JFK (New York) to ONT (Ontario) flights arrive on time 69% of the time. The most reliable airline on this route is JetBlue Airways at 69%. The average delay is 70 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Source: Bureau of Transportation Statistics. Updated May 2026.JFK → ONT
JFK (New York) to ONT (Ontario)
JFK → ONT on-time performance by month
24
25
JanFebMarAprMayJunJulAugSepOctNovDec
Worse
Better
This route is delayed fairly often. About 69% of flights arrive on schedule.
Delays on this route are most often caused by the airline (crew, maintenance, or boarding).
Accurate?
Accurate?
Good to know
Departing from JFK
78% on timeExpect ~22 min sitting on the taxiway after your gate pushes back. JFK has long runway queues.
TSA is currently ~26 min. Best time: 4 AM (about 5 min).
JFK cancels 2.3% of flights — higher than average. Have a backup plan.
Arriving at ONT
82% on timeWhen flights into ONT are late, the average delay is 63 minutes. Build buffer if you have ground plans.
If connecting at ONT: TSA is ~13 min right now. Allow at least 60 minutes for a domestic connection.
Flight cancelled or delayed?
Check what JetBlue Airways owes you — refund rights, action plan, complaint email. Free.
Let us watch your flight
We worry about delays, TSA, weather, and gates so you don't have to.
Know someone flying soon?
Send them the link — delay data, TSA waits, weather, all free.
Data last updated May 2026. Source: Bureau of Transportation Statistics.