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 6 am and 44% of the time at 7 pm.

Nonstops


Delta	CMH	ATL	1h 44m	88%	1.6%	2,694	Flying now
Southwest	CMH	ATL	1h 35m	83%	0.9%	322	Flying now
Frontier	CMH	ATL	1h 43m	54%	2.9%	139	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	CMH 07:12 → STL 07:38WN 1207	2h 22m St Louis	STL 10:00 → ATL 12:35WN 236	5h 23m	100%	92%
Southwest Details →	CMH 05:45 → BWI 07:05WN 4376	1h 15m Baltimore	BWI 08:20 → ATL 10:20WN 3931	4h 33m	100%	92%
American Details →	CMH 06:04 → PHL 07:40AA 2980	1h 52m Philadelphia	PHL 09:32 → ATL 11:53AA 4338 · flown by Republic	5h 49m	95%	84%
United Details →	CMH 07:00 → ORD 07:39UA 3429 · flown by Republic	2h 50m Chicago	ORD 10:29 → ATL 13:44UA 2684	6h 44m	98%	84%
Delta Details →	CMH 06:30 → DTW 07:39DL 5701 · flown by Republic	2h 46m Detroit	DTW 10:25 → ATL 12:25DL 2856	5h 53m	99%	84%
American Details →	CMH 06:09 → CLT 07:39AA 3206	1h 31m Charlotte	CLT 09:10 → ATL 10:41AA 5039 · flown by PSA	4h 32m	98%	84%
Delta Details →	CMH 06:00 → BOS 08:13DL 5663 · flown by Republic	2h 07m Boston	BOS 10:20 → ATL 13:04DL 385	7h 04m	99%	83%
Delta Details →	CMH 07:00 → MSP 08:03DL 2403	2h 37m Minneapolis	MSP 10:40 → ATL 14:05DL 1046	7h 05m	98%	82%
Tight connection: often missed
United Details →	CMH 09:00 → ORD 09:36UA 466	53m Chicago	ORD 10:29 → ATL 13:44UA 2684	4h 44m	70%	57%
Delta Details →	CMH 14:00 → AUS 16:09DL 4028 · flown by SkyWest	46m Austin	AUS 16:55 → ATL 20:33DL 1397	6h 33m	63%	50%
American Details →	CMH 18:19 → MIA 21:02AA 4085 · flown by Envoy	54m Miami	MIA 21:56 → ATL 23:59AA 659	5h 40m	69%	44%

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

BWI · 1h 15m · leaves 05:45 0%

DTW · 1h 10m · leaves 08:04 4%

ORD · 1h 03m · leaves 05:30 5%

Afternoon and evening

AUS · 46m · leaves 14:00 37%

EWR · 52m · leaves 17:00 44%

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.


Southwest WN 1207 CMH 07:12 → STL Delta DL 1571 STL 09:24 → ATL Connection details →	1h 46m	4h 50m	100%	92%
Southwest WN 4477 CMH 06:50 → BNA Delta DL 3069 BNA 09:48 → ATL Connection details →	2h 38m	5h 11m	100%	90%
Southwest WN 4376 CMH 05:45 → BWI Delta DL 1592 BWI 10:33 → ATL Connection details →	3h 28m	6h 39m	100%	88%

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