ON TIMEBOARD

DL 4308 on time

Delta Air Lines 4308: St. George to Salt Lake City at 11:25 a.m.; Salt Lake City to St. George at 9:30 a.m. (past 12 months). Figures below the title are for SGU → SLC, its busiest leg

On time
93%
311 flights · likely 90–96%
Cancelled
0.6%
of scheduled flights
Typical arrival
−14 min
median vs schedule
When late
+52 min
average delay
Similar flights
93%
DL, same route & hour

About 1 in 15 DL 4308 flights from St. George arrived 15+ minutes late, diverted or cancelled over the past year (7%); 0.6% were cancelled. The typical flight landed 14 minutes early.

DL 4308: SGU → SLC

Scheduled to leave St. George at 11:25 a.m. local time, operated by SkyWest as OO 4308. Over the past year it arrived on time 93% of the time (311 flights), in line with other DL flights on the route at that hour (93%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 88% on time (25 flights)88SepOct 2025: 96% on time (27 flights)96OctNov 2025: 92% on time (25 flights)92NovDec 2025: 100% on time (29 flights)100DecJan 2026: 90% on time (30 flights)90JanFeb 2026: 89% on time (28 flights)89FebMar 2026: 93% on time (27 flights)93MarApr 2026: 92% on time (26 flights)92AprMay 2026: 92% on time (25 flights)92MayJun 2026: 96% on time (26 flights)96JunJul 2026: 95% on time (21 flights)95JulAug 2026: 95% on time (22 flights)95Aug

By day of week

DayFlightsOn time
Monday5294%
Tuesday4391%
Wednesday5194%
Thursday4992%
Friday5194%
Saturday14—
Sunday5194%

Why it was late

Airline (crew, maintenance, ops) 58%Air traffic & airport (NAS) 30%Severe weather 12%

All flights SGU → SLC · Connecting off DL 4308? Check the risk

DL 4308: SLC → SGU

Scheduled to leave Salt Lake City at 9:30 a.m. local time, operated by SkyWest as OO 4308. Over the past year it arrived on time 93% of the time (311 flights), in line with other DL flights on the route at that hour (94%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 92% on time (25 flights)92SepOct 2025: 93% on time (27 flights)93OctNov 2025: 84% on time (25 flights)84NovDec 2025: 97% on time (29 flights)97DecJan 2026: 87% on time (30 flights)87JanFeb 2026: 93% on time (28 flights)93FebMar 2026: 96% on time (27 flights)96MarApr 2026: 96% on time (26 flights)96AprMay 2026: 100% on time (25 flights)100MayJun 2026: 96% on time (26 flights)96JunJul 2026: 95% on time (21 flights)95JulAug 2026: 91% on time (22 flights)91Aug

By day of week

DayFlightsOn time
Monday5292%
Tuesday4393%
Wednesday5196%
Thursday4994%
Friday5192%
Saturday14—
Sunday5192%

Why it was late

Airline (crew, maintenance, ops) 73%Severe weather 24%Air traffic & airport (NAS) 3%

All flights SLC → SGU · Connecting off DL 4308? Check the risk

Questions

How often is DL 4308 from SGU to SLC late?

Delta Air Lines 4308 from St. George, UT to Salt Lake City, UT arrived 15 or more minutes late, was diverted or was cancelled on 7% of 311 scheduled flights between September 2025 and August 2026. 0.6% were cancelled.

How often is DL 4308 from SLC to SGU late?

Delta Air Lines 4308 from Salt Lake City, UT to St. George, UT arrived 15 or more minutes late, was diverted or was cancelled on 7% of 311 scheduled flights between September 2025 and August 2026. 0.6% 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.