Oakland International in December 2023

78.1%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 December 2023, reporting carriers scheduled 3,962 domestic departures from Oakland International (OAK). 78.1% left less than 15 minutes late and 79.8% reached their destination on time; 0.9% were cancelled.

Nationally that month, 83.1% of flights departed on time and 83.8% arrived on time, so OAK departures were 5.0 points below the national departure figure.

Flights arriving at OAK that month were on time 85.2% of the time (3,958 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 44%, air carrier 40% and national aviation system 13%.

On time 79.8%
Arrived 15+ minutes late 19.2%
Cancelled 0.9%
Diverted 0.1%

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

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

Measure	Dec 2023	Year earlier	OAK, 12 months to Jul 2026	All reported flights, Dec 2023
Departed on time	78.1%	—	75.5%	83.1%
Arrived on time	79.8%	—	78.5%	83.8%
Cancelled	0.9%	—	0.6%	0.4%
Average departure delay (late minutes only)	11.9 min	—	13.4 min	11.6 min
Scheduled departures a day	132	—	86	19,013
Scheduled departures	3,962	—	31,406	570,394

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	3,366	85%	79.7%	4.2 min	0.7%
NK Spirit Airlines	198	5%	80.3%	4.2 min	0.5%
OO SkyWest Airlines	188	5%	88.3%	-2.1 min	0.0%
HA Hawaiian Airlines	87	2%	58.6%	9.7 min	12.6%
AS Alaska Airlines	62	2%	82.3%	4.2 min	0.0%
DL Delta Air Lines	46	1%	91.3%	-7.2 min	0.0%
G4 Allegiant Air	15	0%	73.3%	36.1 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
OAK–LAS	Oakland to Las Vegas	437	78.5%	8.2 min	0.9%
OAK–LAX	Oakland to Los Angeles	351	81.2%	1.2 min	1.4%
OAK–SAN	Oakland to San Diego	322	79.8%	5.4 min	0.3%
OAK–BUR	Oakland to Burbank	268	79.9%	1.4 min	2.6%
OAK–SNA	Oakland to Santa Ana	249	83.1%	-0.8 min	0.0%
OAK–PDX	Oakland to Portland	238	86.6%	0.3 min	1.3%
OAK–PHX	Oakland to Phoenix	183	78.7%	8.4 min	0.0%
OAK–SEA	Oakland to Seattle	183	80.9%	2.1 min	0.0%
OAK–SLC	Oakland to Salt Lake City	183	84.2%	-0.6 min	0.0%
OAK–DEN	Oakland to Denver	180	83.9%	4.4 min	0.0%
OAK–LGB	Oakland to Long Beach	156	90.4%	-2.2 min	0.6%
OAK–ONT	Oakland to Ontario	152	86.2%	1.7 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), December 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2023	Minutes
Air carrier	39.6%	37.1%	14,931
Late-arriving aircraft	43.8%	38.8%	16,506
National Aviation System	13.1%	17.6%	4,950
Extreme weather	3.2%	6.2%	1,211
Security	0.2%	0.3%	75

37,673 delay minutes on 759 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 December 2023?

78.1% of 3,962 scheduled domestic departures left less than 15 minutes late, and 79.8% reached their destination on time. The national figures that month were 83.1% and 83.8%.

How does that compare with a year earlier?

December 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 December 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.