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 → BNA flights land within a few points of 4 in 5 on time whatever the hour.

Nonstops


Southwest	MDW	BNA	1h 30m	81%	1.4%	1,869	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	MDW 05:10 → MCO 08:40WN 2815	2h 20m Orlando	MCO 11:00 → BNA 12:00WN 4713	6h 50m	100%	84%
Southwest Details →	MDW 05:00 → TPA 08:25WN 2906	2h 35m Tampa	TPA 11:00 → BNA 11:55WN 4003	6h 55m	100%	82%
Delta Details →	MDW 09:54 → MSP 11:35DL 5469 · flown by Endeavor	1h 20m Minneapolis	MSP 12:55 → BNA 15:00DL 2843	5h 06m	93%	82%
Southwest Details →	MDW 06:00 → DCA 08:45WN 4976	1h 50m Washington	DCA 10:35 → BNA 11:30WN 1426	5h 30m	100%	82%
Delta Details →	MDW 06:00 → ATL 08:55DL 1285	2h 26m Atlanta	ATL 11:21 → BNA 11:33DL 2867	5h 33m	95%	82%
Southwest Details →	MDW 10:20 → MCI 11:45WN 2529	1h 40m Kansas City	MCI 13:25 → BNA 15:00WN 2533	4h 40m	100%	79%
Southwest Details →	MDW 07:52 → BUF 10:25WN 758	1h 50m Buffalo	BUF 12:15 → BNA 13:10WN 668	5h 18m	100%	79%
Southwest Details →	MDW 07:45 → ALB 10:45WN 4723	2h 10m Albany	ALB 12:55 → BNA 14:15WN 155	6h 30m	100%	79%
Tight connection: often missed
Southwest Details →	MDW 17:40 → HOU 20:15WN 2785	50m Houston	HOU 21:05 → BNA 23:00WN 1958	5h 20m	44%	33%
Southwest Details →	MDW 18:25 → DAL 20:40WN 2961	58m Dallas	DAL 21:38 → BNA 23:25WN 1278	5h 01m	56%	24%

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

TPA · 1h 05m · leaves 05:00 2%

BWI · 1h 20m · leaves 08:55 2%

MSP · 1h 20m · leaves 09:54 7%

Afternoon and evening

ATL · 1h 08m · leaves 17:10 23%

HOU · 50m · leaves 17:40 56%

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 1243 MDW 07:40 → MSP Delta DL 2843 MSP 12:55 → BNA Connection details →	3h 45m	7h 20m	100%	88%
Southwest WN 1775 MDW 07:55 → DTW Delta DL 1557 DTW 12:25 → BNA Connection details →	2h 20m	5h 11m	95%	83%
Southwest WN 2038 MDW 08:05 → LGA Delta DL 2748 LGA 13:55 → BNA Connection details →	2h 35m	7h 21m	100%	79%

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