ON TIMEBOARD
Delta Air Lines / ATL → SBN

DL 4097 on time

Delta Air Lines 4097: Atlanta to South Bend at 9:05 a.m.; South Bend to Atlanta at 11:42 a.m. (past 12 months). Figures below the title are for ATL → SBN, its busiest leg

On time
80%
238 flights · likely 75–85%
Cancelled
1.3%
of scheduled flights
Typical arrival
−7 min
median vs schedule
When late
+127 min
average delay
Similar flights
81%
DL, same route & hour

About 1 in 5 DL 4097 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (20%); 1.3% were cancelled. The typical flight landed 7 minutes early.

DL 4097: ATL → SBN

Scheduled to leave Atlanta at 9:05 a.m. local time, operated by SkyWest as OO 4097. Over the past year it arrived on time 80% of the time (238 flights), in line with other DL flights on the route at that hour (81%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Mar 2025: 81% on time (31 flights)81MarApr 2025: 90% on time (30 flights)90AprMay 2025: 74% on time (31 flights)74MayJun 2025: too few flights (7 flights)JunJan 2026: 50% on time (26 flights)50JanFeb 2026: 82% on time (28 flights)82FebMar 2026: 68% on time (31 flights)68MarApr 2026: 87% on time (30 flights)87AprMay 2026: 84% on time (31 flights)84MayJun 2026: 93% on time (30 flights)93JunJul 2026: 77% on time (31 flights)77JulAug 2026: 97% on time (31 flights)97Aug

By day of week

DayFlightsOn time
Monday3577%
Tuesday3465%
Wednesday3482%
Thursday3488%
Friday3497%
Saturday3474%
Sunday3379%

Why it was late

Airline (crew, maintenance, ops) 67%Severe weather 28%Air traffic & airport (NAS) 4%

All flights ATL → SBN · Connecting off DL 4097? Check the risk

DL 4097: SBN → ATL

Scheduled to leave South Bend at 11:42 a.m. local time, operated by SkyWest as OO 4097. Over the past year it arrived on time 76% of the time (238 flights), in line with other DL flights on the route at that hour (76%). Last seen in the data Aug 31, 2026.

Month by month

30%65%100%Mar 2025: 74% on time (31 flights)74MarApr 2025: 80% on time (30 flights)80AprMay 2025: 74% on time (31 flights)74MayJun 2025: too few flights (7 flights)JunJan 2026: 38% on time (26 flights)38JanFeb 2026: 79% on time (28 flights)79FebMar 2026: 71% on time (31 flights)71MarApr 2026: 83% on time (30 flights)83AprMay 2026: 81% on time (31 flights)81MayJun 2026: 90% on time (30 flights)90JunJul 2026: 65% on time (31 flights)65JulAug 2026: 94% on time (31 flights)94Aug

By day of week

DayFlightsOn time
Monday3574%
Tuesday3462%
Wednesday3474%
Thursday3488%
Friday3485%
Saturday3468%
Sunday3379%

Why it was late

Airline (crew, maintenance, ops) 60%Severe weather 32%Air traffic & airport (NAS) 8%

All flights SBN → ATL · Connecting off DL 4097? Check the risk

Questions

How often is DL 4097 from ATL to SBN late?

Delta Air Lines 4097 from Atlanta, GA to South Bend, IN arrived 15 or more minutes late, was diverted or was cancelled on 20% of 238 scheduled flights between September 2025 and August 2026. 1.3% were cancelled.

How often is DL 4097 from SBN to ATL late?

Delta Air Lines 4097 from South Bend, IN to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 24% of 238 scheduled flights between September 2025 and August 2026. 1.7% 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.