Baltimore (BWI) to Miami (MIA): On-Time Performance
Data through May 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 75% on-time against a national 78%. Morning departures also hold up better than evening ones (84% vs 64%), which matters most in the rough months.
- On-time
- 75%
- arrived <15 min late
- Avg delay
- 19 min
- completed flights
- Cancelled
- 2.3%
- Flights/day
- 6.3
- last 12 months
- Duration
- 2h 47m
- scheduled
- Distance
- 946 mi
Best airline from BWI to MIA
5 airlines flew this route regularly between 2024-06 and 2026-05.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| American Airlinesmost reliable | 81% | 19 min | 2.4% | 1,155 |
| Envoy Air | 81% | 15 min | 1.7% | 292 |
| Southwest Airlines | 73% | 17 min | 1.6% | 2,409 |
| Frontier Airlines | 70% | 27 min | 4.6% | 561 |
| Spirit Airlines | 65% | 29 min | 3.9% | 228 |
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 (59%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 75% | 18 min |
| Tuesday | 79% | 18 min |
| Wednesdaybest | 79% | 17 min |
| Thursday | 74% | 22 min |
| Friday | 74% | 20 min |
| Saturday | 76% | 17 min |
| Sunday | 70% | 24 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft35%
- Airline operations32%
- National airspace system26%
- Weather6%
Frequently asked questions
- How often are flights from BWI to MIA delayed?
- 25% of BWI–MIA flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-06 and 2026-05. The average arrival delay across completed flights was 19 minutes.
- Which airline is most reliable from BWI to MIA?
- American Airlines has the best on-time record on this route at 81%, based on 1,155 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 (59%). 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 47m over 946 miles. Actual arrival times vary — flights on this route land 15+ minutes late 25% of the time.
- How often are BWI to MIA flights cancelled?
- 2.3% of scheduled flights on this route were cancelled between 2024-06 and 2026-05, 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 4,645 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.