Skiers have argued about Jackson Hole vs. Aspen forever. The terrain, the snow, the town, the price. We can't settle the skiing debate. But we can settle the airport one, because the U.S. Department of Transportation keeps score. Both destinations are famous for winter flight cancellations. One of them earns that reputation nearly three times harder than the other.
Short version: Aspen (ASE) cancels and diverts a much larger share of its winter flights than Jackson Hole (JAC). The reasons are baked into each airport's geography, approach procedures, and the planes allowed to land there. And there's a twist most comparisons miss: when a Jackson Hole flight diverts, it usually still gets you to Jackson. When an Aspen flight diverts, it usually doesn't. Here's the full picture.
The Head-to-Head Numbers
Rather than rely on someone else's summary, we counted this one ourselves. The U.S. Department of Transportation publishes a record of every flight its reporting airlines schedule, including the ones that never took off. We pulled four complete winters of it, December 2022 through March 2026, and counted every flight scheduled into each airport. That's more than 23,000 winter arrivals. Our method is at the bottom of this post if you want to check our work.
| Winter arrivals (Dec–Mar, 2022–23 through 2025–26) | Aspen (ASE) | Jackson Hole (JAC) |
|---|---|---|
| Flights scheduled in | 14,824 | 8,406 |
| Cancelled | 934 | 135 |
| Diverted | 708 | 181 |
| Cancelled or diverted | 11.1% | 3.8% |
| Landed 60+ min late (of flights that did operate) | 16.2% | 7.8% |
| Round trip with at least one problem | 20.1% (about 1 in 5) | 6.5% (about 1 in 15) |
Aspen loses about one winter arrival in nine. Jackson Hole loses about one in 27. Book a winter round trip through Aspen and roughly one trip in five will lose a flight to a cancellation or diversion; at Jackson Hole it's about one in 15. The delay row matters too: even among flights that did operate, Aspen arrivals were more than twice as likely to land an hour or more behind schedule.
The gap holds up every single winter we looked at. Aspen ranged from 9.5 percent to 14.5 percent of arrivals cancelled or diverted. Jackson Hole ranged from 3.3 percent to 4.4 percent. Aspen's best winter in the sample was still more than twice as bad as Jackson Hole's worst.
Our numbers line up closely with the outside analysis on this question. A SlopeLab study of 12-plus years of DOT records put Aspen at 11.03 percent of winter flights cancelled or diverted, third worst among U.S. ski airports, and Jackson Hole at 4.11 percent, eighth worst. Two different samples, two different people counting, nearly the same answer.
Other well-known figures tell the same story. During the brutal December 2022 holiday stretch, Aspen finished first in the entire country with 34.8 percent of flights disrupted, per analysis published in the Vail Daily. We break Aspen's year-round record down month by month in our Aspen delay and diversion statistics post.
To be fair to Aspen: most of the year, it flies fine. September and October regularly post 99 to 100 percent completion rates. The gap between these two airports is a winter gap. But winter is when skiers fly.
December is the coin flip at both airports
Our month-by-month counts show December is the least predictable month at either airport. Aspen's December arrivals ranged from 5.6 percent cancelled or diverted (2023) to 14.1 percent (2022) across the four winters. Jackson Hole's swung from 1.7 percent to 7.5 percent. January through March are steadier at both. If you're booking a holiday trip, plan for the bad version of December rather than the average one.
Why Aspen Cancels More
Here's the counterintuitive part: Aspen has the longer runway. ASE's runway is 8,006 feet; Jackson Hole's is only 6,300. If pavement were the whole story, Aspen would win. The problem is everything around the pavement.
| Specification | Aspen (ASE) | Jackson Hole (JAC) |
|---|---|---|
| Runway | 8,006 ft (15/33, one-way in, one-way out) | 6,300 ft (1/19) |
| Elevation | 7,820 ft MSL | 6,451 ft MSL |
| Precision approach | None (LOC/DME-E, circling only) | Straight-in ILS to Runway 19 |
| Terrain | Box canyon; approach over rising terrain | Wide, flat valley floor along the Snake River |
| Aircraft allowed | 95 ft wingspan max: E175 and CRJ700 only | Mainline Airbus jets plus E175 and CRJ700 |
| Airlines | SkyWest only (United, American, Delta brands) | Alaska, American, Delta, United; seasonal Sun Country |
Three of those rows do most of the damage.
1. The approach
Jackson Hole sits on the wide, flat floor of the valley that gives it its name. Pilots descend along the Snake River with the Tetons off to one side, per AOPA's airport profile, and the airport has a straight-in ILS approach. An ILS (Instrument Landing System) guides a plane down to the runway electronically, so crews can land in fairly low clouds and visibility.
Aspen has no standard ILS. The airport sits in a box canyon with rising terrain on three sides, and its published airline approach requires much better ceiling and visibility than a straight-in ILS does. When a storm drops the clouds below those limits, flights hold, divert, or cancel. That single difference explains a big share of the gap in the table above. For the full mechanics, see why Aspen flights get delayed.
2. The aircraft list
Aspen caps wingspans at 95 feet, which limits commercial service to exactly two aircraft types: the Embraer E175 and the Bombardier CRJ700, per the airport's own wingspan restriction. (The full story is in why Aspen only flies E175s.)
The DOT records show just how concentrated that makes Aspen. Of all 14,824 winter arrivals we counted at ASE, every single one was operated by SkyWest. Not most. All of them. Jackson Hole's arrivals were spread across five reporting airlines: United, SkyWest, Delta, American, and Alaska. When weather or a crew problem hits Aspen's one operator, there is no second airline to absorb the load, and there is no larger aircraft to consolidate two half-full flights into one.
3. The wind and the one-way runway
Aspen's runway is one-way: land toward the south, depart toward the north, because of the terrain. On many afternoons the wind at Aspen blows from the north, which puts a tailwind on the only landing direction, and the E175 can only accept about 10 knots of it. Jackson Hole's runway works in both directions, so crews can usually just land into the wind.
Where Flying to Jackson Hole Gets Hard
None of this makes Jackson Hole an easy airport. It still cancels or diverts about one winter arrival in 27, and it has real constraints of its own.
- The runway is short. At 6,300 feet and an elevation of 6,451 feet, JAC's runway is modest for the jets that use it. When snow contaminates the surface, stopping distances grow and airlines take weight penalties, which can mean bumped bags, bumped passengers, or scrubbed flights, as SlopeLab's Jackson Hole travel guide notes.
- It's inside a national park. JAC is the only commercial airport in the United States located inside a national park (Grand Teton), per AOPA. That brings strict noise rules and limits on expansion. The airport cannot simply add pavement the way other airports can.
- It gets hammered by snow. The Tetons see some of the heaviest snowfall in the Rockies. A big storm cycle can still shut down operations for hours and ripple through the schedule for the rest of the day.
So the honest summary is: Jackson Hole is a hard mountain airport with better tools. Aspen is a hard mountain airport with harder rules.
What Actually Happens When a Flight Diverts
Flight risk isn't just how often things go wrong. It's what happens to your trip when they do. This is the part we expected to favor Aspen, because Aspen's backup airports are much closer to town. The data said otherwise.
The DOT records track whether a diverted flight eventually reached its original destination. The gap is enormous:
| Diverted winter arrivals | Aspen (ASE) | Jackson Hole (JAC) |
|---|---|---|
| Total diversions (4 winters) | 708 | 181 |
| Eventually landed at the intended airport | 28% | 81% |
| Most common diversion airport | Grand Junction, 73% | Salt Lake City, 46% |
| Next most common | Denver, 21% | Denver 20%, Idaho Falls 13% |
When a Jackson Hole flight diverts, four times out of five the airplane waits somewhere (usually Salt Lake City), takes off again, and lands at Jackson. You arrive late and annoyed, but you arrive by air.
When an Aspen flight diverts, that happens only about one time in four. The other three times, the diversion is the end of the flight. You get off the airplane at Grand Junction and face a 2.5 hour drive, or you land in Denver and start rebooking. That matches how airlines actually handle it: they sometimes bus passengers the remaining distance from Grand Junction rather than fly the leg again.
So the fair summary is harsher on Aspen than we expected. Aspen diverts more flights, and its diversions far more often end the journey by air.
Aspen's real consolation is on the ground. Its diversion airports are drivable, and Eagle County Regional (EGE) is only 68 miles from Aspen and flies mainline jets from major hubs, which makes it a genuine hedge you can book in advance; our Aspen vs. Eagle comparison covers when to do that. Jackson Hole's alternatives are farther: Idaho Falls (IDA) is about a 1 hour 45 minute drive over a mountain pass, and Salt Lake City is roughly 4.5 hours by car, per SlopeLab's drive-time comparison. The difference is that Jackson Hole travelers are far less likely to need that drive in the first place.
The risk math in one sentence
Aspen fails more often, and when it fails the airplane usually stops short for good. Jackson Hole fails less often, and when it does, the airplane usually still finishes the job. Aspen's advantage is that if you do get stranded, you're stranded closer to where you were going.
How to Book Each Airport
If you're flying to Jackson Hole (JAC):
- Book morning flights. Cancellations and delays compound through the day at every mountain airport as late aircraft stack up.
- Connect through a western hub. Salt Lake City and Denver are close enough that a missed connection leaves you options, including the long drive as a last resort.
- Build a buffer day in front of anything you cannot miss. About one winter round trip in 15 loses a flight, and December is the most volatile month.
If you're flying to Aspen (ASE):
- Book morning flights, doubly so. Aspen's afternoon winds and cascading regional-jet schedule make late-day flights the riskiest of all.
- Pick your dates with the data. February and December are historically the worst months; see the best and worst months to fly to Aspen.
- Watch conditions before you leave for the airport. The KASE Weather dashboard scores live Aspen conditions GREEN, YELLOW, or RED against the actual operating limits of the E175 and CRJ700. A RED morning is your cue to call the airline before the cancellation email arrives.
- Know the Eagle hedge. On a stormy travel day, a proactive rebooking to Eagle (EGE) can save the trip.
The Bottom Line
Aspen has worse flight delays than Jackson Hole, and it isn't close. Across four winters of DOT records we counted ourselves, Aspen cancelled or diverted 11.1 percent of winter arrivals to Jackson Hole's 3.8 percent, and a winter round trip through Aspen hits trouble about one time in five. Aspen's best winter in that sample was still more than twice as bad as Jackson Hole's worst. The causes are structural: no straight-in ILS, a box canyon, a one-way runway, and a two-aircraft fleet flown by a single operator.
The diversion numbers sharpen the point. Only 28 percent of diverted Aspen flights ever reached Aspen, against 81 percent at Jackson Hole. Aspen's saving grace is geography on the ground: Grand Junction, Denver, and Eagle are all drivable, so a failed flight is usually a long day rather than a lost trip.
Jackson Hole travelers shouldn't feel smug, though. Their airport still cancels or diverts one winter arrival in 27, on a short runway inside a national park, with backup airports well over an hour away. Wherever you ski, the playbook is the same: fly in the morning, pad the schedule, and check conditions before you head to the airport.
Flying to Aspen this winter? KASE Weather Premium can alert you by email when conditions start trending toward delay or diversion, hours before the gate agent knows.
How We Ran These Numbers
Every ASE and JAC figure in this article comes from our own count of the U.S. Department of Transportation's Bureau of Transportation Statistics On-Time Performance database, the same records airlines are legally required to file each month.
- What we counted: every flight scheduled to arrive at or depart from ASE and JAC in December, January, February, and March across four winters, from December 2022 through March 2026. That's 14,824 Aspen arrivals and 8,406 Jackson Hole arrivals, plus a nearly identical number of departures at each.
- How we define a problem: a flight is counted as disrupted if BTS flags it cancelled or diverted. Ordinary delays are reported separately, in the 60-plus-minute row of the first table, and are measured only against flights that actually operated.
- Round-trip risk is the chance that at least one of your two flights is cancelled or diverted, calculated from that airport's separate arrival and departure rates.
- Diversion outcomes use the database's own diverted-airport and reached-destination fields, so "eventually landed at the intended airport" means the same aircraft and flight number completed the trip.
- One limitation: BTS covers reporting airlines, which carry the overwhelming majority of scheduled service at both airports but may exclude occasional small or charter operators. Private aviation is not included at all.