Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

No clear winner: Southwest’s MDW → CMH flights land within a few points of 83% on time whatever the hour.

Nonstops


Southwest	MDW	CMH	1h 10m	83%	1.7%	1,235	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 (Columbus is 1 h ahead of Chicago). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	MDW 07:50 → STL 09:10WN 2900	55m St Louis	STL 10:05 → CMH 12:28WN 3902	3h 35m	93%	86%
Southwest Details →	MDW 07:00 → BWI 09:45WN 2742	1h 00m Baltimore	BWI 10:45 → CMH 12:10WN 4524	4h 10m	91%	84%
Southwest Details →	MDW 05:10 → MCO 08:40WN 2815	1h 20m Orlando	MCO 10:00 → CMH 12:15WN 1187	6h 05m	95%	84%
Delta Details →	MDW 06:00 → ATL 08:55DL 1285	1h 15m Atlanta	ATL 10:10 → CMH 11:48DL 1522	4h 48m	92%	79%
Southwest Details →	MDW 06:00 → DCA 08:45WN 4976	2h 55m Washington	DCA 11:40 → CMH 13:00WN 1429	6h 00m	100%	78%
Southwest Details →	MDW 07:15 → BNA 08:40WN 2959	1h 25m Nashville	BNA 10:05 → CMH 12:25WN 4427	4h 10m	85%	72%
Delta Details →	MDW 09:54 → MSP 11:35DL 5469 · flown by Endeavor	4h 00m Minneapolis	MSP 15:35 → CMH 18:28DL 2113	7h 34m	98%	72%
Delta Details →	MDW 11:05 → ATL 14:01DL 1063	3h 24m Atlanta	ATL 17:25 → CMH 19:03DL 2786	6h 58m	99%	71%
Tight connection: often missed
Southwest Details →	MDW 11:00 → ATL 13:50WN 4606	1h 30m Atlanta	ATL 15:20 → CMH 16:55WN 191	4h 55m	50%	27%
Southwest Details →	MDW 17:05 → BNA 18:35WN 2199	1h 05m Nashville	BNA 19:40 → CMH 22:00WN 850	3h 55m	65%	26%
Southwest Details →	MDW 14:55 → FLL 18:55WN 4899	50m Fort Lauderdale	FLL 19:45 → CMH 22:28WN 645	6h 32m	27%	14%

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

MCO · 1h 20m · leaves 05:10 5%

STL · 55m · leaves 07:50 7%

ATL · 1h 15m · leaves 06:00 8%

Afternoon and evening

DTW · 1h 14m · leaves 13:26 18%

FLL · 50m · leaves 14:55 73%

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 4154 MDW 08:55 → ATL Delta DL 2200 ATL 14:25 → CMH Connection details →	2h 40m	6h 05m	98%	85%
Southwest WN 1775 MDW 07:55 → DTW Delta DL 5774 DTW 12:18 → CMH Connection details →	2h 13m	4h 32m	94%	84%
Southwest WN 4122 MDW 07:40 → PHL American AA 5634 PHL 13:46 → CMH Connection details →	3h 04m	6h 51m	100%	84%

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