Oakland International in September 2023

79.4%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 2023, reporting carriers scheduled 3,793 domestic departures from Oakland International (OAK). 79.4% left less than 15 minutes late and 81.8% reached their destination on time; 0.6% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.1% arrived on time, so OAK departures were 1.1 points below the national departure figure.

Flights arriving at OAK that month were on time 80.2% of the time (3,792 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 47%, air carrier 36% and national aviation system 15%.

On time 81.8%
Arrived 15+ minutes late 17.6%
Cancelled 0.6%
Diverted 0.1%

Every scheduled departure from OAK in September 2023, judged by arrival at the destination.

September 2023 against a year earlier, the airport's year and the nation

Measure	Sep 2023	Year earlier	OAK, 12 months to Jul 2026	All reported flights, Sep 2023
Departed on time	79.4%	—	75.5%	80.5%
Arrived on time	81.8%	—	78.5%	80.1%
Cancelled	0.6%	—	0.6%	1.2%
Average departure delay (late minutes only)	11.6 min	—	13.4 min	14.1 min
Scheduled departures a day	126	—	86	18,978
Scheduled departures	3,793	—	31,406	569,338

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	3,190	84%	81.5%	3.0 min	0.3%
NK Spirit Airlines	239	6%	77.0%	12.9 min	0.4%
OO SkyWest Airlines	165	4%	90.9%	-5.9 min	0.0%
HA Hawaiian Airlines	68	2%	67.6%	43.5 min	13.2%
AS Alaska Airlines	64	2%	87.5%	-9.1 min	0.0%
DL Delta Air Lines	56	1%	96.4%	-9.7 min	0.0%
G4 Allegiant Air	11	0%	90.9%	-2.9 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
OAK–LAS	Oakland to Las Vegas	421	72.0%	14.5 min	1.2%
OAK–LAX	Oakland to Los Angeles	373	83.4%	0.0 min	0.0%
OAK–SAN	Oakland to San Diego	321	79.1%	5.6 min	0.3%
OAK–BUR	Oakland to Burbank	285	86.3%	-0.2 min	1.4%
OAK–SEA	Oakland to Seattle	236	74.2%	5.6 min	0.0%
OAK–SNA	Oakland to Santa Ana	228	79.8%	4.8 min	0.4%
OAK–PDX	Oakland to Portland	193	82.9%	1.0 min	0.0%
OAK–DEN	Oakland to Denver	172	83.7%	1.2 min	0.0%
OAK–SLC	Oakland to Salt Lake City	172	89.0%	-3.6 min	0.0%
OAK–PHX	Oakland to Phoenix	169	81.1%	2.7 min	0.0%
OAK–ONT	Oakland to Ontario	143	76.9%	6.0 min	0.0%
OAK–LGB	Oakland to Long Beach	142	88.0%	-2.2 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), September 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2023	Minutes
Air carrier	35.8%	36.4%	12,266
Late-arriving aircraft	47.1%	38.3%	16,122
National Aviation System	15.2%	19.9%	5,204
Extreme weather	1.1%	5.1%	373
Security	0.8%	0.2%	272

34,237 delay minutes on 669 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 September 2023?

79.4% of 3,793 scheduled domestic departures left less than 15 minutes late, and 81.8% reached their destination on time. The national figures that month were 80.5% and 80.1%.

How does that compare with a year earlier?

September 2022 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2023; 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.