DL1549
DL1549 (Delta Air Lines) is a multi-stop service on 11 routes, busiest Seattle to Anchorage. Of 806 departures recorded from October 2024 to July 2026, 82.1% left on time, according to the US BTS.
- On-time departures82.1%of 806 flights
- Average delay9.6 min
- July 202662▲ 0.0%vs July 2025
- Cancelled0.7%
- Legs flown under this number11
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 4 | 4 | 0.0% |
| February | – | 15 | – |
| March | 23 | 48 | ▲ 108.7% |
| April | 30 | 56 | ▲ 86.7% |
| May | 31 | 58 | ▲ 87.1% |
| June | 53 | 58 | ▲ 9.4% |
| July | 62 | 62 | 0.0% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 62 | – | in progress |
| November | 48 | – | – |
| December | 13 | – | – |
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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 75.0% | 75.0% | 0.0% |
| February | – | 71.4% | – |
| March | 73.9% | 68.8% | ▼ 7.0% |
| April | 89.7% | 82.1% | ▼ 8.4% |
| May | 80.7% | 75.9% | ▼ 5.9% |
| June | 92.5% | 82.8% | ▼ 10.5% |
| July | 90.3% | 80.0% | ▼ 11.4% |
| August | 88.7% | – | – |
| September | 80.0% | – | – |
| October | 81.7% | – | in progress |
| November | 93.8% | – | – |
| December | 23.1% | – | – |
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 periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | – | 1 | – |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 2 | – | in progress |
| November | 0 | – | – |
| December | 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 99.3% 800
- Cancelled 0.7% 6
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ANC SEA Ted Stevens Anchorage International Airport – Seattle–Tacoma International Airport | 2,326 | 6.0 min | 84.7% | 171 |
| SEA ANC Seattle–Tacoma International Airport – Ted Stevens Anchorage International Airport | 2,326 | 7.4 min | 88.8% | 171 |
| TLH ATL Tallahassee International Airport – Hartsfield Jackson Atlanta International Airport | 360 | 16.1 min | 75.0% | 138 |
| ATL TLH Hartsfield Jackson Atlanta International Airport – Tallahassee International Airport | 360 | 8.0 min | 81.2% | 138 |
| DTW TPA Detroit Metropolitan Wayne County Airport – Tampa International Airport | 1,585 | 15.4 min | 72.4% | 88 |
| DTW BDL Detroit Metropolitan Wayne County Airport – Bradley International Airport | 880 | 5.9 min | 93.2% | 44 |
| PDX SLC Portland International Airport – Salt Lake City International Airport | 1,012 | 2.5 min | 90.6% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 12 | 12 | 100.0% | 0 |
| November 2024 | 16 | 16 | 93.8% | 0 |
| December 2024 | 29 | 29 | 75.9% | 0 |
| January 2025 | 4 | 4 | 75.0% | 0 |
| March 2025 | 23 | 23 | 73.9% | 0 |
| April 2025 | 30 | 29 | 89.7% | 1 |
| May 2025 | 31 | 31 | 80.7% | 0 |
| June 2025 | 53 | 53 | 92.5% | 0 |
| July 2025 | 62 | 62 | 90.3% | 0 |
| August 2025 | 62 | 62 | 88.7% | 0 |
| September 2025 | 60 | 60 | 80.0% | 0 |
| October 2025 | 62 | 60 | 81.7% | 2 |
| November 2025 | 48 | 48 | 93.8% | 0 |
| December 2025 | 13 | 13 | 23.1% | 0 |
| January 2026 | 4 | 4 | 75.0% | 0 |
| February 2026 | 15 | 14 | 71.4% | 1 |
| March 2026 | 48 | 48 | 68.8% | 0 |
| April 2026 | 56 | 56 | 82.1% | 0 |
| May 2026 | 58 | 58 | 75.9% | 0 |
| June 2026 | 58 | 58 | 82.8% | 0 |
| July 2026 | 62 | 60 | 80.0% | 2 |