On-Time Report

Airports › Birmingham (BHM) › September 2025

Airport month · September 2025

Birmingham-Shuttlesworth International in September 2025

88.3%departed on time

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 2025, reporting carriers scheduled 1,375 domestic departures from Birmingham-Shuttlesworth International (BHM). 88.3% left less than 15 minutes late and 87.8% reached their destination on time; 0.2% were cancelled.

Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so BHM departures were 5.2 points above the national departure figure.

A year earlier, in September 2024, the airport had 1,429 departures with 84.5% leaving on time: a change of +3.8 points, with flights down 4%.

Flights arriving at BHM that month were on time 87.1% of the time (1,373 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 44%, air carrier 25% and national aviation system 18%.

Every scheduled departure from BHM in September 2025, judged by arrival at the destination.

September 2025 against a year earlier, the airport's year and the nation

MeasureSep 2025Sep 2024BHM, 12 months to Jul 2026All reported flights, Sep 2025
Departed on time88.3%84.5%79.8%83.1%
Arrived on time87.8%82.6%80.3%82.8%
Cancelled0.2%0.6%1.6%0.5%
Average departure delay (late minutes only)9.7 min10.1 min16.3 min12.2 min
Scheduled departures a day46484618,748
Scheduled departures1,3751,42916,924562,439

Airlines that month

Reporting carrierFlightsShareOn timeAvg arrival delayCancelled
WN Southwest Airlines36426%90.4%-2.0 min0.0%
OH PSA Airlines30522%83.3%2.1 min0.7%
DL Delta Air Lines26119%95.0%-11.0 min0.0%
MQ Envoy Air20915%84.7%0.9 min0.5%
OO SkyWest Airlines1209%82.5%6.8 min0.0%
YX Republic Airline745%91.9%-8.6 min0.0%
NK Spirit Airlines272%63.0%22.6 min0.0%
AA American Airlines151%100.0%-15.3 min0.0%

Busiest routes that month

RouteCitiesFlightsOn timeAvg arrival delayCancelled
BHM–ATLBirmingham to Atlanta26095.0%-11.0 min0.0%
BHM–DFWBirmingham to Dallas/Fort Worth18681.7%4.9 min1.6%
BHM–CLTBirmingham to Charlotte16191.3%-6.0 min0.0%
BHM–ORDBirmingham to Chicago12286.1%-2.6 min0.0%
BHM–DENBirmingham to Denver8985.4%7.0 min0.0%
BHM–DCABirmingham to Washington8673.3%4.4 min0.0%
BHM–DALBirmingham to Dallas7393.2%-3.6 min0.0%
BHM–MIABirmingham to Miami5390.6%-2.9 min0.0%
BHM–PHLBirmingham to Philadelphia5286.5%3.9 min0.0%
BHM–MDWBirmingham to Chicago4791.5%-3.0 min0.0%
BHM–HOUBirmingham to Houston3889.5%-7.6 min0.0%
BHM–MCOBirmingham to Orlando3892.1%-2.2 min0.0%

By scheduled departure hour

On-time share:under 62%6270768288% and over
Share of departures that left less than 15 minutes late, by scheduled hour (local time), September 2025.

Delay causes

BTS cause categoryShare of delay minutesNational, Sep 2025Minutes
Air carrier25.2%34.3%3,100
Late-arriving aircraft44.1%37.4%5,421
National Aviation System17.5%22.6%2,147
Extreme weather13.2%5.6%1,618
Security0.0%0.1%0
12,286 delay minutes on 161 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.
← August 2025October 2025 →

Questions and answers

How many flights left BHM on time in September 2025?

88.3% of 1,375 scheduled domestic departures left less than 15 minutes late, and 87.8% reached their destination on time. The national figures that month were 83.1% and 82.8%.

How does that compare with a year earlier?

In September 2024, 84.5% of 1,429 departures left on time and 0.6% were cancelled, against 88.3% and 0.2% in September 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for BHM · methodology · corrections.