DL2055
DL2055 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Seattle to Chicago. Of 871 departures recorded from October 2024 to July 2026, 84.9% left on time, according to the US BTS.
- On-time departures84.9%of 871 flights
- Average delay6.3 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.2%
- 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 | 58 | 52 | ▼ 10.3% |
| February | 50 | 45 | ▼ 10.0% |
| March | 60 | 12 | ▼ 80.0% |
| April | 58 | 18 | ▼ 69.0% |
| May | 52 | 31 | ▼ 40.4% |
| June | 35 | 30 | ▼ 14.3% |
| July | 31 | 31 | 0.0% |
| August | 27 | – | – |
| September | 26 | – | – |
| October | 27 | – | in progress |
| November | 25 | – | – |
| December | 41 | – | – |
| Year to date (Jan–Jul) | 344 | 219 | ▼ 36.3% |
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 | 69.0% | 73.1% | ▲ 6.0% |
| February | 64.0% | 93.3% | ▲ 45.8% |
| March | 91.7% | 91.7% | 0.0% |
| April | 82.8% | 88.9% | ▲ 7.4% |
| May | 84.6% | 93.6% | ▲ 10.6% |
| June | 97.1% | 93.3% | ▼ 3.9% |
| July | 96.8% | 93.6% | ▼ 3.3% |
| August | 92.6% | – | – |
| September | 96.2% | – | – |
| October | 85.2% | – | in progress |
| November | 68.0% | – | – |
| December | 56.4% | – | – |
| Year-to-date average (Jan–Jul) | 83.7% | 89.6% | ▲ 7.1% |
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 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 0 | 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 99.8% 869
- Cancelled 0.2% 2
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 |
|---|---|---|---|---|
| SEA ORD Seattle–Tacoma International Airport – Chicago O'Hare International Airport | 2,762 | 2.8 min | 88.4% | 585 |
| ORD SEA Chicago O'Hare International Airport – Seattle–Tacoma International Airport | 2,762 | 13.3 min | 77.9% | 286 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 95.0% | 0 |
| November 2024 | 60 | 60 | 91.7% | 0 |
| December 2024 | 62 | 62 | 91.9% | 0 |
| January 2025 | 58 | 58 | 69.0% | 0 |
| February 2025 | 50 | 50 | 64.0% | 0 |
| March 2025 | 60 | 60 | 91.7% | 0 |
| April 2025 | 58 | 58 | 82.8% | 0 |
| May 2025 | 52 | 52 | 84.6% | 0 |
| June 2025 | 35 | 35 | 97.1% | 0 |
| July 2025 | 31 | 31 | 96.8% | 0 |
| August 2025 | 27 | 27 | 92.6% | 0 |
| September 2025 | 26 | 26 | 96.2% | 0 |
| October 2025 | 27 | 27 | 85.2% | 0 |
| November 2025 | 25 | 25 | 68.0% | 0 |
| December 2025 | 41 | 39 | 56.4% | 2 |
| January 2026 | 52 | 52 | 73.1% | 0 |
| February 2026 | 45 | 45 | 93.3% | 0 |
| March 2026 | 12 | 12 | 91.7% | 0 |
| April 2026 | 18 | 18 | 88.9% | 0 |
| May 2026 | 31 | 31 | 93.6% | 0 |
| June 2026 | 30 | 30 | 93.3% | 0 |
| July 2026 | 31 | 31 | 93.6% | 0 |