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, any airlines

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 + Alaskatwo ticketsDetails →	JFK 08:30 → PDX 11:34DL 1574	2h 56m Portland	PDX 14:30 → ONT 16:52AS 2093 · flown by Horizon	11h 22m	97%	89%
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 + Frontiertwo ticketsDetails →	JFK 07:50 → LAS 10:39AA 2002	3h 20m Las Vegas	LAS 13:59 → ONT 15:09F9 1357	10h 19m	100%	80%
Alaska + Deltatwo ticketsDetails →	JFK 13:00 → SEA 16:19AS 23	3h 31m Seattle	SEA 19:50 → ONT 22:41DL 3884 · flown by SkyWest	12h 41m	98%	80%
JetBlue + Southwesttwo ticketsDetails →	JFK 06:40 → LAS 09:11B6 411	2h 19m Las Vegas	LAS 11:30 → ONT 12:32WN 2298	8h 52m	98%	79%
American Details →	JFK 12:29 → PHX 14:43AA 2829	2h 24m Phoenix	PHX 17:07 → ONT 18:21AA 864	8h 52m	97%	78%
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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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