Oakland International in December 2025

72.6%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 2025, reporting carriers scheduled 2,646 domestic departures from Oakland International (OAK). 72.6% left less than 15 minutes late and 76.1% reached their destination on time; 0.6% were cancelled.

Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so OAK departures were 0.6 points above the national departure figure.

A year earlier, in December 2024, the airport had 3,179 departures with 77.4% leaving on time: a change of −4.8 points, with flights down 17%.

Flights arriving at OAK that month were on time 76.4% of the time (2,644 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 51%, air carrier 30% and national aviation system 18%.

On time 76.1%
Arrived 15+ minutes late 23.1%
Cancelled 0.6%
Diverted 0.2%

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

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

Measure	Dec 2025	Dec 2024	OAK, 12 months to Jul 2026	All reported flights, Dec 2025
Departed on time	72.6%	77.4%	75.5%	72.0%
Arrived on time	76.1%	82.1%	78.5%	71.9%
Cancelled	0.6%	0.8%	0.6%	1.5%
Average departure delay (late minutes only)	14.5 min	12.9 min	13.4 min	21.2 min
Scheduled departures a day	88	106	86	19,410
Scheduled departures	2,646	3,179	31,406	582,304

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	2,388	90%	75.0%	7.4 min	0.6%
OO SkyWest Airlines	100	4%	96.0%	-13.3 min	0.0%
HA Hawaiian Airlines	78	3%	87.2%	-12.0 min	0.0%
AS Alaska Airlines	68	3%	73.5%	5.8 min	1.5%
G4 Allegiant Air	12	0%	66.7%	25.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
OAK–SAN	Oakland to San Diego	261	57.5%	21.2 min	1.5%
OAK–LAS	Oakland to Las Vegas	248	81.9%	5.3 min	0.0%
OAK–BUR	Oakland to Burbank	232	76.3%	5.6 min	2.6%
OAK–SNA	Oakland to Santa Ana	198	81.3%	2.0 min	0.0%
OAK–LAX	Oakland to Los Angeles	180	76.1%	4.8 min	1.1%
OAK–PHX	Oakland to Phoenix	165	69.7%	14.4 min	0.0%
OAK–SEA	Oakland to Seattle	151	76.2%	5.9 min	0.7%
OAK–LGB	Oakland to Long Beach	142	78.9%	8.6 min	0.7%
OAK–DEN	Oakland to Denver	137	72.3%	8.9 min	0.0%
OAK–ONT	Oakland to Ontario	121	77.7%	2.2 min	0.0%
OAK–PDX	Oakland to Portland	121	72.7%	11.2 min	0.0%
OAK–SLC	Oakland to Salt Lake City	121	85.1%	-5.4 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 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2025	Minutes
Air carrier	29.7%	33.3%	8,989
Late-arriving aircraft	51.4%	41.1%	15,570
National Aviation System	18.3%	19.1%	5,528
Extreme weather	0.2%	6.4%	71
Security	0.4%	0.2%	112

30,270 delay minutes on 612 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 2025?

72.6% of 2,646 scheduled domestic departures left less than 15 minutes late, and 76.1% reached their destination on time. The national figures that month were 72.0% and 71.9%.

How does that compare with a year earlier?

In December 2024, 77.4% of 3,179 departures left on time and 0.8% were cancelled, against 72.6% and 0.6% in December 2025.

Provenance

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