DL1088
DL1088 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Salt Lake City to San Francisco. Of 1,306 departures recorded from October 2024 to July 2026, 72.3% left on time, according to the US BTS.
- On-time departures72.3%of 1,306 flights
- Average delay19.4 min
- July 202662▲ 0.0%vs July 2025
- Cancelled0.9%
- Legs flown under this number2
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 62 | 62 | 0.0% |
| February | 56 | 56 | 0.0% |
| March | 62 | 62 | 0.0% |
| April | 60 | 60 | 0.0% |
| May | 62 | 62 | 0.0% |
| June | 60 | 54 | ▼ 10.0% |
| July | 62 | 62 | 0.0% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 62 | – | in progress |
| November | 58 | – | – |
| December | 62 | – | – |
| Year to date (Jan–Jul) | 424 | 418 | ▼ 1.4% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 74.2% | 65.0% | ▼ 12.4% |
| February | 62.5% | 82.1% | ▲ 31.4% |
| March | 75.8% | 80.7% | ▲ 6.4% |
| April | 88.3% | 61.7% | ▼ 30.2% |
| May | 74.2% | 50.0% | ▼ 32.6% |
| June | 79.3% | 53.7% | ▼ 32.3% |
| July | 75.8% | 51.7% | ▼ 31.8% |
| August | 80.0% | – | – |
| September | 86.7% | – | – |
| October | 79.0% | – | in progress |
| November | 84.5% | – | – |
| December | 60.0% | – | – |
| Year-to-date average (Jan–Jul) | 75.7% | 63.5% | ▼ 16.1% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 2 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 2 | – |
| June | 2 | 0 | ▼ 100.0% |
| July | 0 | 2 | – |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 2 | 6 | ▲ 200.0% |
according to the US BTS · October 2024 → July 2026
This is a historical record of departures already flown, not a forecast for your flight.
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 99.1% 1,294
- Cancelled 0.9% 12
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SLC SFO Salt Lake City International Airport – San Francisco International Airport | 962 | 14.8 min | 74.9% | 656 |
| SFO SLC San Francisco International Airport – Salt Lake City International Airport | 962 | 24.0 min | 69.6% | 650 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 92.5% | 0 |
| November 2024 | 58 | 58 | 72.4% | 0 |
| December 2024 | 62 | 62 | 64.5% | 0 |
| January 2025 | 62 | 62 | 74.2% | 0 |
| February 2025 | 56 | 56 | 62.5% | 0 |
| March 2025 | 62 | 62 | 75.8% | 0 |
| April 2025 | 60 | 60 | 88.3% | 0 |
| May 2025 | 62 | 62 | 74.2% | 0 |
| June 2025 | 60 | 58 | 79.3% | 2 |
| July 2025 | 62 | 62 | 75.8% | 0 |
| August 2025 | 62 | 60 | 80.0% | 2 |
| September 2025 | 60 | 60 | 86.7% | 0 |
| October 2025 | 62 | 62 | 79.0% | 0 |
| November 2025 | 58 | 58 | 84.5% | 0 |
| December 2025 | 62 | 60 | 60.0% | 2 |
| January 2026 | 62 | 60 | 65.0% | 2 |
| February 2026 | 56 | 56 | 82.1% | 0 |
| March 2026 | 62 | 62 | 80.7% | 0 |
| April 2026 | 60 | 60 | 61.7% | 0 |
| May 2026 | 62 | 60 | 50.0% | 2 |
| June 2026 | 54 | 54 | 53.7% | 0 |
| July 2026 | 62 | 60 | 51.7% | 2 |