Airport · IMT · Iron Mountain/Kingsfd, Michigan
Iron Mountain/Kingsfd, MI
Iron Mountain/Kingsfd, MI posts above-median on-time performance among the 382 tracked U.S. airports, as a smaller regional airport. According to the U.S. DOT Bureau of Transportation Statistics, drawn from 8,658 flights (2020–2025); its biggest delay driver is carrier.
Data updated 2026-06-13
- 84.9%
- On-time
- Top 34%
- on-time, US airports
- 110 min
- Delay when late
- 0.76%
- Cancelled
Key Performance Metrics
Total Flights
8,658
Best Month
Sep 94.7%
Worst Month
Dec 86.8%
Delayed
1,304
Cancelled
66
IMT on-time rate vs. the national average
Ahead of the U.S. average across all 382 tracked airports.
Where IMT sits among all 382 tracked airports
IMT's 84.9% on-time rate falls in the 80-85% band, the 192-airport band it shares.
National on-time-rate distribution
- 60-65% 1
1 airport between 60% and 65% on-time
1 airports
- 65-70% 4
4 airports between 65% and 70% on-time
4 airports
- 70-75% 9
9 airports between 70% and 75% on-time
9 airports
- 75-80% 48
48 airports between 75% and 80% on-time
48 airports
- 80-85%
192 airports between 80% and 85% on-time
192 airports
- 85-90%
116 airports between 85% and 90% on-time
116 airports
- 90-95% 12
12 airports between 90% and 95% on-time
12 airports
What this shows IMT is marked in the 80-85% band.
Delay Cause Breakdown
Top delay cause: Carrier. Total delay minutes: 77,316.
IMT - seasonal on-time pattern
Best: September (94.7%) · worst: December (86.8%)
Seasonal Performance Patterns
Monthly averages across all years of data. Best month: September (94.7% on-time). Most delays: December (86.8% on-time).
| Month | Avg Flights | Avg Delayed | Avg Cancelled | On-Time % |
|---|---|---|---|---|
| December | 122 | 31 | 4 | 86.8% |
| November | 118 | 15 | 1 | 93.4% |
| October | 124 | 18 | 0 | 93% |
| September | 119 | 15 | 0 | 94.7% |
| August | 122 | 18 | 1 | 92.6% |
| July | 123 | 19 | 0 | 92.3% |
| June | 119 | 18 | 0 | 92.7% |
| May | 122 | 14 | 0 | 94.1% |
| April | 119 | 15 | 1 | 94% |
| March | 123 | 16 | 2 | 93.6% |
| February | 112 | 17 | 1 | 92.7% |
| January | 121 | 24 | 2 | 90.2% |
Year-Over-Year Performance
Annual flight volume and on-time trends at IMT.
IMT - on-time rate by year
2020–2025, year-over-year trend.
| Year | Flights | Delayed | Cancelled | On-Time % |
|---|---|---|---|---|
| 2025 | 1,454 | 148 | 15 | 89.8% |
| 2024 | 1,457 | 117 | 9 | 92% |
| 2023 | 1,453 | 106 | 15 | 92.7% |
| 2022 | 1,452 | 127 | 15 | 91.3% |
| 2021 | 1,458 | 83 | 7 | 94.3% |
| 2020 | 1,384 | 68 | 5 | 95.1% |
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
Monthly Performance
Recent 24 months of flight data.
| Period | Flights | Dep Delayed | Arr Delayed | Cancelled | Diverted |
|---|---|---|---|---|---|
| Dec 2025 | 124 | 23 | 23 | 6 | 0 |
| Nov 2025 | 116 | 14 | 11 | 2 | 0 |
| Oct 2025 | 124 | 16 | 19 | 0 | 0 |
| Sep 2025 | 120 | 7 | 10 | 0 | 0 |
| Aug 2025 | 124 | 6 | 8 | 0 | 0 |
| Jul 2025 | 124 | 14 | 11 | 0 | 0 |
| Jun 2025 | 120 | 10 | 10 | 0 | 0 |
| May 2025 | 124 | 14 | 12 | 0 | 0 |
| Apr 2025 | 120 | 13 | 10 | 0 | 0 |
| Mar 2025 | 124 | 3 | 5 | 6 | 0 |
| Feb 2025 | 112 | 12 | 12 | 0 | 0 |
| Jan 2025 | 122 | 16 | 17 | 1 | 0 |
| Dec 2024 | 121 | 22 | 21 | 3 | 1 |
| Nov 2024 | 118 | 7 | 5 | 0 | 0 |
| Oct 2024 | 124 | 7 | 5 | 0 | 0 |
| Sep 2024 | 120 | 4 | 9 | 0 | 0 |
| Aug 2024 | 124 | 9 | 12 | 4 | 0 |
| Jul 2024 | 124 | 11 | 14 | 0 | 0 |
| Jun 2024 | 120 | 13 | 16 | 1 | 0 |
| May 2024 | 124 | 7 | 10 | 0 | 0 |
| Apr 2024 | 120 | 6 | 11 | 0 | 0 |
| Mar 2024 | 124 | 7 | 5 | 0 | 0 |
| Feb 2024 | 116 | 3 | 5 | 0 | 0 |
| Jan 2024 | 122 | 21 | 18 | 1 | 0 |
Top Routes from IMT
Busiest routes to and from Iron Mountain/Kingsfd, MI.
| Route | Flights | On-Time | Distance |
|---|---|---|---|
| IMT (Iron Mountain/Kingsfd) → MSP (Minneapolis) | 1,865 | 84.7% | 257 mi |
| MSP (Minneapolis) → IMT (Iron Mountain/Kingsfd) | 1,836 | 85.8% | 257 mi |
| IMT (Iron Mountain/Kingsfd) → DTW (Detroit) | 1,569 | 83.4% | 344 mi |
| DTW (Detroit) → IMT (Iron Mountain/Kingsfd) | 1,540 | 83.4% | 344 mi |
Airports With a Similar On-Time Rate
Other U.S. airports nationwide whose on-time rate is closest to Iron Mountain/Kingsfd, MI's 84.9%.
Other Airports in Michigan
Compare performance with other Michigan airports.
Detroit, MI
Detroit · 1,488,949 flights
Grand Rapids, MI
Grand Rapids · 195,613 flights
Traverse City, MI
Traverse City · 50,174 flights
Flint, MI
Flint · 31,426 flights
Lansing, MI
Lansing · 21,361 flights
Saginaw/Bay City/Midland, MI
Saginaw/Bay City/Midland · 20,046 flights
Kalamazoo, MI
Kalamazoo · 17,506 flights
Marquette, MI
Marquette · 12,906 flights
Keep exploring
More flight data around Iron Mountain/Kingsfd, MI.
Michigan flight data
Statewide on-time and delay aggregates, plus every reporting airport in Michigan.
View MI data →Airport rankings
See where IMT sits among U.S. airports on on-time rate and average delay.
Best on-time airports →Compare airports
Put IMT head-to-head with another airport on delays and reliability.
Open comparison tool →What the Data Says About IMT
Iron Mountain/Kingsfd, MI in Iron Mountain/Kingsfd, Michigan handled 8,658 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 84.9% on-time departure rate. Of those flights, 1,304 experienced delays, 66 were cancelled, and 7 were diverted. The cancellation rate works out to 0.76%, the diversion rate to 0.08%, and the average delay when departures run late is 110.2 minutes. These figures are the baseline for comparing IMT against other airports in the same state and nationally.
Breaking down what drives delays at IMT, Carrier leads the pack. Carrier accounts for 68.0% of total delay minutes, followed by Weather at 27.7% and NAS (National Aviation System) at 3.1%. Weather contributes 27.7% of delay minutes at this airport, while security holds the smallest share at 0.2%. Travelers often overestimate the weather share; the BTS categorization shows late-arriving aircraft and carrier operations as the larger contributors.
Seasonally, September runs the cleanest at IMT with a 94.7% on-time rate, while December is the roughest at 86.8% - a 8-point swing between best and worst month. Volume peaks in October, when average flights hit 124. The busiest route connecting IMT is to MSP (Minneapolis), with 1,865 flights at a 84.7% on-time rate. Combine these numbers - 84.9% on-time, 110.2-minute average delay, 0.76% cancellation rate, and you have a concrete picture of departure reliability at Iron Mountain/Kingsfd, MI.
Frequently Asked Questions
What is the on-time performance rate at Iron Mountain/Kingsfd, MI (IMT)? ▼
What is the most common cause of delays at IMT? ▼
What is the average delay time at IMT? ▼
What is the best month to fly from IMT? ▼
What is the worst month for delays at IMT? ▼
How many routes operate from IMT? ▼
What is the cancellation rate at IMT? ▼
Flight Guides
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Read our methodology - how this data is sourced, computed, and verified.
Using IMT's data
An airport-level on-time rate is a starting point, not a guarantee for your specific flight.
- 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
- Scores vary by airline and route within the same airport; check the specific carrier you're flying. Browse airlines
On-time rate reflects the BTS historical average across all reporting carriers at this airport, not any single flight or airline.
Related
Source: U.S. Bureau of Transportation Statistics (BTS) Airline on-time performance and operational reliability · 2025
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. Airport figures are computed directly from BTS On-Time Performance data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.