ON TIMEBOARD

DL 348 on time

Delta Air Lines 348: Atlanta to Phoenix at 8:10 a.m.; Phoenix to Atlanta at 11:55 a.m. (past 12 months). Figures below the title are for ATL → PHX, its busiest leg

On time
79%
365 flights · likely 75–83%
Cancelled
0.8%
of scheduled flights
Typical arrival
−1 min
median vs schedule
When late
+40 min
average delay
Similar flights
79%
DL, same route & hour

About 1 in 5 DL 348 flights from Atlanta arrived 15+ minutes late, diverted or cancelled over the past year (21%); 0.8% were cancelled. The typical flight landed 1 minutes early.

DL 348: ATL → PHX

Scheduled to leave Atlanta at 8:10 a.m. local time. Over the past year it arrived on time 79% of the time (365 flights), in line with other DL flights on the route at that hour (79%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 63% on time (30 flights)63SepOct 2025: 81% on time (31 flights)81OctNov 2025: 80% on time (30 flights)80NovDec 2025: 87% on time (31 flights)87DecJan 2026: 74% on time (31 flights)74JanFeb 2026: 71% on time (28 flights)71FebMar 2026: 87% on time (31 flights)87MarApr 2026: 70% on time (30 flights)70AprMay 2026: 74% on time (31 flights)74MayJun 2026: 90% on time (30 flights)90JunJul 2026: 94% on time (31 flights)94JulAug 2026: 81% on time (31 flights)81Aug

By day of week

DayFlightsOn time
Monday5379%
Tuesday5275%
Wednesday5283%
Thursday5273%
Friday5285%
Saturday5279%
Sunday5283%

Why it was late

Airline (crew, maintenance, ops) 53%Air traffic & airport (NAS) 42%Severe weather 3%Late inbound plane 3%

All flights ATL → PHX · Connecting off DL 348? Check the risk

DL 348: PHX → ATL

Scheduled to leave Phoenix at 11:55 a.m. local time. Over the past year it arrived on time 82% of the time (341 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%Sep 2025: 80% on time (30 flights)80SepOct 2025: 84% on time (31 flights)84OctNov 2025: 80% on time (30 flights)80NovDec 2025: 90% on time (31 flights)90DecJan 2026: 74% on time (31 flights)74JanFeb 2026: 89% on time (28 flights)89FebMar 2026: 74% on time (31 flights)74MarApr 2026: too few flights (12 flights)AprMay 2026: 76% on time (25 flights)76MayJun 2026: 93% on time (30 flights)93JunJul 2026: 77% on time (31 flights)77JulAug 2026: 84% on time (31 flights)84Aug

By day of week

DayFlightsOn time
Monday4986%
Tuesday4875%
Wednesday4879%
Thursday4984%
Friday4984%
Saturday4982%
Sunday4982%

Why it was late

Airline (crew, maintenance, ops) 48%Late inbound plane 36%Air traffic & airport (NAS) 15%Severe weather 1%

All flights PHX → ATL · Connecting off DL 348? Check the risk

Questions

How often is DL 348 from ATL to PHX late?

Delta Air Lines 348 from Atlanta, GA to Phoenix, AZ arrived 15 or more minutes late, was diverted or was cancelled on 21% of 365 scheduled flights between September 2025 and August 2026. 0.8% were cancelled.

How often is DL 348 from PHX to ATL late?

Delta Air Lines 348 from Phoenix, AZ to Atlanta, GA arrived 15 or more minutes late, was diverted or was cancelled on 18% of 341 scheduled flights between September 2025 and August 2026. 0.3% 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.