67% of JFK → DEN flights arrived on time in June-August 2026 (403 flights). The most reliable was B6 1497, on time 82% of the time on this route. Morning flights did best (82%), evening flights worst (53%). New York JFK (JFK): no delay reported. Denver (DEN): no delay reported.
Best time of day to fly JFK → DEN
| Morning (before noon) | |
| Afternoon (noon-5 PM) | |
| Evening (after 5 PM) |
Flights JFK → DEN, most reliable first
| Flight | Departs | On time on this route | Cancelled |
|---|---|---|---|
| B6 1497 JetBlue | 10:30 AM | 8.7% | |
| DL 532 Delta | 8:25 AM | 2.7% | |
| DL 457 Delta | 3:59 PM | 0% | |
| DL 424 Delta | 7:50 PM | 5.4% | |
| B6 97 JetBlue | 8:23 PM | 12.1% |
JFK conditions · DEN conditions · DEN → JFK · Cancellations
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From BTS on-time data, June-August 2026; flights with 20+ trips on this route. On-time rates cover each flight number's whole day, which can include other legs. Departure times are local.