According to PlainFlights' airport traffic ranking (BTS On-Time Performance total flights), Stockton, CA (SCK) ranks #305 of 382 tracked US airports by total flights (most flights = #1). Stockton, CA posts bottom-quartile on-time performance among the 382 tracked U.S. airports, as a smaller regional airport.
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SCK on-time rate vs. the national average
Behind the U.S. average across all 382 tracked airports.
Volume vs. on-time rate
Where Stockton, CA sits on volume vs. on-time rate
Among the 382 U.S. airports in the BTS corpus, Stockton, CA handles more flight
volume than 20% of them, and has a higher on-time rate than
2% of them, placing it in the quadrant for quiet and delay-prone.
Flight volume and on-time rate are independent figures: a busy airport can still run
reliably, and a quiet one can still run late.
Stockton, CA vs. a 29-airport national peer sample, volume percentile vs. on-time-rate percentile.
Total flights (2020-2025): 7,206 ·
On-time rate: 72.6%
Delay Cause Breakdown
Top delay cause: Late Aircraft.
Total delay minutes95,739 min
Late Aircraft44,244 min · 46%
Carrier25,240 min · 26%
NAS (National Aviation System)15,236 min · 16%
Weather9,712 min · 10%
Security1,307 min · 1%
Source: U.S. DOT Bureau of Transportation Statistics, On-Time Performance
SCK - seasonal on-time pattern
Best: February (89.6%) · worst: June (79.7%)
SCK - on-time rate by year
2020–2025, year-over-year trend.
SCK - taxi-out and taxi-in (monthly)
Average taxi-out 11.6 min · taxi-in 6.3 min over the last 24 reported months (U.S. airport mean taxi-out ≈ 16.4 min).
SCK's average taxi-out (11.6 min) stays shorter than the recent U.S. airport mean (~16.4 min). Even the heaviest month (May 2024, 16.1 min) is milder than many hubs' typical book.
Two PlainFlights-derived comparison paths for Stockton, CA, both outside California so the neighborhoods are not same-state geography. Axes stay disjoint: volume peers exclude the on-time peer set. Same-state compare stays below.
The standout signal at Stockton, CA is on-time standing: 72.6% (6.4 pts below the 79% national flight-weighted average; roughly the bottom-quartile on-time performance) across 7,206 BTS flights (2020–2025). When a departure runs late, the average delay is 78.7 minutes; cancellations run 2.32%.
Delay minutes concentrate in Late Aircraft (46.2% late-aircraft, 26.4% carrier, 15.9% NAS, 10.1% weather, 1.4% security). As a quieter airport, a single late inbound can swing the month more than at a mega-hub.
On the multi-year calendar, SCK is strongest in February (89.6% on-time) and weakest in June (79.7%), a 9.9-point swing. Volume peaks in March (~124 flights/month). The busiest connecting route is to LAS (Las Vegas) at 63.2% on-time. Field definitions: on-time performance explained.
Stockton, CA vs. the national on-time distribution
On-time rate among all 382 tracked U.S. airports
72.6%Top 98%higher than 2% of 382 airports
Stockton, CA
60%95%
U.S. airports by on-time rate, bucketed by value
Each bar is a band; taller bars hold more airports. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025).
Statistics reflect cumulative performance across all available reporting periods. On-time rates exclude cancelled and diverted flights.
SCK's on-time book sits in the slower half of the BTS set; check the delay mix and the worst month before treating the headline as typical.
Check the busiest route from SCK before you book a connection. See top routes →
Travel in February rather than June if your dates are flexible. Seasonal patterns →
Gate-to-wheels taxi-out averages 11.6 min here; check the monthly series before a tight connection. Taxi times →
On-time rate reflects the BTS historical average across all reporting carriers at this airport, not any single flight or airline.
Frequently Asked Questions
What is Stockton, CA's on-time rate?
Stockton, CA (SCK) has a 72.6% on-time rate across 7,206 BTS-tracked flights (2020-2025), 6.4 pts below the 79% national flight-weighted average; that places it in roughly the bottom-quartile on-time performance.
How does SCK rank among U.S. airports by traffic volume?
Stockton, CA ranks #305 of 382 tracked US airports by total BTS flights (most flights = #1), making it a smaller regional airport.
What's the most common cause of delays at Stockton, CA?
Late Aircraft is the leading delay cause at SCK, accounting for 46.2% of delay minutes. The full breakdown: 46.2% late-aircraft, 26.4% carrier, 15.9% NAS/air-traffic-control, 10.1% weather, and 1.4% security.
When is the best time to fly through Stockton, CA?
February is historically SCK's strongest month at 89.6% on-time, while June is the weakest at 79.7%, a 9.9-point swing across the BTS historical record.