Historical on-time performance
Raleigh-durham to San Francisco
2,400 miData through May 2026Source: US DOT · BTS
Flights on RDU–SFO arrive on time 83% of the time over the last 12 months.
On-time rate83%arrived within 15 min
p90 delay25 min1 in 10 flights is worse (tail risk)
Cancelled0.2%of scheduled flights
based on 901 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- United AirlinesOn-time83%Medianon timep9025 minCancel0.2%Flights901
Why flights run late
Delay causes
- Airline19%
- Weather2%
- Air traffic (NAS)46%
- Late aircraft33%
- Security0%
Most delay minutes here are attributed to Air traffic (NAS).
When flights don't go
Why flights were cancelled
- Airline0%
- Weather100%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Weather. Shares are among 2 cancellations with a reported cause (BTS reports causes from June 2003).
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly RDU → SFO
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 87% on time.
- Mornings87% on time · p90 15 min · 1,273 flights
- Evenings73% on time · p90 55 min · 948 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 79% to 86% on time.
- Tuesdays86% on time · p90 20 min · 286 flights
- Wednesdays82% on time · p90 30 min · 301 flights
- Saturdays82% on time · p90 30 min · 285 flights
- Mondays81% on time · p90 40 min · 346 flights
- Thursdays81% on time · p90 35 min · 350 flights
- Sundays79% on time · p90 30 min · 348 flights
- Fridays79% on time · p90 40 min · 355 flights
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