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Delta Air Lines / ATL → MSY

DL 3157 on time

Delta Air Lines 3157: Atlanta to New Orleans at 1:51 p.m.; New Orleans to Atlanta at 3:41 p.m. (past 12 months). Figures below the title are for ATL → MSY, its busiest leg

On time
82%
250 flights · likely 76–86%
Cancelled
1.6%
of scheduled flights
Typical arrival
−4 min
median vs schedule
When late
+51 min
average delay
Similar flights
84%
DL, same route & hour

About 1 in 5 DL 3157 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (18%); 1.6% were cancelled. The typical flight landed 4 minutes early.

DL 3157: ATL → MSY

Scheduled to leave Atlanta at 1:51 p.m. local time. Over the past year it arrived on time 82% of the time (250 flights), in line with other DL flights on the route at that hour (84%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Apr 2025: 87% on time (30 flights)87AprMay 2025: 77% on time (31 flights)77MayJun 2025: too few flights (7 flights)JunDec 2025: too few flights (12 flights)DecJan 2026: 71% on time (31 flights)71JanFeb 2026: 89% on time (28 flights)89FebMar 2026: 77% on time (31 flights)77MarApr 2026: 87% on time (30 flights)87AprMay 2026: 74% on time (27 flights)74MayJun 2026: 86% on time (29 flights)86JunJul 2026: 81% on time (31 flights)81JulAug 2026: 90% on time (31 flights)90Aug

By day of week

DayFlightsOn time
Monday3781%
Tuesday3683%
Wednesday3689%
Thursday3686%
Friday3678%
Saturday3278%
Sunday3776%

Why it was late

Airline (crew, maintenance, ops) 49%Air traffic & airport (NAS) 24%Late inbound plane 23%Severe weather 5%

All flights ATL → MSY · Connecting off DL 3157? Check the risk

DL 3157: MSY → ATL

Scheduled to leave New Orleans at 3:41 p.m. local time. Over the past year it arrived on time 74% of the time (250 flights), worse than other DL flights on the route at that hour (78%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Apr 2025: 80% on time (30 flights)80AprMay 2025: 77% on time (31 flights)77MayJun 2025: too few flights (7 flights)JunDec 2025: too few flights (12 flights)DecJan 2026: 87% on time (31 flights)87JanFeb 2026: 86% on time (28 flights)86FebMar 2026: 71% on time (31 flights)71MarApr 2026: 87% on time (30 flights)87AprMay 2026: 48% on time (27 flights)48MayJun 2026: 83% on time (29 flights)83JunJul 2026: 55% on time (31 flights)55JulAug 2026: 77% on time (31 flights)77Aug

By day of week

DayFlightsOn time
Monday3768%
Tuesday3678%
Wednesday3681%
Thursday3681%
Friday3669%
Saturday3278%
Sunday3768%

Why it was late

Air traffic & airport (NAS) 41%Late inbound plane 39%Airline (crew, maintenance, ops) 16%Severe weather 5%

All flights MSY → ATL · Connecting off DL 3157? Check the risk

Questions

How often is DL 3157 from ATL to MSY late?

Delta Air Lines 3157 from Atlanta, GA to New Orleans, LA arrived 15 or more minutes late, was diverted or was cancelled on 18% of 250 scheduled flights between September 2025 and August 2026. 1.6% were cancelled.

How often is DL 3157 from MSY to ATL late?

Delta Air Lines 3157 from New Orleans, LA to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 26% of 250 scheduled flights between September 2025 and August 2026. 1.6% 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.