According to PlainFlights' airport traffic ranking (BTS On-Time Performance total flights), Iron Mountain/Kingsfd, MI (IMT) ranks #275 of 382 tracked US airports by total flights (most flights = #1). Iron Mountain/Kingsfd, MI posts above-median on-time performance among the 382 tracked U.S. airports, as a smaller regional airport.
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IMT 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: 77,316.
Late Aircraft1.0% (799 min)
Carrier68.0% (52,601 min)
NAS (National Aviation System)3.1% (2,369 min)
Weather27.7% (21,421 min)
Security0.2% (126 min)
IMT - seasonal on-time pattern
Best: September (94.7%) · worst: December (86.8%)
IMT - on-time rate by year
2020–2025, year-over-year trend.
IMT - taxi-out and taxi-in (monthly)
Average taxi-out 16 min · taxi-in 4.7 min over the last 24 reported months (U.S. airport mean taxi-out ≈ 16.4 min).
IMT's average taxi-out (16 min) sits near the recent U.S. airport mean (~16.4 min). Month-to-month, it swings from 10.9 min (July 2025) to 23.6 min (January 2024).
Cancellation & Diversion Analysis
Flight disruption statistics for Iron Mountain/Kingsfd, MI.
Cancellation Rate
0.76%
66 of 8,658 flights
Diversion Rate
0.08%
7 of 8,658 flights
Delay Rate
15.1%
1,304 of 8,658 flights
Top Routes from IMT
Busiest routes to and from Iron Mountain/Kingsfd, MI.
Two PlainFlights-derived comparison paths for Iron Mountain/Kingsfd, MI, both outside Michigan 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 Iron Mountain/Kingsfd, MI is the delay mix: Carrier owns 68.0% of 77,316 delay minutes across 8,658 BTS flights. The on-time headline is 84.9% (5.9 pts above the 79% national average), with 1,304 delayed and 66 cancelled (0.76%).
Delay minutes concentrate in Carrier (1.0% late-aircraft, 68.0% carrier, 3.1% NAS, 27.7% weather, 0.2% security). As a quieter airport, a single late inbound can swing the month more than at a mega-hub.
On the multi-year calendar, IMT is strongest in September (94.7% on-time) and weakest in December (86.8%), a 7.9-point swing. Volume peaks in October (~124 flights/month). The busiest connecting route is to MSP (Minneapolis) at 84.7% on-time. Field definitions: on-time performance explained.
Iron Mountain/Kingsfd, MI vs. the national on-time distribution
On-time rate among all 382 tracked U.S. airports
84.9%Top 34%higher than 66% of 382 airports
Iron Mountain/Kingsfd, MI
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.
IMT's on-time book is mid-pack; month and delay-cause mix move more than the headline rate.
Check the busiest route from IMT before you book a connection. See top routes →
Travel in September rather than December if your dates are flexible. Seasonal patterns →
Gate-to-wheels taxi-out averages 16 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 Iron Mountain/Kingsfd, MI's on-time rate?
Iron Mountain/Kingsfd, MI (IMT) has a 84.9% on-time rate across 8,658 BTS-tracked flights (2020-2025), 5.9 pts above the 79% national flight-weighted average; that places it in roughly the above-median on-time performance.
How does IMT rank among U.S. airports by traffic volume?
Iron Mountain/Kingsfd, MI ranks #275 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 Iron Mountain/Kingsfd, MI?
Carrier is the leading delay cause at IMT, accounting for 68.0% of delay minutes. The full breakdown: 1.0% late-aircraft, 68.0% carrier, 3.1% NAS/air-traffic-control, 27.7% weather, and 0.2% security.
When is the best time to fly through Iron Mountain/Kingsfd, MI?
September is historically IMT's strongest month at 94.7% on-time, while December is the weakest at 86.8%, a 7.9-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