Best Time to Fly PSP to SEA: On-Time Stats by Hour & Airline
Palm Springs International → Seattle/Tacoma International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 87.3% of Palm Springs (PSP) to Seattle (SEA) flights arrived on time (1,649 scheduled flights). That is 9.7 points above the national average of 77.6%.
SkyWest Airlines was the most punctual of the 3 airlines on the route at 87.8%, while Delta Air Lines trailed at 86.9%.
April has been the best month (91% on time) and Friday the weakest day of the week (83%).
1.2% of flights were cancelled, versus 1.8% nationally.
PSP to SEA 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 | 87.8% | 65 min | 0.7% | 415 |
| Alaska Airlines | 87.1% | 58 min | 1.2% | 1,055 |
| Delta Air Lines | 86.9% | 108 min | 2.2% | 179 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PSP to SEA
On-time arrival % by scheduled departure hour (local time), 3,250 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 86.2% | 0.6% | 634 |
| 8am–9am | 85.5% | 0.0% | 55 |
| 9am–10am | 88.3% | 0.0% | 249 |
| 10am–11am | 89.8% | 0.0% | 98 |
| 11am–12pm | 90.2% | 0.6% | 339 |
| 12pm–1pm | 93.1% | 1.7% | 59 |
| 1pm–2pm | 81.0% | 0.0% | 179 |
| 2pm–3pm | 81.5% | 1.1% | 454 |
| 3pm–4pm | 87.2% | 1.2% | 492 |
| 4pm–5pm | Limited data | 23 | |
| 5pm–6pm | 86.7% | 1.7% | 176 |
| 6pm–7pm | 82.9% | 0.6% | 165 |
| 7pm–8pm | 76.8% | 1.1% | 270 |
| 8pm–9pm | 92.7% | 1.8% | 56 |
| 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 PSP to SEA
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) | 89.7% | +3.7 pts | 0.0% | 78 |
| Christmas & New Year (Dec 20 - Jan 3) | 84.4% | -1.7 pts | 1.8% | 163 |
| Summer peak (Jun 15 - Aug 15) | 78.3% | -7.8 pts | 1.6% | 248 |
| All other days | 86.1% | — | 0.7% | 2,761 |
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).