Flight Reliability
AS 2149 · Alaska Airlines
Los Angeles → San Francisco (LAX–SFO)97% of its flights flew this route. The rest (SMF–SAN) are included in these numbers.
- 79%
- Arrive within 15 minutes
- 8 min
- Average arrival delay
- 2.1%
- Cancelled
- 4 min early
- Median arrival delay
Based on 190 historical flights. Data through May 2026.
What the data says
The 12–3 PM departure wins.
AS 2149 departing between 12–3 PM arrived on time 88% of the time, versus 69% between 3–6 PM.
Mondays have been rough.
AS 2149 arrived on time 96% of the time on Tuesdays and just 71% on Mondays. That gap is worth planning around.
Better than the LAX–SFO route average.
AS 2149 arrived on time 79% of the time, versus 69% across the LAX–SFO route.
Trending in the right direction.
AS 2149 arrived on time 84% of the time over the last three months in the data, compared with 59% in the three months before that.
The breakdown
- Mon71%(31 flights)
- Tue96%(24 flights)
- Wed86%(21 flights)
- Thu89%(28 flights)
- Fri72%(32 flights)
- Sat74%(19 flights)
- Sun71%(28 flights)
- 12–3 PM88%(98 flights)
- 3–6 PM69%(85 flights)
Jun 94% → Mar 92% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 94% | 18 |
| July 2025 | 87% | 31 |
| August 2025 | 81% | 26 |
| September 2025 | 82% | 17 |
| November 2025 | 44% | 18 |
| December 2025 | 50% | 12 |
| January 2026 | 78% | 18 |
| February 2026 | 83% | 18 |
| March 2026 | 92% | 12 |
- Departures on time
- 77%
- Diverted
- 1.6%
- Flights flown
- 183
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 190 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.