ON TIMEBOARD
Delta Air Lines / BOS → CHS

DL 2785 on time

Delta Air Lines 2785: Boston to Charleston at 12:55 p.m.; Charleston to Boston at 4:45 p.m. (past 12 months). Figures below the title are for BOS → CHS, its busiest leg

On time
73%
335 flights · likely 68–78%
Cancelled
3.3%
of scheduled flights
Typical arrival
−4 min
median vs schedule
When late
+70 min
average delay
Similar flights
71%
DL, same route & hour

About 1 in 4 DL 2785 flights from Boston arrived 15+ minutes late, diverted or cancelled over the past year (27%); 3.3% were cancelled. The typical flight landed 4 minutes early.

DL 2785: BOS → CHS

Scheduled to leave Boston at 12:55 p.m. local time. Over the past year it arrived on time 73% of the time (335 flights), in line with other DL flights on the route at that hour (71%). 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: 67% on time (30 flights)67NovDec 2025: 53% on time (19 flights)53DecJan 2026: 61% on time (23 flights)61JanFeb 2026: 65% on time (23 flights)65FebMar 2026: 73% on time (30 flights)73MarApr 2026: 96% on time (26 flights)96AprMay 2026: 87% on time (31 flights)87MayJun 2026: 80% on time (30 flights)80JunJul 2026: 71% on time (31 flights)71JulAug 2026: 61% on time (31 flights)61Aug

By day of week

DayFlightsOn time
Monday5175%
Tuesday5082%
Wednesday4881%
Thursday4971%
Friday5074%
Saturday3871%
Sunday4959%

Why it was late

Airline (crew, maintenance, ops) 41%Late inbound plane 34%Air traffic & airport (NAS) 23%Severe weather 2%

All flights BOS → CHS · Connecting off DL 2785? Check the risk

DL 2785: CHS → BOS

Scheduled to leave Charleston at 4:45 p.m. local time. Over the past year it arrived on time 61% of the time (294 flights), worse than other DL flights on the route at that hour (65%). Last seen in the data Aug 31, 2026.

Month by month

30%65%100%Aug 2025: 74% on time (31 flights)74AugSep 2025: 37% on time (30 flights)37SepOct 2025: 42% on time (31 flights)42OctNov 2025: too few flights (8 flights)NovJan 2026: 74% on time (23 flights)74JanFeb 2026: 70% on time (23 flights)70FebMar 2026: 67% on time (30 flights)67MarApr 2026: 81% on time (26 flights)81AprMay 2026: 74% on time (31 flights)74MayJun 2026: 67% on time (30 flights)67JunJul 2026: 48% on time (31 flights)48JulAug 2026: 55% on time (31 flights)55Aug

By day of week

DayFlightsOn time
Monday4558%
Tuesday4461%
Wednesday4267%
Thursday4363%
Friday4457%
Saturday3370%
Sunday4351%

Why it was late

Airline (crew, maintenance, ops) 46%Air traffic & airport (NAS) 29%Late inbound plane 24%Severe weather 2%

All flights CHS → BOS · Connecting off DL 2785? Check the risk

Questions

How often is DL 2785 from BOS to CHS late?

Delta Air Lines 2785 from Boston, MA to Charleston, SC arrived 15 or more minutes late, was diverted or was cancelled on 27% of 335 scheduled flights between September 2025 and August 2026. 3.3% were cancelled.

How often is DL 2785 from CHS to BOS late?

Delta Air Lines 2785 from Charleston, SC to Boston, MA arrived 15 or more minutes late, was diverted or was cancelled on 39% of 294 scheduled flights between September 2025 and August 2026. 4.4% 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.