ON TIMEBOARD

DL 1384 on time

Delta Air Lines 1384: Atlanta to Buffalo at 9:00 a.m.; Buffalo to Atlanta at 12:06 p.m. (past 12 months). Figures below the title are for ATL → BUF, its busiest leg

On time
85%
365 flights · likely 81–88%
Cancelled
1.9%
of scheduled flights
Typical arrival
−5 min
median vs schedule
When late
+43 min
average delay
Similar flights
87%
DL, same route & hour

About 1 in 7 DL 1384 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (15%); 1.9% were cancelled. The typical flight landed 5 minutes early.

DL 1384: ATL → BUF

Scheduled to leave Atlanta at 9:00 a.m. local time. Over the past year it arrived on time 85% of the time (365 flights), in line with other DL flights on the route at that hour (87%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 97% on time (30 flights)97SepOct 2025: 97% on time (31 flights)97OctNov 2025: 90% on time (30 flights)90NovDec 2025: 77% on time (31 flights)77DecJan 2026: 74% on time (31 flights)74JanFeb 2026: 79% on time (28 flights)79FebMar 2026: 77% on time (31 flights)77MarApr 2026: 100% on time (30 flights)100AprMay 2026: 94% on time (31 flights)94MayJun 2026: 90% on time (30 flights)90JunJul 2026: 68% on time (31 flights)68JulAug 2026: 81% on time (31 flights)81Aug

By day of week

DayFlightsOn time
Monday5381%
Tuesday5285%
Wednesday5292%
Thursday5281%
Friday5294%
Saturday5279%
Sunday5285%

Why it was late

Airline (crew, maintenance, ops) 58%Air traffic & airport (NAS) 28%Late inbound plane 13%

All flights ATL → BUF · Connecting off DL 1384? Check the risk

DL 1384: BUF → ATL

Scheduled to leave Buffalo at 12:06 p.m. local time. Over the past year it arrived on time 81% of the time (365 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%Sep 2025: 100% on time (30 flights)100SepOct 2025: 97% on time (31 flights)97OctNov 2025: 80% on time (30 flights)80NovDec 2025: 74% on time (31 flights)74DecJan 2026: 71% on time (31 flights)71JanFeb 2026: 75% on time (28 flights)75FebMar 2026: 84% on time (31 flights)84MarApr 2026: 100% on time (30 flights)100AprMay 2026: 81% on time (31 flights)81MayJun 2026: 77% on time (30 flights)77JunJul 2026: 55% on time (31 flights)55JulAug 2026: 77% on time (31 flights)77Aug

By day of week

DayFlightsOn time
Monday5377%
Tuesday5279%
Wednesday5285%
Thursday5288%
Friday5285%
Saturday5275%
Sunday5277%

Why it was late

Late inbound plane 51%Airline (crew, maintenance, ops) 34%Air traffic & airport (NAS) 13%Severe weather 2%

All flights BUF → ATL · Connecting off DL 1384? Check the risk

Questions

How often is DL 1384 from ATL to BUF late?

Delta Air Lines 1384 from Atlanta, GA to Buffalo, NY arrived 15 or more minutes late, was diverted or was cancelled on 15% of 365 scheduled flights between September 2025 and August 2026. 1.9% were cancelled.

How often is DL 1384 from BUF to ATL late?

Delta Air Lines 1384 from Buffalo, NY to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 19% of 365 scheduled flights between September 2025 and August 2026. 2.2% 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.