B6851 New YorkJFK · 07:15 CancúnCUN · 10:20
B6851 by JetBlue Airways flies from New York (JFK) to Cancún (CUN).
scheduled from JFK
Where the minutes go
last 6 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival +0 min · 0 cancelled · 6 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at JFK and CUN are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other New York to Cancún flights today
same route · JetBlue AirwaysIf B6851 is cancelled, these are the other JetBlue Airways nonstop flights from New York to Cancún on the same day, with scheduled departure times in JFK local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How B6851 actually runs
Pro Flight Search has tracked every published board update for B6851 across the JFK and CUN boards: schedule changes, gate pushes and actual clocks. Usually lands on time. Based on 6 confirmed landings · 4/6 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how B6851 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as JFK and CUN published them.
Planning around B6851? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — B6851 New York to Cancún on-time performance, measured from the JFK and CUN airport boards.
https://proflightsearch.com/flight/B6851
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