ON TIMEBOARD
Delta Air Lines / TYS → ATL

DL 1148 on time

Delta Air Lines 1148: Knoxville to Atlanta at 3:54 p.m.; Atlanta to Knoxville at 1:52 p.m. (past 12 months). Figures below the title are for TYS → ATL, its busiest leg

On time
81%
198 flights · likely 75–86%
Cancelled
2.0%
of scheduled flights
Typical arrival
−16 min
median vs schedule
When late
+63 min
average delay
Similar flights
87%
DL, same route & hour

About 1 in 5 DL 1148 flights from Knoxville arrived 15+ minutes late, diverted or cancelled over the past year (19%); 2.0% were cancelled. The typical flight landed 16 minutes early.

DL 1148: TYS → ATL

Scheduled to leave Knoxville at 3:54 p.m. local time. Over the past year it arrived on time 81% of the time (198 flights), worse than other DL flights on the route at that hour (87%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%May 2025: 81% on time (21 flights)81MayJun 2025: too few flights (6 flights)JunJan 2026: 84% on time (25 flights)84JanFeb 2026: 93% on time (28 flights)93FebMar 2026: 74% on time (31 flights)74MarApr 2026: 87% on time (30 flights)87AprMay 2026: too few flights (6 flights)MayJun 2026: 90% on time (21 flights)90JunJul 2026: 67% on time (27 flights)67JulAug 2026: 80% on time (30 flights)80Aug

By day of week

DayFlightsOn time
Monday3194%
Tuesday3087%
Wednesday3087%
Thursday2979%
Friday2972%
Saturday19—
Sunday3070%

Why it was late

Late inbound plane 67%Air traffic & airport (NAS) 29%Airline (crew, maintenance, ops) 4%

All flights TYS → ATL · Connecting off DL 1148? Check the risk

DL 1148: ATL → TYS

Scheduled to leave Atlanta at 1:52 p.m. local time. Over the past year it arrived on time 80% of the time (128 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%Feb 2026: too few flights (10 flights)FebMar 2026: 71% on time (28 flights)71MarApr 2026: too few flights (12 flights)AprJun 2026: 95% on time (21 flights)95JunJul 2026: 78% on time (27 flights)78JulAug 2026: 83% on time (30 flights)83Aug

By day of week

DayFlightsOn time
Monday2195%
Tuesday17—
Wednesday17—
Thursday2190%
Friday2171%
Saturday9—
Sunday2273%

Why it was late

Airline (crew, maintenance, ops) 52%Air traffic & airport (NAS) 23%Late inbound plane 17%Severe weather 8%

All flights ATL → TYS · Connecting off DL 1148? Check the risk

Questions

How often is DL 1148 from TYS to ATL late?

Delta Air Lines 1148 from Knoxville, TN to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 19% of 198 scheduled flights between September 2025 and August 2026. 2.0% were cancelled.

How often is DL 1148 from ATL to TYS late?

Delta Air Lines 1148 from Atlanta, GA to Knoxville, TN arrived 15 or more minutes late, was diverted or was cancelled on 20% of 128 scheduled flights between September 2025 and August 2026. 0.0% 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.