Oakland International in June 2026

64.6%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 June 2026, reporting carriers scheduled 2,597 domestic departures from Oakland International (OAK). 64.6% left less than 15 minutes late and 69.3% reached their destination on time; 0.4% were cancelled.

Nationally that month, 72.2% of flights departed on time and 72.8% arrived on time, so OAK departures were 7.6 points below the national departure figure.

A year earlier, in June 2025, the airport had 3,047 departures with 75.8% leaving on time: a change of −11.2 points, with flights down 15%.

Flights arriving at OAK that month were on time 68.6% of the time (2,590 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 58%, air carrier 31% and national aviation system 11%.

On time 69.3%
Arrived 15+ minutes late 30.2%
Cancelled 0.4%
Diverted 0.2%

Every scheduled departure from OAK in June 2026, judged by arrival at the destination.

June 2026 against a year earlier, the airport's year and the nation

Measure	Jun 2026	Jun 2025	OAK, 12 months to Jul 2026	All reported flights, Jun 2026
Departed on time	64.6%	75.8%	75.5%	72.2%
Arrived on time	69.3%	79.3%	78.5%	72.8%
Cancelled	0.4%	0.6%	0.6%	1.6%
Average departure delay (late minutes only)	18.6 min	13.9 min	13.4 min	20.6 min
Scheduled departures a day	87	102	86	20,253
Scheduled departures	2,597	3,047	31,406	607,577

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	2,232	86%	66.4%	12.5 min	0.4%
OO SkyWest Airlines	195	8%	85.6%	-1.7 min	1.0%
AS Alaska Airlines	170	7%	88.2%	-1.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
OAK–SAN	Oakland to San Diego	293	58.0%	20.2 min	1.0%
OAK–LAS	Oakland to Las Vegas	289	65.1%	16.4 min	0.3%
OAK–BUR	Oakland to Burbank	213	72.3%	8.7 min	0.5%
OAK–SNA	Oakland to Santa Ana	207	75.4%	2.4 min	1.4%
OAK–SEA	Oakland to Seattle	187	65.2%	15.3 min	0.0%
OAK–LAX	Oakland to Los Angeles	163	68.7%	15.4 min	0.6%
OAK–PHX	Oakland to Phoenix	157	69.4%	11.7 min	0.6%
OAK–DEN	Oakland to Denver	147	61.9%	14.3 min	0.0%
OAK–PDX	Oakland to Portland	123	66.7%	12.9 min	0.0%
OAK–SLC	Oakland to Salt Lake City	121	87.6%	-2.7 min	0.0%
OAK–LGB	Oakland to Long Beach	116	81.0%	-2.3 min	0.0%
OAK–ONT	Oakland to Ontario	112	74.1%	3.3 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), June 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jun 2026	Minutes
Air carrier	31.0%	30.8%	11,852
Late-arriving aircraft	57.5%	42.1%	21,958
National Aviation System	10.9%	20.3%	4,179
Extreme weather	0.5%	6.7%	182
Security	0.1%	0.1%	32

38,203 delay minutes on 783 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 June 2026?

64.6% of 2,597 scheduled domestic departures left less than 15 minutes late, and 69.3% reached their destination on time. The national figures that month were 72.2% and 72.8%.

How does that compare with a year earlier?

In June 2025, 75.8% of 3,047 departures left on time and 0.6% were cancelled, against 64.6% and 0.4% in June 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for June 2026; 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.