Airport · AZO · Kalamazoo, Michigan
Kalamazoo, MI
Kalamazoo, MI posts top-quartile on-time performance among the 382 tracked U.S. airports, as a mid-size U.S. airport. According to the U.S. DOT Bureau of Transportation Statistics, drawn from 17,506 flights (2020–2025); its biggest delay driver is carrier.
Data updated 2026-06-13
- 87.1%
- On-time
- Top 15%
- on-time, US airports
- 93 min
- Delay when late
- 1.21%
- Cancelled
Key Performance Metrics
Total Flights
17,506
Best Month
Apr 97.1%
Worst Month
Dec 92%
Delayed
2,263
Cancelled
212
AZO on-time rate vs. the national average
Ahead of the U.S. average across all 382 tracked airports.
Where AZO sits among all 382 tracked airports
AZO's 87.1% on-time rate falls in the 85-90% band, the 116-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 AZO is marked in the 85-90% band.
Delay Cause Breakdown
Top delay cause: Carrier. Total delay minutes: 106,408.
AZO - seasonal on-time pattern
Best: April (97.1%) · worst: December (92%)
Seasonal Performance Patterns
Monthly averages across all years of data. Best month: April (97.1% on-time). Most delays: December (92% on-time).
| Month | Avg Flights | Avg Delayed | Avg Cancelled | On-Time % |
|---|---|---|---|---|
| December | 238 | 42 | 4 | 92% |
| November | 251 | 31 | 4 | 94% |
| October | 259 | 28 | 0 | 95.1% |
| September | 244 | 20 | 0 | 96% |
| August | 245 | 38 | 2 | 93.6% |
| July | 262 | 40 | 1 | 93.8% |
| June | 219 | 33 | 2 | 93.6% |
| May | 197 | 19 | 1 | 96.3% |
| April | 221 | 17 | 6 | 97.1% |
| March | 262 | 28 | 6 | 95.4% |
| February | 243 | 35 | 5 | 93.6% |
| January | 277 | 48 | 5 | 92.2% |
Year-Over-Year Performance
Annual flight volume and on-time trends at AZO.
AZO - on-time rate by year
2020–2025, year-over-year trend.
| Year | Flights | Delayed | Cancelled | On-Time % |
|---|---|---|---|---|
| 2025 | 3,205 | 266 | 41 | 91.7% |
| 2024 | 2,010 | 146 | 16 | 92.7% |
| 2023 | 1,727 | 92 | 6 | 94.7% |
| 2022 | 3,365 | 187 | 43 | 94.4% |
| 2021 | 3,513 | 134 | 14 | 96.2% |
| 2020 | 3,686 | 166 | 92 | 95.5% |
Cancellation & Diversion Analysis
Flight disruption statistics for Kalamazoo, MI.
Cancellation Rate
1.21%
212 of 17,506 flights
Diversion Rate
0.03%
5 of 17,506 flights
Delay Rate
12.9%
2,263 of 17,506 flights
Monthly Performance
Recent 24 months of flight data.
| Period | Flights | Dep Delayed | Arr Delayed | Cancelled | Diverted |
|---|---|---|---|---|---|
| Dec 2025 | 304 | 42 | 50 | 7 | 0 |
| Nov 2025 | 342 | 16 | 27 | 18 | 0 |
| Oct 2025 | 358 | 25 | 22 | 0 | 0 |
| Sep 2025 | 342 | 17 | 19 | 1 | 0 |
| Aug 2025 | 344 | 28 | 38 | 2 | 0 |
| Jul 2025 | 352 | 35 | 59 | 5 | 0 |
| Jun 2025 | 319 | 31 | 44 | 2 | 0 |
| May 2025 | 174 | 8 | 9 | 0 | 0 |
| Apr 2025 | 170 | 4 | 7 | 0 | 0 |
| Mar 2025 | 176 | 21 | 20 | 1 | 0 |
| Feb 2025 | 156 | 18 | 24 | 3 | 0 |
| Jan 2025 | 168 | 21 | 24 | 2 | 0 |
| Dec 2024 | 158 | 12 | 21 | 3 | 0 |
| Nov 2024 | 168 | 18 | 14 | 0 | 0 |
| Oct 2024 | 176 | 10 | 12 | 0 | 0 |
| Sep 2024 | 160 | 9 | 7 | 0 | 0 |
| Aug 2024 | 166 | 20 | 32 | 2 | 0 |
| Jul 2024 | 170 | 21 | 22 | 0 | 0 |
| Jun 2024 | 168 | 16 | 19 | 2 | 0 |
| May 2024 | 176 | 11 | 17 | 1 | 0 |
| Apr 2024 | 172 | 5 | 16 | 0 | 0 |
| Mar 2024 | 176 | 5 | 11 | 0 | 0 |
| Feb 2024 | 156 | 4 | 5 | 0 | 0 |
| Jan 2024 | 164 | 15 | 23 | 8 | 0 |
Top Routes from AZO
Busiest routes to and from Kalamazoo, MI.
| Route | Flights | On-Time | Distance |
|---|---|---|---|
| DTW (Detroit) → AZO (Kalamazoo) | 5,926 | 86.1% | 113 mi |
| AZO (Kalamazoo) → DTW (Detroit) | 5,925 | 86.8% | 113 mi |
| ORD (Chicago) → AZO (Kalamazoo) | 2,524 | 83.6% | 122 mi |
| AZO (Kalamazoo) → ORD (Chicago) | 2,523 | 86.7% | 122 mi |
Airports With a Similar On-Time Rate
Other U.S. airports nationwide whose on-time rate is closest to Kalamazoo, MI's 87.1%.
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
Marquette, MI
Marquette · 12,906 flights
Pellston, MI
Pellston · 9,995 flights
Keep exploring
More flight data around Kalamazoo, MI.
Michigan flight data
Statewide on-time and delay aggregates, plus every reporting airport in Michigan.
View MI data →Airport rankings
See where AZO sits among U.S. airports on on-time rate and average delay.
Best on-time airports →Compare airports
Put AZO head-to-head with another airport on delays and reliability.
Open comparison tool →What the Data Says About AZO
Kalamazoo, MI in Kalamazoo, Michigan handled 17,506 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 87.1% on-time departure rate. Of those flights, 2,263 experienced delays, 212 were cancelled, and 5 were diverted. The cancellation rate works out to 1.21%, the diversion rate to 0.03%, and the average delay when departures run late is 93.2 minutes. These figures are the baseline for comparing AZO against other airports in the same state and nationally.
Breaking down what drives delays at AZO, Carrier leads the pack. Carrier accounts for 51.9% of total delay minutes, followed by Late Aircraft at 23.0% and NAS (National Aviation System) at 13.0%. Weather contributes 12.2% of delay minutes at this airport, while security holds the smallest share at 0.0%. Travelers often overestimate the weather share; the BTS categorization shows late-arriving aircraft and carrier operations as the larger contributors.
Seasonally, April runs the cleanest at AZO with a 97.1% on-time rate, while December is the roughest at 92% - a 5-point swing between best and worst month. Volume peaks in January, when average flights hit 277. The busiest route connecting AZO is to DTW (Detroit), with 5,926 flights at a 86.1% on-time rate. Combine these numbers - 87.1% on-time, 93.2-minute average delay, 1.21% cancellation rate, and you have a concrete picture of departure reliability at Kalamazoo, MI.
Frequently Asked Questions
What is the on-time performance rate at Kalamazoo, MI (AZO)? ▼
What is the most common cause of delays at AZO? ▼
What is the average delay time at AZO? ▼
What is the best month to fly from AZO? ▼
What is the worst month for delays at AZO? ▼
How many routes operate from AZO? ▼
What is the cancellation rate at AZO? ▼
Flight Guides
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Read our methodology - how this data is sourced, computed, and verified.
Using AZO's data
An airport-level on-time rate is a starting point, not a guarantee for your specific flight.
- Check the busiest route from AZO before you book a connection. See top routes
- Travel in April 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.