Best Time to Fly MIA to BWI: On-Time Stats by Hour & Airline
Miami International → Baltimore/Washington International Thurgood Marshall
Data through July 2026 · Last updated October 18, 2026
2,286 flights were scheduled from Miami (MIA) to Baltimore (BWI) in the last 12 months, and 72.9% of those that flew arrived on time, 4.7 points below the US average of 77.6%.
Envoy Air was the most punctual of the 4 airlines on the route at 90.3%, while American Airlines trailed at 68.6%.
October has been the best month (85% on time) and Sunday the weakest day of the week (68%).
2.0% of flights were cancelled, versus 1.8% nationally.
MIA to BWI on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Envoy Air | 90.3% | 48 min | 0.0% | 114 |
| Southwest Airlines | 74.3% | 54 min | 2.0% | 1,182 |
| Frontier Airlines | 72.3% | 90 min | 3.0% | 265 |
| American Airlines | 68.6% | 60 min | 1.9% | 698 |
| Spirit Airlines | Limited data | 27 | ||
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MIA to BWI
On-time arrival % by scheduled departure hour (local time), 4,636 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 5am–6am | 91.0% | 2.6% | 114 |
| 6am–7am | 95.1% | 2.5% | 480 |
| 7am–8am | 95.2% | 0.9% | 420 |
| 8am–9am | 89.7% | 0.0% | 78 |
| 9am–10am | 81.2% | 4.0% | 50 |
| 10am–11am | Limited data | 26 | |
| 11am–12pm | 76.8% | 1.3% | 158 |
| 12pm–1pm | 74.0% | 1.8% | 399 |
| 1pm–2pm | 71.9% | 2.5% | 158 |
| 2pm–3pm | 79.3% | 1.4% | 207 |
| 3pm–4pm | 65.4% | 2.5% | 671 |
| 4pm–5pm | 67.2% | 2.0% | 202 |
| 5pm–6pm | 72.9% | 1.6% | 310 |
| 6pm–7pm | 45.6% | 3.1% | 222 |
| 7pm–8pm | 70.5% | 1.6% | 258 |
| 8pm–9pm | 59.2% | 4.0% | 125 |
| 9pm–10pm | 68.3% | 2.2% | 758 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on MIA to BWI
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 83.5% | +5.8 pts | 0.0% | 91 |
| Christmas & New Year (Dec 20 - Jan 3) | 68.4% | -9.4 pts | 1.5% | 199 |
| Summer peak (Jun 15 - Aug 15) | 61.2% | -16.6 pts | 4.7% | 774 |
| All other days | 77.8% | — | 1.6% | 3,572 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).