ONT to JFK flight delays
Ontario, CA (ONT) New York, NY (JFK) · 2,429 miles
30 flights · March 2025 – August 2026 · US Bureau of Transportation Statistics
This route flew fewer than 50 times in the period, which is too few for an on-time rate to mean anything. The figures below are shown as recorded, but the route is not graded.
68.97%
Arrived on time
Within 15 minutes of schedule
3.33%
Cancelled
Share of scheduled flights
288 min
When late, late by
Average across delayed arrivals
90 min
Delay per flight
Averaged over every flight flown
What the record says about this route
Cancellation, not delay, is the risk worth pricing here: 3.33% of scheduled flights never operated. A late flight still gets you there. A cancelled one leaves you rebooking, and on a route with few daily departures that can mean losing a day.
The two directions do not behave alike. JFK to ONT arrives on time 10.4 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
Flights from Ontario to New York run late more often than the average route, though not severely.
Every airline on ONT to JFK
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| JetBlue Airways | 30 | 68.97% | 3.33% | 288 min | — |
The return leg
JFK to ONT New York back to Ontario 58.62% on time —Other routes from Ontario
Common questions
Are flights from Ontario to New York usually delayed?
68.97% of flights on the ONT to JFK route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is worse than the average route in this record.
How often are ONT to JFK flights cancelled?
3.33% of scheduled flights did not operate — about 33 in every thousand. That is high enough that cancellation, not delay, is the risk worth planning around.
When ONT to JFK flights are late, how late are they?
About 288 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on ONT to JFK during March 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →