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

Connect in the morning. The same 90-minute layover misses 1 time in 10 at 11 am and 27% of the time at 3 pm.

Best connections, one ticket

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


United Details →	EWR 06:30 → DEN 08:45UA 670	2h 40m Denver	DEN 11:25 → ONT 12:47UA 430	9h 17m	99%	88%
United Details →	EWR 14:45 → SFO 17:48UA 2328	3h 12m San Francisco	SFO 21:00 → ONT 22:37UA 552	10h 52m	94%	77%
United Details →	EWR 14:12 → IAH 17:10UA 2690	3h 21m Houston	IAH 20:31 → ONT 21:55UA 1563	10h 43m	97%	76%
Delta Details →	EWR 17:59 → SLC 21:18DL 2033	1h 41m Salt Lake City	SLC 22:59 → ONT 23:48DL 1614	8h 49m	90%	75%
Delta Details →	EWR 07:15 → SLC 10:13DL 1009	1h 06m Salt Lake City	SLC 11:19 → ONT 12:10DL 3172	7h 55m	84%	75%
United Details →	EWR 06:00 → SFO 09:09UA 2115	1h 31m San Francisco	SFO 10:40 → ONT 12:12UA 2661	9h 12m	95%	72%
United Details →	EWR 13:30 → DEN 15:53UA 577	3h 27m Denver	DEN 19:20 → ONT 20:42UA 2028	10h 12m	96%	70%
American Details →	EWR 05:51 → DFW 08:40AA 2728	2h 00m Dallas-Fort Worth	DFW 10:40 → ONT 11:45AA 2242	8h 54m	98%	70%
Tight connection: often missed
United Details →	EWR 11:50 → SFO 15:01UA 1343	1h 16m San Francisco	SFO 16:17 → ONT 17:54UA 5613 · flown by SkyWest	9h 04m	73%	46%
United Details →	EWR 15:41 → DEN 18:23UA 663	57m Denver	DEN 19:20 → ONT 20:42UA 2028	8h 01m	61%	43%
American Details →	EWR 17:10 → DFW 20:10AA 1810	1h 17m Dallas-Fort Worth	DFW 21:27 → ONT 22:32AA 711	8h 22m	55%	25%

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

PHX · 1h 17m · leaves 07:15 11%

SLC · 1h 06m · leaves 07:15 16%

ATL · 51m · leaves 06:00 25%

Afternoon and evening

PDX · 1h 13m · leaves 17:05 19%

SFO · 1h 16m · leaves 11:50 27%

DFW · 1h 17m · leaves 17:10 45%

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 299 EWR 07:25 → SEA Delta DL 4031 SEA 14:35 → ONT Connection details →	4h 00m	12h 54m	99%	86%
United UA 1139 EWR 06:30 → LAS Southwest WN 2298 LAS 11:30 → ONT Connection details →	2h 36m	9h 02m	98%	81%
United UA 1631 EWR 09:00 → LAS Frontier F9 1357 LAS 13:59 → ONT Connection details →	2h 31m	9h 09m	96%	78%

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