Best Time to Fly MIA to BDL: On-Time Stats by Hour & Airline
Miami International → Bradley International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 71.0% of Miami (MIA) to Hartford (BDL) flights arrived on time (428 scheduled flights). That is 6.6 points below the national average of 77.6%.
Frontier Airlines was the most punctual of the 2 airlines on the route at 78.1%, while American Airlines trailed at 70.4%.
October has been the best month (86% on time) and Friday the weakest day of the week (69%).
1.4% of flights were cancelled, versus 1.8% nationally.
MIA to BDL 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 |
|---|---|---|---|---|
| Frontier Airlines | 78.1% | 39 min | 3.0% | 33 |
| American Airlines | 70.4% | 52 min | 1.3% | 395 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly MIA to BDL
On-time arrival % by scheduled departure hour (local time), 853 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | Limited data | 6 | |
| 9am–10am | Limited data | 4 | |
| 10am–11am | 84.8% | 0.0% | 33 |
| 12pm–1pm | Limited data | 9 | |
| 1pm–2pm | Limited data | 1 | |
| 3pm–4pm | Limited data | 26 | |
| 4pm–5pm | Limited data | 15 | |
| 7pm–8pm | 78.3% | 1.9% | 155 |
| 8pm–9pm | 70.1% | 1.1% | 535 |
| 9pm–10pm | 75.4% | 0.0% | 69 |
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 BDL
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) | Limited data | 14 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 71.9% | -4.2 pts | 2.9% | 34 |
| Summer peak (Jun 15 - Aug 15) | 56.6% | -19.5 pts | 1.6% | 124 |
| All other days | 76.1% | — | 1.2% | 681 |
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).