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Delta Air Lines / SLC → PHX

DL 1738 on time

Delta Air Lines 1738: Salt Lake City to Phoenix at 3:28 p.m.; Phoenix to Salt Lake City at 5:18 p.m. (past 12 months). Figures below the title are for SLC → PHX, its busiest leg

On time
85%
319 flights · likely 80–88%
Cancelled
0.0%
of scheduled flights
Typical arrival
−5 min
median vs schedule
When late
+66 min
average delay
Similar flights
84%
DL, same route & hour

About 1 in 7 DL 1738 flights from Salt Lake City arrived 15+ minutes late, diverted or cancelled over the past year (15%); 0.0% were cancelled. The typical flight landed 5 minutes early.

DL 1738: SLC → PHX

Scheduled to leave Salt Lake City at 3:28 p.m. local time. Over the past year it arrived on time 85% of the time (319 flights), in line with other DL flights on the route at that hour (84%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 93% on time (30 flights)93SepOct 2025: 74% on time (31 flights)74OctNov 2025: 70% on time (30 flights)70NovDec 2025: 68% on time (19 flights)68DecJan 2026: 87% on time (23 flights)87JanFeb 2026: too few flights (9 flights)FebMar 2026: 88% on time (24 flights)88MarApr 2026: 87% on time (30 flights)87AprMay 2026: 90% on time (31 flights)90MayJun 2026: 97% on time (30 flights)97JunJul 2026: 84% on time (31 flights)84JulAug 2026: 84% on time (31 flights)84Aug

By day of week

DayFlightsOn time
Monday4888%
Tuesday4791%
Wednesday4781%
Thursday4680%
Friday4678%
Saturday4083%
Sunday4591%

Why it was late

Airline (crew, maintenance, ops) 49%Late inbound plane 30%Air traffic & airport (NAS) 19%Severe weather 1%

All flights SLC → PHX · Connecting off DL 1738? Check the risk

DL 1738: PHX → SLC

Scheduled to leave Phoenix at 5:18 p.m. local time. Over the past year it arrived on time 86% of the time (258 flights), in line with other DL flights on the route at that hour (85%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 93% on time (30 flights)93SepOct 2025: 90% on time (31 flights)90OctNov 2025: too few flights (10 flights)NovDec 2025: too few flights (2 flights)DecJan 2026: 87% on time (23 flights)87JanFeb 2026: too few flights (9 flights)FebMar 2026: 88% on time (24 flights)88MarApr 2026: too few flights (12 flights)AprMay 2026: 88% on time (25 flights)88MayJun 2026: 90% on time (30 flights)90JunJul 2026: 81% on time (31 flights)81JulAug 2026: 77% on time (31 flights)77Aug

By day of week

DayFlightsOn time
Monday3882%
Tuesday3786%
Wednesday3786%
Thursday3781%
Friday3781%
Saturday3689%
Sunday3697%

Why it was late

Late inbound plane 39%Airline (crew, maintenance, ops) 38%Severe weather 13%Air traffic & airport (NAS) 10%

All flights PHX → SLC · Connecting off DL 1738? Check the risk

Questions

How often is DL 1738 from SLC to PHX late?

Delta Air Lines 1738 from Salt Lake City, UT to Phoenix, AZ arrived 15 or more minutes late, was diverted or was cancelled on 15% of 319 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.

How often is DL 1738 from PHX to SLC late?

Delta Air Lines 1738 from Phoenix, AZ to Salt Lake City, UT arrived 15 or more minutes late, was diverted or was cancelled on 14% of 258 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.