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 36% of the time at 10 pm.

Nonstops


American	ORD	STL	1h 24m	71%	3.4%	2,114	Flying now
United	ORD	STL	1h 28m	70%	2.9%	3,080	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach St Louis on time. Total trip = scheduled departure to arrival, layover included. Layovers up to 4 hours. Pick a connection for the details.


United Details →	ORD 08:40 → DEN 10:31UA 526	2h 54m Denver	DEN 13:25 → STL 16:33UA 1639	7h 53m	100%	87%
United Details →	ORD 05:00 → DEN 06:42UA 2666	2h 53m Denver	DEN 09:35 → STL 12:42UA 652	7h 42m	100%	83%
Delta Details →	ORD 08:05 → ATL 11:08DL 2426	3h 01m Atlanta	ATL 14:09 → STL 14:48DL 2700	6h 45m	98%	83%
United Details →	ORD 10:25 → IAH 13:23UA 2638	2h 08m Houston	IAH 15:31 → STL 17:42UA 6160 · flown by Mesa	7h 17m	98%	82%
American Details →	ORD 05:00 → PHL 08:05AA 2970	55m Philadelphia	PHL 09:00 → STL 10:36AA 2720	5h 35m	90%	81%
Delta Details →	ORD 05:30 → ATL 08:33DL 1264	3h 19m Atlanta	ATL 11:52 → STL 12:34DL 566	7h 00m	99%	79%
American Details →	ORD 05:07 → CLT 08:10AA 2842	2h 50m Charlotte	CLT 11:00 → STL 11:59AA 2717	6h 51m	97%	79%
American Details →	ORD 06:59 → LGA 10:15AA 2723	2h 43m New York	LGA 12:58 → STL 14:50AA 4509 · flown by Republic	7h 51m	97%	76%
Tight connection: often missed
Delta Details →	ORD 12:27 → MSP 14:10DL 1567	1h 05m Minneapolis	MSP 15:15 → STL 16:46DL 3185	4h 19m	69%	51%
American Details →	ORD 18:47 → CLT 21:59AA 689	56m Charlotte	CLT 22:55 → STL 23:57AA 459	5h 10m	64%	47%
American Details →	ORD 18:20 → DFW 21:01AA 1559	1h 09m Dallas-Fort Worth	DFW 22:10 → STL 23:58AA 3049	5h 39m	50%	24%

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

PHL · 55m · leaves 05:00 10%

LGA · 51m · leaves 06:00 13%

MSP · 49m · leaves 06:30 17%

Afternoon and evening

CLT · 56m · leaves 18:47 36%

LGA · 55m · leaves 14:30 42%

DFW · 1h 09m · leaves 18:20 50%

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 2806 ORD 06:00 → DEN Southwest WN 1753 DEN 10:05 → STL Connection details →	2h 23m	7h 20m	100%	95%
United UA 425 ORD 07:12 → ATL Delta DL 2700 ATL 14:09 → STL Connection details →	3h 42m	7h 38m	100%	89%
United UA 1484 ORD 08:40 → MCI Southwest WN 2083 MCI 13:45 → STL Connection details →	3h 16m	6h 10m	99%	85%

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