Carrier performance at one airport
OO→ASE
SkyWest Airlines at Aspen/Pitkin County
- Departures
- 8,137
- Period
- September 2025 to August 2026
- Routes
- 10
- Rank here
- #1 of 1
SkyWest Airlines at Aspen carries a cancellation problem, not just a delay problem: 5.8% of scheduled flights never operate, against 1.9% 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 8,137 flights, with a median arrival 7 minutes early.
Measured against the airport rather than the country, SkyWest Airlines runs half a point ahead of the 71.6% 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
71.6%
7,620 completed departures
Avg delay
105 min
Across delayed flights only
Cancelled
5.79%
At ASE, this carrier only
Rank here
#1
Of 1 carriers clearing the floor at ASE
These figures cover 8,137 flights between September 2025 and August 2026. Beyond the headline rate, 15.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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) | 8,137 | 71.6% | 105 min | 5.79% | 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 | 2,742 | 76.7% | 106 min | 4.96% | B− |
| ASE to LAX · Los Angeles | 1,228 | 73.9% | 123 min | 6.68% | C− |
| ASE to DFW · Dallas-Fort Worth | 1,185 | 68.3% | 97 min | 7.00% | C− |
| ASE to ORD · Chicago | 1,179 | 63.3% | 102 min | 5.85% | D− |
| ASE to IAH · Houston | 639 | 75.9% | 100 min | 4.54% | B− |
| ASE to ATL · Atlanta | 450 | 76.5% | 106 min | 3.56% | B− |
| ASE to SFO · San Francisco | 373 | 57.0% | 89 min | 5.63% | D− |
| ASE to AUS · Austinthin sample | 183 | 58.2% | 110 min | 9.84% | 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− |
Flight by flight
SkyWest Airlines flight numbers from ASE
7 SkyWest Airlines flight numbers leaving ASE flew their main route often enough to have a record of their own. Grouped by destination.
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 23 points, against half a point between the best and worst carrier.
- 5am–8am1,148 flights86.2%
- 8am–11am1,434 flights74.5%
- 11am–2pm3,016 flights69.6%
- 2pm–5pm1,578 flights63.6%
- 5pm–8pm933 flights68.4%
- 8pm–5am28 flights—
Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.
Book the early departure. Flights leaving between 5am–8am arrive on time 86.2% of the time, against 63.6% for the afternoon window. That is 23 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 11am–2pm window is the busiest, with 3,016 flights scheduled in it.
Across the year
Seasonal pattern
December is the weak month at 62.3% on time, against 87.8% in May. Winter delays cluster: a single storm system can account for most of a month's shortfall, so an average December hides both very good weeks and genuinely unflyable days. March was the busiest month here, with 1,188 flights.
Delay causes
What holds this operation up
- 30%Extreme weather
- 25%Late-arriving aircraft
- 23%Carrier
- 22%National Airspace System
- 0%Security
Extreme weather accounts for 30% 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 4.9 times the usual weather exposure. The split is drawn from 227,181 reported delay minutes.
Cancellations run at 5.79%, against 1.89% nationally. That is roughly 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.
15.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
The sample behind these figures is 8,137 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 5.79% 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. 7,620 completed flights over 12 months sit behind that.
Common questions
SkyWest Airlines at ASE
How often is SkyWest Airlines at ASE delayed?
Roughly one flight in four arrives at least 15 minutes late, which is the Department of Transportation's definition of a delayed arrival. That works out to 28.4% of the 8,137 flights in this analysis, against 22.7% 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?
71.6% of flights arrive on time here against a national 77.3%, a difference of 6 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 86.2% on time. The 2pm–5pm window is the weakest at 63.6%, 23 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 December delays on SkyWest Airlines at ASE?
December is the weakest month at 62.3% on time, compared with 87.8% in May. Across the year that is 26 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, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.