OnTimeRoutes
C

Delta Air Lines JFK to STT on-time performance

Delta Air Lines nonstop flights from New York to Charlotte Amalie · Aug 2025 – Jul 2026

On-time arrivals
80%
arrived < 15 min late
Cancelled
2.5%
6 flights
Avg arrival delay
13 min
61 min when late
Rank on route
#1 of 2
route average 79% on time

Key facts

  • Delta Air Lines flights on JFK to STT arrived on time 80% of the time in Aug 2025 – Jul 2026.
  • 2.5% were cancelled, and 7% arrived an hour or more late.
  • That ranks #1 of 2 airlines on this route, which averaged 79% on time overall.
  • The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (62%).

On-time trend by month

40%70%100%July 2025: 90.3% on time, 0.0% cancelledJul ’25August 2025: 57.1% on time, 0.0% cancelledAug ’25November 2025: 75.0% on time, 0.0% cancelledNov ’25December 2025: 71.4% on time, 0.0% cancelledDec ’25January 2026: 85.2% on time, 9.7% cancelledJan ’26February 2026: 69.2% on time, 7.1% cancelledFeb ’26March 2026: 76.7% on time, 3.2% cancelledMar ’26April 2026: 90.6% on time, 0.0% cancelledApr ’26May 2026: 90.3% on time, 0.0% cancelledMay ’26June 2026: 83.3% on time, 0.0% cancelledJun ’26July 2026: 71.0% on time, 0.0% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Airline (crew, maintenance, cleaning, fueling)62%
  • Air traffic control & airport congestion35%
  • Extreme weather2%
  • Late-arriving aircraft2%
  • Security0%

Other airlines on JFK to STT

239 Delta Air Lines flights tracked on this route; 6 cancelled, 1 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.