MBS International in December 2023

90.4%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 December 2023, reporting carriers scheduled 156 domestic departures from MBS International (MBS). 90.4% left less than 15 minutes late and 87.8% reached their destination on time; 0.0% were cancelled.

Nationally that month, 83.1% of flights departed on time and 83.8% arrived on time, so MBS departures were 7.3 points above the national departure figure.

Flights arriving at MBS that month were on time 87.2% of the time (156 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 41%, air carrier 34% and national aviation system 20%.

On time 87.8%
Arrived 15+ minutes late 11.5%
Cancelled 0.0%
Diverted 0.6%

Every scheduled departure from MBS in December 2023, judged by arrival at the destination.

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

Measure	Dec 2023	Year earlier	MBS, 12 months to Jul 2026	All reported flights, Dec 2023
Departed on time	90.4%	—	76.6%	83.1%
Arrived on time	87.8%	—	72.9%	83.8%
Cancelled	0.0%	—	2.0%	0.4%
Average departure delay (late minutes only)	6.9 min	—	27.1 min	11.6 min
Scheduled departures a day	5	—	6	19,013
Scheduled departures	156	—	2,061	570,394

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	156	100%	87.8%	-7.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MBS–ORD	Saginaw/Bay City/Midland to Chicago	79	79.7%	1.8 min	0.0%
MBS–DTW	Saginaw/Bay City/Midland to Detroit	77	96.1%	-16.4 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), December 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2023	Minutes
Air carrier	33.9%	37.1%	325
Late-arriving aircraft	40.5%	38.8%	388
National Aviation System	19.8%	17.6%	190
Extreme weather	5.8%	6.2%	56
Security	0.0%	0.3%	0

959 delay minutes on 18 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 MBS on time in December 2023?

90.4% of 156 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 83.8%.

How does that compare with a year earlier?

December 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 December 2023; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for MBS · methodology · corrections.