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

Nonstops


Southwest	BNA	STL	1h 20m	80%	0.9%	1,286	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	BNA 05:10 → MDW 06:45WN 573	1h 05m Chicago	MDW 07:50 → STL 09:10WN 2900	4h 00m	98%	93%
Southwest Details →	BNA 05:10 → MCO 08:00WN 564	50m Orlando	MCO 08:50 → STL 10:20WN 4501	5h 10m	96%	89%
Delta Details →	BNA 09:48 → ATL 12:01DL 3069	2h 08m Atlanta	ATL 14:09 → STL 14:48DL 2700	5h 02m	97%	85%
Delta Details →	BNA 05:10 → ATL 07:20DL 2637	1h 44m Atlanta	ATL 09:04 → STL 09:43DL 1400	4h 36m	97%	80%
American Details →	BNA 09:04 → ORD 11:00AA 3973 · flown by Envoy	1h 32m Chicago	ORD 12:32 → STL 13:55AA 3815 · flown by Envoy	4h 51m	93%	79%
Delta Details →	BNA 07:30 → ATL 09:44DL 2802	2h 08m Atlanta	ATL 11:52 → STL 12:34DL 566	5h 00m	97%	78%
Southwest Details →	BNA 09:00 → PNS 10:25WN 647	1h 30m Pensacola	PNS 11:55 → STL 13:45WN 4979	4h 45m	93%	78%
Southwest Details →	BNA 09:20 → MDW 11:00WN 1473	2h 00m Chicago	MDW 13:00 → STL 14:10WN 2902	4h 50m	100%	76%
Tight connection: often missed
American Details →	BNA 19:14 → CLT 21:53AA 1497	1h 02m Charlotte	CLT 22:55 → STL 23:57AA 459	4h 43m	63%	47%
United Details →	BNA 16:59 → ORD 19:00UA 1884	55m Chicago	ORD 19:55 → STL 21:26UA 2144	4h 27m	48%	28%
Southwest Details →	BNA 11:50 → SRQ 14:45WN 677	53m Sarasota/Bradenton	SRQ 15:38 → STL 17:00WN 3880	5h 10m	48%	25%

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

ATL · 1h 12m · leaves 08:33 2%

MDW · 1h 05m · leaves 05:10 2%

MCO · 50m · leaves 05:10 4%

Afternoon and evening

DAL · 1h 05m · leaves 15:25 45%

ORD · 55m · leaves 16:59 52%

BWI · 55m · leaves 18:05 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.


American AA 3439 BNA 10:42 → ORD United UA 2000 ORD 14:20 → STL Connection details →	1h 42m	5h 04m	84%	57%
Southwest WN 893 BNA 12:50 → ATL Delta DL 1393 ATL 17:13 → STL Connection details →	2h 13m	5h 07m	65%	49%
Delta DL 3142 BNA 16:31 → ATL Southwest WN 241 ATL 20:20 → STL Connection details →	1h 31m	4h 29m	60%	9%

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