ON TIMEBOARD

DL 3109 on time

Delta Air Lines 3109: Atlanta to Sarasota at 3:46 p.m.; Sarasota to Atlanta at 6:04 p.m. (past 12 months). Figures below the title are for ATL → SRQ, its busiest leg

On time
73%
202 flights · likely 66–78%
Cancelled
0.0%
of scheduled flights
Typical arrival
+2 min
median vs schedule
When late
+72 min
average delay
Similar flights
75%
DL, same route & hour

About 1 in 4 DL 3109 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (27%); 0.0% were cancelled. The typical flight landed 2 minutes late.

DL 3109: ATL → SRQ

Scheduled to leave Atlanta at 3:46 p.m. local time. Over the past year it arrived on time 73% of the time (202 flights), in line with other DL flights on the route at that hour (75%). Last seen in the data Aug 30, 2026.

Month by month

40%70%100%Apr 2025: 87% on time (30 flights)87AprMay 2025: 65% on time (31 flights)65MayJun 2025: too few flights (7 flights)JunDec 2025: too few flights (12 flights)DecJan 2026: 65% on time (31 flights)65JanFeb 2026: too few flights (11 flights)FebMar 2026: 79% on time (24 flights)79MarApr 2026: 87% on time (30 flights)87AprMay 2026: 73% on time (26 flights)73MayJun 2026: 78% on time (23 flights)78JunJul 2026: 63% on time (27 flights)63JulAug 2026: 50% on time (18 flights)50Aug

By day of week

DayFlightsOn time
Monday3266%
Tuesday2886%
Wednesday2879%
Thursday3171%
Friday3181%
Saturday2070%
Sunday3259%

Why it was late

Airline (crew, maintenance, ops) 36%Late inbound plane 31%Air traffic & airport (NAS) 29%Severe weather 4%

All flights ATL → SRQ · Connecting off DL 3109? Check the risk

DL 3109: SRQ → ATL

Scheduled to leave Sarasota at 6:04 p.m. local time. Over the past year it arrived on time 79% of the time (192 flights), in line with other DL flights on the route at that hour (76%). Last seen in the data Aug 31, 2026.

Usually Delta Air Lines's last flight of the day from Sarasota to Atlanta (59% of days). Delta Air Lines's last SRQ–ATL flight was cancelled 1.1% of the time, against 1.8% for its earlier ones. If it's cancelled, the next Delta Air Lines flight is usually around 6:00 a.m. the next morning.

Month by month

40%70%100%Apr 2025: 87% on time (30 flights)87AprMay 2025: 70% on time (20 flights)70MayJun 2025: too few flights (4 flights)JunDec 2025: too few flights (9 flights)DecJan 2026: 88% on time (17 flights)88JanFeb 2026: too few flights (5 flights)FebMar 2026: 83% on time (24 flights)83MarApr 2026: 83% on time (30 flights)83AprMay 2026: 85% on time (26 flights)85MayJun 2026: 91% on time (23 flights)91JunJul 2026: 48% on time (27 flights)48JulAug 2026: 77% on time (31 flights)77Aug

By day of week

DayFlightsOn time
Monday3373%
Tuesday2688%
Wednesday2492%
Thursday2979%
Friday3184%
Saturday19—
Sunday3067%

Why it was late

Late inbound plane 76%Air traffic & airport (NAS) 13%Airline (crew, maintenance, ops) 7%Severe weather 4%

All flights SRQ → ATL · Connecting off DL 3109? Check the risk

Questions

How often is DL 3109 from ATL to SRQ late?

Delta Air Lines 3109 from Atlanta, GA to Sarasota/Bradenton, FL arrived 15 or more minutes late, was diverted or was cancelled on 27% of 202 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.

How often is DL 3109 from SRQ to ATL late?

Delta Air Lines 3109 from Sarasota/Bradenton, FL to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 21% of 192 scheduled flights between September 2025 and August 2026. 0.0% 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.