Carrier route record
OOPSP→SEA
SkyWest Airlines · Palm Springs to Seattle
- Flights
- 415
- Period
- July 2025 to June 2026
- Share of route
- 25%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on PSP to SEA earns an A+. Close to nine flights in ten arrive inside the 15-minute window the DOT uses to define an on-time arrival, which puts it 10 points better than the national rate of 77.6%. When something does go wrong the average delay runs about an hour. That rests on 415 flights, with a median arrival 12 minutes early.
Set against the rest of the country, SkyWest's PSP to SEA record is 10 points better than the US average of 77.6%. That gap is worth roughly 97 fewer late arrivals for every thousand flights.
Key figures
On time
87.3%
Arrivals under 15 minutes late, of 411 completed flights
Avg delay
67 min
Across delayed arrivals only, not all flights
Cancelled
0.72%
National rate is 1.81%
Whole route
87.1%
Every carrier on PSP to SEA, 1,649 flights
These figures cover 415 flights between July 2025 and June 2026. The median arrival is 12 minutes early, which is the part an average hides: most flights here are fine, and the on-time rate is decided by a tail of badly late ones. On-time means under 15 minutes late, the DOT's own threshold.
Carrier by carrier
SkyWest against every carrier on PSP to SEA
SkyWest flew 415 of the 1,649 flights on PSP to SEA, about 25% of it. Its 87.3% on time is about level with the route as a whole at 87.1%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from SkyWest at 87.3% to Delta at 86.9%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
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) | 415 | 87.3% | 67 min | 0.72% | A+ |
| Alaska Airlines | 1,055 | 87.1% | 58 min | 1.33% | A |
| Delta Air Linesthin sample | 179 | 86.9% | 108 min | 2.23% | A |
Departure window
When SkyWest runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 415 flights.
- 5am–8am292 flights86.5%
- 8am–11am123 flights89.4%
- 11am–2pm—
- 2pm–5pm—
- 5pm–8pm—
- 8pm–5am—
Scale runs 80% to 95%. Rows with fewer than 30 flights show a dash.
The 8am–11am window is the strongest at 89.4% on time. The full set of windows spans 3 points.
Across the year
SkyWest on PSP to SEA through the year
June is the worst month at 76.7% on time, 18 points below November, the best at 94.8%. 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. October was the busiest month here, with 62 flights.
Across the week, Tuesday is the strongest day at 93.3% on time and Wednesday the weakest at 82.8%. 11 points is a smaller lever than departure hour, but it is free.
Delay causes
Why SkyWest runs late on this route
One category carries most of the weight here. Carrier accounts for 62% of the 3,499 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 62%Carrier
- 38%National Airspace System
The largest share of delay minutes, 62%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 2,179 of the 3,499 delay minutes reported here. The split is drawn from 3,499 reported delay minutes.
38% of delay minutes are charged to the National Airspace System: air traffic volume, runway configuration, ground stops. No carrier can price its way out of that, which is why airport choice moves the number here more than carrier choice does. That is 1,320 minutes out of 3,499, against a national NAS share of 21%.
Cancellations are rare at 0.72%, below the national 1.81% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.
Connections and stage length
What a delay here costs
Badly late arrivals are rare here: only 3.6% land an hour or more behind schedule, against 8.1% nationally. Connections built on this flight are about as safe as US domestic connections get, though a cancelled flight still ignores every layover you give it.
The 987 miles between these two airports put this in the middle of the US network, around two and a half to three hours of block time. That is enough cruise to absorb a ten-minute late pushback and not enough to absorb thirty. It is also long enough that the aircraft usually flies three or four legs a day rather than six, which slows how fast delay compounds.
The return leg is a different operation and performs like one: it runs 83.5% on time across 417 flights, 4 points below this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 4 points of difference.
One caution: this is a thin sample. 415 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking SkyWest on PSP to SEA
Put together: treat all of this as provisional. 415 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 87.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 411 completed flights over 12 months sit behind that.
Related
Where to go next
- PSP to SEA, every carrier
- SkyWest on SEA to PSP, the return leg
- Alaska Airlines on PSP to SEA87.1%
- Delta Air Lines on PSP to SEA86.9%
- SkyWest Airlines network-wide record
- Seattle-Tacoma International (SEA) delay statistics
- Worst months to fly in the US, ranked by the data
- How to read this site: grades, sample sizes, and honest caveats
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.