Route · MIA → BOS · 2020–2025 BTS data
Miami to Boston
The MIA–BOS corridor (Miami, FL → Boston, MA) runs behind the national average, served by 36 carriers across roughly 1,258 miles.
Data updated 2026-06-13
- 74.7%
- On-time
- -4.3 pts
- vs US avg
- 78 min
- Delay when late
- 20,561
- Flights
Cancelled
1.5%
Best Month
Nov 2024 86%
Worst Month
Oct 2025 57%
Distance
1,258 mi
Carriers
36
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 276 | 69 | 6 | 0 | DL,YX,AA |
| Nov 2025 | 257 | 60 | 6 | 0 | AA,DL,YX |
| Oct 2025 | 250 | 107 | 1 | 1 | AA,DL,NK |
| Sep 2025 | 224 | 77 | 0 | 2 | DL,NK,AA,B6 |
| Aug 2025 | 287 | 85 | 2 | 0 | AA,NK,B6,DL |
| Jul 2025 | 302 | 116 | 14 | 0 | AA,B6,DL,NK |
| Jun 2025 | 300 | 88 | 3 | 0 | AA,B6,DL,NK |
| May 2025 | 342 | 99 | 4 | 1 | AA,B6,DL,YX,NK |
| Apr 2025 | 413 | 89 | 2 | 1 | DL,F9,NK,AA,B6 |
| Mar 2025 | 380 | 112 | 7 | 0 | AA,B6,DL,F9,MQ,NK |
| Feb 2025 | 340 | 91 | 6 | 1 | AA,B6,DL,F9,MQ,NK |
| Jan 2025 | 349 | 84 | 4 | 1 | AA,B6,DL,YX,F9,MQ,NK |
| Dec 2024 | 389 | 120 | 7 | 1 | AA,B6,DL,F9,NK,YX |
| Nov 2024 | 313 | 45 | 0 | 1 | B6,NK,YX,DL,AA |
| Oct 2024 | 287 | 45 | 5 | 2 | DL,B6,AA |
| Sep 2024 | 269 | 57 | 0 | 0 | AA,B6,DL,NK |
| Aug 2024 | 294 | 119 | 9 | 0 | AA,B6,DL,NK |
| Jul 2024 | 274 | 93 | 7 | 0 | AA,B6,DL |
| Jun 2024 | 267 | 109 | 11 | 0 | AA,B6,DL,YX |
| May 2024 | 300 | 97 | 1 | 0 | AA,B6,DL,MQ,NK,YX |
| Apr 2024 | 356 | 107 | 3 | 2 | AA,B6,DL,NK,YX |
| Mar 2024 | 344 | 105 | 9 | 0 | AA,B6,DL,MQ,NK,YX |
| Feb 2024 | 346 | 104 | 1 | 0 | AA,B6,DL,MQ,NK |
| Jan 2024 | 352 | 115 | 5 | 5 | AA,B6,DL,MQ,NK,YX |
Cancellation Rate
1.5%
113 of 7,511 flights
Diversion Rate
0.2%
18 of 7,511 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
MIA - Miami
Full on-time, delay-cause, and seasonal performance for Miami, FL.
Origin airport →BOS - Boston
Full on-time, delay-cause, and seasonal performance for Boston, MA.
Destination airport →Compare the two airports
See MIA and BOS side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to MIA–BOS.
Routes with a similar on-time rate
What the Data Says About MIA to BOS
On-time performance on the MIA to BOS pairing (Miami to Boston) trails a chunk of the network: 74.7% of 20,561 tracked flights arrived on schedule, with a 77.6-minute average delay on the ones that ran late. The route spans about 1,258 miles across 36 carriers. Cancellations over the trailing 24 months hit 1.5% (113 of 7,511 flights), with 0.2% diverted.
The monthly split is wide on this route: Nov 2024 posted the strongest performance at 86% on-time, while Oct 2025 came in at just 57% - a 28-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from MIA to BOS? ▼
What is the cancellation rate for MIA to BOS? ▼
How far is the flight from MIA to BOS? ▼
When is the best time to fly from MIA to BOS? ▼
Flight Guides
Tips and data-driven advice for choosing reliable routes.
Explore PlainFlights
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.