Rapid City Regional in September 2025

86.3%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 September 2025, reporting carriers scheduled 496 domestic departures from Rapid City Regional (RAP). 86.3% left less than 15 minutes late and 83.5% reached their destination on time; 0.4% were cancelled.

Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so RAP departures were 3.2 points above the national departure figure.

A year earlier, in September 2024, the airport had 547 departures with 87.2% leaving on time: a change of −0.9 points, with flights down 9%.

Flights arriving at RAP that month were on time 84.9% of the time (496 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 33%, national aviation system 33% and late-arriving aircraft 25%.

On time 83.5%
Arrived 15+ minutes late 16.1%
Cancelled 0.4%
Diverted 0.0%

Every scheduled departure from RAP in September 2025, judged by arrival at the destination.

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

Measure	Sep 2025	Sep 2024	RAP, 12 months to Jul 2026	All reported flights, Sep 2025
Departed on time	86.3%	87.2%	81.3%	83.1%
Arrived on time	83.5%	87.2%	78.4%	82.8%
Cancelled	0.4%	0.0%	1.3%	0.5%
Average departure delay (late minutes only)	9.7 min	11.6 min	17.2 min	12.2 min
Scheduled departures a day	17	18	16	18,748
Scheduled departures	496	547	5,669	562,439

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	217	44%	82.0%	2.6 min	0.0%
MQ Envoy Air	162	33%	84.6%	2.7 min	1.2%
UA United Airlines	95	19%	87.4%	0.3 min	0.0%
G4 Allegiant Air	21	4%	71.4%	11.2 min	0.0%
DL Delta Air Lines	1	0%	100.0%	-18.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
RAP–DEN	Rapid City to Denver	262	82.4%	2.6 min	0.0%
RAP–DFW	Rapid City to Dallas/Fort Worth	90	85.6%	3.8 min	1.1%
RAP–ORD	Rapid City to Chicago	74	82.4%	3.0 min	1.4%
RAP–CLT	Rapid City to Charlotte	30	90.0%	-3.5 min	0.0%
RAP–MSP	Rapid City to Minneapolis	18	94.4%	-6.6 min	0.0%
RAP–AZA	Rapid City to Phoenix	13	76.9%	2.2 min	0.0%
RAP–LAS	Rapid City to Las Vegas	8	62.5%	25.8 min	0.0%
RAP–ATL	Rapid City to Atlanta	1	100.0%	-18.0 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), September 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2025	Minutes
Air carrier	33.3%	34.3%	1,607
Late-arriving aircraft	24.7%	37.4%	1,192
National Aviation System	32.8%	22.6%	1,587
Extreme weather	9.2%	5.6%	446
Security	0.0%	0.1%	0

4,832 delay minutes on 80 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 RAP on time in September 2025?

86.3% of 496 scheduled domestic departures left less than 15 minutes late, and 83.5% reached their destination on time. The national figures that month were 83.1% and 82.8%.

How does that compare with a year earlier?

In September 2024, 87.2% of 547 departures left on time and 0.0% were cancelled, against 86.3% and 0.4% in September 2025.

Provenance

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