Route on-time record
IAH to FLL: most on-time flights and the best time to fly
Houston (George Bush Intercontinental Airport) to Fort Lauderdale (Fort Lauderdale Hollywood International Airport). 2,840 nonstop flights in Jun 2025 to May 2026, 80% arrived within 15 minutes and 1.2% were cancelled. The most reliable flight number was United 2261 at 7:20 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
IAH → FLL
Houston to Fort Lauderdale: 2,840 nonstop flights a year
On time (12 months)
80%
Cancelled
1.2%
avg delay 15 min
Best time to leave
Noon to 3 PM
84% on time vs 74% 6 to 9 PM
Most reliable airline
United
84% chance on time
Lowest nonstop fare seen in the next two months: $36 (Frontier 1496 on 2026-11-10). 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 2261
7:20 AM → 10:55 AM2h 35m nonstop
Local times, typical schedule. Last flown 2026-05-31.
94%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.5%
- Avg arrival delay
- 4 min
- Arrived on time 95% of the time (198 flights, Jun 2025 to May 2026).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Moderate track record · 198 flights
Find United 2261 fares Opens this date on Aviasales#2 · United 1982
12:04 PM → 3:40 PM2h 36m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 89% of the time (85 flights, Jun 2025 to May 2026).
- Never cancelled in 85 scheduled flights.
- Leaves in this route's most on-time window (Noon to 3 PM: 84% on time; 6 to 9 PM: 74%).
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
Moderate track record · 85 flights
Find United 1982 fares Opens this date on Aviasales#3 · United 1318
12:10 PM → 3:45 PM2h 35m nonstop
Local times, typical schedule. Last flown 2026-03-28.
87%
chance on time
- On time (history)
- 82%
- Cancelled
- 4.2%
- Avg arrival delay
- 8 min
- Arrived on time 82% of the time (22 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Noon to 3 PM: 84% on time; 6 to 9 PM: 74%).
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
- Lands inside FLL's trouble window: 70% of its 20 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 22 flights
Find United 1318 fares Opens this date on Aviasales#4 · United 277
4:50 PM → 8:26 PM2h 36m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 88%
- Cancelled
- 1.0%
- Avg arrival delay
- 8 min
- Arrived on time 88% of the time (208 flights, Jun 2025 to May 2026).
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
Strong track record · 208 flights
Find United 277 fares Opens this date on Aviasales#5 · United 2135
2:20 PM → 5:55 PM2h 35m nonstop
Local times, typical schedule. Last flown 2026-05-20.
85%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.6%
- Avg arrival delay
- 12 min
- Arrived on time 85% of the time (164 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Noon to 3 PM: 84% on time; 6 to 9 PM: 74%).
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
- Lands inside FLL's trouble window: 70% of its 20 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 164 flights
Find United 2135 fares Opens this date on Aviasales#6 · United 2670
10:02 AM → 1:38 PM2h 36m nonstop
Local times, typical schedule. Last flown 2026-04-29.
81%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.0%
- Avg arrival delay
- 21 min
- Arrived on time 77% of the time (107 flights, Jun 2025 to May 2026).
- Never cancelled in 108 scheduled flights.
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
- Lands inside FLL's trouble window: 70% of its 20 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 107 flights
Find United 2670 fares Opens this date on Aviasales#7 · United 1956
6:50 PM → 10:26 PM2h 36m nonstop
Local times, typical schedule. Last flown 2026-05-30.
80%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.7%
- Avg arrival delay
- 16 min
- Arrived on time 80% of the time (146 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 74% on time; Noon to 3 PM: 84%).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Moderate track record · 146 flights
Find United 1956 fares Opens this date on Aviasales#8 · Spirit 2840
6:00 AM → 9:25 AM2h 25m nonstop
Local times, typical schedule. Last flown 2026-05-01.
74%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 5 min
- Arrived on time 88% of the time (17 flights, Jun 2025 to May 2026).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
- Short track record (17 flights), so its score leans on the airline's record at this hour.
Limited track record · 17 flights
Find Spirit 2840 fares Opens this date on Aviasales#9 · Spirit 2231
12:16 PM → 3:45 PM2h 29m nonstop
Local times, typical schedule. Last flown 2026-05-01.
70%
chance on time
- On time (history)
- 56%
- Cancelled
- 0.0%
- Avg arrival delay
- 37 min
- Arrived on time 56% of the time (16 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Noon to 3 PM: 84% on time; 6 to 9 PM: 74%).
- Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
- Lands inside FLL's trouble window: 70% of its 20 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 16 flights
Find Spirit 2231 fares Opens this date on Aviasales#10 · Spirit 1250
5:45 AM → 9:00 AM2h 15m nonstop
Local times, typical schedule. Last flown 2026-04-14.
68%
chance on time
- On time (history)
- 70%
- Cancelled
- 7.2%
- Avg arrival delay
- 15 min
- Arrived on time 70% of the time (90 flights, Jun 2025 to May 2026).
- Cancelled 7.2% of the time (7 of 97).
- Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).
Moderate track record · 90 flights
Find Spirit 1250 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines84%
1,802 flights · 85% on time as flown · 0.8% cancel
- Spirit Airlines70%
954 flights · 71% on time as flown · 1.6% cancel
- Frontier Airlines68%
84 flights · 60% on time as flown · 2.5% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM84%
801 flights · avg delay 11 min
- 9 AM to noon78%
470 flights · avg delay 15 min
- Noon to 3 PM84%
573 flights · avg delay 11 min
- 3 to 6 PM75%
428 flights · avg delay 18 min
- 6 to 9 PM74%
568 flights · avg delay 22 min
Best day: Tuesday (84%). Worst: Sunday (71%).
Smarter routing
Nearby airports that run more on time
IAH → PBI 82% chance on time
George Bush Intercontinental Airport to Palm Beach International Airport · 432 flights a year · 42 mi from your airports · yours: 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.
What delays this route
- Airline (crew, maintenance, boarding)34%
- Air traffic control and airport volume32%
- Late-arriving aircraft29%
- Severe weather5%
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 FLL questions
- What time of day is best to fly IAH to FLL?
- Noon to 3 PM: 84% of flights arrived on time, against 74% for departures 6 to 9 PM.
- Which airline is most on time from IAH to FLL?
- United, with a season-adjusted 84% chance of operating and arriving on time over 1,802 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 FLL?
- July (64% on time); the best was October (85%), 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
- FLL 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 MIA 78%
- IAH to EWR 74%
- IAH to MCO 81%
- IAH to SFO 79%
- IAH to LAS 82%
- IAH to DCA 75%
Live status: FAA delays and ground stops