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

No clear winner: American’s CLT → ONT flights land within a few points of 78% on time whatever the hour.

Nonstops (seasonal or thin)


American	CLT	ONT	5h 14m	78%	1.2%	327	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 Charlotte). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	CLT 18:09 → SLC 20:29DL 2070	2h 30m Salt Lake City	SLC 22:59 → ONT 23:48DL 1614	8h 39m	99%	86%
American Details →	CLT 13:15 → PHX 14:35AA 2902	2h 32m Phoenix	PHX 17:07 → ONT 18:21AA 864	8h 06m	97%	81%
United Details →	CLT 08:40 → DEN 10:27UA 1963	58m Denver	DEN 11:25 → ONT 12:47UA 430	7h 07m	92%	80%
Delta Details →	CLT 05:30 → ATL 06:42DL 3186	2h 33m Atlanta	ATL 09:15 → ONT 10:40DL 665	8h 10m	99%	78%
American Details →	CLT 05:45 → DFW 07:35AA 3180	3h 05m Dallas-Fort Worth	DFW 10:40 → ONT 11:45AA 2242	9h 00m	100%	74%
American Details →	CLT 07:41 → PHX 09:05AA 1678	1h 40m Phoenix	PHX 10:45 → ONT 12:02AA 2244	7h 21m	97%	71%
United Details →	CLT 17:00 → IAH 18:58UA 4020 · flown by Mesa	1h 33m Houston	IAH 20:31 → ONT 21:55UA 1563	7h 55m	87%	69%
American Details →	CLT 16:50 → PHX 18:14AA 1779	2h 16m Phoenix	PHX 20:30 → ONT 21:44AA 1238	7h 54m	96%	67%
Tight connection: often missed
American Details →	CLT 14:32 → PHX 15:56AA 3220	1h 08m Phoenix	PHX 17:04 → ONT 18:18AA 2639	6h 46m	68%	42%
American Details →	CLT 18:00 → DFW 20:00AA 2409	1h 27m Dallas-Fort Worth	DFW 21:27 → ONT 22:32AA 711	7h 32m	71%	36%
American Details →	CLT 19:52 → DFW 21:44AA 1698	1h 11m Dallas-Fort Worth	DFW 22:55 → ONT 23:59 +1AA 1534	7h 10m	62%	23%

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

DEN · 58m · leaves 08:40 8%

DFW · 1h 04m · leaves 07:40 12%

ATL · 1h 02m · leaves 06:59 13%

Afternoon and evening

ATL · 1h 20m · leaves 14:20 14%

PHX · 1h 08m · leaves 14:32 32%

DFW · 1h 11m · leaves 19:52 38%

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.


American AA 1754 CLT 07:39 → DEN United UA 430 DEN 11:25 → ONT Connection details →	2h 15m	8h 08m	97%	86%
American AA 2529 CLT 09:20 → SEA Delta DL 4031 SEA 14:35 → ONT Connection details →	2h 28m	10h 59m	95%	83%
American AA 2030 CLT 07:07 → LAS Southwest WN 2298 LAS 11:30 → ONT Connection details →	2h 46m	8h 25m	100%	82%

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