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 5% of the time at 9 am and 37% of the time at 8 pm.

Nonstops


Delta	ATL	CMH	1h 35m	82%	1.5%	2,694	Flying now
Southwest	ATL	CMH	1h 32m	78%	0.6%	322	Flying now
Frontier	ATL	CMH	1h 39m	62%	2.9%	139	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	ATL 06:50 → STL 07:30WN 3937	2h 35m St Louis	STL 10:05 → CMH 12:28WN 3902	5h 35m	100%	92%
Delta Details →	ATL 17:10 → DTW 19:11DL 2067	3h 39m Detroit	DTW 22:50 → CMH 23:56DL 5634 · flown by Republic	6h 46m	98%	89%
Delta Details →	ATL 07:25 → DTW 09:20DL 1646	2h 58m Detroit	DTW 12:18 → CMH 13:27DL 5774 · flown by Republic	6h 02m	99%	88%
Southwest Details →	ATL 07:00 → BWI 08:50WN 4364	1h 55m Baltimore	BWI 10:45 → CMH 12:10WN 4524	5h 10m	97%	87%
United Details →	ATL 05:30 → IAD 07:20UA 641	1h 05m Dulles	IAD 08:25 → CMH 09:49UA 4076 · flown by Mesa	4h 19m	98%	86%
United Details →	ATL 06:07 → EWR 08:25UA 299	2h 13m Newark	EWR 10:38 → CMH 12:33UA 3638 · flown by Republic	6h 26m	98%	85%
United Details →	ATL 11:29 → ORD 12:52UA 1239	3h 42m Chicago	ORD 16:34 → CMH 19:13UA 3570 · flown by Republic	7h 44m	100%	83%
Delta Details →	ATL 07:25 → MSP 09:00DL 2668	1h 14m Minneapolis	MSP 10:14 → CMH 13:08DL 2550	5h 43m	95%	82%
Tight connection: often missed
American Details →	ATL 18:45 → CLT 20:23AA 5040 · flown by PSA	2h 06m Charlotte	CLT 22:29 → CMH 23:54AA 3226	5h 11m	71%	46%
United Details →	ATL 15:30 → ORD 16:57UA 516	48m Chicago	ORD 17:45 → CMH 20:24UA 3674 · flown by Republic	4h 54m	62%	45%
United Details →	ATL 19:04 → ORD 20:30UA 1046	1h 00m Chicago	ORD 21:30 → CMH 23:59UA 1492	4h 55m	63%	39%

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

IAD · 1h 05m · leaves 05:30 2%

MSP · 1h 14m · leaves 07:25 5%

LGA · 1h 13m · leaves 08:30 7%

Afternoon and evening

PHL · 1h 10m · leaves 18:29 33%

ORD · 48m · leaves 15:30 38%

DFW · 1h 16m · leaves 17:34 51%

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.


Southwest WN 4363 ATL 06:00 → AUS Delta DL 4028 AUS 09:20 → CMH Connection details →	2h 00m	7h 19m	100%	87%
Frontier F9 2510 ATL 05:30 → BWI Southwest WN 4524 BWI 10:45 → CMH Connection details →	3h 19m	6h 40m	94%	87%
Delta DL 987 ATL 07:10 → BOS American AA 3470 BOS 12:40 → CMH Connection details →	2h 55m	7h 46m	98%	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