ON TIMEBOARD

DL 350 on time

Delta Air Lines 350: Atlanta to Boston at 12:40 p.m. (past 12 months)

On time
73%
339 flights · likely 68–77%
Cancelled
2.4%
of scheduled flights
Typical arrival
−3 min
median vs schedule
When late
+52 min
average delay
Similar flights
74%
DL, same route & hour

About 1 in 4 DL 350 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (27%); 2.4% were cancelled. The typical flight landed 3 minutes early.

DL 350: ATL → BOS

Scheduled to leave Atlanta at 12:40 p.m. local time. Over the past year it arrived on time 73% of the time (339 flights), in line with other DL flights on the route at that hour (74%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 67% on time (30 flights)67SepOct 2025: 55% on time (29 flights)55OctNov 2025: 80% on time (30 flights)80NovDec 2025: 84% on time (31 flights)84DecJan 2026: 76% on time (29 flights)76JanFeb 2026: 71% on time (24 flights)71FebMar 2026: 77% on time (31 flights)77MarApr 2026: 63% on time (30 flights)63AprMay 2026: 88% on time (26 flights)88MayJun 2026: 77% on time (26 flights)77JunJul 2026: 70% on time (27 flights)70JulAug 2026: 65% on time (26 flights)65Aug

By day of week

DayFlightsOn time
Monday5262%
Tuesday5273%
Wednesday5281%
Thursday5267%
Friday5277%
Saturday2983%
Sunday5072%

Why it was late

Air traffic & airport (NAS) 59%Airline (crew, maintenance, ops) 32%Late inbound plane 8%Severe weather 2%

All flights ATL → BOS · Connecting off DL 350? Check the risk

Questions

How often is DL 350 from ATL to BOS late?

Delta Air Lines 350 from Atlanta, GA to Boston, MA arrived 15 or more minutes late, was diverted or was cancelled on 27% of 339 scheduled flights between September 2025 and August 2026. 2.4% 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.