Billings Logan International in September 2023

88.9%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 2023, reporting carriers scheduled 253 domestic departures from Billings Logan International (BIL). 88.9% left less than 15 minutes late and 88.9% reached their destination on time; 0.0% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.1% arrived on time, so BIL departures were 8.4 points above the national departure figure.

Flights arriving at BIL that month were on time 85.4% of the time (253 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 53%, extreme weather 21% and national aviation system 15%.

On time 88.9%
Arrived 15+ minutes late 10.7%
Cancelled 0.0%
Diverted 0.4%

Every scheduled departure from BIL in September 2023, judged by arrival at the destination.

September 2023 against a year earlier, the airport's year and the nation

Measure	Sep 2023	Year earlier	BIL, 12 months to Jul 2026	All reported flights, Sep 2023
Departed on time	88.9%	—	87.4%	80.5%
Arrived on time	88.9%	—	84.7%	80.1%
Cancelled	0.0%	—	0.6%	1.2%
Average departure delay (late minutes only)	6.3 min	—	11.8 min	14.1 min
Scheduled departures a day	8	—	13	18,978
Scheduled departures	253	—	4,642	569,338

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
DL Delta Air Lines	62	25%	93.5%	-5.7 min	0.0%
MQ Envoy Air	60	24%	88.3%	-4.8 min	0.0%
UA United Airlines	60	24%	90.0%	-9.9 min	0.0%
OO SkyWest Airlines	54	21%	88.9%	-4.3 min	0.0%
G4 Allegiant Air	17	7%	70.6%	25.6 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BIL–SLC	Billings to Salt Lake City	80	93.8%	-7.4 min	0.0%
BIL–DEN	Billings to Denver	64	89.1%	-9.9 min	0.0%
BIL–DFW	Billings to Dallas/Fort Worth	60	88.3%	-4.8 min	0.0%
BIL–MSP	Billings to Minneapolis	32	87.5%	1.2 min	0.0%
BIL–LAS	Billings to Las Vegas	9	88.9%	8.4 min	0.0%
BIL–AZA	Billings to Phoenix	8	50.0%	45.0 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 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2023	Minutes
Air carrier	52.6%	36.4%	769
Late-arriving aircraft	5.8%	38.3%	85
National Aviation System	14.8%	19.9%	216
Extreme weather	20.8%	5.1%	304
Security	6.0%	0.2%	88

1,462 delay minutes on 27 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 2023?

88.9% of 253 scheduled domestic departures left less than 15 minutes late, and 88.9% 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 BIL · methodology · corrections.