About 1 in 11 DL 1177 flights from San Diego arrived 15+ minutes late, diverted or cancelled over the past year (9%); 1.1% were cancelled. The typical flight landed 10 minutes early.
DL 1177: SAN → SLC
Scheduled to leave San Diego at 9:50 a.m. local time. Over the past year it arrived on time 91% of the time (364 flights), in line with other DL flights on the route at that hour (91%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 96% |
| Tuesday | 52 | 92% |
| Wednesday | 52 | 90% |
| Thursday | 52 | 88% |
| Friday | 52 | 90% |
| Saturday | 51 | 86% |
| Sunday | 52 | 94% |
Why it was late
All flights SAN → SLC · Connecting off DL 1177? Check the risk
DL 1177: SLC → SAN
Scheduled to leave Salt Lake City at 7:45 a.m. local time. Over the past year it arrived on time 92% of the time (364 flights), in line with other DL flights on the route at that hour (92%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 98% |
| Tuesday | 52 | 90% |
| Wednesday | 52 | 94% |
| Thursday | 52 | 87% |
| Friday | 52 | 90% |
| Saturday | 51 | 86% |
| Sunday | 52 | 96% |
Why it was late
All flights SLC → SAN · Connecting off DL 1177? Check the risk
Questions
How often is DL 1177 from SAN to SLC late?
Delta Air Lines 1177 from San Diego, CA to Salt Lake City, UT arrived 15 or more minutes late, was diverted or was cancelled on 9% of 364 scheduled flights between September 2025 and August 2026. 1.1% were cancelled.
How often is DL 1177 from SLC to SAN late?
Delta Air Lines 1177 from Salt Lake City, UT to San Diego, CA arrived 15 or more minutes late, was diverted or was cancelled on 8% of 364 scheduled flights between September 2025 and August 2026. 1.1% 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.