Delta Air Lines JFK to MIA on-time performance
Delta Air Lines nonstop flights from New York to Miami · Aug 2025 – Jul 2026
On-time arrivals
76%
arrived < 15 min late
Cancelled
3.3%
53 flights
Avg arrival delay
18 min
74 min when late
Rank on route
#3 of 3
route average 77% on time
Key facts
- Delta Air Lines flights on JFK to MIA arrived on time 76% of the time in Aug 2025 – Jul 2026.
- 3.3% were cancelled, and 9% 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 airline (crew, maintenance, cleaning, fueling) (43%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)43%
- Air traffic control & airport congestion33%
- Late-arriving aircraft22%
- Extreme weather2%
- Security0%
Other airlines on JFK to MIA
- American Airlines77% on time · 26 min avg delay
- Frontier Airlines81% on time · 19 min avg delay
Full JFK to MIA comparison →
Delta Air Lines on-time record across all routes →
1,621 Delta Air Lines flights tracked on this route; 53 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.