Delta Air Lines BOS to PHX on-time performance
Delta Air Lines nonstop flights from Boston to Phoenix · Aug 2025 – Jul 2026
On-time arrivals
71%
arrived < 15 min late
Cancelled
1.6%
7 flights
Avg arrival delay
18 min
56 min when late
Rank on route
#3 of 3
route average 77% on time
Key facts
- Delta Air Lines flights on BOS to PHX arrived on time 71% of the time in Aug 2025 – Jul 2026.
- 1.6% were cancelled, and 8% arrived an hour or more late.
- That ranks #3 of 3 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was late-arriving aircraft (35%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft35%
- Air traffic control & airport congestion33%
- Airline (crew, maintenance, cleaning, fueling)27%
- Extreme weather5%
- Security0%
Other airlines on BOS to PHX
- American Airlines80% on time · 17 min avg delay
- JetBlue74% on time · 20 min avg delay
Full BOS to PHX comparison →
Delta Air Lines on-time record across all routes →
429 Delta Air Lines flights tracked on this route; 7 cancelled, 5 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.