Fort Lauderdale (FLL) to St. Louis (STL): On-Time Performance
Data through July 2026
The calendar drives reliability on FLL–STL. September 2025 flights landed on schedule 98% of the time, but February 2026 dropped to 69% — a gap of 29 points. Across the full period the route averages 80% on-time against a national 78%. Morning departures also hold up better than evening ones (93% vs 64%), which matters most in the rough months.
- On-time
- 80%
- arrived <15 min late
- Avg delay
- 13 min
- completed flights
- Cancelled
- 0.9%
- Flights/day
- 2.3
- last 12 months
- Duration
- 2h 56m
- scheduled
- Distance
- 1,057 mi
Best airline from FLL to STL
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlinesmost reliable | 80% | 12 min | 0.6% | 1,549 |
| Spirit Airlines | 76% | 14 min | 2.5% | 238 |
Monthly on-time trend
Best time to fly from FLL to STL
Aim for departures around 6 a.m. (97% on-time); avoid 3 p.m. departures (58%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 77% | 15 min |
| Tuesdaybest | 90% | 7 min |
| Wednesday | 86% | 7 min |
| Thursday | 82% | 11 min |
| Friday | 75% | 13 min |
| Saturday | 80% | 12 min |
| Sunday | 73% | 20 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft41%
- Airline operations36%
- National airspace system19%
- Weather5%
Frequently asked questions
- How often are flights from FLL to STL delayed?
- 21% of FLL–STL flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 13 minutes.
- Which airline is most reliable from FLL to STL?
- Southwest Airlines has the best on-time record on this route at 80%, based on 1,549 flights. 2 airlines flew FLL–STL frequently enough to compare in this period.
- What is the best time of day to fly from FLL to STL?
- Departures around 6 a.m. have the best record (97% on-time), while departures around 3 p.m. have the worst (58%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from FLL to STL?
- The scheduled FLL–STL flight time averages 2h 56m over 1,057 miles. Actual arrival times vary — flights on this route land 15+ minutes late 21% of the time.
- How often are FLL to STL flights cancelled?
- 0.9% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from FLL to STL?
- February 2026 was the roughest month in this dataset, with only 69% of arrivals on time. The best was September 2025 at 98%. If your dates are flexible, that 29-point gap is worth planning around.
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Based on 1,791 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.