Best Time to Fly SFO to PIT: On-Time Stats by Hour & Airline
San Francisco International → Pittsburgh International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 88.8% of San Francisco (SFO) to Pittsburgh (PIT) flights arrived on time (555 scheduled flights). That is 11.2 points above the national average of 77.6%.
United Airlines was the only reporting airline with regular flights on this route.
November has been the best month (94% on time) and Thursday the weakest day of the week (82%).
0.2% of flights were cancelled, versus 1.8% nationally.
SFO to PIT 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 | 88.8% | 46 min | 0.2% | 555 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly SFO to PIT
On-time arrival % by scheduled departure hour (local time), 1,114 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 7am–8am | 97.9% | 0.0% | 48 |
| 8am–9am | 91.1% | 0.0% | 463 |
| 9am–10am | Limited data | 1 | |
| 10am–11am | 84.1% | 0.0% | 69 |
| 12pm–1pm | Limited data | 8 | |
| 1pm–2pm | 92.3% | 1.1% | 92 |
| 2pm–3pm | Limited data | 3 | |
| 4pm–5pm | Limited data | 4 | |
| 9pm–10pm | 81.0% | 0.0% | 290 |
| 10pm–11pm | 82.3% | 2.8% | 36 |
| 11pm–12am | 82.0% | 0.0% | 100 |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on SFO to PIT
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) | 85.2% | -3.2 pts | 1.8% | 56 |
| Summer peak (Jun 15 - Aug 15) | 83.3% | -5.1 pts | 0.0% | 228 |
| All other days | 88.4% | — | 0.1% | 804 |
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).