Airports › Boston (BOS) › September 2023
Airport month · September 2023
Logan International in September 2023
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In September 2023, reporting carriers scheduled 11,742 domestic departures from Logan International (BOS). 69.3% left less than 15 minutes late and 71.0% reached their destination on time; 3.3% were cancelled.
Nationally that month, 80.5% of flights departed on time and 80.1% arrived on time, so BOS departures were 11.2 points below the national departure figure.
Flights arriving at BOS that month were on time 65.8% of the time (11,739 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 40%, air carrier 39% and national aviation system 18%.
- On time 71.0%
- Arrived 15+ minutes late 25.3%
- Cancelled 3.3%
- Diverted 0.3%
September 2023 against a year earlier, the airport's year and the nation
| Measure | Sep 2023 | Year earlier | BOS, 12 months to Jul 2026 | All reported flights, Sep 2023 |
|---|---|---|---|---|
| Departed on time | 69.3% | — | 74.4% | 80.5% |
| Arrived on time | 71.0% | — | 73.3% | 80.1% |
| Cancelled | 3.3% | — | 2.8% | 1.2% |
| Average departure delay (late minutes only) | 24.6 min | — | 18.3 min | 14.1 min |
| Scheduled departures a day | 391 | — | 393 | 18,978 |
| Scheduled departures | 11,742 | — | 143,447 | 569,338 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| B6 JetBlue Airways | 3,602 | 31% | 61.9% | 24.4 min | 3.4% |
| DL Delta Air Lines | 2,246 | 19% | 76.3% | 9.0 min | 1.0% |
| YX Republic Airline | 1,897 | 16% | 76.7% | -1.3 min | 7.1% |
| AA American Airlines | 1,308 | 11% | 76.8% | 6.5 min | 1.6% |
| UA United Airlines | 1,053 | 9% | 76.1% | 3.0 min | 4.7% |
| WN Southwest Airlines | 569 | 5% | 68.5% | 15.8 min | 1.1% |
| NK Spirit Airlines | 431 | 4% | 63.1% | 14.8 min | 4.4% |
| AS Alaska Airlines | 234 | 2% | 76.1% | 2.1 min | 0.0% |
| MQ Envoy Air | 175 | 1% | 74.3% | 13.3 min | 3.4% |
| OO SkyWest Airlines | 120 | 1% | 67.5% | 18.1 min | 5.0% |
| F9 Frontier Airlines | 56 | 0% | 75.0% | 21.9 min | 1.8% |
| G4 Allegiant Air | 34 | 0% | 97.1% | -11.0 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| BOS–DCA | Boston to Washington | 734 | 69.8% | 14.7 min | 3.8% |
| BOS–LGA | Boston to New York | 659 | 67.8% | 18.2 min | 7.3% |
| BOS–ORD | Boston to Chicago | 551 | 72.6% | 10.3 min | 2.4% |
| BOS–JFK | Boston to New York | 487 | 67.4% | 13.5 min | 7.8% |
| BOS–SFO | Boston to San Francisco | 451 | 76.7% | 4.9 min | 1.8% |
| BOS–ATL | Boston to Atlanta | 430 | 74.2% | 8.8 min | 1.4% |
| BOS–CLT | Boston to Charlotte | 420 | 73.3% | 7.6 min | 4.0% |
| BOS–PHL | Boston to Philadelphia | 399 | 66.9% | 20.3 min | 3.3% |
| BOS–MCO | Boston to Orlando | 393 | 59.5% | 20.8 min | 2.5% |
| BOS–LAX | Boston to Los Angeles | 363 | 76.0% | 11.6 min | 0.6% |
| BOS–BWI | Boston to Baltimore | 355 | 73.2% | 13.2 min | 2.5% |
| BOS–EWR | Boston to Newark | 330 | 63.6% | 16.2 min | 10.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left BOS on time in September 2023?
69.3% of 11,742 scheduled domestic departures left less than 15 minutes late, and 71.0% reached their destination on time. The national figures that month were 80.5% and 80.1%.
How does that compare with a year earlier?
September 2022 is outside the 36 months on file, or the airport had too few reported flights that month.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2023; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for BOS · methodology · corrections.