Baltimore (BWI) to Miami (MIA): On-Time Performance
Data through July 2026
The calendar drives reliability on BWI–MIA. September 2025 flights landed on schedule 89% of the time, but August 2024 dropped to 58% — a gap of 31 points. Across the full period the route averages 74% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 62%), which matters most in the rough months.
- On-time
- 74%
- arrived <15 min late
- Avg delay
- 20 min
- completed flights
- Cancelled
- 2.2%
- Flights/day
- 6.3
- last 12 months
- Duration
- 2h 46m
- scheduled
- Distance
- 946 mi
Best airline from BWI to MIA
5 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Airmost reliable | 81% | 15 min | 1.7% | 288 |
| American Airlines | 80% | 21 min | 2.4% | 1,245 |
| Southwest Airlines | 73% | 18 min | 1.5% | 2,505 |
| Frontier Airlines | 69% | 29 min | 4.7% | 590 |
| Spirit Airlines | 64% | 31 min | 3.5% | 198 |
Monthly on-time trend
Best time to fly from BWI to MIA
Aim for departures around 6 a.m. (89% on-time); avoid 3 p.m. departures (58%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 74% | 20 min |
| Tuesdaybest | 80% | 17 min |
| Wednesday | 78% | 17 min |
| Thursday | 73% | 23 min |
| Friday | 72% | 21 min |
| Saturday | 75% | 20 min |
| Sunday | 69% | 23 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft37%
- Airline operations31%
- National airspace system25%
- Weather7%
Frequently asked questions
- How often are flights from BWI to MIA delayed?
- 26% of BWI–MIA 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 20 minutes.
- Which airline is most reliable from BWI to MIA?
- Envoy Air has the best on-time record on this route at 81%, based on 288 flights. 5 airlines flew BWI–MIA frequently enough to compare in this period.
- What is the best time of day to fly from BWI to MIA?
- Departures around 6 a.m. have the best record (89% 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 BWI to MIA?
- The scheduled BWI–MIA flight time averages 2h 46m over 946 miles. Actual arrival times vary — flights on this route land 15+ minutes late 26% of the time.
- How often are BWI to MIA flights cancelled?
- 2.2% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, slightly above the national rate of 1.6%.
- What is the worst month to fly from BWI to MIA?
- August 2024 was the roughest month in this dataset, with only 58% of arrivals on time. The best was September 2025 at 89%. If your dates are flexible, that 31-point gap is worth planning around.
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Based on 4,826 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.