Oakland International in August 2025

78.9%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 August 2025, reporting carriers scheduled 2,850 domestic departures from Oakland International (OAK). 78.9% left less than 15 minutes late and 80.8% reached their destination on time; 0.4% were cancelled.

Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so OAK departures were 2.1 points above the national departure figure.

A year earlier, in August 2024, the airport had 3,555 departures with 80.6% leaving on time: a change of −1.7 points, with flights down 20%.

Flights arriving at OAK that month were on time 81.5% of the time (2,848 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 47%, late-arriving aircraft 39% and national aviation system 14%.

On time 80.8%
Arrived 15+ minutes late 18.5%
Cancelled 0.4%
Diverted 0.3%

Every scheduled departure from OAK in August 2025, judged by arrival at the destination.

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

Measure	Aug 2025	Aug 2024	OAK, 12 months to Jul 2026	All reported flights, Aug 2025
Departed on time	78.9%	80.6%	75.5%	76.8%
Arrived on time	80.8%	82.3%	78.5%	76.3%
Cancelled	0.4%	0.6%	0.6%	1.1%
Average departure delay (late minutes only)	13.2 min	11.0 min	13.4 min	17.6 min
Scheduled departures a day	95	119	86	20,079
Scheduled departures	2,850	3,555	31,406	602,378

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	2,483	87%	81.0%	3.2 min	0.2%
OO SkyWest Airlines	112	4%	86.6%	2.2 min	0.0%
HA Hawaiian Airlines	87	3%	86.2%	27.6 min	4.6%
NK Spirit Airlines	83	3%	81.9%	7.1 min	0.0%
AS Alaska Airlines	56	2%	60.7%	29.4 min	1.8%
G4 Allegiant Air	29	1%	62.1%	88.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
OAK–LAS	Oakland to Las Vegas	326	82.2%	3.5 min	0.0%
OAK–SAN	Oakland to San Diego	282	71.6%	10.7 min	0.0%
OAK–BUR	Oakland to Burbank	257	84.0%	-1.3 min	0.4%
OAK–SNA	Oakland to Santa Ana	206	85.4%	-1.1 min	0.0%
OAK–SEA	Oakland to Seattle	199	70.4%	14.0 min	0.5%
OAK–LAX	Oakland to Los Angeles	185	77.3%	2.2 min	2.2%
OAK–SLC	Oakland to Salt Lake City	150	92.0%	-3.5 min	0.0%
OAK–LGB	Oakland to Long Beach	148	84.5%	0.3 min	0.0%
OAK–PHX	Oakland to Phoenix	143	81.1%	8.8 min	0.0%
OAK–DEN	Oakland to Denver	141	71.6%	10.2 min	0.0%
OAK–ONT	Oakland to Ontario	135	87.4%	-0.8 min	0.0%
OAK–PDX	Oakland to Portland	104	82.7%	3.1 min	0.0%

By scheduled departure hour

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

Share of departures that left less than 15 minutes late, by scheduled hour (local time), August 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2025	Minutes
Air carrier	46.7%	33.1%	14,367
Late-arriving aircraft	39.0%	40.5%	12,010
National Aviation System	13.7%	19.2%	4,204
Extreme weather	0.5%	7.0%	150
Security	0.1%	0.1%	29

30,760 delay minutes on 528 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 OAK on time in August 2025?

78.9% of 2,850 scheduled domestic departures left less than 15 minutes late, and 80.8% reached their destination on time. The national figures that month were 76.8% and 76.3%.

How does that compare with a year earlier?

In August 2024, 80.6% of 3,555 departures left on time and 0.6% were cancelled, against 78.9% and 0.4% in August 2025.

Provenance

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