Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

The nonstop is quickest: JetBlue JFK → ONT (6h 06m), on time 3 times in 5. Delta via Salt Lake City (9h 10m) is more reliable, 88%, but takes 3h 04m longer.

Nonstops (seasonal or thin)


JetBlue	JFK	ONT	6h 06m	62%	1.8%	165	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Ontario on time. Total trip = scheduled departure to arrival, layover included (Ontario is 3 h behind New York). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	JFK 06:00 → SLC 09:03DL 892	2h 16m Salt Lake City	SLC 11:19 → ONT 12:10DL 3172	9h 10m	99%	88%
Delta Details →	JFK 16:29 → SLC 20:00DL 887	2h 59m Salt Lake City	SLC 22:59 → ONT 23:48DL 1614	10h 19m	96%	84%
Delta Details →	JFK 11:10 → SLC 14:18DL 917	1h 27m Salt Lake City	SLC 15:45 → ONT 16:41DL 4443 · flown by SkyWest	8h 31m	94%	80%
American Details →	JFK 12:29 → PHX 14:43AA 2829	2h 24m Phoenix	PHX 17:07 → ONT 18:21AA 864	8h 52m	97%	78%
Delta Details →	JFK 06:00 → ATL 08:24DL 2286	51m Atlanta	ATL 09:15 → ONT 10:40DL 665	7h 40m	86%	70%
Alaska Details →	JFK 13:00 → SEA 16:19AS 23	1h 32m Seattle	SEA 17:51 → ONT 20:32AS 592	10h 32m	92%	67%
American Details →	JFK 07:02 → PHX 09:18AA 2369	1h 27m Phoenix	PHX 10:45 → ONT 12:02AA 2244	8h 00m	92%	66%
American Details →	JFK 06:30 → DFW 09:29AA 475	1h 11m Dallas-Fort Worth	DFW 10:40 → ONT 11:45AA 2242	8h 15m	96%	65%
Tight connection: often missed
Alaska Details →	JFK 17:08 → PDX 20:33AS 19	57m Portland	PDX 21:30 → ONT 23:51AS 97	9h 43m	71%	57%
American Details →	JFK 14:42 → DFW 17:44AA 1953	1h 06m Dallas-Fort Worth	DFW 18:50 → ONT 19:59AA 2236	8h 17m	72%	42%
American Details →	JFK 17:25 → DFW 20:30AA 606	57m Dallas-Fort Worth	DFW 21:27 → ONT 22:32AA 711	8h 07m	57%	27%

Same layover, different day-part

How often the first flight arrives too late to connect (45 min minimum), for one-ticket layovers of 45–80 minutes.

Morning

DFW · 1h 09m · leaves 08:15 12%

ATL · 51m · leaves 06:00 14%

Afternoon and evening

SLC · 1h 01m · leaves 18:29 25%

PDX · 57m · leaves 17:08 29%

DFW · 57m · leaves 17:25 43%

Delays build through the day, so an afternoon first leg eats the layover. A short connection is fine early in the morning and a gamble later on.

Mixing airlines

One ticketMiss it and the airline rebooks you; bags go through. 45 min is enough.

Separate ticketsMiss it and you buy a new ticket. Re-check bags, clear security again: we require 90 min.


Delta DL 1574 JFK 08:30 → PDX Alaska AS 2093 PDX 14:30 → ONT Connection details →	2h 56m	11h 22m	97%	89%
American AA 2002 JFK 07:50 → LAS Frontier F9 1357 LAS 13:59 → ONT Connection details →	3h 20m	10h 19m	100%	80%
Alaska AS 23 JFK 13:00 → SEA Delta DL 3884 SEA 19:50 → ONT Connection details →	3h 31m	12h 41m	98%	80%

Rank all connections, any airlines →

Regional partners count as the airline that sells them: SkyWest flying Delta Connection is one Delta ticket.

How these are worked out. Makes the connection: share of the last year’s flights where the first flight arrived with at least 45 minutes to spare (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled and arriving within 15 minutes. Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON