AA3121 SAN → DFW

American Airlines · San Diego, CA to Dallas/Fort Worth, TX · 24 flights observed, 2026-02-12 to 2026-03-07 · 1,171 mi

This flight has been getting more reliable recently — 2026-03's on-time rate (100%) is well above the 71% average from earlier months.

AA3121 covers more than one route in the data window — the stats below are for SAN → DFW, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
78%
Median delay
-4 min
90th percentile
+115 min
Cancellation rate
4%

How often is AA3121 on time?

Across 24 flights on SAN → DFW from 2026-02-12 to 2026-03-07, AA3121 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +115 min or later. 4% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time1878%
16-30 min00%
31-60 min00%
61-120 min29%
2+ hrs313%

Performance by month

MonthFlightsOn-timeAvg delay
2026-021771%+31 min
2026-036100%-12 min

Performance by day of week

DayFlightsOn-time
Mon3100%
Tue3100%
Wed367%
Thu475%
Fri450%
Sat367%
Sun3100%

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…