DL1503
DL1503 (Delta Air Lines) is a multi-stop service on 16 routes, busiest Salt Lake City to Spokane. Of 850 departures recorded from October 2024 to July 2026, 81.9% left on time, according to the US BTS.
- On-time departures81.9%of 850 flights
- Average delay6.4 min
- July 202660▲ 0.0%vs July 2025
- Cancelled1.2%
- Legs flown under this number16
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 38 | – |
| February | – | 36 | – |
| March | 24 | 30 | ▲ 25.0% |
| April | 17 | 28 | ▲ 64.7% |
| May | 52 | 30 | ▼ 42.3% |
| June | 60 | 60 | 0.0% |
| July | 60 | 60 | 0.0% |
| August | 47 | – | – |
| September | 41 | – | – |
| October | 56 | – | in progress |
| November | 43 | – | – |
| December | 62 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 82.4% | – |
| February | – | 83.3% | – |
| March | 95.8% | 93.3% | ▼ 2.6% |
| April | 88.2% | 85.7% | ▼ 2.9% |
| May | 80.8% | 80.0% | ▼ 1.0% |
| June | 81.7% | 76.7% | ▼ 6.1% |
| July | 76.7% | 80.0% | ▲ 4.3% |
| August | 84.4% | – | – |
| September | 82.9% | – | – |
| October | 89.3% | – | in progress |
| November | 70.7% | – | – |
| December | 78.3% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 4 | – |
| February | – | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 2 | – | – |
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 98.8% 840
- Cancelled 1.2% 10
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SLC GEG Salt Lake City International Airport – Spokane International Airport | 879 | 10.6 min | 79.8% | 325 |
| GEG SLC Spokane International Airport – Salt Lake City International Airport | 879 | 5.3 min | 81.1% | 320 |
| PNS ATL Pensacola International Airport – Hartsfield Jackson Atlanta International Airport | 437 | -5.5 min | 91.4% | 35 |
| JFK SFO John F. Kennedy International Airport – San Francisco International Airport | 4,152 | -2.7 min | 97.1% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 92.5% | 0 |
| November 2024 | 56 | 56 | 75.0% | 0 |
| December 2024 | 10 | 10 | 80.0% | 0 |
| March 2025 | 24 | 24 | 95.8% | 0 |
| April 2025 | 17 | 17 | 88.2% | 0 |
| May 2025 | 52 | 52 | 80.8% | 0 |
| June 2025 | 60 | 60 | 81.7% | 0 |
| July 2025 | 60 | 60 | 76.7% | 0 |
| August 2025 | 47 | 45 | 84.4% | 2 |
| September 2025 | 41 | 41 | 82.9% | 0 |
| October 2025 | 56 | 56 | 89.3% | 0 |
| November 2025 | 43 | 41 | 70.7% | 2 |
| December 2025 | 62 | 60 | 78.3% | 2 |
| January 2026 | 38 | 34 | 82.4% | 4 |
| February 2026 | 36 | 36 | 83.3% | 0 |
| March 2026 | 30 | 30 | 93.3% | 0 |
| April 2026 | 28 | 28 | 85.7% | 0 |
| May 2026 | 30 | 30 | 80.0% | 0 |
| June 2026 | 60 | 60 | 76.7% | 0 |
| July 2026 | 60 | 60 | 80.0% | 0 |