Best Time to Fly PIT to SFO: On-Time Stats by Hour & Airline
Pittsburgh International → San Francisco International
Data through July 2026 · Last updated October 18, 2026
555 flights were scheduled from Pittsburgh (PIT) to San Francisco (SFO) in the last 12 months, and 80.9% of those that flew arrived on time, 3.3 points above the US average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
Over 24 months, Tuesday was the most reliable day (85% on time) and December the worst month (69%).
The cancellation rate was 0.5% (US average 1.8%).
PIT to SFO 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 |
|---|---|---|---|---|
| United Airlines | 80.9% | 69 min | 0.5% | 555 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly PIT to SFO
On-time arrival % by scheduled departure hour (local time), 1,115 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 6am–7am | 88.0% | 0.2% | 462 |
| 7am–8am | 89.6% | 0.9% | 107 |
| 8am–9am | 87.1% | 1.6% | 63 |
| 9am–10am | 89.3% | 1.8% | 57 |
| 5pm–6pm | 73.0% | 0.3% | 370 |
| 6pm–7pm | Limited data | 14 | |
| 7pm–8pm | 51.2% | 2.4% | 42 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on PIT to SFO
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) | 61.8% | -22.1 pts | 1.8% | 56 |
| Summer peak (Jun 15 - Aug 15) | 77.2% | -6.8 pts | 0.0% | 228 |
| All other days | 84.0% | — | 0.6% | 805 |
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).