Billings Logan International in August 2025

83.1%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 August 2025, reporting carriers scheduled 478 domestic departures from Billings Logan International (BIL). 83.1% left less than 15 minutes late and 78.0% reached their destination on time; 0.4% were cancelled.

Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so BIL departures were 6.3 points above the national departure figure.

A year earlier, in August 2024, the airport had 413 departures with 86.9% leaving on time: a change of −3.8 points, with flights up 16%.

Flights arriving at BIL that month were on time 78.0% of the time (478 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 43%, national aviation system 31% and late-arriving aircraft 16%.

On time 78.0%
Arrived 15+ minutes late 19.9%
Cancelled 0.4%
Diverted 1.7%

Every scheduled departure from BIL in August 2025, judged by arrival at the destination.

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

Measure	Aug 2025	Aug 2024	BIL, 12 months to Jul 2026	All reported flights, Aug 2025
Departed on time	83.1%	86.9%	87.4%	76.8%
Arrived on time	78.0%	83.5%	84.7%	76.3%
Cancelled	0.4%	0.7%	0.6%	1.1%
Average departure delay (late minutes only)	13.6 min	12.0 min	11.8 min	17.6 min
Scheduled departures a day	16	14	13	20,079
Scheduled departures	478	413	4,642	602,378

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	211	44%	76.3%	4.4 min	0.5%
MQ Envoy Air	124	26%	79.0%	16.3 min	0.8%
DL Delta Air Lines	63	13%	93.7%	-10.4 min	0.0%
UA United Airlines	62	13%	62.9%	14.4 min	0.0%
G4 Allegiant Air	18	4%	88.9%	1.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BIL–DEN	Billings to Denver	181	67.4%	10.8 min	0.6%
BIL–ORD	Billings to Chicago	93	77.4%	21.5 min	1.1%
BIL–SLC	Billings to Salt Lake City	93	91.4%	-7.9 min	0.0%
BIL–DFW	Billings to Dallas/Fort Worth	62	80.6%	2.3 min	0.0%
BIL–MSP	Billings to Minneapolis	31	90.3%	-5.6 min	0.0%
BIL–AZA	Billings to Phoenix	9	100.0%	-10.6 min	0.0%
BIL–LAS	Billings to Las Vegas	9	77.8%	12.9 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), August 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2025	Minutes
Air carrier	43.2%	33.1%	3,059
Late-arriving aircraft	15.8%	40.5%	1,122
National Aviation System	31.3%	19.2%	2,217
Extreme weather	9.6%	7.0%	681
Security	0.0%	0.1%	0

7,079 delay minutes on 95 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 August 2025?

83.1% of 478 scheduled domestic departures left less than 15 minutes late, and 78.0% reached their destination on time. The national figures that month were 76.8% and 76.3%.

How does that compare with a year earlier?

In August 2024, 86.9% of 413 departures left on time and 0.7% were cancelled, against 83.1% and 0.4% in August 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 2025; 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.