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 90-minute layover misses 5% of the time at 8 am and 1 time in 4 at 7 pm.

Nonstops


American	CMH	ORD	1h 35m	77%	2.9%	2,360	Flying now
United	CMH	ORD	1h 39m	76%	2.7%	2,701	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


American Details →	CMH 06:00 → BOS 08:06AA 4642 · flown by Republic	2h 23m Boston	BOS 10:29 → ORD 12:30AA 3022	7h 29m	99%	89%
American Details →	CMH 06:09 → CLT 07:39AA 3206	3h 22m Charlotte	CLT 11:01 → ORD 12:19AA 2908	7h 10m	99%	87%
Delta Details →	CMH 06:30 → DTW 07:39DL 5701 · flown by Republic	2h 36m Detroit	DTW 10:15 → ORD 10:50DL 3673 · flown by SkyWest	5h 20m	98%	87%
United Details →	CMH 06:00 → IAD 07:23UA 4428 · flown by GoJet	3h 08m Dulles	IAD 10:31 → ORD 11:53UA 1252	6h 53m	95%	85%
United Details →	CMH 06:30 → IAH 08:16UA 2205	1h 19m Houston	IAH 09:35 → ORD 12:29UA 2124	6h 59m	93%	78%
American Details →	CMH 06:04 → PHL 07:40AA 2980	2h 55m Philadelphia	PHL 10:35 → ORD 12:09AA 1041	7h 05m	96%	77%
Delta Details →	CMH 08:04 → DTW 09:15DL 5812 · flown by Republic	3h 20m Detroit	DTW 12:35 → ORD 13:03DL 1716	5h 59m	100%	77%
American Details →	CMH 08:05 → PHL 09:45AA 4711 · flown by Republic	2h 57m Philadelphia	PHL 12:42 → ORD 14:15AA 2925	7h 10m	100%	75%
Tight connection: often missed
United Details →	CMH 17:00 → EWR 19:00UA 3710 · flown by Republic	1h 19m Newark	EWR 20:19 → ORD 22:06UA 546	6h 06m	75%	47%
American Details →	CMH 18:19 → MIA 21:02AA 4085 · flown by Envoy	48m Miami	MIA 21:50 → ORD 00:26 +1AA 2323	7h 07m	63%	38%
American Details →	CMH 15:44 → CLT 17:31AA 5134 · flown by PSA	55m Charlotte	CLT 18:26 → ORD 19:51AA 2488	5h 07m	69%	32%

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 00m · leaves 08:04 5%

LGA · 1h 15m · leaves 06:37 6%

IAH · 1h 19m · leaves 06:30 7%

Afternoon and evening

BOS · 55m · leaves 17:40 34%

MIA · 48m · leaves 18:19 37%

LGA · 46m · leaves 14:25 54%

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 5701 CMH 06:30 → DTW American AA 4103 DTW 10:33 → ORD Connection details →	2h 54m	5h 38m	98%	92%
Southwest WN 4376 CMH 05:45 → BWI United UA 704 BWI 10:32 → ORD Connection details →	3h 27m	7h 03m	100%	90%
Southwest WN 1207 CMH 07:12 → STL United UA 4517 STL 10:20 → ORD Connection details →	2h 42m	5h 40m	100%	89%

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