Billings Logan International in September 2024

92.0%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 2024, reporting carriers scheduled 375 domestic departures from Billings Logan International (BIL). 92.0% left less than 15 minutes late and 90.7% reached their destination on time; 0.3% were cancelled.

Nationally that month, 84.4% of flights departed on time and 83.9% arrived on time, so BIL departures were 7.6 points above the national departure figure.

A year earlier, in September 2023, the airport had 253 departures with 88.9% leaving on time: a change of +3.1 points, with flights up 48%.

Flights arriving at BIL that month were on time 89.1% of the time (375 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 74%, late-arriving aircraft 20% and national aviation system 5%.

On time 90.7%
Arrived 15+ minutes late 9.1%
Cancelled 0.3%
Diverted 0.0%

Every scheduled departure from BIL in September 2024, judged by arrival at the destination.

September 2024 against a year earlier, the airport's year and the nation

Measure	Sep 2024	Sep 2023	BIL, 12 months to Jul 2026	All reported flights, Sep 2024
Departed on time	92.0%	88.9%	87.4%	84.4%
Arrived on time	90.7%	88.9%	84.7%	83.9%
Cancelled	0.3%	0.0%	0.6%	0.6%
Average departure delay (late minutes only)	8.1 min	6.3 min	11.8 min	10.6 min
Scheduled departures a day	13	8	13	19,421
Scheduled departures	375	253	4,642	582,622

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	141	38%	87.9%	-0.5 min	0.7%
MQ Envoy Air	90	24%	92.2%	-5.6 min	0.0%
DL Delta Air Lines	62	17%	95.2%	2.8 min	0.0%
UA United Airlines	60	16%	93.3%	-7.8 min	0.0%
G4 Allegiant Air	22	6%	81.8%	7.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BIL–DEN	Billings to Denver	150	89.3%	-2.9 min	0.0%
BIL–SLC	Billings to Salt Lake City	81	93.8%	-6.6 min	1.2%
BIL–DFW	Billings to Dallas/Fort Worth	60	91.7%	-6.7 min	0.0%
BIL–MSP	Billings to Minneapolis	32	90.6%	18.7 min	0.0%
BIL–ORD	Billings to Chicago	30	93.3%	-3.5 min	0.0%
BIL–AZA	Billings to Phoenix	13	84.6%	6.1 min	0.0%
BIL–LAS	Billings to Las Vegas	9	77.8%	8.3 min	0.0%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), September 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2024	Minutes
Air carrier	73.8%	38.6%	2,099
Late-arriving aircraft	19.9%	38.4%	566
National Aviation System	4.6%	18.2%	132
Extreme weather	1.6%	4.8%	46
Security	0.0%	0.1%	0

2,843 delay minutes on 34 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left BIL on time in September 2024?

92.0% of 375 scheduled domestic departures left less than 15 minutes late, and 90.7% reached their destination on time. The national figures that month were 84.4% and 83.9%.

How does that compare with a year earlier?

In September 2023, 88.9% of 253 departures left on time and 0.0% were cancelled, against 92.0% and 0.3% in September 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2024; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for BIL · methodology · corrections.