Carrier route record

OOSEA→PSP

SkyWest Airlines · Seattle to Palm Springs

Flights: 391
Period: September 2025 to August 2026
Share of route: 24%
Carriers: 3

Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.

SkyWest on SEA to PSP lands a B, 3 points better than the national rate of 77.3%. About one flight in five arrives 15 minutes late or worse, and those flights are late by roughly 50 minutes on average. That rests on 391 flights, with a median arrival 7 minutes early.

The US average over the same twelve months is 77.3%, so there is little to separate SkyWest on SEA to PSP from the country as a whole. The variation that matters here is internal: which carrier, and what time of day.

On time

80.3%

Arrivals under 15 minutes late, of 385 completed flights

Avg delay

52 min

Across delayed arrivals only, not all flights

Cancelled

1.28%

National rate is 1.89%

Whole route

82.7%

Every carrier on SEA to PSP, 1,641 flights

These figures cover 391 flights between September 2025 and August 2026. The median arrival is 7 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.

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Carrier by carrier

SkyWest against every carrier on SEA to PSP

SkyWest flew 391 of the 1,641 flights on SEA to PSP, about 24% of it. Its 80.3% on time is 2 points worse than the route as a whole, which runs 82.7%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Alaska at 83.6% to SkyWest at 80.3%. 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.

On-time performance by carrier on SEA to PSP
Airline	Flights	On time	Avg delay	Cancelled	Grade
Alaska Airlines	1,071	83.6%	47 min	0.65%	B+
Delta Air Linesthin sample	179	82.9%	53 min	2.23%	B
SkyWest Airlines (this page)	391	80.3%	52 min	1.28%	B

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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 391 flights.

5am–8am—
8am–11am—
11am–2pm—
2pm–5pm1 flights—
5pm–8pm128 flights81.1%
8pm–5am262 flights79.8%

Scale runs 70% to 85%. Rows with fewer than 30 flights show a dash.

The overnight block holds up unusually well at 79.8% on time across 262 flights. Red-eyes fly into empty airspace and empty gates, and they are the first rotation of the aircraft's day rather than the last. The 8pm–5am window is the busiest, with 262 flights scheduled in it.

Across the year

SkyWest on SEA to PSP through the year

Jul–Sep 202560 flights86.7%
Oct–Dec 2025167 flights82.0%
Jan–Mar 202626 flights—
Apr–Jun 202690 flights82.0%
Jul–Sep 202648 flights65.2%

Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.

Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 80.3% on time across 391 flights.

SkyWest on SEA to PSP did not run the same all year. Its best quarter was Jul–Sep 2025 at 86.7% on time and its weakest Jul–Sep 2026 at 65.2%, a swing of 22 points on roughly 98 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Across the week, Tuesday is the strongest day at 84.9% on time and Friday the weakest at 73.2%, a spread of 12 points.

Arrival by arrival

How late SkyWest on SEA to PSP runs when it is late

SkyWest on SEA to PSP often beats the schedule: 121 of 385 completed flights, 31%, arrived 15 minutes or more early. The 76 late arrivals split 35 under half an hour, 23 between 30 and 60 minutes, and 18 an hour or more.

15+ min early121 flights31.4%
Within 15 min188 flights48.8%
15–29 min late35 flights9.1%
30–59 min late23 flights6.0%
1–2 hours late10 flights2.6%
2+ hours late8 flights2.1%

Scale runs 0% to 100%.

Share of 385 completed flights by arrival against schedule.

14 of 70 late departures made up the time and arrived on time, 20% of them. In the other direction, 20 flights left on time yet arrived 15 minutes late or more, so that delay built up after pushback: in the air, in a holding pattern or on the ground at PSP.

The worst days

Worst days for SkyWest on SEA to PSP

The latest arrival of the period was on 26 December 2025, 3 hours 40 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). The same cause led on four of the five worst days.

The latest arrivals of SkyWest on SEA to PSP in the period
Date	Arrived late by	Largest filed cause
26 December 2025	3 hours 40 minutes	Carrier
31 December 2025	2 hours 57 minutes	Late-arriving aircraft
26 September 2025	2 hours 52 minutes	Carrier
23 October 2025	2 hours 28 minutes	Carrier
22 July 2026	2 hours 21 minutes	Carrier

Delay causes

Why SkyWest runs late on this route

Carrier accounts for 45% of the 3,934 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
45%
Late-arriving aircraft
41%
National Airspace System
10%
Extreme weather
4%
Security
1%

41% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 3,934 reported delay minutes here, that single category outweighs weather by 12 to one. The split is drawn from 3,934 reported delay minutes.

The largest share of delay minutes, 45%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 1,751 of the 3,934 delay minutes reported here.

Cancellations sit at 1.28% against a national 1.89%, which is ordinary. Diversions add another 0.26%.

Connections and stage length

What a delay here costs

Badly late arrivals are rare here: only 4.7% land an hour or more behind schedule, against 8.3% 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.

The return leg is a different operation and performs like one: it runs 87.9% on time across 391 flights, 8 points above 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 8 points of difference.

One caution: this is a thin sample. 391 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 SEA to PSP

Put together: treat all of this as provisional. 391 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 80.3% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 385 completed flights over 12 months sit behind that.

Where to go next

Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated 22 October 2026; recomputed monthly. How this data is collected.

Key figures