Carrier performance at one airport
OO→ASE
SkyWest Airlines at Aspen/Pitkin County
- Departures
- 7,992
- Period
- June 2025 to May 2026
- Routes
- 10
- Rank here
- #1 of 1
SkyWest Airlines at Aspen carries a cancellation problem, not just a delay problem: 6.3% of scheduled flights never operate, against 1.8% nationally. Of the ones that do fly, about seven flights in ten arrive on time, worth a C− overall. The punctuality figure counts only flights that actually departed, so it flatters an operation that cancels this often. That rests on 7,992 flights, with a median arrival 5 minutes early.
Measured against the airport rather than the country, SkyWest Airlines runs half a point ahead of the 69.5% weighted average across all carriers at ASE. That is the comparison worth making: every operator here works the same runways, the same airspace and the same weather.
Key figures
On time
69.5%
7,452 completed departures
Avg delay
107 min
Across delayed flights only
Cancelled
6.32%
At ASE, this carrier only
Rank here
#1
Of 1 carriers clearing the floor at ASE
These figures cover 7,992 flights between June 2025 and May 2026. Beyond the headline rate, 16.8% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Against the competition
Every carrier at ASE, ranked
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines (this page) | 7,992 | 69.5% | 107 min | 6.32% | C− |
Route by route
Where SkyWest Airlines flies from ASE
SkyWest Airlines operates 10 routes out of ASE with enough volume to report. Route records inside one carrier at one airport still spread widely, because a short shuttle and a transcontinental have very different exposure to a late inbound.
| Route | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| ASE to DEN · Denver | 2,715 | 73.6% | 95 min | 5.16% | C− |
| ASE to LAX · Los Angeles | 1,272 | 72.3% | 121 min | 6.45% | C− |
| ASE to DFW · Dallas-Fort Worth | 1,203 | 63.5% | 114 min | 8.23% | D− |
| ASE to ORD · Chicago | 1,040 | 60.9% | 99 min | 6.15% | D− |
| ASE to IAH · Houston | 600 | 71.8% | 118 min | 5.83% | C− |
| ASE to ATL · Atlanta | 448 | 73.8% | 104 min | 3.57% | C− |
| ASE to SFO · San Francisco | 376 | 69.3% | 108 min | 6.12% | C− |
| ASE to AUS · Austinthin sample | 180 | 57.3% | 119 min | 16.11% | D− |
| ASE to PHX · Phoenixthin sample | 110 | 69.2% | 106 min | 5.45% | C− |
| ASE to CLT · Charlottethin sample | 48 | 59.5% | 110 min | 22.92% | D− |
Departure window
Best time of day for this operation
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 21 points, against half a point between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.
- 5am–8am925 flights80.9%
- 8am–11am1,555 flights74.2%
- 11am–2pm2,907 flights68.8%
- 2pm–5pm1,666 flights60.1%
- 5pm–8pm911 flights68.3%
- 8pm–5am28 flights—
Scale runs 50% to 85%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 80.9% of the time, against 60.1% for the afternoon window. That is 21 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on.
Across the year
Seasonal pattern
June is the worst month at 52.7% on time, 35 points below May, the best at 87.8%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck.
Delay causes
What holds this operation up
- 32%Extreme weather
- 24%Carrier
- 23%National Airspace System
- 20%Late-arriving aircraft
- 0%Security
Extreme weather accounts for 32% of delay minutes, well above the single-digit share typical across the system. Weather delays are lumpy: they arrive as whole bad days rather than as a steady drag, so the monthly strip above is the more useful view of the risk. The national share is 6%, so this operation carries roughly 5.1 times the usual weather exposure.
Cancellations run at 6.32%, against 1.80% nationally. That is about one flight in fifteen cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 16.8% of arrivals land a full hour or more behind schedule, against 8.2% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
The sample behind these figures is 7,992 flights, enough that the headline rate is stable to within roughly a point. The hour-block and month splits divide that further, so read the thinner bars with more caution than the headline.
Put together: the delay figures matter less here than the 6.32% cancellation rate. A late arrival costs you close to two hours; a cancelled flight costs you the day. Book the 5am–8am departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic.
Common questions
SkyWest Airlines at ASE
How often is SkyWest Airlines at ASE delayed?
Roughly one flight in three arrive at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 30.5% of the 7,992 flights in this analysis, against 22.6% nationally. Delayed flights are late by close to two hours on average.
How reliable is SkyWest Airlines at ASE compared with the rest of the country?
69.5% of flights arrive on time here against a national 77.4%, a difference of 8 points against it. That is worth a C− on this site's grading scale.
What time of day has the fewest delays on SkyWest Airlines at ASE?
The 5am–8am departure window is the strongest at 80.9% on time. The 2pm–5pm window is the weakest at 60.1%, 21 points behind. Later departures inherit delays from earlier flights the same aircraft has already flown, which is why the curve slopes the way it does.
How bad are June delays on SkyWest Airlines at ASE?
June is the weakest month at 52.7% on time, compared with 87.8% in May. Across the year that is 35 points between the best and worst months. Moving flexible dates out of that month is one of the few things that reliably helps.
Related
Where to go next
Source: US DOT Bureau of Transportation Statistics, on-time performance data, June 2025 to May 2026. Updated monthly. How this data is collected.