ON TIMEBOARD

DL 5403 on time

Delta Air Lines 5403: Columbus to Atlanta at 6:25 a.m. (past 12 months)

On time
85%
239 flights · likely 79–89%
Cancelled
1.7%
of scheduled flights
Typical arrival
−11 min
median vs schedule
When late
+171 min
average delay
Similar flights
83%
DL, same route & hour

About 1 in 6 DL 5403 flights from Columbus arrived 15+ minutes late, diverted or cancelled over the past year (15%); 1.7% were cancelled. The typical flight landed 11 minutes early.

DL 5403: CSG → ATL

Scheduled to leave Columbus at 6:25 a.m. local time, operated by Endeavor Air as 9E 5403. Over the past year it arrived on time 85% of the time (239 flights), in line with other DL flights on the route at that hour (83%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%May 2025: 94% on time (31 flights)94MayJun 2025: 77% on time (30 flights)77JunJul 2025: 97% on time (31 flights)97JulAug 2025: too few flights (4 flights)AugJan 2026: 81% on time (27 flights)81JanFeb 2026: 82% on time (28 flights)82FebMar 2026: 77% on time (31 flights)77MarApr 2026: 97% on time (30 flights)97AprMay 2026: 94% on time (31 flights)94MayJun 2026: 87% on time (30 flights)87JunJul 2026: 71% on time (31 flights)71JulAug 2026: 87% on time (31 flights)87Aug

By day of week

DayFlightsOn time
Monday3580%
Tuesday3491%
Wednesday3491%
Thursday3488%
Friday3485%
Saturday3479%
Sunday3476%

Why it was late

Airline (crew, maintenance, ops) 54%Severe weather 23%Late inbound plane 20%Air traffic & airport (NAS) 3%

All flights CSG → ATL · Connecting off DL 5403? Check the risk

Questions

How often is DL 5403 from CSG to ATL late?

Delta Air Lines 5403 from Columbus, GA to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 15% of 239 scheduled flights between September 2025 and August 2026. 1.7% 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.