Spirit Airlines in September 2025

83.2%arrived 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, Spirit Airlines (NK) reported 15,058 scheduled domestic flights. 83.2% arrived on time, 0.9% were cancelled and 0.3% diverted.

All reporting carriers together recorded 82.8% on time and 0.5% cancelled that month, so the carrier was level with the combined figure.

A year earlier, in September 2024, it reported 20,399 flights with 81.6% on time: a change of +1.6 points.

Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 35%, air carrier 31% and late-arriving aircraft 30%.

On time 83.2%
Arrived 15+ minutes late 15.7%
Cancelled 0.9%
Diverted 0.3%

Every scheduled domestic flight reported by Spirit Airlines in September 2025.

September 2025 against a year earlier, the carrier's year and all carriers

Measure	Sep 2025	Sep 2024	NK, 12 months to Jul 2026	All carriers, Sep 2025
Arrived on time	83.2%	81.6%	69.8%	82.8%
Departed on time	81.7%	81.4%	69.6%	83.1%
Cancelled	0.9%	1.2%	3.9%	0.5%
Average arrival delay	1.0 min	1.0 min	12.2 min	2.3 min
Scheduled flights a day	502	680	321	18,748
Scheduled flights	15,058	20,399	117,136	562,439

62 airports and 498 routes had NK flights that month.

Busiest airports that month

Airport	Departures	On time	Avg arrival delay	Cancelled
FLL Fort Lauderdale	1,807	79.6%	3.6 min	0.6%
MCO Orlando	1,492	86.1%	-4.0 min	0.5%
LAS Las Vegas	1,344	80.2%	7.4 min	1.1%
DTW Detroit	931	85.5%	-1.3 min	0.4%
EWR Newark	710	80.0%	3.1 min	2.4%
IAH Houston	618	84.8%	0.0 min	0.5%
LAX Los Angeles	596	86.7%	-3.7 min	0.7%
ATL Atlanta	529	88.3%	-1.0 min	0.2%
ORD Chicago	471	87.3%	-4.6 min	0.4%
LGA New York	431	87.2%	-1.4 min	0.7%
BWI Baltimore	429	86.7%	-4.6 min	1.2%
DFW Dallas/Fort Worth	421	81.0%	6.1 min	1.4%
TPA Tampa	389	87.4%	-0.9 min	0.5%
MSY New Orleans	382	82.5%	1.4 min	0.5%
MIA Miami	354	73.2%	9.5 min	0.3%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of NK flights that arrived on time, by scheduled departure hour (local time at each origin), September 2025.

Delay causes

BTS cause category	Share of delay minutes	All carriers, Sep 2025	Minutes
Air carrier	31.2%	34.3%	58,244
Late-arriving aircraft	29.7%	37.4%	55,447
National Aviation System	35.2%	22.6%	65,566
Extreme weather	3.7%	5.6%	6,925
Security	0.1%	0.1%	211

186,393 delay minutes on 2,358 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

What share of Spirit Airlines flights were on time in September 2025?

83.2% of 15,058 scheduled domestic flights arrived less than 15 minutes late; all reporting carriers together recorded 82.8% that month.

How does that compare with a year earlier?

In September 2024 the carrier reported 20,399 flights with 81.6% on time and 1.2% cancelled, against 83.2% and 0.9% in September 2025.

Provenance

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