Alaska Airlines BOS to SAN on-time performance
Alaska Airlines nonstop flights from Boston to San Diego · Aug 2025 – Jul 2026
On-time arrivals
73%
arrived < 15 min late
Cancelled
1.2%
6 flights
Avg arrival delay
19 min
66 min when late
Rank on route
#2 of 4
route average 77% on time
Key facts
- Alaska Airlines flights on BOS to SAN arrived on time 73% of the time in Aug 2025 – Jul 2026.
- 1.2% were cancelled, and 8% arrived an hour or more late.
- That ranks #2 of 4 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (39%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)39%
- Late-arriving aircraft29%
- Air traffic control & airport congestion29%
- Extreme weather3%
- Security0%
Other airlines on BOS to SAN
- JetBlue84% on time · 11 min avg delay
- Delta Air Lines68% on time · 15 min avg delay
- Southwest Airlines43% on time · 41 min avg delay
Full BOS to SAN comparison →
Alaska Airlines on-time record across all routes →
508 Alaska Airlines flights tracked on this route; 6 cancelled, 4 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.