Airport · CYS · Cheyenne, Wyoming
Cheyenne, WY
Cheyenne, WY 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 5,577 flights (2020–2025); its biggest delay driver is carrier.
Data updated 2026-06-13
- 85.4%
- On-time
- Top 29%
- on-time, US airports
- 138 min
- Delay when late
- 1.36%
- Cancelled
Key Performance Metrics
Total Flights
5,577
Best Month
Sep 95.8%
Worst Month
Jul 90.6%
Delayed
815
Cancelled
76
CYS on-time rate vs. the national average
Ahead of the U.S. average across all 382 tracked airports.
Where CYS sits among all 382 tracked airports
CYS's 85.4% 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 CYS is marked in the 85-90% band.
Delay Cause Breakdown
Top delay cause: Carrier. Total delay minutes: 52,293.
CYS - seasonal on-time pattern
Best: September (95.8%) · worst: July (90.6%)
Seasonal Performance Patterns
Monthly averages across all years of data. Best month: September (95.8% on-time). Most delays: July (90.6% on-time).
| Month | Avg Flights | Avg Delayed | Avg Cancelled | On-Time % |
|---|---|---|---|---|
| December | 107 | 12 | 2 | 94.8% |
| November | 102 | 12 | 1 | 95.1% |
| October | 97 | 10 | 0 | 94.8% |
| September | 108 | 13 | 0 | 95.8% |
| August | 121 | 25 | 1 | 92.3% |
| July | 128 | 29 | 1 | 90.6% |
| June | 117 | 25 | 1 | 92.9% |
| May | 118 | 16 | 1 | 94.1% |
| April | 68 | 8 | 1 | 95.1% |
| March | 93 | 11 | 2 | 94.3% |
| February | 75 | 14 | 1 | 91.4% |
| January | 91 | 14 | 3 | 93% |
Year-Over-Year Performance
Annual flight volume and on-time trends at CYS.
CYS - on-time rate by year
2020–2025, year-over-year trend.
| Year | Flights | Delayed | Cancelled | On-Time % |
|---|---|---|---|---|
| 2025 | 1,472 | 123 | 8 | 91.6% |
| 2024 | 1,358 | 66 | 14 | 95.1% |
| 2023 | 736 | 54 | 13 | 92.7% |
| 2022 | 1,280 | 59 | 16 | 95.4% |
| 2021 | 436 | 23 | 16 | 94.7% |
| 2020 | 295 | 20 | 9 | 93.2% |
Cancellation & Diversion Analysis
Flight disruption statistics for Cheyenne, WY.
Cancellation Rate
1.36%
76 of 5,577 flights
Diversion Rate
0.04%
2 of 5,577 flights
Delay Rate
14.6%
815 of 5,577 flights
Monthly Performance
Recent 24 months of flight data.
| Period | Flights | Dep Delayed | Arr Delayed | Cancelled | Diverted |
|---|---|---|---|---|---|
| Dec 2025 | 126 | 12 | 14 | 0 | 0 |
| Nov 2025 | 118 | 2 | 3 | 0 | 0 |
| Oct 2025 | 124 | 7 | 10 | 0 | 0 |
| Sep 2025 | 120 | 3 | 9 | 0 | 0 |
| Aug 2025 | 124 | 12 | 23 | 1 | 1 |
| Jul 2025 | 144 | 17 | 28 | 2 | 0 |
| Jun 2025 | 120 | 14 | 25 | 1 | 0 |
| May 2025 | 124 | 10 | 18 | 1 | 0 |
| Apr 2025 | 120 | 9 | 14 | 1 | 0 |
| Mar 2025 | 124 | 6 | 11 | 1 | 0 |
| Feb 2025 | 112 | 19 | 21 | 1 | 0 |
| Jan 2025 | 116 | 12 | 16 | 0 | 0 |
| Dec 2024 | 116 | 2 | 3 | 0 | 0 |
| Nov 2024 | 110 | 4 | 12 | 2 | 0 |
| Oct 2024 | 116 | 5 | 8 | 0 | 0 |
| Sep 2024 | 112 | 7 | 14 | 0 | 0 |
| Aug 2024 | 114 | 6 | 13 | 1 | 0 |
| Jul 2024 | 116 | 6 | 10 | 0 | 0 |
| Jun 2024 | 110 | 6 | 8 | 1 | 0 |
| May 2024 | 116 | 7 | 6 | 0 | 0 |
| Apr 2024 | 112 | 7 | 7 | 1 | 0 |
| Mar 2024 | 114 | 2 | 5 | 3 | 0 |
| Feb 2024 | 108 | 7 | 10 | 2 | 0 |
| Jan 2024 | 114 | 7 | 6 | 4 | 0 |
Top Routes from CYS
Busiest routes to and from Cheyenne, WY.
| Route | Flights | On-Time | Distance |
|---|---|---|---|
| DEN (Denver) → CYS (Cheyenne) | 2,594 | 82.7% | 90 mi |
| CYS (Cheyenne) → DEN (Denver) | 2,593 | 85.8% | 90 mi |
Airports With a Similar On-Time Rate
Other U.S. airports nationwide whose on-time rate is closest to Cheyenne, WY's 85.4%.
Other Airports in Wyoming
Compare performance with other Wyoming airports.
Jackson, WY
Jackson · 64,902 flights
Casper, WY
Casper · 20,592 flights
Gillette, WY
Gillette · 8,123 flights
Sheridan, WY
Sheridan · 7,839 flights
Laramie, WY
Laramie · 7,419 flights
Cody, WY
Cody · 7,056 flights
Rock Springs, WY
Rock Springs · 6,604 flights
Riverton/Lander, WY
Riverton/Lander · 6,519 flights
Keep exploring
More flight data around Cheyenne, WY.
Wyoming flight data
Statewide on-time and delay aggregates, plus every reporting airport in Wyoming.
View WY data →Airport rankings
See where CYS sits among U.S. airports on on-time rate and average delay.
Best on-time airports →Compare airports
Put CYS head-to-head with another airport on delays and reliability.
Open comparison tool →What the Data Says About CYS
Cheyenne, WY in Cheyenne, Wyoming handled 5,577 flights in the Bureau of Transportation Statistics dataset between 2020 and 2025, posting a 85.4% on-time departure rate. Of those flights, 815 experienced delays, 76 were cancelled, and 2 were diverted. The cancellation rate works out to 1.36%, the diversion rate to 0.04%, and the average delay when departures run late is 138.2 minutes. These figures are the baseline for comparing CYS against other airports in the same state and nationally.
Breaking down what drives delays at CYS, Carrier leads the pack. Carrier accounts for 44.0% of total delay minutes, followed by Late Aircraft at 23.6% and Weather at 16.4%. Weather contributes 16.4% 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, September runs the cleanest at CYS with a 95.8% on-time rate, while July is the roughest at 90.6% - a 5-point swing between best and worst month. Volume peaks in July, when average flights hit 128. The busiest route connecting CYS is to DEN (Denver), with 2,594 flights at a 82.7% on-time rate. Combine these numbers - 85.4% on-time, 138.2-minute average delay, 1.36% cancellation rate, and you have a concrete picture of departure reliability at Cheyenne, WY.
Frequently Asked Questions
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Flight Guides
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Using CYS's data
An airport-level on-time rate is a starting point, not a guarantee for your specific flight.
- Check the busiest route from CYS before you book a connection. See top routes
- Travel in September rather than July 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.