Route
BOS → MIA
Boston Logan International Airport Miami International Airport
How punctual is this route?
- On-time arrivals
- 78.0%
- Less than 15 minutes late
- Cancelled
- 2.2%
- Of scheduled flights
- Average delay when late
- 82 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3,368
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 38%
- Late-arriving aircraft 33%
- Air traffic control & airport 27%
- Extreme weather 3%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 79.4% | 224 |
| October 2025 | 75.9% | 250 |
| November 2025 | 79.4% | 259 |
| December 2025 | 69.9% | 278 |
| January 2026 | 75.9% | 305 |
| February 2026 | 75.9% | 310 |
| March 2026 | 78.2% | 325 |
| April 2026 | 76.0% | 334 |
| May 2026 | 79.9% | 280 |
| June 2026 | 86.7% | 264 |
| July 2026 | 81.9% | 268 |
| August 2026 | 78.8% | 271 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| American Airlines | 2,271 | 82.3% | 1.7% | 81 min |
| Delta Air Lines | 892 | 72.4% | 2.6% | 82 min |
| NK | 176 | 55.2% | 6.2% | 83 min |
| Republic Airways | 25 | 44.0% | 0.0% | 71 min |
| JetBlue Airways | 4 | 100.0% | 0.0% | — |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
DL776
37% late · 364 flights
-
DL1399
16% late · 345 flights
-
AA1259
11% late · 311 flights
-
AA2980
7% late · 252 flights
-
AA1418
4% late · 209 flights
-
AA873
10% late · 174 flights
-
AA2591
5% late · 156 flights
-
AA891
24% late · 110 flights
-
AA1397
33% late · 106 flights
-
AA2247
28% late · 103 flights
-
NK3033
34% late · 96 flights
-
AA2610
27% late · 93 flights
-
DL1649
28% late · 84 flights
-
AA1562
25% late · 76 flights
-
AA1565
35% late · 76 flights
-
AA1589
25% late · 69 flights
-
AA815
14% late · 60 flights
-
AA1894
21% late · 44 flights
-
AA1909
34% late · 44 flights
-
DL1357
33% late · 41 flights
-
AA1898
26% late · 37 flights
-
AA2199
29% late · 31 flights
-
AA1385
19% late · 30 flights
-
AA1680
34% late · 30 flights
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