According to PlainFlights' airport traffic ranking (BTS On-Time Performance total flights), Champaign/Urbana, IL (CMI) ranks #216 of 382 tracked US airports by total flights (most flights = #1). Champaign/Urbana, IL posts above-median on-time performance among the 382 tracked U.S. airports, as a mid-size U.S. airport.
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CMI on-time rate vs. the national average
Ahead of the U.S. average across all 382 tracked airports.
Delay Cause Breakdown
Top delay cause: Late Aircraft.
Total delay minutes: 113,880.
Late Aircraft37.8% (43,050 min)
Carrier31.8% (36,262 min)
NAS (National Aviation System)19.6% (22,273 min)
Weather10.8% (12,276 min)
Security0.0% (19 min)
CMI - seasonal on-time pattern
Best: April (95.2%) · worst: June (91.6%)
CMI - on-time rate by year
2020–2025, year-over-year trend.
CMI - taxi-out and taxi-in (monthly)
Average taxi-out 13.2 min · taxi-in 5.5 min over the last 24 reported months (U.S. airport mean taxi-out ≈ 16.4 min).
CMI's average taxi-out (13.2 min) stays shorter than the recent U.S. airport mean (~16.4 min). Even the heaviest month (November 2025, 16.1 min) is milder than many hubs' typical book.
Cancellation & Diversion Analysis
Flight disruption statistics for Champaign/Urbana, IL.
Two PlainFlights-derived comparison paths for Champaign/Urbana, IL, both outside Illinois 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 Champaign/Urbana, IL is the delay mix: Late Aircraft owns 37.8% of 113,880 delay minutes across 17,865 BTS flights. The on-time headline is 84.8% (5.8 pts above the 79% national average), with 2,707 delayed and 286 cancelled (1.60%).
Delay minutes concentrate in Late Aircraft (37.8% late-aircraft, 31.8% carrier, 19.6% NAS, 10.8% weather, 0.0% security). Mid-volume books still show a clear delay fingerprint rather than a weather-only story.
On the multi-year calendar, CMI is strongest in April (95.2% on-time) and weakest in June (91.6%), a 3.6-point swing. Volume peaks in January (~276 flights/month). The busiest connecting route is to ORD (Chicago) at 85.1% on-time. Field definitions: on-time performance explained.
Champaign/Urbana, IL vs. the national on-time distribution
On-time rate among all 382 tracked U.S. airports
84.8%Top 35%higher than 65% of 382 airports
Champaign/Urbana, IL
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.
CMI's on-time book is mid-pack; month and delay-cause mix move more than the headline rate.
Check the busiest route from CMI before you book a connection. See top routes →
Travel in April rather than June if your dates are flexible. Seasonal patterns →
Gate-to-wheels taxi-out averages 13.2 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 Champaign/Urbana, IL's on-time rate?
Champaign/Urbana, IL (CMI) has a 84.8% on-time rate across 17,865 BTS-tracked flights (2020-2025), 5.8 pts above the 79% national flight-weighted average; that places it in roughly the above-median on-time performance.
How does CMI rank among U.S. airports by traffic volume?
Champaign/Urbana, IL ranks #216 of 382 tracked US airports by total BTS flights (most flights = #1), making it a mid-size U.S. airport.
What's the most common cause of delays at Champaign/Urbana, IL?
Late Aircraft is the leading delay cause at CMI, accounting for 37.8% of delay minutes. The full breakdown: 37.8% late-aircraft, 31.8% carrier, 19.6% NAS/air-traffic-control, 10.8% weather, and 0.0% security.
When is the best time to fly through Champaign/Urbana, IL?
April is historically CMI's strongest month at 95.2% on-time, while June is the weakest at 91.6%, a 3.6-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