Carrier route record
OOPSC→SEA
SkyWest Airlines · Pasco to Seattle
- Flights
- 1,465
- Period
- September 2025 to August 2026
- Share of route
- 87%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with SkyWest Airlines.
SkyWest on PSC 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 12 points better than the national rate of 77.3%. When something does go wrong the average delay runs an hour and a half. That rests on 1,465 flights, with a median arrival 11 minutes early.
Set against the rest of the country, SkyWest's PSC to SEA record is 12 points better than the US average of 77.3%. That gap is worth roughly 117 fewer late arrivals for every thousand flights.
Key figures
On time
89.0%
Arrivals under 15 minutes late, of 1,454 completed flights
Avg delay
88 min
Across delayed arrivals only, not all flights
Cancelled
0.75%
National rate is 1.89%
Whole route
88.6%
Every carrier on PSC to SEA, 1,679 flights
These figures cover 1,465 flights between September 2025 and August 2026. The median arrival is 11 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 PSC to SEA
SkyWest flew 1,465 of the 1,679 flights on PSC to SEA, most of the route. Its 89.0% on time is about level with the route as a whole at 88.6%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from SkyWest at 89.0% to Alaska at 85.8%. 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) | 1,465 | 89.0% | 88 min | 0.75% | A+ |
| Alaska Airlinesthin sample | 214 | 85.8% | 93 min | 0.93% | A+ |
Flight by flight
SkyWest flight numbers on PSC to SEA
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 1,465 flights.
- 5am–8am434 flights92.1%
- 8am–11am23 flights—
- 11am–2pm466 flights87.6%
- 2pm–5pm182 flights87.9%
- 5pm–8pm341 flights88.2%
- 8pm–5am19 flights—
Scale runs 80% to 100%. Rows with fewer than 30 flights show a dash.
The early departures do better, though not dramatically: 92.1% on time for the 5am–8am window against 87.6% for 11am–2pm. Worth taking if the schedule allows, not worth an extra connection. The 11am–2pm window is the busiest, with 466 flights scheduled in it.
Across the year
SkyWest on PSC to SEA through the year
Delays peak in April, when the on-time rate falls to 86.2%. March is the strongest month at 93.0%. Moving a flexible trip across that boundary buys 7 points. October was the busiest month here, with 181 flights.
Across the week, Tuesday is the strongest day at 93.1% on time and Thursday the weakest at 86.3%, a spread of 7 points.
Arrival by arrival
How late SkyWest on PSC to SEA runs when it is late
SkyWest on PSC to SEA often beats the schedule: 548 of 1,454 completed flights, 38%, arrived 15 minutes or more early. The 160 late arrivals split 58 under half an hour, 45 between 30 and 60 minutes, and 57 an hour or more.
- 15+ min early548 flights37.7%
- Within 15 min746 flights51.3%
- 15–29 min late58 flights4.0%
- 30–59 min late45 flights3.1%
- 1–2 hours late22 flights1.5%
- 2+ hours late35 flights2.4%
Scale runs 0% to 100%.
Share of 1,454 completed flights by arrival against schedule.
29 of 158 late departures made up the time and arrived on time, 18% of them. 31 flights left on time and still arrived late.
The worst days
Worst days for SkyWest on PSC to SEA
The latest arrival of the period was on 15 January 2026, 10 hours 53 minutes behind schedule; most of its delay minutes were filed as extreme weather. On three of the five worst days the largest share was filed as carrier-caused (crew, maintenance, fuelling, baggage).
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 15 January 2026 | 10 hours 53 minutes | Extreme weather |
| 2 August 2026 | 9 hours 52 minutes | Carrier |
| 16 December 2025 | 9 hours 16 minutes | Carrier |
| 13 February 2026 | 8 hours 37 minutes | Extreme weather |
| 14 October 2025 | 7 hours 19 minutes | Carrier |
Delay causes
Why SkyWest runs late on this route
Carrier accounts for 61% of the 14,000 delay minutes carriers reported here, and the remaining four split what is left.
- 61%Carrier
- 21%Extreme weather
- 12%Late-arriving aircraft
- 5%National Airspace System
Extreme weather accounts for 21% 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 3.6 times the usual weather exposure. The split is drawn from 14,140 reported delay minutes.
The largest share of delay minutes, 61%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 8,688 of the 14,000 delay minutes reported here.
Cancellations are rare at 0.75%, 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 3.9% 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.
At 172 miles this is a short hop, and stage length matters more than it looks. A flight this short spends under two hours in the air, which leaves almost nothing to claw back a late pushback with. Delay here is decided on the ground, in the turn, which is why the 5am–8am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 83.8% on time across 1,465 flights, 5 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 5 points of difference.
The sample behind these figures is 1,465 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.
What to do with this
Booking SkyWest on PSC to SEA
Put together: there is no lever worth pulling here. Departure windows span 5 points, carriers span half a point, and the calendar spans 7 points. Book on price and schedule, and plan around the 89.0% base rate rather than trying to beat it. 1,454 completed flights over 12 months sit behind that.
Related
Where to go next
- PSC to SEA, every carrier
- SkyWest on SEA to PSC, the return leg
- Alaska Airlines on PSC to SEA85.8%
- SkyWest Airlines network-wide record
- Seattle-Tacoma International (SEA) delay statistics
- Late aircraft, weather, or the airline: what actually causes US flight delays
- Seattle and Portland airports: why the evening flight holds up
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.