ON TIMEBOARD

DL 4311 on time

Delta Air Lines 4311: Elko to Salt Lake City at 6:30 a.m. (past 12 months)

On time
96%
365 flights · likely 93–97%
Cancelled
0.8%
of scheduled flights
Typical arrival
−23 min
median vs schedule
When late
+191 min
average delay
Similar flights
96%
DL, same route & hour

About 1 in 23 DL 4311 flights from Elko arrived 15+ minutes late, diverted or cancelled over the past year (4%); 0.8% were cancelled. The typical flight landed 23 minutes early.

DL 4311: EKO → SLC

Scheduled to leave Elko at 6:30 a.m. local time, operated by SkyWest as OO 4311. Over the past year it arrived on time 96% of the time (365 flights), in line with other DL flights on the route at that hour (96%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 100% on time (30 flights)100SepOct 2025: 100% on time (31 flights)100OctNov 2025: 97% on time (30 flights)97NovDec 2025: 100% on time (31 flights)100DecJan 2026: 90% on time (31 flights)90JanFeb 2026: 93% on time (28 flights)93FebMar 2026: 100% on time (31 flights)100MarApr 2026: 87% on time (30 flights)87AprMay 2026: 94% on time (31 flights)94MayJun 2026: 93% on time (30 flights)93JunJul 2026: 97% on time (31 flights)97JulAug 2026: 97% on time (31 flights)97Aug

By day of week

DayFlightsOn time
Monday5398%
Tuesday5290%
Wednesday5298%
Thursday5298%
Friday5296%
Saturday5290%
Sunday5298%

Why it was late

Airline (crew, maintenance, ops) 88%Severe weather 11%Air traffic & airport (NAS) 1%

All flights EKO → SLC · Connecting off DL 4311? Check the risk

Questions

How often is DL 4311 from EKO to SLC late?

Delta Air Lines 4311 from Elko, NV to Salt Lake City, UT arrived 15 or more minutes late, was diverted or was cancelled on 4% of 365 scheduled flights between September 2025 and August 2026. 0.8% 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.