Route on-time record
FLL to IAH: most on-time flights and the best time to fly
Fort Lauderdale (Fort Lauderdale Hollywood International Airport) to Houston (George Bush Intercontinental Airport). 2,836 nonstop flights in Jun 2025 to May 2026, 82% arrived within 15 minutes and 1.1% were cancelled. The most reliable flight number was United 2314 at 6:15 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
FLL → IAH
Fort Lauderdale to Houston: 2,836 nonstop flights a year
On time (12 months)
82%
Cancelled
1.1%
avg delay 15 min
Best time to leave
Before 9 AM
95% on time vs 66% after 9 PM
Most reliable airline
United
87% chance on time
Lowest nonstop fare seen in the next two months: $37 (Frontier 1495 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 2314
6:15 AM → 8:14 AM2h 59m nonstop
Local times, typical schedule. Last flown 2026-05-31.
97%
chance on time
- On time (history)
- 98%
- Cancelled
- 1.0%
- Avg arrival delay
- 2 min
- Arrived on time 98% of the time (206 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; After 9 PM: 66%).
- Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 ground stops and delay programs started).
Strong track record · 206 flights
Find United 2314 fares Opens this date on Aviasales#2 · United 699
11:03 AM → 1:06 PM3h 03m nonstop
Local times, typical schedule. Last flown 2026-05-20.
95%
chance on time
- On time (history)
- 96%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 96% of the time (77 flights, Jun 2025 to May 2026).
- Never cancelled in 77 scheduled flights.
- Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 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.
Moderate track record · 77 flights
Find United 699 fares Opens this date on Aviasales#3 · United 722
8:40 AM → 10:39 AM2h 59m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.5%
- Avg arrival delay
- 6 min
- Arrived on time 93% of the time (190 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; After 9 PM: 66%).
- Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 ground stops and delay programs started).
Moderate track record · 190 flights
Find United 722 fares Opens this date on Aviasales#4 · Spirit 1270
6:45 AM → 8:40 AM2h 55m nonstop
Local times, typical schedule. Last flown 2026-04-14.
85%
chance on time
- On time (history)
- 84%
- Cancelled
- 1.0%
- Avg arrival delay
- 8 min
- Arrived on time 84% of the time (95 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; After 9 PM: 66%).
- Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 ground stops and delay programs started).
Moderate track record · 95 flights
Find Spirit 1270 fares Opens this date on Aviasales#5 · Spirit 2232
9:33 AM → 11:27 AM2h 54m nonstop
Local times, typical schedule. Last flown 2026-04-30.
84%
chance on time
- On time (history)
- 100%
- Cancelled
- 6.7%
- Avg arrival delay
- 1 min
- Arrived on time 100% of the time (14 flights, Jun 2025 to May 2026).
- Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 ground stops and delay programs started).
- Short track record (14 flights), so its score leans on the airline's record at this hour.
Limited track record · 14 flights
Find Spirit 2232 fares Opens this date on Aviasales#6 · United 2162
1:10 PM → 3:13 PM3h 03m nonstop
Local times, typical schedule. Last flown 2026-05-31.
84%
chance on time
- On time (history)
- 83%
- Cancelled
- 0.0%
- Avg arrival delay
- 13 min
- Arrived on time 83% of the time (197 flights, Jun 2025 to May 2026).
- Never cancelled in 197 scheduled flights.
- Departs inside FLL's trouble window: 70% of its 20 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
Moderate track record · 197 flights
Find United 2162 fares Opens this date on Aviasales#7 · United 1696
4:55 PM → 7:05 PM3h 03m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 80%
- Cancelled
- 0.5%
- Avg arrival delay
- 17 min
- Arrived on time 80% of the time (215 flights, Jun 2025 to May 2026).
- Departs inside FLL's trouble window: 70% of its 20 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 215 flights
Find United 1696 fares Opens this date on Aviasales#8 · United 1338
6:57 PM → 8:59 PM3h 02m nonstop
Local times, typical schedule. Last flown 2026-05-20.
80%
chance on time
- On time (history)
- 79%
- Cancelled
- 0.7%
- Avg arrival delay
- 21 min
- Arrived on time 79% of the time (136 flights, Jun 2025 to May 2026).
- Departs inside FLL's trouble window: 70% of its 20 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 136 flights
Find United 1338 fares Opens this date on Aviasales#9 · Spirit 872
8:55 PM → 10:47 PM2h 52m nonstop
Local times, typical schedule. Last flown 2026-04-30.
70%
chance on time
- On time (history)
- 69%
- Cancelled
- 5.9%
- Avg arrival delay
- 16 min
- Arrived on time 69% of the time (16 flights, Jun 2025 to May 2026).
- Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 ground stops and delay programs started).
- Short track record (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find Spirit 872 fares Opens this date on Aviasales#10 · Frontier 1495
12:54 PM → 3:03 PM3h 09m nonstop
Local times, typical schedule. Last flown 2026-05-31.
56%
chance on time
- On time (history)
- 53%
- Cancelled
- 2.6%
- Avg arrival delay
- 33 min
- Arrived on time 53% of the time (75 flights, Jun 2025 to May 2026).
- Departs outside FLL's trouble window (1 PM to 7 PM, when 70% of its 20 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.
Moderate track record · 75 flights
Find Frontier 1495 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines87%
1,803 flights · 88% on time as flown · 0.8% cancel
- Spirit Airlines72%
949 flights · 73% on time as flown · 1.5% cancel
- Frontier Airlines67%
84 flights · 55% on time as flown · 1.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM95%
774 flights · avg delay 4 min
- 9 AM to noon92%
419 flights · avg delay 6 min
- Noon to 3 PM78%
424 flights · avg delay 18 min
- 3 to 6 PM72%
531 flights · avg delay 22 min
- 6 to 9 PM73%
413 flights · avg delay 23 min
- After 9 PM66%
275 flights · avg delay 28 min
Best day: Tuesday (83%). Worst: Sunday (70%).
Smarter routing
Nearby airports that run more on time
PBI → IAH 84% chance on time
Palm Beach International Airport to George Bush Intercontinental Airport · 431 flights a year · 42 mi from your airports · yours: 81%
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
- Air traffic control and airport volume36%
- Airline (crew, maintenance, boarding)34%
- Late-arriving aircraft27%
- Severe weather3%
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
FLL to IAH questions
- What time of day is best to fly FLL to IAH?
- Before 9 AM: 95% of flights arrived on time, against 66% for departures after 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 FLL to IAH?
- United, with a season-adjusted 87% chance of operating and arriving on time over 1,803 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 FLL to IAH?
- July (65% on time); the best was October (86%), 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 FLL
- IAH to FLL (return)
- FLL to ATL 71%
- FLL to EWR 70%
- FLL to LGA 66%
- FLL to JFK 69%
- FLL to BOS 66%
- FLL to ORD 69%
- FLL to PHL 73%
- FLL to BWI 73%
- FLL to CLT 78%
- FLL to DFW 72%
- FLL to DTW 73%
Live status: FAA delays and ground stops