San Francisco International in June 2026

63.3%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 13,415 domestic departures from San Francisco International (SFO). 63.3% left less than 15 minutes late and 66.4% reached their destination on time; 0.7% were cancelled.

Nationally that month, 72.2% of flights departed on time and 72.8% arrived on time, so SFO departures were 8.9 points below the national departure figure.

A year earlier, in June 2025, the airport had 12,622 departures with 79.6% leaving on time: a change of −16.3 points, with flights up 6%.

Flights arriving at SFO that month were on time 48.3% of the time (13,452 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 52%, air carrier 25% and national aviation system 22%.

On time 66.4%
Arrived 15+ minutes late 32.6%
Cancelled 0.7%
Diverted 0.3%

Every scheduled departure from SFO 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	SFO, 12 months to Jul 2026	All reported flights, Jun 2026
Departed on time	63.3%	79.6%	75.1%	72.2%
Arrived on time	66.4%	77.2%	75.6%	72.8%
Cancelled	0.7%	0.6%	1.0%	1.6%
Average departure delay (late minutes only)	25.6 min	13.6 min	17.8 min	20.6 min
Scheduled departures a day	447	421	404	20,253
Scheduled departures	13,415	12,622	147,566	607,577

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
UA United Airlines	5,699	42%	74.4%	7.2 min	0.2%
OO SkyWest Airlines	2,549	19%	61.6%	19.5 min	0.8%
DL Delta Air Lines	1,266	9%	64.1%	14.4 min	0.6%
AA American Airlines	1,156	9%	67.1%	26.1 min	2.2%
AS Alaska Airlines	965	7%	68.6%	9.4 min	0.6%
WN Southwest Airlines	954	7%	35.7%	38.7 min	0.8%
B6 JetBlue Airways	435	3%	65.1%	17.8 min	0.9%
F9 Frontier Airlines	391	3%	55.5%	31.7 min	3.3%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SFO–LAX	San Francisco to Los Angeles	1,079	60.6%	16.2 min	0.1%
SFO–SEA	San Francisco to Seattle	633	59.7%	18.2 min	0.6%
SFO–JFK	San Francisco to New York	611	69.7%	9.8 min	1.1%
SFO–SAN	San Francisco to San Diego	602	53.0%	25.7 min	1.8%
SFO–ORD	San Francisco to Chicago	530	69.1%	19.4 min	1.3%
SFO–LAS	San Francisco to Las Vegas	511	60.7%	24.4 min	0.6%
SFO–BOS	San Francisco to Boston	502	68.3%	11.6 min	0.8%
SFO–DEN	San Francisco to Denver	494	63.4%	16.5 min	0.2%
SFO–DFW	San Francisco to Dallas/Fort Worth	424	57.8%	33.8 min	3.5%
SFO–PHX	San Francisco to Phoenix	384	64.3%	14.5 min	0.3%
SFO–SNA	San Francisco to Santa Ana	373	67.8%	14.6 min	1.3%
SFO–EWR	San Francisco to Newark	371	76.5%	6.5 min	0.3%

By scheduled departure hour

100

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	24.5%	30.8%	71,335
Late-arriving aircraft	51.6%	42.1%	150,203
National Aviation System	21.5%	20.3%	62,544
Extreme weather	2.3%	6.7%	6,806
Security	0.0%	0.1%	50

290,938 delay minutes on 4,373 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 SFO on time in June 2026?

63.3% of 13,415 scheduled domestic departures left less than 15 minutes late, and 66.4% 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, 79.6% of 12,622 departures left on time and 0.6% were cancelled, against 63.3% and 0.7% 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 SFO · methodology · corrections.