Route on-time record
IAH to RSW: most on-time flights and the best time to fly
Houston (George Bush Intercontinental Airport) to Fort Myers (Southwest Florida International Airport). 881 nonstop flights in Jun 2025 to May 2026, 84% arrived within 15 minutes and 0.2% were cancelled. The most reliable flight number was United 2494 at 7:20 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
IAH → RSW
Houston to Fort Myers: 881 nonstop flights a year
On time (12 months)
84%
Cancelled
0.2%
avg delay 11 min
Best time to leave
Before 9 AM
94% on time vs 78% 6 to 9 PM
Most reliable airline
United
84% chance on time
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 · United 2494
7:20 AM → 10:47 AM2h 27m nonstop
Local times, typical schedule. Last flown 2026-05-20.
91%
chance on time
- On time (history)
- 90%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 90% of the time (21 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 94% on time; 6 to 9 PM: 78%).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Limited track record · 21 flights
Find United 2494 fares Opens this date on Aviasales#2 · United 1361
12:24 PM → 3:51 PM2h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 86% of the time (283 flights, Jun 2025 to May 2026).
- Never cancelled in 286 scheduled flights.
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
Strong track record · 283 flights
Find United 1361 fares Opens this date on Aviasales#3 · United 2765
6:33 PM → 9:59 PM2h 26m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 8 min
- Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 78% on time; Before 9 AM: 94%).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Limited track record · 11 flights
Find United 2765 fares Opens this date on Aviasales#4 · United 2062
7:14 PM → 10:41 PM2h 27m nonstop
Local times, typical schedule. Last flown 2026-05-20.
81%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 83% of the time (18 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 78% on time; Before 9 AM: 94%).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Limited track record · 18 flights
Find United 2062 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines84%
881 flights · 84% on time as flown · 0.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM94%
197 flights · avg delay 3 min
- Noon to 3 PM81%
365 flights · avg delay 13 min
- 3 to 6 PM94%
53 flights · avg delay 5 min
- 6 to 9 PM78%
266 flights · avg delay 14 min
Best day: Tuesday (81%). Worst: Sunday (73%).
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.
What delays this route
- Late-arriving aircraft38%
- Airline (crew, maintenance, boarding)33%
- Air traffic control and airport volume21%
- 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
IAH to RSW questions
- What time of day is best to fly IAH to RSW?
- Before 9 AM: 94% of flights arrived on time, against 78% for departures 6 to 9 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 RSW?
- United, with a season-adjusted 84% chance of operating and arriving on time over 881 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 RSW?
- July (62% on time); the best was February (87%), 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 IAH
- RSW to IAH (return)
- IAH to ORD 75%
- IAH to DFW 75%
- IAH to LAX 83%
- IAH to ATL 77%
- IAH to DEN 81%
- IAH to LGA 72%
- IAH to EWR 74%
- IAH to MIA 78%
- IAH to MCO 81%
- IAH to SFO 79%
- IAH to LAS 82%
- IAH to DCA 75%
Most on-time flights from IAH on every route →
Live status: FAA delays and ground stops