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 one-hour layover misses 1 time in 10 at 10 am and 22% of the time at 7 pm.

Nonstops


American	PHX	ONT	1h 19m	82%	0.8%	1,417	Flying now
Southwest	PHX	ONT	1h 15m	75%	0.2%	1,610	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. Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	PHX 05:15 → OAK 07:10WN 4838	3h 40m Oakland	OAK 10:50 → ONT 12:10WN 3062	6h 55m	100%	96%
Southwest Details →	PHX 05:20 → SMF 07:15WN 3343	1h 55m Sacramento	SMF 09:10 → ONT 10:30WN 3805	5h 10m	100%	92%
Delta Details →	PHX 06:00 → SLC 08:40DL 1535	2h 39m Salt Lake City	SLC 11:19 → ONT 12:10DL 3172	6h 10m	99%	90%
United Details →	PHX 06:00 → DEN 08:52UA 337	2h 33m Denver	DEN 11:25 → ONT 12:47UA 430	6h 47m	99%	87%
Delta Details →	PHX 17:05 → SLC 19:43DL 1738	3h 16m Salt Lake City	SLC 22:59 → ONT 23:48DL 1614	6h 43m	98%	87%
Delta Details →	PHX 09:45 → SLC 12:23DL 1447	3h 22m Salt Lake City	SLC 15:45 → ONT 16:41DL 4443 · flown by SkyWest	6h 56m	100%	86%
Southwest Details →	PHX 07:30 → LAS 08:40WN 2336	2h 50m Las Vegas	LAS 11:30 → ONT 12:32WN 2298	5h 02m	100%	82%
Southwest Details →	PHX 07:45 → SJC 09:40WN 2978	1h 10m San Jose	SJC 10:50 → ONT 12:05WN 3151	4h 20m	94%	81%
Tight connection: often missed
United Details →	PHX 13:16 → SFO 15:19UA 1427	58m San Francisco	SFO 16:17 → ONT 17:54UA 5613 · flown by SkyWest	4h 38m	51%	33%
American Details →	PHX 17:15 → DFW 21:50AA 3232	1h 05m Dallas-Fort Worth	DFW 22:55 → ONT 23:59 +1AA 1534	6h 47m	59%	21%
Southwest Details →	PHX 17:10 → DEN 20:00WN 4758	1h 15m Denver	DEN 21:15 → ONT 22:35WN 1663	5h 25m	36%	12%

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

LAS · 1h 15m · leaves 06:40 0%

OAK · 1h 05m · leaves 07:45 4%

SJC · 1h 10m · leaves 07:45 6%

Afternoon and evening

SEA · 50m · leaves 15:51 22%

DFW · 1h 05m · leaves 17:15 41%

SFO · 58m · leaves 13:16 49%

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.


Southwest WN 1706 PHX 06:15 → DEN United UA 430 DEN 11:25 → ONT Connection details →	2h 25m	6h 32m	100%	88%
Frontier F9 3872 PHX 09:14 → SLC Delta DL 4443 SLC 15:45 → ONT Connection details →	3h 51m	7h 27m	100%	86%
Southwest WN 4867 PHX 17:00 → SLC Delta DL 1614 SLC 22:59 → ONT Connection details →	3h 24m	6h 48m	92%	81%

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