Carrier route record
OOPSC→SEA
SkyWest Airlines · Pasco to Seattle
- Flights
- 1,543
- Period
- July 2025 to June 2026
- Share of route
- 85%
- Carriers
- 2
Historical statistics for July 2025 to June 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 77.6%. When something does go wrong the average delay runs a little over an hour. That rests on 1,543 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 77.6%. That gap is worth roughly 116 fewer late arrivals for every thousand flights.
Key figures
On time
89.2%
Arrivals under 15 minutes late, of 1,532 completed flights
Avg delay
80 min
Across delayed arrivals only, not all flights
Cancelled
0.71%
National rate is 1.81%
Whole route
88.3%
Every carrier on PSC to SEA, 1,819 flights
These figures cover 1,543 flights between July 2025 and June 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.
Carrier by carrier
SkyWest against every carrier on PSC to SEA
SkyWest flew 1,543 of the 1,819 flights on PSC to SEA, most of the route. Its 89.2% on time is about level with the route as a whole at 88.3%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from SkyWest at 89.2% to Alaska at 83.1%. 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) | 1,543 | 89.2% | 80 min | 0.71% | A+ |
| Alaska Airlinesthin sample | 276 | 83.1% | 75 min | 1.45% | B |
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 1,543 flights.
- 5am–8am471 flights93.0%
- 8am–11am11 flights—
- 11am–2pm528 flights87.7%
- 2pm–5pm120 flights85.8%
- 5pm–8pm387 flights88.6%
- 8pm–5am26 flights—
Scale runs 75% to 100%. Rows with fewer than 30 flights show a dash.
The early departures do better, though not dramatically: 93.0% on time for the 5am–8am window against 85.8% for 2pm–5pm. Worth taking if the schedule allows, not worth an extra connection. The 11am–2pm window is the busiest, with 528 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 93.6% on time and Friday the weakest at 84.9%. 9 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 57% of the 13,000 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.
- 57%Carrier
- 23%Extreme weather
- 15%Late-arriving aircraft
- 5%National Airspace System
Extreme weather accounts for 23% 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 3.7 times the usual weather exposure. The split is drawn from 13,242 reported delay minutes.
The largest share of delay minutes, 57%, 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 7,506 of the 13,000 delay minutes reported here.
Cancellations are rare at 0.71%, 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 3.4% 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.
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 84.9% on time across 1,542 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.
The sample behind these figures is 1,543 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: take the 5am–8am departure, avoid April if the dates are flexible, and if two carriers are within a few dollars of each other, the top row of the table is the one with the record behind it. None of that guarantees an on-time arrival; it moves the odds by 7 points, which is the most any booking decision can do. 1,532 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 SEA83.1%
- SkyWest Airlines network-wide record
- Seattle-Tacoma International (SEA) delay statistics
- Late aircraft, weather, or the airline: what actually causes US flight delays
- The best time of day to fly, according to 7.04 million flight records
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.