Carrier route record
B6DEN→JFK
JetBlue Airways · Denver to New York
- Flights
- 545
- Period
- July 2025 to June 2026
- Share of route
- 35%
- Carriers
- 3
Historical statistics for July 2025 to June 2026, not live status. For today’s flights, check with JetBlue Airways.
JetBlue on DEN to JFK sits in the middle of the pack with a C−. About seven flights in ten arrive on time by the DOT's definition, 8 points worse than the national rate of 77.6%. The late ones land an hour and a half behind schedule. That rests on 545 flights, with a median arrival 3 minutes early.
The national on-time rate over the same period is 77.6%, so JetBlue on DEN to JFK runs 8 points behind the country as a whole. Across a thousand flights that is about 79 extra late arrivals.
Key figures
On time
69.7%
Arrivals under 15 minutes late, of 521 completed flights
Avg delay
98 min
Across delayed arrivals only, not all flights
Cancelled
3.67%
National rate is 1.81%
Whole route
81.0%
Every carrier on DEN to JFK, 1,572 flights
These figures cover 545 flights between July 2025 and June 2026. Beyond the headline rate, 11.3% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.
Carrier by carrier
JetBlue against every carrier on DEN to JFK
JetBlue flew 545 of the 1,572 flights on DEN to JFK, about 35% of it. Its 69.7% on time is 11 points worse than the route as a whole, which runs 81.0%. Ranked by on-time rate it is last of three carriers on the route, where the range runs from Delta at 87.0% to JetBlue at 69.7%. One of those carriers flew fewer than 365 flights here, so treat their positions as rough.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| Delta Air Lines | 978 | 87.0% | 80 min | 2.45% | A |
| Frontier Airlinesthin sample | 49 | 85.7% | 66 min | 0.00% | A+ |
| JetBlue Airways (this page) | 545 | 69.7% | 98 min | 3.67% | C− |
Flight by flight
JetBlue flight numbers on DEN to JFK
Departure window
When JetBlue runs best on this route
Departure time is the single lever a traveller controls, and it moves the odds more than most people expect. Each bar below is the on-time rate for flights scheduled to leave inside that window, across 545 flights.
- 5am–8am—
- 8am–11am24 flights—
- 11am–2pm228 flights71.4%
- 2pm–5pm39 flights63.2%
- 5pm–8pm—
- 8pm–5am254 flights69.0%
Scale runs 55% to 75%. Rows with fewer than 30 flights show a dash.
The best window here is not the first bank but the 11am–2pm slot at 71.4% on time, ahead of 2pm–5pm at 63.2%. Where the curve peaks mid-day rather than at dawn, the constraint is usually congestion at one end rather than the aircraft's own rotation. The 8pm–5am window is the busiest, with 254 flights scheduled in it.
Across the year
JetBlue on DEN to JFK through the year
July is the worst month at 51.9% on time, 35 points below April, the best at 86.7%. Summer afternoon convection and peak-season schedules land on the same weeks every year, so this is a pattern you can book around rather than a run of bad luck. August was the busiest month here, with 62 flights.
Across the week, Tuesday is the strongest day at 85.7% on time and Sunday the weakest at 58.9%. 27 points is a smaller lever than departure hour, but it is free.
Delay causes
Why JetBlue runs late on this route
One category carries most of the weight here. Carrier accounts for 48% of the 16,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.
- 48%Carrier
- 35%Late-arriving aircraft
- 17%National Airspace System
- 0%Extreme weather
35% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 16,000 reported delay minutes here, that single category outweighs weather by 35 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 15,501 reported delay minutes.
The largest share of delay minutes, 48%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 7,451 of the 16,000 delay minutes reported here.
Cancellations run at 3.67%, against 1.81% nationally. That is roughly one flight in 25 cancelled outright. A cancelled flight is invisible in every on-time figure on this page, so the punctuality numbers above describe only the flights that actually operated.
Connections and stage length
What a delay here costs
For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 11.3% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.
At 1,626 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The return leg runs 68.7% on time across 545 flights, within about a point of this direction. The two legs are scored separately because they usually differ; on this city pair they happen not to.
One caution: this is a thin sample. 545 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking JetBlue on DEN to JFK
Put together: the delay figures matter less here than the 3.67% cancellation rate. A late arrival costs you an hour and a half; a cancelled flight costs you the day. Book the 11am–2pm departure so there is still a schedule behind you if it goes wrong, and treat a same-day connection as optimistic. 521 completed flights over 12 months sit behind that.
Related
Where to go next
- DEN to JFK, every carrier
- JetBlue on JFK to DEN, the return leg
- Delta Air Lines on DEN to JFK87.0%
- JetBlue Airways network-wide record
- Denver International (DEN) delay statistics
- John F. Kennedy International (JFK) delay statistics
- The US routes with the most cancellations
- Why the first flight of the morning is statistically safest
Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.