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Delta Air Lines / SAT → ATL

DL 2009 on time

Delta Air Lines 2009: San Antonio to Atlanta at 4:29 p.m.; Atlanta to San Antonio at 1:45 p.m. (past 12 months). Figures below the title are for SAT → ATL, its busiest leg

On time
76%
230 flights · likely 70–81%
Cancelled
1.3%
of scheduled flights
Typical arrival
−4 min
median vs schedule
When late
+57 min
average delay
Similar flights
73%
DL, same route & hour

About 1 in 4 DL 2009 flights from San Antonio arrived 15+ minutes late, diverted or cancelled over the past year (24%); 1.3% were cancelled. The typical flight landed 4 minutes early.

DL 2009: SAT → ATL

Scheduled to leave San Antonio at 4:29 p.m. local time. Over the past year it arrived on time 76% of the time (230 flights), better than other DL flights on the route at that hour (73%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Apr 2025: 58% on time (24 flights)58AprMay 2025: 63% on time (30 flights)63MayJun 2025: too few flights (7 flights)JunDec 2025: too few flights (12 flights)DecJan 2026: 83% on time (29 flights)83JanFeb 2026: 82% on time (22 flights)82FebMar 2026: 70% on time (20 flights)70MarApr 2026: 76% on time (25 flights)76AprMay 2026: 67% on time (30 flights)67MayJun 2026: 77% on time (30 flights)77JunJul 2026: 68% on time (31 flights)68JulAug 2026: 84% on time (31 flights)84Aug

By day of week

DayFlightsOn time
Monday3770%
Tuesday3187%
Wednesday3187%
Thursday3678%
Friday3664%
Saturday2588%
Sunday3465%

Why it was late

Late inbound plane 47%Airline (crew, maintenance, ops) 30%Air traffic & airport (NAS) 23%

All flights SAT → ATL · Connecting off DL 2009? Check the risk

DL 2009: ATL → SAT

Scheduled to leave Atlanta at 1:45 p.m. local time. Over the past year it arrived on time 79% of the time (223 flights), in line with other DL flights on the route at that hour (80%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Apr 2025: 67% on time (30 flights)67AprMay 2025: 68% on time (31 flights)68MayJun 2025: too few flights (7 flights)JunDec 2025: too few flights (12 flights)DecJan 2026: 74% on time (31 flights)74JanFeb 2026: 93% on time (28 flights)93FebMar 2026: 81% on time (31 flights)81MarApr 2026: 80% on time (30 flights)80AprMay 2026: too few flights (5 flights)MayJun 2026: 71% on time (24 flights)71JunJul 2026: 71% on time (31 flights)71JulAug 2026: 81% on time (31 flights)81Aug

By day of week

DayFlightsOn time
Monday3376%
Tuesday3275%
Wednesday3288%
Thursday3187%
Friday3174%
Saturday3278%
Sunday3275%

Why it was late

Airline (crew, maintenance, ops) 39%Air traffic & airport (NAS) 27%Late inbound plane 26%Severe weather 8%

All flights ATL → SAT · Connecting off DL 2009? Check the risk

Questions

How often is DL 2009 from SAT to ATL late?

Delta Air Lines 2009 from San Antonio, TX to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 24% of 230 scheduled flights between September 2025 and August 2026. 1.3% were cancelled.

How often is DL 2009 from ATL to SAT late?

Delta Air Lines 2009 from Atlanta, GA to San Antonio, TX arrived 15 or more minutes late, was diverted or was cancelled on 21% of 223 scheduled flights between September 2025 and August 2026. 1.8% were cancelled.

Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Delta Air Lines for today's flight. Method.