Delta Air Lines BOS to LAX on-time performance
Delta Air Lines nonstop flights from Boston to Los Angeles · Aug 2025 – Jul 2026
On-time arrivals
76%
arrived < 15 min late
Cancelled
1.9%
24 flights
Avg arrival delay
19 min
76 min when late
Rank on route
#2 of 4
route average 75% on time
Key facts
- Delta Air Lines flights on BOS to LAX arrived on time 76% of the time in Aug 2025 – Jul 2026.
- 1.9% were cancelled, and 9% arrived an hour or more late.
- That ranks #2 of 4 airlines on this route, which averaged 75% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (40%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)40%
- Late-arriving aircraft39%
- Air traffic control & airport congestion20%
- Extreme weather1%
- Security0%
Other airlines on BOS to LAX
- JetBlue74% on time · 20 min avg delay
- American Airlines74% on time · 26 min avg delay
- United Airlines77% on time · 17 min avg delay
Full BOS to LAX comparison →
Delta Air Lines on-time record across all routes →
1,234 Delta Air Lines flights tracked on this route; 24 cancelled, 2 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.