Delta Air Lines JFK to BOS on-time performance
Delta Air Lines nonstop flights from New York to Boston · Aug 2025 – Jul 2026
On-time arrivals
70%
arrived < 15 min late
Cancelled
3.3%
12 flights
Avg arrival delay
29 min
93 min when late
Rank on route
#2 of 3
route average 73% on time
Key facts
- Delta Air Lines flights on JFK to BOS arrived on time 70% of the time in Aug 2025 – Jul 2026.
- 3.3% were cancelled, and 17% arrived an hour or more late.
- That ranks #2 of 3 airlines on this route, which averaged 73% on time overall.
- The largest source of delay minutes was late-arriving aircraft (39%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft39%
- Airline (crew, maintenance, cleaning, fueling)37%
- Air traffic control & airport congestion22%
- Extreme weather1%
- Security0%
Other airlines on JFK to BOS
- Republic Airways77% on time · 18 min avg delay
- JetBlue69% on time · 25 min avg delay
Full JFK to BOS comparison →
Delta Air Lines on-time record across all routes →
368 Delta Air Lines flights tracked on this route; 12 cancelled, 0 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.