AS737
AS737 (Alaska Airlines) is a multi-stop service on 8 routes, busiest Seattle to Dulles. Of 492 departures recorded from October 2024 to July 2026, 81.5% left on time, according to the US BTS.
- On-time departures81.5%of 492 flights
- Average delay9.5 min
- July 202661▲ 96.8%vs July 2025
- Cancelled1.0%
- Legs flown under this number8
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods13 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 25 | – |
| February | – | 28 | – |
| March | – | 45 | – |
| April | – | 58 | – |
| May | – | 58 | – |
| June | 19 | 60 | ▲ 215.8% |
| July | 31 | 61 | ▲ 96.8% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 25 | – | in progress |
| November | – | – | – |
| December | 1 | – | – |
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 periods13 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 87.5% | – |
| February | – | 92.9% | – |
| March | – | 66.7% | – |
| April | – | 74.1% | – |
| May | – | 70.7% | – |
| June | 100.0% | 70.7% | ▼ 29.3% |
| July | 100.0% | 80.3% | ▼ 19.7% |
| August | 90.3% | – | – |
| September | 96.7% | – | – |
| October | 88.0% | – | in progress |
| November | – | – | – |
| December | 100.0% | – | – |
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 periods13 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 1 | – |
| February | – | 0 | – |
| March | – | 0 | – |
| April | – | 0 | – |
| May | – | 0 | – |
| June | 0 | 2 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | – | – | – |
| 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 99.0% 487
- Cancelled 1.0% 5
Share of all recorded flights in the period, all legs. · Oct 14, 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 |
|---|---|---|---|---|
| SEA IAD Seattle–Tacoma International Airport – Washington Dulles International Airport | 3,702 | 8.2 min | 81.0% | 206 |
| IAD SEA Washington Dulles International Airport – Seattle–Tacoma International Airport | 3,702 | 20.2 min | 66.9% | 129 |
| BOI SEA Boise Air Terminal/Gowen Field – Seattle–Tacoma International Airport | 641 | 3.7 min | 98.5% | 69 |
| SAN ATL San Diego International Airport – Hartsfield Jackson Atlanta International Airport | 3,038 | 1.6 min | 91.0% | 67 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 3 | 3 | 100.0% | 0 |
| November 2024 | 9 | 8 | 100.0% | 1 |
| December 2024 | 8 | 8 | 75.0% | 0 |
| June 2025 | 19 | 19 | 100.0% | 0 |
| July 2025 | 31 | 30 | 100.0% | 1 |
| August 2025 | 31 | 31 | 90.3% | 0 |
| September 2025 | 30 | 30 | 96.7% | 0 |
| October 2025 | 25 | 25 | 88.0% | 0 |
| December 2025 | 1 | 1 | 100.0% | 0 |
| January 2026 | 25 | 24 | 87.5% | 1 |
| February 2026 | 28 | 28 | 92.9% | 0 |
| March 2026 | 45 | 45 | 66.7% | 0 |
| April 2026 | 58 | 58 | 74.1% | 0 |
| May 2026 | 58 | 58 | 70.7% | 0 |
| June 2026 | 60 | 58 | 70.7% | 2 |
| July 2026 | 61 | 61 | 80.3% | 0 |