Carrier route record

OOPSP→SEA

SkyWest Airlines · Palm Springs to Seattle

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 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 11 points better than the national rate of 77.3%. When something does go wrong the average delay runs a little over an hour. That rests on 391 flights, with a median arrival 12 minutes early.

Set against the rest of the country, SkyWest's PSP to SEA record is 11 points better than the US average of 77.3%. That gap is worth roughly 106 fewer late arrivals for every thousand flights.

On time

87.9%

Arrivals under 15 minutes late, of 387 completed flights

Avg delay

69 min

Across delayed arrivals only, not all flights

Cancelled

0.77%

National rate is 1.89%

Whole route

87.4%

Every carrier on PSP to SEA, 1,638 flights

These figures cover 391 flights between September 2025 and August 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.

Fare search by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

Carrier by carrier

SkyWest against every carrier on PSP to SEA

SkyWest flew 391 of the 1,638 flights on PSP to SEA, about 24% of it. Its 87.9% on time is about level with the route as a whole at 87.4%. Ranked by on-time rate it is first of three carriers on the route, where the range runs from SkyWest at 87.9% 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.

On-time performance by carrier on PSP to SEA
Airline	Flights	On time	Avg delay	Cancelled	Grade
SkyWest Airlines (this page)	391	87.9%	69 min	0.77%	A+
Alaska Airlines	1,068	87.3%	60 min	1.31%	A
Delta Air Linesthin sample	179	86.9%	108 min	2.23%	A

Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.

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–8am280 flights87.0%
8am–11am111 flights90.1%
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 90.1% on time. The full set of windows spans 3 points.

Across the year

SkyWest on PSP to SEA through the year

Jul–Sep 202560 flights91.7%
Oct–Dec 2025166 flights89.7%
Jan–Mar 202626 flights—
Apr–Jun 202690 flights84.3%
Jul–Sep 202649 flights81.6%

Scale runs 75% to 95%. 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 87.9% on time across 391 flights.

SkyWest on PSP to SEA did not run the same all year. Its best quarter was Jul–Sep 2025 at 91.7% on time and its weakest Jul–Sep 2026 at 81.6%, a swing of 10 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 94.7% on time and Wednesday the weakest at 81.8%, a spread of 13 points.

Arrival by arrival

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

SkyWest on PSP to SEA often beats the schedule: 167 of 387 completed flights, 43%, arrived 15 minutes or more early. The 47 late arrivals split 19 under half an hour, 15 between 30 and 60 minutes, and 13 an hour or more.

15+ min early167 flights43.2%
Within 15 min173 flights44.7%
15–29 min late19 flights4.9%
30–59 min late15 flights3.9%
1–2 hours late8 flights2.1%
2+ hours late5 flights1.3%

Scale runs 0% to 100%.

Share of 387 completed flights by arrival against schedule.

9 of 35 late departures made up the time and arrived on time, 26% of them. In the other direction, 21 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 SEA.

The worst days

Worst days for SkyWest on PSP to SEA

The latest arrival of the period was on 3 January 2026, 8 hours 13 minutes behind schedule; most of its delay minutes were filed as national airspace system delay. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).

The latest arrivals of SkyWest on PSP to SEA in the period
Date	Arrived late by	Largest filed cause
3 January 2026	8 hours 13 minutes	National Airspace System
3 January 2026	6 hours 43 minutes	National Airspace System
27 December 2025	5 hours 55 minutes	Carrier
29 June 2026	2 hours 18 minutes	Carrier
22 April 2026	2 hours 2 minutes	Carrier

Delay causes

Why SkyWest runs late on this route

Carrier accounts for 65% of the 3,231 delay minutes carriers reported here, and the remaining four split what is left.

Carrier
65%
National Airspace System
35%

The largest share of delay minutes, 65%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 2,086 of the 3,231 delay minutes reported here. The split is drawn from 3,231 reported delay minutes.

35% 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 1,145 minutes out of 3,231, against a national NAS share of 21%.

Cancellations are rare at 0.77%, below the national 1.89% 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 3.4% 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 80.3% on time across 391 flights, 8 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 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 PSP to SEA

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 87.9% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 387 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