Carrier route record
OOSEA→PSC
SkyWest Airlines · Seattle to Pasco
- 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 SEA to PSC lands a B+, 7 points better than the national rate of 77.3%. About one flight in six arrives 15 minutes late or worse, and those flights are late by about an hour on average. That rests on 1,465 flights, with a median arrival 8 minutes early.
Set against the rest of the country, SkyWest's SEA to PSC record is 7 points better than the US average of 77.3%. That gap is worth roughly 65 fewer late arrivals for every thousand flights.
Key figures
On time
83.8%
Arrivals under 15 minutes late, of 1,452 completed flights
Avg delay
65 min
Across delayed arrivals only, not all flights
Cancelled
0.75%
National rate is 1.89%
Whole route
83.3%
Every carrier on SEA to PSC, 1,678 flights
These figures cover 1,465 flights between September 2025 and August 2026. The median arrival is 8 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 PSC
SkyWest flew 1,465 of the 1,678 flights on SEA to PSC, most of the route. Its 83.8% on time is about level with the route as a whole at 83.3%. Ranked by on-time rate it is first of two carriers on the route, where the range runs from SkyWest at 83.8% to Alaska at 79.3%. 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.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines (this page) | 1,465 | 83.8% | 65 min | 0.75% | B+ |
| Alaska Airlinesthin sample | 213 | 79.3% | 38 min | 2.35% | B |
Flight by flight
SkyWest flight numbers on SEA to PSC
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–8am—
- 8am–11am378 flights88.6%
- 11am–2pm255 flights79.8%
- 2pm–5pm360 flights85.5%
- 5pm–8pm57 flights80.4%
- 8pm–5am415 flights80.8%
Scale runs 70% to 95%. Rows with fewer than 30 flights show a dash.
The weak window here is the middle of the day, not the evening: 11am–2pm runs 79.8% on time against 88.6% for 8am–11am. That shape usually means a departure bank rather than an accumulating delay, so the recovery later in the afternoon is real rather than noise. The 8pm–5am window is the busiest, with 415 flights scheduled in it.
Across the year
SkyWest on SEA to PSC through the year
July is the worst month at 74.2% on time, 16 points below November, the best at 90.6%. 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 181 flights.
Across the week, Saturday is the strongest day at 88.3% on time and Thursday the weakest at 80.4%, a spread of 8 points.
Arrival by arrival
How late SkyWest on SEA to PSC runs when it is late
SkyWest on SEA to PSC often beats the schedule: 394 of 1,452 completed flights, 27%, arrived 15 minutes or more early. The 235 late arrivals split 93 under half an hour, 74 between 30 and 60 minutes, and 68 an hour or more.
- 15+ min early394 flights27.1%
- Within 15 min823 flights56.7%
- 15–29 min late93 flights6.4%
- 30–59 min late74 flights5.1%
- 1–2 hours late48 flights3.3%
- 2+ hours late20 flights1.4%
Scale runs 0% to 100%.
Share of 1,452 completed flights by arrival against schedule.
28 of 212 late departures made up the time and arrived on time, 13% of them. 51 flights left on time and still arrived late.
The worst days
Worst days for SkyWest on SEA to PSC
The latest arrival of the period was on 14 January 2026, 16 hours 41 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 |
|---|---|---|
| 14 January 2026 | 16 hours 41 minutes | Extreme weather |
| 16 February 2026 | 12 hours 17 minutes | Carrier |
| 21 November 2025 | 11 hours 6 minutes | Extreme weather |
| 4 January 2026 | 9 hours 48 minutes | Carrier |
| 14 April 2026 | 8 hours 25 minutes | Carrier |
Delay causes
Why SkyWest runs late on this route
Carrier accounts for 55% of the 15,000 delay minutes carriers reported here, and the remaining four split what is left.
- 55%Carrier
- 25%Extreme weather
- 12%Late-arriving aircraft
- 7%National Airspace System
Extreme weather accounts for 25% 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 4.2 times the usual weather exposure. The split is drawn from 15,322 reported delay minutes.
The largest share of delay minutes, 55%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. It accounts for 8,423 of the 15,000 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 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.
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 8am–11am window matters as much as it does.
The return leg is a different operation and performs like one: it runs 89.0% on time across 1,465 flights, 5 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 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 SEA to PSC
Put together: the calendar is the biggest lever here, not the carrier or the hour. November runs 90.6% on time and July 74.2%, a swing of 16 points. If the dates move at all, move them out of July before you think about anything else. 1,452 completed flights over 12 months sit behind that.
Related
Where to go next
- SEA to PSC, every carrier
- SkyWest on PSC to SEA, the return leg
- Alaska Airlines on SEA to PSC79.3%
- SkyWest Airlines network-wide record
- Seattle-Tacoma International (SEA) delay statistics
- The best time of day to fly, according to 7.05 million flight records
- Worst months to fly in the US, ranked by the data
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.