinental Airport). 882 nonstop flights in Jun 2025 to May 2026, 87% arrived within 15 minutes and 0.5% were cancelled. The most reliable flight number was United 1246 at 11:49 AM.

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RSW → IAH

Fort Myers to Houston: 882 nonstop flights a year

On time (12 months)

87%

Cancelled

0.5%

avg delay 13 min

Best time to leave

9 AM to noon

95% on time vs 75% 3 to 6 PM

Most reliable airline

United

86% chance on time

Check RSW 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 1246

    11:49 AM → 1:36 PM2h 47m nonstop

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

    94%

    chance on time

    On time (history)
    95%
    Cancelled
    0.0%
    Avg arrival delay
    10 min
    • Arrived on time 95% of the time (21 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (9 AM to noon: 95% on time; 3 to 6 PM: 75%).
    • Lands inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.

    Limited track record · 21 flights

    Find United 1246 fares Opens this date on Aviasales

  2. #2 · United 1882

    6:45 AM → 8:29 AM2h 44m nonstop

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

    94%

    chance on time

    On time (history)
    100%
    Cancelled
    0.0%
    Avg arrival delay
    0 min
    • Arrived on time 100% of the time (21 flights, Jun 2025 to May 2026).

    Limited track record · 21 flights

    Find United 1882 fares Opens this date on Aviasales

  3. #3 · United 2281

    7:00 AM → 8:29 AM2h 29m nonstop

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

    86%

    chance on time

    On time (history)
    73%
    Cancelled
    0.0%
    Avg arrival delay
    13 min
    • Arrived on time 73% of the time (11 flights, Jun 2025 to May 2026).

    Limited track record · 11 flights

    Find United 2281 fares Opens this date on Aviasales

  4. #4 · United 2833

    5:00 PM → 6:40 PM2h 40m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 2388; its record covers all of them.

    77%

    chance on time

    On time (history)
    81%
    Cancelled
    0.6%
    Avg arrival delay
    22 min
    • Arrived on time 81% of the time (155 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (3 to 6 PM: 75% on time; 9 AM to noon: 95%).

    Moderate track record · 155 flights

    Find United 2833 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines86%

    882 flights · 87% on time as flown · 0.5% cancel

On time by departure time

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

  • Before 9 AM94%

    247 flights · avg delay 3 min

  • 9 AM to noon95%

    279 flights · avg delay 7 min

  • 3 to 6 PM75%

    356 flights · avg delay 24 min

Best day: Tuesday (86%). Worst: Sunday (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
90
F
87
M
82
A
85
M
80
J
67
J
66
A
78
S
75
O
90
N
90
D
84

What delays this route

  • Late-arriving aircraft36%
  • Air traffic control and airport volume36%
  • Airline (crew, maintenance, boarding)19%
  • Severe weather9%

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 RSW to IAH…

RSW to IAH questions

What time of day is best to fly RSW to IAH?
9 AM to noon: 95% of flights arrived on time, against 75% for departures 3 to 6 PM.
Which airline is most on time from RSW to IAH?
United, with a season-adjusted 86% chance of operating and arriving on time over 882 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 RSW to IAH?
July (66% on time); the best was October (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.

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Live status: FAA delays and ground stops