Route on-time record
PSC to SEA: most on-time flights and the best time to fly
Pasco (Tri Cities Airport) to Seattle (Seattle–Tacoma International Airport). 1,915 nonstop flights in Jun 2025 to May 2026, 88% arrived within 15 minutes and 0.8% were cancelled. The most reliable flight number was SkyWest 3972 at 5:25 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
PSC → SEA
Pasco to Seattle: 1,915 nonstop flights a year
On time (12 months)
88%
Cancelled
0.8%
avg delay 10 min
Best time to leave
Before 9 AM
92% on time vs 80% 9 AM to noon
Most reliable airline
SkyWest
89% chance on time
Lowest nonstop fare seen in the next two months: $311 (Alaska 3110 on 2026-10-27). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · SkyWest 3972 · sold as United Express, Delta Connection, American Eagle or Alaska
5:25 AM → 6:44 AM1h 20m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 92%
- Cancelled
- 0.0%
- Avg arrival delay
- 19 min
- Arrived on time 92% of the time (170 flights, Jun 2025 to May 2026).
- Never cancelled in 170 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 92% on time; 9 AM to noon: 80%).
Moderate track record · 170 flights
Find 5:25 AM flight fares Opens this date on Aviasales#2 · SkyWest 3352 · sold as United Express, Delta Connection, American Eagle or Alaska
4:19 PM → 5:28 PM1h 09m nonstop
Local times, typical schedule. Last flown 2026-05-12.
87%
chance on time
- On time (history)
- 86%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 86% of the time (21 flights, Jun 2025 to May 2026).
- Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
- 76% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 21 flights
Find 4:19 PM flight fares Opens this date on Aviasales#3 · SkyWest 3992 · sold as United Express, Delta Connection, American Eagle or Alaska
12:29 PM → 1:45 PM1h 16m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 88%
- Cancelled
- 1.0%
- Avg arrival delay
- 9 min
- Arrived on time 88% of the time (100 flights, Jun 2025 to May 2026).
Moderate track record · 100 flights
Find 12:29 PM flight fares Opens this date on Aviasales#4 · SkyWest 3890 · sold as United Express, Delta Connection, American Eagle or Alaska
5:30 PM → 6:44 PM1h 14m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 84%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 84% of the time (25 flights, Jun 2025 to May 2026).
- Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
Limited track record · 25 flights
Find 5:30 PM flight fares Opens this date on Aviasales#5 · SkyWest 3955 · sold as United Express, Delta Connection, American Eagle or Alaska
3:30 PM → 4:43 PM1h 13m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.0%
- Avg arrival delay
- 16 min
- Arrived on time 88% of the time (25 flights, Jun 2025 to May 2026).
- Lands inside SEA's trouble window: 54% of its 68 ground stops and delay programs started between 4 PM and 10 PM.
Limited track record · 25 flights
Find 3:30 PM flight fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)89%
1,609 flights · 89% on time as flown · 0.7% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM92%
722 flights · avg delay 12 min
- 9 AM to noon80%
122 flights · avg delay 12 min
- Noon to 3 PM86%
555 flights · avg delay 9 min
- 3 to 6 PM88%
440 flights · avg delay 8 min
- 6 to 9 PM83%
76 flights · avg delay 9 min
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Airline (crew, maintenance, boarding)50%
- Late-arriving aircraft24%
- Severe weather17%
- Air traffic control and airport volume9%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
PSC to SEA questions
- What time of day is best to fly PSC to SEA?
- Before 9 AM: 92% of flights arrived on time, against 80% for departures 9 AM to noon. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from PSC to SEA?
- SkyWest, with a season-adjusted 89% chance of operating and arriving on time over 1,609 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on PSC to SEA?
- January (81% on time); the best was March (92%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from PSC
- SEA to PSC (return)
- PSC to SLC 93%
- PSC to DEN 89%
- PSC to PHX 91%
- PSC to SFO 82%
- PSC to MSP 92%
- PSC to LAX 90%
Live status: FAA delays and ground stops