MBS International in May 2025

90.0%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 May 2025, reporting carriers scheduled 211 domestic departures from MBS International (MBS). 90.0% left less than 15 minutes late and 88.6% reached their destination on time; 0.0% were cancelled.

Nationally that month, 76.7% of flights departed on time and 75.4% arrived on time, so MBS departures were 13.3 points above the national departure figure.

A year earlier, in May 2024, the airport had 179 departures with 76.0% leaving on time: a change of +14.0 points, with flights up 18%.

Flights arriving at MBS that month were on time 88.2% of the time (211 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 39%, air carrier 36% and national aviation system 25%.

On time 88.6%
Arrived 15+ minutes late 11.4%
Cancelled 0.0%
Diverted 0.0%

Every scheduled departure from MBS in May 2025, judged by arrival at the destination.

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

Measure	May 2025	May 2024	MBS, 12 months to Jul 2026	All reported flights, May 2025
Departed on time	90.0%	76.0%	76.6%	76.7%
Arrived on time	88.6%	74.9%	72.9%	75.4%
Cancelled	0.0%	2.2%	2.0%	1.0%
Average departure delay (late minutes only)	8.6 min	19.7 min	27.1 min	17.5 min
Scheduled departures a day	7	6	6	20,188
Scheduled departures	211	179	2,061	605,648

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	211	100%	88.6%	1.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
MBS–DTW	Saginaw/Bay City/Midland to Detroit	118	94.9%	-7.4 min	0.0%
MBS–ORD	Saginaw/Bay City/Midland to Chicago	93	80.6%	11.6 min	0.0%

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), May 2025.

Delay causes

BTS cause category	Share of delay minutes	National, May 2025	Minutes
Air carrier	36.2%	29.3%	670
Late-arriving aircraft	38.9%	37.8%	721
National Aviation System	24.9%	25.9%	461
Extreme weather	0.0%	6.9%	0
Security	0.0%	0.1%	0

1,852 delay minutes on 24 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 May 2025?

90.0% of 211 scheduled domestic departures left less than 15 minutes late, and 88.6% reached their destination on time. The national figures that month were 76.7% and 75.4%.

How does that compare with a year earlier?

In May 2024, 76.0% of 179 departures left on time and 2.2% were cancelled, against 90.0% and 0.0% in May 2025.

Provenance

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