Monday, October 12 · typical odds for a Monday (too early for a weather forecast) · issued Tue 12:00 AM ET · connections flying that day

Mon, Oct 12: Delta via Atlanta, leaving 06:00, is the safest bet: 74% chance of reaching Ontario on time; the tightest one-ticket connections make it only 53% of the time.

Nonstops that day

All 1 nonstop →


B6 355 JetBlue Flight history →	JFK 18:04	ONT 20:57	40%	17%	2.0%	62%

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Ontario on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival (Ontario is 3 h behind New York). Layovers up to 4 hours. Pick a connection for its 12-month details.


Delta Details →	JFK 06:00 → SLC 09:03DL 892	2h 23m Salt Lake City	SLC 11:26 → ONT 12:25DL 1173	9h 25m	99%	90%
Delta Details →	JFK 17:25 → SLC 20:22DL 887	2h 37m Salt Lake City	SLC 22:59 → ONT 23:48DL 1614	9h 23m	94%	79%
Delta Details →	JFK 06:00 → ATL 08:29DL 2286	52m Atlanta	ATL 09:21 → ONT 10:38DL 665	7h 38m	88%	74%
Alaska Details →	JFK 10:02 → PDX 13:09AS 19	1h 20m Portland	PDX 14:29 → ONT 17:06AS 2456 · flown by Horizon	10h 04m	89%	73%
American Details →	JFK 06:30 → DFW 09:29AA 475	2h 59m Dallas-Fort Worth	DFW 12:28 → ONT 13:45AA 2635	10h 15m	100%	72%
American Details →	JFK 07:02 → PHX 09:18AA 2369	1h 28m Phoenix	PHX 10:46 → ONT 12:18AA 2661	8h 16m	88%	69%
Delta Details →	JFK 11:00 → ATL 13:33DL 1029	3h 32m Atlanta	ATL 17:05 → ONT 18:30DL 2891	10h 30m	97%	68%
American Details →	JFK 12:29 → PHX 14:43AA 2829	2h 31m Phoenix	PHX 17:14 → ONT 18:41AA 1666	9h 12m	96%	68%
Tight connection: often missed
Delta Details →	JFK 18:29 → SLC 22:08DL 863	51m Salt Lake City	SLC 22:59 → ONT 23:48DL 1614	8h 19m	57%	48%
American Details →	JFK 18:27 → DFW 21:33AA 606	1h 14m Dallas-Fort Worth	DFW 22:47 → ONT 00:08 +1AA 1695	8h 41m	68%	40%
Alaska Details →	JFK 16:29 → SEA 20:09AS 31	53m Seattle	SEA 21:02 → ONT 23:42AS 489	10h 13m	53%	35%

How these are worked out. Each flight’s odds are our forecast for that day (typical odds until the weather forecast covers it); flights of airlines we don’t forecast yet use their 12-month record and are marked. Makes the connection: the first flight’s 12-month lateness curve, scaled so its chance of arriving 15+ min late matches the day’s forecast, at the layover minus the 45-minute minimum (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled × second flight within 15 minutes, each from the day’s forecast.

About this data: forecast odds from our model for Mon, Oct 12 (newest published update); 12-month records from US DOT on-time data, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. JSON