According to PlainFlights' airport traffic ranking (BTS On-Time Performance total flights), Sioux City, IA (SUX) ranks #263 of 382 tracked US airports by total flights (most flights = #1). Sioux City, IA posts below-median on-time performance among the 382 tracked U.S. airports, as a smaller regional airport.
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SUX on-time rate vs. the national average
Ahead of the U.S. average across all 382 tracked airports.
Delay Cause Breakdown
Top delay cause: Carrier.
Total delay minutes: 84,617.
Late Aircraft24.2% (20,494 min)
Carrier49.8% (42,158 min)
NAS (National Aviation System)14.2% (12,009 min)
Weather11.7% (9,915 min)
Security0.0% (41 min)
SUX - seasonal on-time pattern
Best: November (95.2%) · worst: June (86.9%)
SUX - on-time rate by year
2020–2025, year-over-year trend.
SUX - taxi-out and taxi-in (monthly)
Average taxi-out 19 min · taxi-in 5.1 min over the last 24 reported months (U.S. airport mean taxi-out ≈ 16.4 min).
SUX's average taxi-out (19 min) runs longer than the recent U.S. airport mean (~16.4 min). The heaviest month in this window is December 2025 at 28.9 min; the lightest is April 2024 at 12.6 min.
Two PlainFlights-derived comparison paths for Sioux City, IA, both outside Iowa 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 Sioux City, IA is the delay mix: Carrier owns 49.8% of 84,617 delay minutes across 9,052 BTS flights. The on-time headline is 81.8% (2.8 pts above the 79% national average), with 1,644 delayed and 125 cancelled (1.38%).
Delay minutes concentrate in Carrier (24.2% late-aircraft, 49.8% carrier, 14.2% NAS, 11.7% weather, 0.0% security). As a quieter airport, a single late inbound can swing the month more than at a mega-hub.
On the multi-year calendar, SUX is strongest in November (95.2% on-time) and weakest in June (86.9%), a 8.3-point swing. Volume peaks in July (~140 flights/month). The busiest connecting route is to ORD (Chicago) at 78.6% on-time. Field definitions: on-time performance explained.
Sioux City, IA vs. the national on-time distribution
On-time rate among all 382 tracked U.S. airports
81.8%Top 69%higher than 31% of 382 airports
Sioux City, IA
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.
SUX'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 SUX before you book a connection. See top routes →
Travel in November rather than June if your dates are flexible. Seasonal patterns →
Build extra connection buffer when taxi-out spikes. December 2025 averaged 28.9 min. 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 Sioux City, IA's on-time rate?
Sioux City, IA (SUX) has a 81.8% on-time rate across 9,052 BTS-tracked flights (2020-2025), 2.8 pts above the 79% national flight-weighted average; that places it in roughly the below-median on-time performance.
How does SUX rank among U.S. airports by traffic volume?
Sioux City, IA ranks #263 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 Sioux City, IA?
Carrier is the leading delay cause at SUX, accounting for 49.8% of delay minutes. The full breakdown: 24.2% late-aircraft, 49.8% carrier, 14.2% NAS/air-traffic-control, 11.7% weather, and 0.0% security.
When is the best time to fly through Sioux City, IA?
November is historically SUX's strongest month at 95.2% on-time, while June is the weakest at 86.9%, a 8.3-point swing across the BTS historical record.
Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights