Best Time to Fly DEN to PSC: On-Time Stats by Hour & Airline
Denver International → Tri Cities
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 75.8% of Denver (DEN) to Pasco/Kennewick/Richland (PSC) flights arrived on time (729 scheduled flights). That is 1.9 points below the national average of 77.6%.
SkyWest Airlines was the most punctual of the 2 airlines on the route at 81.0%, while United Airlines trailed at 70.4%.
September has been the best month (91% on time) and Thursday the weakest day of the week (75%).
0.1% of flights were cancelled, versus 1.8% nationally.
DEN to PSC on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| SkyWest Airlines | 81.0% | 66 min | 0.3% | 366 |
| United Airlines | 70.4% | 79 min | 0.0% | 363 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly DEN to PSC
On-time arrival % by scheduled departure hour (local time), 1,460 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 11am–12pm | 83.4% | 0.1% | 730 |
| 4pm–5pm | Limited data | 1 | |
| 7pm–8pm | 72.0% | 0.3% | 726 |
| 8pm–9pm | Limited data | 2 | |
| 9pm–10pm | Limited data | 1 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on DEN to PSC
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 26 | ||
| Christmas & New Year (Dec 20 - Jan 3) | 87.9% | +8.5 pts | 0.0% | 60 |
| Summer peak (Jun 15 - Aug 15) | 67.3% | -12.1 pts | 0.4% | 247 |
| All other days | 79.5% | — | 0.2% | 1,127 |
Monthly on-time trend
On-time arrival % each month, with the 12-month US average for reference.
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).