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 ONT → JFK (5h 22m), on time 7 times in 10. Delta via Atlanta (9h 00m) is more reliable, 87%, but takes 3h 38m longer.

Nonstops (seasonal or thin)


JetBlue	ONT	JFK	5h 22m	72%	1.8%	165	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	ONT 22:00 → ATL 05:18DL 2892	2h 26m Atlanta	ATL 07:44 → JFK 10:00 +1DL 2420	9h 00m	100%	87%
Delta Details →	ONT 17:21 → SLC 20:17DL 4443 · flown by SkyWest	3h 42m Salt Lake City	SLC 23:59 → JFK 06:23 +1DL 705	10h 02m	96%	84%
Alaska Details →	ONT 07:00 → PDX 09:15AS 345	1h 32m Portland	PDX 10:47 → JFK 19:23AS 18	9h 23m	100%	82%
American Details →	ONT 22:10 → CLT 05:48AA 2237	2h 23m Charlotte	CLT 08:11 → JFK 10:12 +1AA 1029	9h 02m	99%	80%
Delta Details →	ONT 06:00 → SLC 08:50DL 2708	1h 09m Salt Lake City	SLC 09:59 → JFK 16:49DL 1792	7h 49m	97%	80%
Delta Details →	ONT 17:59 → SEA 20:50DL 4031 · flown by SkyWest	1h 30m Seattle	SEA 22:20 → JFK 06:34 +1DL 452	9h 35m	95%	79%
American Details →	ONT 06:11 → PHX 07:30AA 1194	1h 47m Phoenix	PHX 09:17 → JFK 17:29AA 2689	8h 19m	95%	79%
Alaska Details →	ONT 17:26 → SEA 20:06AS 575	3h 09m Seattle	SEA 23:15 → JFK 07:38 +1AS 22	11h 12m	100%	78%
Tight connection: often missed
American Details →	ONT 19:15 → PHX 20:36AA 2639	1h 14m Phoenix	PHX 21:50 → JFK 05:47 +1AA 1587	7h 32m	68%	59%

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

SLC · 1h 09m · leaves 06:00 3%

DFW · 1h 05m · leaves 05:34 10%

Afternoon and evening

ATL · 1h 19m · leaves 11:50 9%

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.


Alaska AS 2456 ONT 17:32 → PDX Delta DL 2139 PDX 22:35 → JFK Connection details →	2h 46m	10h 23m	98%	88%
Southwest WN 3159 ONT 17:15 → PHX Delta DL 548 PHX 22:35 → JFK Connection details →	4h 00m	10h 12m	97%	85%
Southwest WN 3150 ONT 05:30 → LAS Delta DL 333 LAS 09:35 → JFK Connection details →	3h 00m	9h 27m	100%	84%

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