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Flight Reliability

AA 509 · American Airlines

Dallas–Fort Worth → Sacramento (DFW–SMF)82% of its flights flew this route. The rest (ORD–PIT, ORD–SJC) are included in these numbers.

20
Bring Snacks
WanderNerd Reliability Score
47%
Arrive within 15 minutes
36 min
Average arrival delay
5.0%
Cancelled
17 min
Median arrival delay

Based on 161 historical flights. Data through May 2026.

What the data says

Skip Tuesday if you can.

AA 509 arrived on time 52% of the time on Fridays. On Tuesdays: 41%.

Well behind the DFW–SMF route.

AA 509 arrived on time 47% of the time, versus 68% across the DFW–SMF route.

Well behind the American Airlines network.

AA 509 arrived on time 47% of the time, versus 77% across the American Airlines network.

Keep a backup plan handy.

AA 509 was cancelled 5.0% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon42%(26 flights)
  • Tue41%(17 flights)
  • Wed44%(18 flights)
  • Thu52%(27 flights)
  • Fri52%(25 flights)
  • Sat47%(17 flights)
  • Sun50%(22 flights)
On-time by departure window
  • 6–9 AM—(3 flights)
  • 6–9 PM48%(25 flights)
  • 9 PM–12 AM46%(124 flights)
On-time trend by month
57%
May

Jun 36% → May 57% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202536%28
July 202531%26
September 202550%26
October 202553%30
April 202669%13
May 202657%21
Departures on time
43%
Diverted
0.6%
Flights flown
152
Months covered
9

Same route, other flights

Keep nerding

Based on 161 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.