AS138
AS138 (Alaska Airlines) is a multi-stop service on 6 routes, busiest San Francisco to Portland. Of 381 departures recorded from October 2024 to April 2026, 84.2% left on time, according to the US BTS.
- On-time departures84.2%of 381 flights
- Average delay9.5 min
- April 202617▲ 88.9%vs April 2025
- Cancelled0.3%
- Legs flown under this number6
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 16 | 31 | ▲ 93.8% |
| February | 16 | 28 | ▲ 75.0% |
| March | 12 | 31 | ▲ 158.3% |
| April | 9 | 17 | ▲ 88.9% |
| May | 31 | – | – |
| June | 30 | – | – |
| July | 31 | – | – |
| August | 31 | – | – |
| September | 16 | – | – |
| October | 23 | – | in progress |
| November | 8 | – | – |
| December | 14 | – | – |
| Year to date (Jan–Apr) | 53 | 107 | ▲ 101.9% |
according to the US BTS · October 2024 → April 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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 75.0% | 87.1% | ▲ 16.1% |
| February | 68.8% | 100.0% | ▲ 45.5% |
| March | 100.0% | 90.3% | ▼ 9.7% |
| April | 100.0% | 47.1% | ▼ 52.9% |
| May | 90.3% | – | – |
| June | 96.7% | – | – |
| July | 77.4% | – | – |
| August | 83.9% | – | – |
| September | 100.0% | – | – |
| October | 100.0% | – | in progress |
| November | 62.5% | – | – |
| December | 64.3% | – | – |
| Year-to-date average (Jan–Apr) | 85.9% | 81.1% | ▼ 5.6% |
according to the US BTS · October 2024 → April 2026
Average departure delay by month
according to the US BTS · October 2024 → April 2026
Cancelled departures by month
The most recent periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | 0 | – | – |
| July | 0 | – | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Apr) | 0 | 0 |
according to the US BTS · October 2024 → April 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 99.7% 380
- Cancelled 0.3% 1
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Apr 21, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SFO PDX San Francisco International Airport – Portland International Airport | 886 | 1.5 min | 91.9% | 111 |
| ANC ORD Ted Stevens Anchorage International Airport – Chicago O'Hare International Airport | 4,568 | 4.2 min | 86.9% | 99 |
| MSO SEA Missoula Montana Airport – Seattle–Tacoma International Airport | 624 | 15.7 min | 92.9% | 70 |
| LAS SFO Harry Reid International Airport – San Francisco International Airport | 665 | 19.6 min | 65.9% | 42 |
| LAX SFO Los Angeles International Airport – San Francisco International Airport | 543 | 9.8 min | 71.0% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 8 | 8 | 87.5% | 0 |
| November 2024 | 14 | 13 | 69.2% | 1 |
| December 2024 | 15 | 15 | 60.0% | 0 |
| January 2025 | 16 | 16 | 75.0% | 0 |
| February 2025 | 16 | 16 | 68.8% | 0 |
| March 2025 | 12 | 12 | 100.0% | 0 |
| April 2025 | 9 | 9 | 100.0% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 30 | 30 | 96.7% | 0 |
| July 2025 | 31 | 31 | 77.4% | 0 |
| August 2025 | 31 | 31 | 83.9% | 0 |
| September 2025 | 16 | 16 | 100.0% | 0 |
| October 2025 | 23 | 23 | 100.0% | 0 |
| November 2025 | 8 | 8 | 62.5% | 0 |
| December 2025 | 14 | 14 | 64.3% | 0 |
| January 2026 | 31 | 31 | 87.1% | 0 |
| February 2026 | 28 | 28 | 100.0% | 0 |
| March 2026 | 31 | 31 | 90.3% | 0 |
| April 2026 | 17 | 17 | 47.1% | 0 |