Tri Cities (PSC) Delays and On-Time Departures
Pasco/Kennewick/Richland, WA · ranked 15th of 333 airports for on-time departures
Data through July 2026 · Last updated October 18, 2026
88.4% of the 6,190 flights scheduled to depart Pasco/Kennewick/Richland (PSC) in the last 12 months left on time, 10.9 points above the US average of 77.4%.
That ranks 15th of 333 US airports tracked on this site, with 0.5% of departures cancelled.
Among airlines at Pasco/Kennewick/Richland (PSC), Delta Air Lines left on time most often (93.2%).
Over 24 months, Tuesday was the most reliable day (90% on time) and January the worst month (85%).
Best time of day to fly out of Pasco/Kennewick/Richland (PSC)
On-time departure % by scheduled departure hour (local time), last 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 2am–3am | Limited data | 1 | |
| 5am–6am | 93.7% | 0.3% | 2,400 |
| 6am–7am | 94.3% | 0.2% | 1,727 |
| 7am–8am | 89.1% | 0.3% | 1,003 |
| 8am–9am | 85.8% | 1.4% | 486 |
| 9am–10am | 93.3% | 0.0% | 255 |
| 10am–11am | 85.9% | 0.0% | 156 |
| 11am–12pm | 89.6% | 0.0% | 782 |
| 12pm–1pm | 89.8% | 0.2% | 1,046 |
| 1pm–2pm | 80.5% | 0.8% | 1,448 |
| 2pm–3pm | 86.9% | 0.3% | 375 |
| 3pm–4pm | 86.0% | 0.0% | 629 |
| 4pm–5pm | 79.6% | 0.0% | 49 |
| 5pm–6pm | 87.5% | 0.1% | 1,414 |
| 6pm–7pm | 77.7% | 0.9% | 213 |
| 7pm–8pm | 72.0% | 0.5% | 194 |
| 8pm–9pm | 73.9% | 1.4% | 70 |
| 9pm–10pm | 71.1% | 0.0% | 83 |
Airlines at PSC ranked by on-time departures
Last 12 months. Airlines with fewer than 30 departures are marked “limited data”.
| Airline | On-time departures | On-time arrivals | Cancelled | Departures |
|---|---|---|---|---|
| Delta Air Lines | 93.2% | 93.0% | 0.3% | 592 |
| United Airlines | 89.8% | 91.1% | 0.8% | 363 |
| SkyWest Airlines | 88.8% | 87.6% | 0.4% | 4,664 |
| Alaska Airlines | 83.1% | 82.0% | 1.5% | 265 |
| Allegiant Air | 75.7% | 72.1% | 0.3% | 306 |
80%+ good 70–79.9% fair <70% poor
Best day to fly out of PSC
On-time departures by day, 24 months.
Best month to fly out of PSC
On-time departures by month, 24 months.
Holiday travel at Pasco/Kennewick/Richland (PSC)
On-time departures during holiday periods compared with all other days, last 24 months.
| Period | On-time departures | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | 87.5% | -1.2 pts | 0.0% | 264 |
| Christmas & New Year (Dec 20 - Jan 3) | 86.7% | -2.0 pts | 0.5% | 564 |
| Summer peak (Jun 15 - Aug 15) | 88.9% | +0.2 pts | 0.4% | 2,154 |
| All other days | 88.7% | — | 0.3% | 9,349 |
Monthly on-time departure trend at PSC
On-time departure % each month, with the 12-month US average for reference.
Routes from Pasco/Kennewick/Richland (PSC)
Every route from PSC with its own page, by number of flights (last 12 months, on-time arrivals).
| To | On time | Cancelled | Flights |
|---|---|---|---|
| PSC → Seattle (SEA) | 88.4% | 0.9% | 1,727 |
| PSC → Salt Lake City (SLC) | 93.8% | 0.2% | 1,178 |
| PSC → Denver (DEN) | 89.4% | 0.6% | 728 |
| PSC → Phoenix (PHX) | 89.3% | 0.0% | 693 |
| PSC → San Francisco (SFO) | 71.0% | 0.2% | 596 |
| PSC → Minneapolis (MSP) | 91.8% | 0.3% | 365 |
| PSC → Los Angeles (LAX) | 88.2% | 0.8% | 359 |
| PSC → Burbank (BUR) | 84.0% | 1.6% | 186 |