Historical on-time performance
San Francisco to Pittsburgh
2,254 miData through Dec 2025Source: US DOT · BTS
Flights on SFO–PIT arrive on time 87% of the time over the last 12 months.
On-time rate87%arrived within 15 min
p90 delay15 min1 in 10 flights is worse (tail risk)
Cancelled0.0%of scheduled flights
based on 540 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time87%Medianon timep9015 minCancel0.0%Flights540
Why flights run late
Delay causes
- Airline25%
- Weather0%
- Air traffic (NAS)29%
- Late aircraft45%
- Security0%
Most delay minutes here are attributed to Late aircraft.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SFO → PIT
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Mornings are the most reliable time of day to fly this route — 91% on time.
- Mornings91% on time · p90 10 min · 547 flights
- Middays85% on time · p90 25 min · 258 flights
- Overnights80% on time · p90 25 min · 825 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 90% on time.
- Tuesdays90% on time · p90 15 min · 214 flights
- Wednesdays89% on time · p90 10 min · 225 flights
- Fridays85% on time · p90 20 min · 252 flights
- Saturdays84% on time · p90 20 min · 187 flights · limited
- Mondays84% on time · p90 25 min · 252 flights
- Thursdays81% on time · p90 20 min · 250 flights
- Sundays79% on time · p90 25 min · 251 flights
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