Route · BWI → BOS · 2020–2025 BTS data
Baltimore to Boston
The BWI–BOS corridor (Baltimore, MD → Boston, MA) runs behind the national average, served by 23 carriers across roughly 369 miles.
Data updated 2026-06-13
- 78.1%
- On-time
- -0.9 pts
- vs US avg
- 69 min
- Delay when late
- 19,573
- Flights
Cancelled
1.6%
Best Month
Jan 2025 88%
Worst Month
Sep 2025 61%
Distance
369 mi
Carriers
23
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 274 | 73 | 4 | 1 | YX,WN |
| Nov 2025 | 293 | 41 | 17 | 0 | WN,YX |
| Oct 2025 | 336 | 107 | 3 | 0 | WN,YX |
| Sep 2025 | 288 | 113 | 4 | 0 | WN,YX |
| Aug 2025 | 318 | 66 | 4 | 0 | WN,YX,NK |
| Jul 2025 | 365 | 103 | 18 | 0 | NK,WN,YX |
| Jun 2025 | 359 | 113 | 8 | 0 | WN,YX,NK |
| May 2025 | 370 | 131 | 1 | 0 | NK,WN,YX |
| Apr 2025 | 357 | 79 | 0 | 0 | NK,WN,YX |
| Mar 2025 | 326 | 62 | 1 | 0 | NK,WN,YX |
| Feb 2025 | 285 | 50 | 3 | 0 | WN,YX,NK |
| Jan 2025 | 307 | 37 | 13 | 0 | WN,YX,NK |
| Dec 2024 | 351 | 57 | 6 | 0 | NK,WN,YX |
| Nov 2024 | 373 | 47 | 0 | 0 | YX,NK,WN |
| Oct 2024 | 389 | 63 | 0 | 0 | WN,YX,NK |
| Sep 2024 | 359 | 68 | 0 | 0 | WN,YX,NK |
| Aug 2024 | 385 | 105 | 19 | 1 | NK,WN,YX |
| Jul 2024 | 338 | 128 | 3 | 0 | NK,WN,YX |
| Jun 2024 | 338 | 95 | 3 | 2 | NK,WN,YX |
| May 2024 | 356 | 131 | 2 | 0 | NK,WN,YX |
| Apr 2024 | 339 | 84 | 2 | 0 | B6,WN,YX |
| Mar 2024 | 292 | 58 | 0 | 0 | B6,YX,WN |
| Feb 2024 | 262 | 38 | 4 | 0 | B6,WN,YX |
| Jan 2024 | 288 | 73 | 16 | 0 | B6,WN,YX |
Cancellation Rate
1.6%
131 of 7,948 flights
Diversion Rate
0.1%
4 of 7,948 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BWI - Baltimore
Full on-time, delay-cause, and seasonal performance for Baltimore, MD.
Origin airport →BOS - Boston
Full on-time, delay-cause, and seasonal performance for Boston, MA.
Destination airport →Compare the two airports
See BWI 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 BWI–BOS.
Routes with a similar on-time rate
What the Data Says About BWI to BOS
The Baltimore to Boston corridor (BWI to BOS) posts a 78.1% on-time rate on the lower edge of the average band, based on 19,573 tracked flights. Late flights run 69.0 minutes behind on average. 23 carriers cover the 369-mile route; over the last 24 months, 131 of 7,948 flights were cancelled (1.6%) and 0.1% diverted.
The monthly split is wide on this route: Jan 2025 posted the strongest performance at 88% on-time, while Sep 2025 came in at just 61% - a 27-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.