Scott AFB MidAmerica St Louis in December 2025

78.2%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 2025, reporting carriers scheduled 101 domestic departures from Scott AFB MidAmerica St Louis (BLV). 78.2% left less than 15 minutes late and 73.3% reached their destination on time; 1.0% were cancelled.

Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so BLV departures were 6.2 points above the national departure figure.

A year earlier, in December 2024, the airport had 88 departures with 59.1% leaving on time: a change of +19.1 points, with flights up 15%.

Flights arriving at BLV that month were on time 83.2% of the time (101 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, extreme weather 47%, late-arriving aircraft 35% and national aviation system 11%.

On time 73.3%
Arrived 15+ minutes late 25.7%
Cancelled 1.0%
Diverted 0.0%

Every scheduled departure from BLV in December 2025, judged by arrival at the destination.

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

Measure	Dec 2025	Dec 2024	BLV, 12 months to Jul 2026	All reported flights, Dec 2025
Departed on time	78.2%	59.1%	72.4%	72.0%
Arrived on time	73.3%	63.6%	69.2%	71.9%
Cancelled	1.0%	4.5%	0.9%	1.5%
Average departure delay (late minutes only)	25.4 min	54.4 min	32.4 min	21.2 min
Scheduled departures a day	3	3	4	19,410
Scheduled departures	101	88	1,395	582,304

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
G4 Allegiant Air	101	100%	73.3%	13.2 min	1.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BLV–VPS	Belleville to Valparaiso	26	76.9%	-6.4 min	3.8%
BLV–PGD	Belleville to Punta Gorda	24	54.2%	22.8 min	0.0%
BLV–PIE	Belleville to St. Petersburg	17	70.6%	66.4 min	0.0%
BLV–SFB	Belleville to Sanford	15	86.7%	1.4 min	0.0%
BLV–SRQ	Belleville to Sarasota/Bradenton	11	81.8%	-12.1 min	0.0%
BLV–GUF	Belleville to Gulf Shores	8	87.5%	-10.9 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), December 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2025	Minutes
Air carrier	7.0%	33.3%	180
Late-arriving aircraft	35.1%	41.1%	901
National Aviation System	10.6%	19.1%	273
Extreme weather	47.3%	6.4%	1,214
Security	0.0%	0.2%	0

2,568 delay minutes on 26 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 BLV on time in December 2025?

78.2% of 101 scheduled domestic departures left less than 15 minutes late, and 73.3% reached their destination on time. The national figures that month were 72.0% and 71.9%.

How does that compare with a year earlier?

In December 2024, 59.1% of 88 departures left on time and 4.5% were cancelled, against 78.2% and 1.0% in December 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for BLV · methodology · corrections.