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Delta Air Lines / ATL → MLB

DL 3127 on time

Delta Air Lines 3127: Atlanta to Melbourne at 12:59 p.m.; Melbourne to Atlanta at 2:49 p.m. (past 12 months). Figures below the title are for ATL → MLB, its busiest leg

On time
84%
364 flights · likely 80–87%
Cancelled
0.3%
of scheduled flights
Typical arrival
−8 min
median vs schedule
When late
+51 min
average delay
Similar flights
84%
DL, same route & hour

About 1 in 6 DL 3127 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (16%); 0.3% were cancelled. The typical flight landed 8 minutes early.

DL 3127: ATL → MLB

Scheduled to leave Atlanta at 12:59 p.m. local time. Over the past year it arrived on time 84% of the time (364 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%Sep 2025: 80% on time (30 flights)80SepOct 2025: 77% on time (31 flights)77OctNov 2025: 90% on time (29 flights)90NovDec 2025: 81% on time (31 flights)81DecJan 2026: 90% on time (31 flights)90JanFeb 2026: 89% on time (28 flights)89FebMar 2026: 84% on time (31 flights)84MarApr 2026: 87% on time (30 flights)87AprMay 2026: 90% on time (31 flights)90MayJun 2026: 87% on time (30 flights)87JunJul 2026: 77% on time (31 flights)77JulAug 2026: 77% on time (31 flights)77Aug

By day of week

DayFlightsOn time
Monday5385%
Tuesday5277%
Wednesday5287%
Thursday5194%
Friday5281%
Saturday5287%
Sunday5279%

Why it was late

Airline (crew, maintenance, ops) 53%Late inbound plane 26%Air traffic & airport (NAS) 21%

All flights ATL → MLB · Connecting off DL 3127? Check the risk

DL 3127: MLB → ATL

Scheduled to leave Melbourne at 2:49 p.m. local time. Over the past year it arrived on time 79% of the time (364 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

40%70%100%Sep 2025: 80% on time (30 flights)80SepOct 2025: 77% on time (31 flights)77OctNov 2025: 86% on time (29 flights)86NovDec 2025: 84% on time (31 flights)84DecJan 2026: 81% on time (31 flights)81JanFeb 2026: 89% on time (28 flights)89FebMar 2026: 84% on time (31 flights)84MarApr 2026: 90% on time (30 flights)90AprMay 2026: 84% on time (31 flights)84MayJun 2026: 73% on time (30 flights)73JunJul 2026: 55% on time (31 flights)55JulAug 2026: 65% on time (31 flights)65Aug

By day of week

DayFlightsOn time
Monday5387%
Tuesday5277%
Wednesday5285%
Thursday5184%
Friday5275%
Saturday5283%
Sunday5262%

Why it was late

Late inbound plane 34%Airline (crew, maintenance, ops) 30%Severe weather 18%Air traffic & airport (NAS) 18%

All flights MLB → ATL · Connecting off DL 3127? Check the risk

Questions

How often is DL 3127 from ATL to MLB late?

Delta Air Lines 3127 from Atlanta, GA to Melbourne, FL arrived 15 or more minutes late, was diverted or was cancelled on 16% of 364 scheduled flights between September 2025 and August 2026. 0.3% were cancelled.

How often is DL 3127 from MLB to ATL late?

Delta Air Lines 3127 from Melbourne, FL to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 21% of 364 scheduled flights between September 2025 and August 2026. 0.5% 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.