Route · BOS → MIA · 2020–2025 BTS data
Boston to Miami
The BOS–MIA corridor (Boston, MA → Miami, FL) runs ahead of the national average, served by 34 carriers across roughly 1,258 miles.
Data updated 2026-06-13
- 79.4%
- On-time
- +0.4 pts
- vs US avg
- 74 min
- Delay when late
- 20,541
- Flights
Cancelled
1.4%
Best Month
Oct 2024 91%
Worst Month
Dec 2025 71%
Distance
1,258 mi
Carriers
34
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 278 | 82 | 6 | 0 | DL,YX,AA |
| Nov 2025 | 259 | 52 | 6 | 0 | NK,AA,DL,YX |
| Oct 2025 | 250 | 60 | 1 | 0 | AA,DL,NK |
| Sep 2025 | 224 | 46 | 1 | 0 | DL,NK,AA,B6 |
| Aug 2025 | 287 | 47 | 0 | 0 | AA,NK,B6,DL |
| Jul 2025 | 301 | 77 | 12 | 4 | AA,B6,DL,NK |
| Jun 2025 | 301 | 80 | 4 | 1 | AA,B6,DL,NK |
| May 2025 | 342 | 80 | 2 | 0 | AA,B6,DL,NK,YX |
| Apr 2025 | 414 | 64 | 2 | 2 | DL,F9,NK,AA,B6 |
| Mar 2025 | 379 | 84 | 4 | 2 | AA,B6,DL,F9,MQ,NK |
| Feb 2025 | 341 | 91 | 5 | 0 | AA,B6,DL,F9,MQ,NK |
| Jan 2025 | 348 | 91 | 2 | 1 | AA,B6,DL,YX,F9,MQ,NK |
| Dec 2024 | 387 | 108 | 8 | 1 | AA,B6,DL,F9,NK,YX |
| Nov 2024 | 314 | 28 | 0 | 0 | B6,NK,YX,DL,AA |
| Oct 2024 | 289 | 25 | 5 | 1 | DL,B6,AA |
| Sep 2024 | 269 | 33 | 0 | 1 | AA,B6,DL,NK |
| Aug 2024 | 294 | 80 | 8 | 4 | AA,B6,DL,NK |
| Jul 2024 | 274 | 69 | 7 | 0 | AA,B6,DL |
| Jun 2024 | 266 | 59 | 11 | 2 | AA,B6,DL,YX |
| May 2024 | 298 | 57 | 2 | 1 | AA,B6,DL,NK,YX |
| Apr 2024 | 356 | 46 | 3 | 2 | AA,B6,DL,NK,YX |
| Mar 2024 | 343 | 82 | 8 | 3 | AA,B6,DL,MQ,NK,YX |
| Feb 2024 | 345 | 66 | 1 | 0 | AA,B6,DL,MQ,NK |
| Jan 2024 | 353 | 98 | 4 | 0 | AA,B6,DL,MQ,NK,YX |
Cancellation Rate
1.4%
102 of 7,512 flights
Diversion Rate
0.3%
25 of 7,512 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BOS - Boston
Full on-time, delay-cause, and seasonal performance for Boston, MA.
Origin airport →MIA - Miami
Full on-time, delay-cause, and seasonal performance for Miami, FL.
Destination airport →Compare the two airports
See BOS and MIA side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to BOS–MIA.
Routes with a similar on-time rate
What the Data Says About BOS to MIA
20,541 tracked flights put the BOS to MIA pairing (Boston to Miami) at a 79.4% on-time rate, squarely in line with the wider network. Delays that do occur run 73.6 minutes on average. Across the 1,258-mile route and its 34 carriers, the trailing 24 months show 1.4% cancelled and 0.3% diverted (7,512 flights sampled).
The monthly split is wide on this route: Oct 2024 posted the strongest performance at 91% on-time, while Dec 2025 came in at just 71% - a 21-point swing worth factoring into travel timing.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.