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 8 am and barely half the time at 8 pm.

Nonstops


United	ORD	LAX	4h 35m	78%	0.6%	3,387	Flying now
Delta	ORD	LAX	4h 32m	75%	0.0%	151	Flying now
American	ORD	LAX	4h 35m	70%	2.0%	3,062	Flying now
Frontier	ORD	LAX	4h 44m	65%	4.6%	237	Flying now
Spirit	ORD	LAX	4h 30m	75%	4.3%	186	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Los Angeles on time. Total trip = scheduled departure to arrival, layover included (Los Angeles is 2 h behind Chicago). Layovers up to 4 hours. Pick a connection for the details.


American Details →	ORD 09:40 → TUL 11:44AA 4135 · flown by Envoy	3h 37m Tulsa	TUL 15:21 → LAX 16:55AA 6366 · flown by SkyWest	9h 15m	100%	97%
American Details →	ORD 08:16 → OKC 10:34AA 6204 · flown by SkyWest	3h 48m Oklahoma City	OKC 14:22 → LAX 15:39AA 6272 · flown by SkyWest	9h 23m	100%	96%
United Details →	ORD 13:30 → PHX 15:19UA 455	3h 35m Phoenix	PHX 18:54 → LAX 20:31UA 4722 · flown by SkyWest	9h 01m	99%	95%
American Details →	ORD 10:30 → OMA 12:20AA 3971 · flown by Envoy	3h 26m Omaha	OMA 15:46 → LAX 17:25AA 6278 · flown by SkyWest	8h 55m	100%	94%
United Details →	ORD 07:11 → LAS 09:19UA 574	1h 26m Las Vegas	LAS 10:45 → LAX 12:05UA 203	6h 54m	99%	92%
United Details →	ORD 05:00 → DEN 06:42UA 2666	1h 18m Denver	DEN 08:00 → LAX 09:32UA 1638	6h 32m	99%	91%
United Details →	ORD 12:40 → MCI 14:20UA 561	2h 06m Kansas City	MCI 16:26 → LAX 18:10UA 5489 · flown by SkyWest	7h 30m	95%	91%
United Details →	ORD 08:40 → DEN 10:31UA 526	2h 55m Denver	DEN 13:26 → LAX 14:57UA 774	8h 17m	100%	91%
Tight connection: often missed
American Details →	ORD 06:29 → SFO 09:19AA 2543	50m San Francisco	SFO 10:09 → LAX 11:49AA 6428 · flown by SkyWest	7h 20m	73%	42%
American Details →	ORD 15:15 → DEN 17:00AA 1734	1h 12m Denver	DEN 18:12 → LAX 19:53AA 4958 · flown by SkyWest	6h 38m	67%	35%
American Details →	ORD 11:04 → SFO 13:45AA 2550	2h 19m San Francisco	SFO 16:04 → LAX 17:45AA 6221 · flown by SkyWest	8h 41m	74%	34%

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 · 1h 18m · leaves 05:00 1%

SAN · 1h 20m · leaves 07:01 3%

IAD · 1h 18m · leaves 08:40 4%

Afternoon and evening

DCA · 51m · leaves 13:20 52%

SEA · 57m · leaves 17:42 54%

BOS · 48m · leaves 15:08 58%

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.


United UA 5614 ORD 09:03 → OKC American AA 6272 OKC 14:22 → LAX Connection details →	2h 42m	8h 36m	97%	94%
United UA 2666 ORD 05:00 → DEN Southwest WN 1569 DEN 09:35 → LAX Connection details →	2h 53m	8h 05m	100%	91%
United UA 2300 ORD 07:00 → PDX Delta DL 2766 PDX 13:25 → LAX Connection details →	3h 51m	10h 51m	100%	90%

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