Salt Lake City (SLC) to Pasco/Kennewick/Richland (PSC): On-Time Performance
Data through July 2026
The calendar drives reliability on SLC–PSC. September 2025 flights landed on schedule 95% of the time, but February 2025 dropped to 78% — a gap of 17 points. Across the full period the route averages 88% on-time against a national 78%. Morning departures also hold up better than evening ones (93% vs 83%), which matters most in the rough months.
- On-time
- 88%
- arrived <15 min late
- Avg delay
- 8 min
- completed flights
- Cancelled
- 0.1%
- Flights/day
- 3.2
- last 12 months
- Duration
- 1h 47m
- scheduled
- Distance
- 521 mi
Best airline from SLC to PSC
2 airlines flew this route regularly between 2024-07 and 2026-07.
| Airline | On-time | Avg delay | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlinesmost reliable | 90% | 6 min | 0.1% | 1,796 |
| Delta Air Lines | 83% | 13 min | 0.3% | 626 |
Monthly on-time trend
Best time to fly from SLC to PSC
Aim for departures around 8 a.m. (97% on-time); avoid 9 p.m. departures (82%).
By day of week
| Day | On-time | Avg delay |
|---|---|---|
| Monday | 87% | 7 min |
| Tuesdaybest | 89% | 6 min |
| Wednesday | 88% | 11 min |
| Thursdaybest | 89% | 6 min |
| Friday | 87% | 11 min |
| Saturday | 88% | 7 min |
| Sunday | 88% | 8 min |
What causes delays on this route
Share of total delay minutes by cause, as reported by carriers to the US DOT.
- Late-arriving aircraft10%
- Airline operations62%
- National airspace system7%
- Weather22%
Frequently asked questions
- How often are flights from SLC to PSC delayed?
- 12% of SLC–PSC flights arrived 15 or more minutes late (the US DOT definition of a delay) between 2024-07 and 2026-07. The average arrival delay across completed flights was 8 minutes.
- Which airline is most reliable from SLC to PSC?
- SkyWest Airlines has the best on-time record on this route at 90%, based on 1,796 flights. 2 airlines flew SLC–PSC frequently enough to compare in this period.
- What is the best time of day to fly from SLC to PSC?
- Departures around 8 a.m. have the best record (97% on-time), while departures around 9 p.m. have the worst (82%). As on most US routes, delays accumulate through the day, so earlier flights are generally safer.
- How long is the flight from SLC to PSC?
- The scheduled SLC–PSC flight time averages 1h 47m over 521 miles. Actual arrival times vary — flights on this route land 15+ minutes late 12% of the time.
- How often are SLC to PSC flights cancelled?
- 0.1% of scheduled flights on this route were cancelled between 2024-07 and 2026-07, at or below the national rate of 1.6%.
- What is the worst month to fly from SLC to PSC?
- February 2025 was the roughest month in this dataset, with only 78% of arrivals on time. The best was September 2025 at 95%. If your dates are flexible, that 17-point gap is worth planning around.
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Based on 2,422 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.