San Francisco International in January 2025

85.5%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 January 2025, reporting carriers scheduled 10,839 domestic departures from San Francisco International (SFO). 85.5% left less than 15 minutes late and 85.7% reached their destination on time; 0.7% were cancelled.

Nationally that month, 79.3% of flights departed on time and 78.6% arrived on time, so SFO departures were 6.2 points above the national departure figure.

A year earlier, in January 2024, the airport had 10,133 departures with 73.8% leaving on time: a change of +11.7 points, with flights up 7%.

Flights arriving at SFO that month were on time 83.8% of the time (10,832 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 41%, air carrier 36% and national aviation system 17%.

On time 85.7%
Arrived 15+ minutes late 13.2%
Cancelled 0.7%
Diverted 0.4%

Every scheduled departure from SFO in January 2025, judged by arrival at the destination.

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

Measure	Jan 2025	Jan 2024	SFO, 12 months to Jul 2026	All reported flights, Jan 2025
Departed on time	85.5%	73.8%	75.1%	79.3%
Arrived on time	85.7%	73.9%	75.6%	78.6%
Cancelled	0.7%	5.7%	1.0%	3.0%
Average departure delay (late minutes only)	10.6 min	16.8 min	17.8 min	14.0 min
Scheduled departures a day	361	338	404	17,992
Scheduled departures	10,839	10,133	147,566	539,747

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
UA United Airlines	4,298	40%	87.8%	-5.3 min	0.9%
OO SkyWest Airlines	2,578	24%	84.4%	-0.6 min	0.5%
DL Delta Air Lines	948	9%	87.4%	-1.8 min	0.7%
AA American Airlines	866	8%	85.2%	-0.2 min	1.8%
AS Alaska Airlines	780	7%	84.7%	-0.1 min	0.0%
WN Southwest Airlines	591	5%	80.0%	4.3 min	0.3%
F9 Frontier Airlines	375	3%	74.9%	11.8 min	0.5%
B6 JetBlue Airways	337	3%	87.5%	-4.0 min	0.0%
HA Hawaiian Airlines	66	1%	92.4%	1.9 min	3.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
SFO–LAX	San Francisco to Los Angeles	849	86.8%	-0.1 min	0.0%
SFO–SEA	San Francisco to Seattle	526	87.6%	-2.2 min	0.0%
SFO–LAS	San Francisco to Las Vegas	523	78.6%	5.9 min	0.0%
SFO–SAN	San Francisco to San Diego	523	82.2%	4.6 min	0.8%
SFO–JFK	San Francisco to New York	498	88.6%	-4.3 min	0.4%
SFO–DEN	San Francisco to Denver	477	82.6%	3.6 min	0.4%
SFO–PHX	San Francisco to Phoenix	381	86.1%	0.6 min	0.3%
SFO–ORD	San Francisco to Chicago	339	84.7%	-3.4 min	0.3%
SFO–DFW	San Francisco to Dallas/Fort Worth	323	81.1%	1.5 min	4.6%
SFO–EWR	San Francisco to Newark	313	87.9%	-7.0 min	0.0%
SFO–BOS	San Francisco to Boston	306	88.6%	-5.6 min	0.3%
SFO–SNA	San Francisco to Santa Ana	303	80.2%	1.5 min	1.7%

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), January 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2025	Minutes
Air carrier	36.1%	36.2%	34,834
Late-arriving aircraft	41.4%	34.7%	39,935
National Aviation System	17.2%	19.9%	16,624
Extreme weather	5.2%	9.1%	5,043
Security	0.1%	0.2%	78

96,514 delay minutes on 1,432 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 January 2025?

85.5% of 10,839 scheduled domestic departures left less than 15 minutes late, and 85.7% reached their destination on time. The national figures that month were 79.3% and 78.6%.

How does that compare with a year earlier?

In January 2024, 73.8% of 10,133 departures left on time and 5.7% were cancelled, against 85.5% and 0.7% in January 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for January 2025; 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.