Route · BOS → BWI · 2020–2025 BTS data
Boston to Baltimore
The BOS–BWI corridor (Boston, MA → Baltimore, MD) runs ahead of the national average, served by 23 carriers across roughly 369 miles.
Data updated 2026-06-13
- 83.1%
- On-time
- +4.1 pts
- vs US avg
- 70 min
- Delay when late
- 19,555
- Flights
Cancelled
1.6%
Best Month
Jan 2025 92%
Worst Month
Jun 2025 69%
Distance
369 mi
Carriers
23
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 275 | 57 | 3 | 0 | YX,WN |
| Nov 2025 | 290 | 46 | 14 | 0 | WN,YX |
| Oct 2025 | 337 | 102 | 3 | 0 | WN,YX |
| Sep 2025 | 288 | 71 | 4 | 0 | WN,YX |
| Aug 2025 | 318 | 59 | 5 | 0 | WN,YX,NK |
| Jul 2025 | 364 | 99 | 22 | 0 | NK,WN,YX |
| Jun 2025 | 357 | 109 | 5 | 2 | WN,YX,NK |
| May 2025 | 353 | 90 | 1 | 0 | NK,WN,YX |
| Apr 2025 | 343 | 53 | 0 | 0 | NK,WN,YX |
| Mar 2025 | 327 | 47 | 1 | 1 | NK,WN,YX |
| Feb 2025 | 285 | 58 | 5 | 0 | WN,YX,NK |
| Jan 2025 | 306 | 25 | 14 | 0 | WN,YX,NK |
| Dec 2024 | 351 | 50 | 4 | 1 | NK,WN,YX |
| Nov 2024 | 372 | 46 | 0 | 1 | YX,NK,WN |
| Oct 2024 | 388 | 47 | 0 | 0 | WN,YX,NK |
| Sep 2024 | 359 | 57 | 0 | 0 | WN,YX,NK |
| Aug 2024 | 387 | 89 | 18 | 1 | NK,WN,YX |
| Jul 2024 | 338 | 100 | 3 | 0 | NK,WN,YX |
| Jun 2024 | 338 | 79 | 5 | 0 | NK,WN,YX |
| May 2024 | 356 | 76 | 2 | 0 | NK,WN,YX |
| Apr 2024 | 339 | 59 | 2 | 0 | B6,WN,YX |
| Mar 2024 | 290 | 38 | 0 | 0 | B6,YX,WN |
| Feb 2024 | 254 | 27 | 3 | 0 | B6,WN,YX |
| Jan 2024 | 281 | 57 | 15 | 1 | B6,WN,YX |
Cancellation Rate
1.6%
129 of 7,896 flights
Diversion Rate
0.1%
7 of 7,896 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 →BWI - Baltimore
Full on-time, delay-cause, and seasonal performance for Baltimore, MD.
Destination airport →Compare the two airports
See BOS and BWI 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–BWI.
Routes with a similar on-time rate
What the Data Says About BOS to BWI
Bureau of Transportation Statistics records show Boston to Baltimore (BOS to BWI) running a 83.1% on-time rate over 19,555 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 70.3 minutes. The 369-mile corridor is served by 23 carriers, and over the last 24 months 1.6% of 7,896 flights were cancelled, 0.1% diverted.
The monthly split is wide on this route: Jan 2025 posted the strongest performance at 92% on-time, while Jun 2025 came in at just 69% - a 22-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.