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 8% of the time at 11 am and 1 time in 4 at 7 pm.

Best connections, one ticket

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


Southwest Details →	ONT 23:55 → MDW 05:40WN 3153	2h 10m Chicago	MDW 07:50 → FLL 11:55 +1WN 4409	9h 00m	100%	89%
Delta Details →	ONT 22:00 → ATL 05:18DL 2892	1h 42m Atlanta	ATL 07:00 → FLL 08:52 +1DL 1334	7h 52m	100%	85%
United Details →	ONT 05:45 → IAH 11:04UA 1936	3h 16m Houston	IAH 14:20 → FLL 18:07UA 462	9h 22m	99%	82%
Southwest Details →	ONT 21:40 → BWI 05:30WN 3143	2h 55m Baltimore	BWI 08:25 → FLL 11:05 +1WN 945	10h 25m	100%	81%
United Details →	ONT 05:00 → DEN 08:20UA 2446	1h 27m Denver	DEN 09:47 → FLL 15:47UA 2188	7h 47m	97%	80%
Delta Details →	ONT 06:00 → SLC 08:50DL 2708	1h 55m Salt Lake City	SLC 10:45 → FLL 17:22DL 745	8h 24m	98%	80%
American Details →	ONT 22:10 → CLT 05:48AA 2237	1h 27m Charlotte	CLT 07:15 → FLL 09:16 +1AA 1865	8h 06m	91%	77%
Delta Details →	ONT 06:20 → SEA 09:17DL 3816 · flown by SkyWest	3h 28m Seattle	SEA 12:45 → FLL 21:40DL 338	12h 20m	100%	74%
Tight connection: often missed
Delta Details →	ONT 11:50 → ATL 19:11DL 665	47m Atlanta	ATL 19:58 → FLL 21:55DL 1489	7h 05m	74%	48%
Southwest Details →	ONT 09:45 → BNA 15:35WN 3142	1h 05m Nashville	BNA 16:40 → FLL 20:00WN 285	7h 15m	63%	24%
United Details →	ONT 18:39 → SFO 20:07UA 5624 · flown by SkyWest	1h 08m San Francisco	SFO 21:15 → FLL 05:59 +1UA 1230	8h 20m	21%	15%

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

IAH · 1h 02m · leaves 05:45 8%

PHX · 1h 00m · leaves 06:11 8%

DFW · 1h 04m · leaves 05:34 10%

Afternoon and evening

ATL · 47m · leaves 11:50 26%

BNA · 1h 05m · leaves 09:45 37%

SFO · 1h 08m · leaves 18:39 79%

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.


Delta DL 2892 ONT 22:00 → ATL JetBlue B6 1797 ATL 07:10 → FLL Connection details →	1h 52m	8h 01m	100%	82%
American AA 2237 ONT 22:10 → CLT JetBlue B6 2148 CLT 09:00 → FLL Connection details →	3h 12m	9h 56m	99%	80%
Frontier F9 2908 ONT 10:50 → DEN United UA 1374 DEN 17:45 → FLL Connection details →	3h 35m	9h 59m	98%	75%

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