OnTimeRoutes
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Delta Air Lines JFK to DEN on-time performance

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

On-time arrivals
75%
arrived < 15 min late
Cancelled
2.3%
22 flights
Avg arrival delay
18 min
68 min when late
Rank on route
#1 of 3
route average 73% on time

Key facts

  • Delta Air Lines flights on JFK to DEN arrived on time 75% of the time in Aug 2025 – Jul 2026.
  • 2.3% were cancelled, and 9% arrived an hour or more late.
  • That ranks #1 of 3 airlines on this route, which averaged 73% on time overall.
  • The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (40%).

On-time trend by month

40%70%100%July 2025: 53.6% on time, 7.6% cancelledJul ’25August 2025: 77.8% on time, 2.2% cancelledAug ’25September 2025: 86.0% on time, 0.0% cancelledSep ’25October 2025: 64.7% on time, 2.3% cancelledOct ’25November 2025: 69.5% on time, 0.0% cancelledNov ’25December 2025: 61.9% on time, 4.5% cancelledDec ’25January 2026: 78.7% on time, 4.7% cancelledJan ’26February 2026: 90.4% on time, 7.1% cancelledFeb ’26March 2026: 66.7% on time, 2.4% cancelledMar ’26April 2026: 75.0% on time, 0.0% cancelledApr ’26May 2026: 83.8% on time, 1.2% cancelledMay ’26June 2026: 77.9% on time, 0.0% cancelledJun ’26July 2026: 73.7% on time, 5.0% 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)40%
  • Air traffic control & airport congestion33%
  • Late-arriving aircraft25%
  • Extreme weather1%
  • Security0%

Other airlines on JFK to DEN

966 Delta Air Lines flights tracked on this route; 22 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.