Spirit Airlines in August 2025

76.9%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 August 2025, Spirit Airlines (NK) reported 17,155 scheduled domestic flights. 76.9% arrived on time, 0.5% were cancelled and 0.4% diverted.

All reporting carriers together recorded 76.3% on time and 1.1% cancelled that month, so the carrier was 0.6 points above the combined figure.

A year earlier, in August 2024, it reported 24,676 flights with 67.1% on time: a change of +9.8 points.

Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 43%, late-arriving aircraft 28% and air carrier 23%.

On time 76.9%
Arrived 15+ minutes late 22.2%
Cancelled 0.5%
Diverted 0.4%

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

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

Measure	Aug 2025	Aug 2024	NK, 12 months to Jul 2026	All carriers, Aug 2025
Arrived on time	76.9%	67.1%	69.8%	76.3%
Departed on time	77.4%	66.4%	69.6%	76.8%
Cancelled	0.5%	4.0%	3.9%	1.1%
Average arrival delay	8.0 min	16.2 min	12.2 min	9.2 min
Scheduled flights a day	572	823	321	20,079
Scheduled flights	17,155	24,676	117,136	602,378

63 airports and 575 routes had NK flights that month.

Busiest airports that month

Airport	Departures	On time	Avg arrival delay	Cancelled
FLL Fort Lauderdale	1,839	76.8%	7.1 min	0.2%
MCO Orlando	1,700	64.6%	19.9 min	0.5%
LAS Las Vegas	1,411	78.3%	6.6 min	0.4%
DTW Detroit	1,249	83.3%	1.9 min	0.3%
EWR Newark	769	76.1%	7.4 min	1.3%
IAH Houston	630	76.7%	7.3 min	0.6%
ATL Atlanta	627	76.6%	8.1 min	0.2%
LAX Los Angeles	604	87.6%	-1.0 min	0.2%
ORD Chicago	504	78.6%	12.0 min	0.8%
DFW Dallas/Fort Worth	501	77.2%	4.8 min	0.0%
MYR Myrtle Beach	482	76.3%	7.7 min	1.2%
BWI Baltimore	470	77.0%	3.6 min	1.3%
LGA New York	466	84.3%	-4.0 min	0.4%
TPA Tampa	390	79.0%	7.1 min	0.3%
MIA Miami	381	67.5%	17.5 min	1.0%

By scheduled departure hour

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), August 2025.

Delay causes

BTS cause category	Share of delay minutes	All carriers, Aug 2025	Minutes
Air carrier	23.1%	33.1%	65,263
Late-arriving aircraft	28.1%	40.5%	79,394
National Aviation System	42.9%	19.2%	121,159
Extreme weather	5.6%	7.0%	15,901
Security	0.3%	0.1%	931

282,648 delay minutes on 3,814 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 August 2025?

76.9% of 17,155 scheduled domestic flights arrived less than 15 minutes late; all reporting carriers together recorded 76.3% that month.

How does that compare with a year earlier?

In August 2024 the carrier reported 24,676 flights with 67.1% on time and 4.0% cancelled, against 76.9% and 0.5% in August 2025.

Provenance

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