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Flight Reliability

AA 6404 · American Airlines

San Francisco → Phoenix (SFO–PHX)97% of its flights flew this route. The rest (BFL–PHX) are included in these numbers.

96
Nerd Approved
WanderNerd Reliability Score
91%
Arrive within 15 minutes
2 min early
Average arrival delay
0.6%
Cancelled
8 min early
Median arrival delay

Based on 330 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

AA 6404 departing between 6–9 AM arrived on time 95% of the time, versus 78% between 6–9 PM.

Saturday has been the better bet.

A small edge: 94% on time on Saturdays against 87% on Mondays.

Better than the SFO–PHX route average.

AA 6404 arrived on time 91% of the time, versus 76% across the SFO–PHX route.

Better than the American Airlines network average.

AA 6404 arrived on time 91% of the time, versus 77% across the American Airlines network.

The breakdown

On-time by weekday
  • Mon87%(47 flights)
  • Tue91%(43 flights)
  • Wed92%(49 flights)
  • Thu89%(46 flights)
  • Fri92%(48 flights)
  • Sat94%(46 flights)
  • Sun90%(49 flights)
On-time by departure window
  • 3–6 AM90%(61 flights)
  • 6–9 AM95%(164 flights)
  • 9 AM–12 PM92%(36 flights)
  • 12–3 PM—(1 flights)
  • 3–6 PM—(6 flights)
  • 6–9 PM78%(60 flights)
On-time trend by month
63%
May

Jun 93% → May 63% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%29
July 202594%31
August 202597%29
September 202590%30
October 202597%30
November 202590%30
December 2025100%31
January 202697%31
February 202687%15
March 202692%26
April 202677%22
May 202663%24
Departures on time
93%
Diverted
0%
Flights flown
328
Months covered
12

Same route, other flights

Keep nerding

Based on 330 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.