San Francisco to Phoenix Flight Delays
San Francisco to Phoenix flights are delayed approximately 31% of the time on average. San Francisco (SFO) has a congestion score of high and a weather risk level of moderate. Phoenix (PHX) has 3 runways and a NAS vulnerability score of low. Use DelayGuard's AI-powered predictor to check today's delay probability before you fly.
- How often do SFO to PHX flights get delayed?
- Based on historical BTS data, San Francisco to Phoenix flights are delayed approximately 31% of the time. Delays are most common during peak summer months and holiday travel periods.
- What is the best time of year to fly SFO to PHX?
- The lowest delay risk for San Francisco to Phoenix is typically in the fall (September–November), when weather is mild and travel demand drops after summer peak. Avoid June–August and December–January for the lowest chance of delays.
- Which airline is most reliable on SFO to PHX?
- Reliability varies by route. Use the DelayGuard predictor to compare airlines on the SFO to PHX route with real-time delay probability estimates.
- How accurate is DelayGuard's delay prediction for this route?
- DelayGuard's v9 model is trained on 20+ million BTS flight records from 2023–2025 and uses live weather, FAA delay programs, and historical route performance to generate predictions. Visit delayguard.ai to check the current prediction for SFO to PHX.