Scott AFB MidAmerica St Louis in May 2026

70.7%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 2026, reporting carriers scheduled 140 domestic departures from Scott AFB MidAmerica St Louis (BLV). 70.7% left less than 15 minutes late and 62.1% reached their destination on time; 0.7% were cancelled.

Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so BLV departures were 6.4 points below the national departure figure.

A year earlier, in May 2025, the airport had 137 departures with 72.3% leaving on time: a change of −1.6 points, with flights up 2%.

Flights arriving at BLV that month were on time 72.9% of the time (140 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 68%, air carrier 19% and national aviation system 11%.

On time 62.1%
Arrived 15+ minutes late 37.1%
Cancelled 0.7%
Diverted 0.0%

Every scheduled departure from BLV in May 2026, judged by arrival at the destination.

May 2026 against a year earlier, the airport's year and the nation

Measure	May 2026	May 2025	BLV, 12 months to Jul 2026	All reported flights, May 2026
Departed on time	70.7%	72.3%	72.4%	77.1%
Arrived on time	62.1%	67.9%	69.2%	77.6%
Cancelled	0.7%	0.0%	0.9%	0.9%
Average departure delay (late minutes only)	36.4 min	28.2 min	32.4 min	16.0 min
Scheduled departures a day	5	5	4	20,391
Scheduled departures	140	137	1,395	611,735

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
G4 Allegiant Air	140	100%	62.1%	33.2 min	0.7%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BLV–VPS	Belleville to Valparaiso	37	51.4%	37.0 min	0.0%
BLV–PGD	Belleville to Punta Gorda	19	84.2%	-3.9 min	0.0%
BLV–SFB	Belleville to Sanford	16	62.5%	15.9 min	6.3%
BLV–PIE	Belleville to St. Petersburg	13	46.2%	106.2 min	0.0%
BLV–GUF	Belleville to Gulf Shores	11	63.6%	45.7 min	0.0%
BLV–FLL	Belleville to Fort Lauderdale	9	44.4%	74.6 min	0.0%
BLV–JAX	Belleville to Jacksonville	9	44.4%	55.2 min	0.0%
BLV–LAS	Belleville to Las Vegas	9	88.9%	-3.2 min	0.0%
BLV–SRQ	Belleville to Sarasota/Bradenton	9	88.9%	-7.6 min	0.0%
BLV–MYR	Belleville to Myrtle Beach	5	60.0%	9.8 min	0.0%
BLV–SAV	Belleville to Savannah	3	66.7%	28.0 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), May 2026.

Delay causes

BTS cause category	Share of delay minutes	National, May 2026	Minutes
Air carrier	19.2%	33.0%	1,029
Late-arriving aircraft	67.9%	40.4%	3,649
National Aviation System	10.6%	20.5%	567
Extreme weather	2.3%	6.0%	126
Security	0.0%	0.1%	0

5,371 delay minutes on 52 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 May 2026?

70.7% of 140 scheduled domestic departures left less than 15 minutes late, and 62.1% reached their destination on time. The national figures that month were 77.1% and 77.6%.

How does that compare with a year earlier?

In May 2025, 72.3% of 137 departures left on time and 0.0% were cancelled, against 70.7% and 0.7% in May 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 2026; 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.