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 6 am and 30% of the time at 5 pm.

Nonstops (seasonal or thin)


Southwest	CMH	STL	1h 30m	85%	0.7%	673	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

Ranked by chance you reach St Louis on time. Total trip = scheduled departure to arrival, layover included (St Louis is 1 h behind Columbus). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	CMH 05:10 → MCO 07:20WN 1193	1h 30m Orlando	MCO 08:50 → STL 10:20WN 4501	6h 10m	100%	93%
American Details →	CMH 05:30 → ORD 06:00AA 4487 · flown by Republic	1h 05m Chicago	ORD 07:05 → STL 08:31AA 4104 · flown by Envoy	4h 02m	95%	91%
United Details →	CMH 07:00 → ORD 07:39UA 3429 · flown by Republic	3h 01m Chicago	ORD 10:40 → STL 12:11UA 1355	6h 11m	98%	87%
Delta Details →	CMH 10:02 → ATL 11:37DL 1479	2h 32m Atlanta	ATL 14:09 → STL 14:48DL 2700	5h 48m	98%	85%
Delta Details →	CMH 06:30 → DTW 07:39DL 5701 · flown by Republic	1h 11m Detroit	DTW 08:50 → STL 09:32DL 2868	4h 02m	96%	83%
American Details →	CMH 06:04 → PHL 07:40AA 2980	1h 20m Philadelphia	PHL 09:00 → STL 10:36AA 2720	5h 31m	93%	83%
Southwest Details →	CMH 05:45 → BWI 07:05WN 4376	2h 30m Baltimore	BWI 09:35 → STL 10:50WN 1110	6h 05m	100%	83%
American Details →	CMH 06:09 → CLT 07:39AA 3206	3h 21m Charlotte	CLT 11:00 → STL 11:59AA 2717	6h 49m	99%	81%
Tight connection: often missed
Delta Details →	CMH 18:37 → ATL 20:34DL 2280	59m Atlanta	ATL 21:33 → STL 22:15DL 2833	4h 41m	69%	52%
United Details →	CMH 15:30 → DEN 16:45UA 1389	49m Denver	DEN 17:34 → STL 20:43UA 1422	6h 13m	70%	50%
Delta Details →	CMH 14:43 → ATL 16:21DL 1750	52m Atlanta	ATL 17:13 → STL 17:56DL 1393	4h 14m	66%	50%

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

DTW · 1h 11m · leaves 06:30 4%

MSP · 52m · leaves 07:00 5%

ORD · 1h 05m · leaves 05:30 5%

Afternoon and evening

DEN · 49m · leaves 15:30 30%

ATL · 52m · leaves 14:43 34%

DAL · 1h 00m · leaves 15:55 37%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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