SkyWest Airlines in September 2025

84.2%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, SkyWest Airlines (OO) reported 69,406 scheduled domestic flights. 84.2% arrived on time, 0.4% were cancelled and 0.2% diverted.

All reporting carriers together recorded 82.8% on time and 0.5% cancelled that month, so the carrier was 1.4 points above the combined figure.

A year earlier, in September 2024, it reported 64,633 flights with 84.3% on time: a change of −0.1 points.

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 51%, late-arriving aircraft 19% and national aviation system 18%.

On time 84.2%
Arrived 15+ minutes late 15.2%
Cancelled 0.4%
Diverted 0.2%

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

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

Measure	Sep 2025	Sep 2024	OO, 12 months to Jul 2026	All carriers, Sep 2025
Arrived on time	84.2%	84.3%	77.4%	82.8%
Departed on time	86.3%	85.7%	79.5%	83.1%
Cancelled	0.4%	0.2%	1.8%	0.5%
Average arrival delay	1.4 min	2.2 min	9.6 min	2.3 min
Scheduled flights a day	2,314	2,154	2,340	18,748
Scheduled flights	69,406	64,633	854,130	562,439

239 airports and 1,201 routes had OO flights that month.

Busiest airports that month

Airport	Departures	On time	Avg arrival delay	Cancelled
DEN Denver	6,403	84.3%	1.4 min	0.0%
ORD Chicago	6,195	76.6%	7.1 min	0.6%
LAX Los Angeles	3,355	89.2%	-4.8 min	0.1%
SLC Salt Lake City	2,850	94.3%	-6.9 min	0.0%
SEA Seattle	2,658	87.3%	-3.0 min	0.1%
SFO San Francisco	2,563	83.8%	1.6 min	0.2%
DTW Detroit	2,282	87.9%	0.3 min	0.0%
MSP Minneapolis	2,273	86.6%	1.4 min	0.0%
DFW Dallas/Fort Worth	2,065	79.4%	4.9 min	2.1%
PHX Phoenix	1,738	83.0%	4.2 min	1.2%
SAN San Diego	1,145	82.6%	-0.4 min	1.9%
IAH Houston	936	88.2%	-0.2 min	0.0%
PDX Portland	924	85.0%	-1.2 min	0.0%
BOI Boise	816	85.7%	0.0 min	0.2%
SMF Sacramento	811	84.6%	-1.7 min	0.2%

By scheduled departure hour

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

Share of OO 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	51.1%	34.3%	372,078
Late-arriving aircraft	18.5%	37.4%	134,860
National Aviation System	18.1%	22.6%	131,450
Extreme weather	12.2%	5.6%	88,572
Security	0.1%	0.1%	1,075

728,035 delay minutes on 10,551 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 SkyWest Airlines flights were on time in September 2025?

84.2% of 69,406 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 64,633 flights with 84.3% on time and 0.2% cancelled, against 84.2% 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, totals and averages only. The site's data runs through July 2026. Full record for SkyWest Airlines · methodology · corrections.