Oakland International in June 2025

75.8%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 2025, reporting carriers scheduled 3,047 domestic departures from Oakland International (OAK). 75.8% left less than 15 minutes late and 79.3% reached their destination on time; 0.6% were cancelled.

Nationally that month, 71.4% of flights departed on time and 70.3% arrived on time, so OAK departures were 4.4 points above the national departure figure.

A year earlier, in June 2024, the airport had 3,621 departures with 74.7% leaving on time: a change of +1.1 points, with flights down 16%.

Flights arriving at OAK that month were on time 74.0% of the time (3,045 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 50%, air carrier 33% and national aviation system 15%.

On time 79.3%
Arrived 15+ minutes late 20.1%
Cancelled 0.6%
Diverted 0.1%

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

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

Measure	Jun 2025	Jun 2024	OAK, 12 months to Jul 2026	All reported flights, Jun 2025
Departed on time	75.8%	74.7%	75.5%	71.4%
Arrived on time	79.3%	78.3%	78.5%	70.3%
Cancelled	0.6%	0.4%	0.6%	1.6%
Average departure delay (late minutes only)	13.9 min	13.2 min	13.4 min	22.1 min
Scheduled departures a day	102	121	86	20,386
Scheduled departures	3,047	3,621	31,406	611,575

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	2,606	86%	78.7%	5.2 min	0.6%
NK Spirit Airlines	136	4%	88.2%	-3.7 min	0.7%
OO SkyWest Airlines	113	4%	86.7%	3.8 min	0.0%
HA Hawaiian Airlines	85	3%	89.4%	9.2 min	0.0%
AS Alaska Airlines	60	2%	63.3%	6.4 min	0.0%
G4 Allegiant Air	40	1%	67.5%	53.0 min	0.0%
DL Delta Air Lines	7	0%	85.7%	-4.3 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
OAK–LAS	Oakland to Las Vegas	364	84.6%	2.6 min	0.5%
OAK–SAN	Oakland to San Diego	287	78.4%	5.9 min	1.4%
OAK–BUR	Oakland to Burbank	255	77.6%	4.3 min	2.4%
OAK–SNA	Oakland to Santa Ana	236	85.2%	-3.6 min	0.4%
OAK–SEA	Oakland to Seattle	220	68.2%	12.7 min	0.0%
OAK–LAX	Oakland to Los Angeles	185	82.7%	0.2 min	0.5%
OAK–PHX	Oakland to Phoenix	178	72.5%	9.4 min	0.0%
OAK–DEN	Oakland to Denver	155	66.5%	14.7 min	0.0%
OAK–SLC	Oakland to Salt Lake City	147	87.1%	0.3 min	0.0%
OAK–LGB	Oakland to Long Beach	142	84.5%	-1.9 min	0.7%
OAK–ONT	Oakland to Ontario	135	84.4%	3.3 min	0.0%
OAK–PDX	Oakland to Portland	117	78.6%	7.2 min	0.9%

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 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jun 2025	Minutes
Air carrier	32.6%	31.6%	10,965
Late-arriving aircraft	49.9%	40.6%	16,817
National Aviation System	15.2%	20.9%	5,126
Extreme weather	1.7%	6.9%	571
Security	0.6%	0.2%	201

33,680 delay minutes on 611 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 2025?

75.8% of 3,047 scheduled domestic departures left less than 15 minutes late, and 79.3% reached their destination on time. The national figures that month were 71.4% and 70.3%.

How does that compare with a year earlier?

In June 2024, 74.7% of 3,621 departures left on time and 0.4% were cancelled, against 75.8% and 0.6% in June 2025.

Provenance

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