Route
BOS → BWI
Boston Logan International Airport Baltimore/Washington International Thurgood Marshall Airport
How punctual is this route?
- On-time arrivals
- 78.3%
- Less than 15 minutes late
- Cancelled
- 2.9%
- Of scheduled flights
- Average delay when late
- 71 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3,536
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 57%
- Airline (crew, maintenance, cleaning) 27%
- Air traffic control & airport 13%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 75.0% | 288 |
| October 2025 | 69.5% | 337 |
| November 2025 | 83.3% | 290 |
| December 2025 | 79.0% | 275 |
| January 2026 | 88.4% | 239 |
| February 2026 | 88.1% | 233 |
| March 2026 | 82.7% | 266 |
| April 2026 | 80.1% | 322 |
| May 2026 | 79.7% | 316 |
| June 2026 | 77.1% | 303 |
| July 2026 | 69.8% | 326 |
| August 2026 | 74.6% | 341 |
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 |
|---|---|---|---|---|
| Southwest Airlines | 2,413 | 76.8% | 2.3% | 71 min |
| Republic Airways | 1,099 | 81.8% | 4.3% | 71 min |
| NK | 24 | 75.0% | 0.0% | 79 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
YX5644
23% late · 331 flights
-
YX5703
10% late · 249 flights
-
YX5668
16% late · 194 flights
-
YX5851
41% late · 133 flights
-
YX5842
4% late · 96 flights
-
YX5849
11% late · 90 flights
-
WN1496
18% late · 79 flights
-
WN487
35% late · 67 flights
-
WN727
12% late · 61 flights
-
WN1898
51% late · 60 flights
-
WN1499
4% late · 58 flights
-
WN717
11% late · 58 flights
-
WN551
44% late · 57 flights
-
WN732
10% late · 51 flights
-
WN4210
0% late · 50 flights
-
WN1034
16% late · 46 flights
-
WN1250
20% late · 45 flights
-
WN735
56% late · 43 flights
-
WN1180
15% late · 42 flights
-
WN233
5% late · 42 flights
-
WN2529
5% late · 42 flights
-
WN2142
13% late · 39 flights
-
WN736
44% late · 36 flights
-
WN1415
28% late · 35 flights
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