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 7% of the time at 9 am and 37% of the time at 9 pm.

Nonstops


United	BNA	IAH	2h 22m	83%	0.7%	1,805	Flying now
Spirit	BNA	IAH	–	0%few flights	0.0%	4	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	BNA 07:40 → ORD 09:41UA 2465	2h 59m Chicago	ORD 12:40 → IAH 15:40UA 1448	8h 00m	100%	84%
Delta Details →	BNA 06:15 → ATL 08:31DL 3001	3h 59m Atlanta	ATL 12:30 → IAH 13:38DL 1572	7h 23m	99%	83%
United Details →	BNA 06:00 → ORD 07:58UA 451	2h 27m Chicago	ORD 10:25 → IAH 13:23UA 2638	7h 23m	96%	83%
United Details →	BNA 07:00 → EWR 10:18UA 371	2h 18m Newark	EWR 12:36 → IAH 15:34UA 2204	8h 34m	100%	83%
United Details →	BNA 08:30 → IAD 11:17UA 1709	1h 33m Dulles	IAD 12:50 → IAH 15:11UA 1535	6h 41m	96%	78%
Delta Details →	BNA 05:10 → ATL 07:20DL 2637	2h 45m Atlanta	ATL 10:05 → IAH 11:18DL 1682	6h 08m	98%	78%
American Details →	BNA 09:04 → ORD 11:00AA 3973 · flown by Envoy	2h 29m Chicago	ORD 13:29 → IAH 16:27AA 4426 · flown by Republic	7h 21m	96%	77%
United Details →	BNA 09:25 → EWR 12:44UA 2461	1h 28m Newark	EWR 14:12 → IAH 17:10UA 2690	7h 45m	96%	77%
Tight connection: often missed
American Details →	BNA 07:02 → ORD 09:10AA 4964 · flown by SkyWest	50m Chicago	ORD 10:00 → IAH 12:46AA 1915	5h 44m	63%	41%
United Details →	BNA 16:59 → ORD 19:00UA 1884	1h 02m Chicago	ORD 20:02 → IAH 22:59UA 2813	6h 00m	58%	30%
American Details →	BNA 17:41 → ORD 19:55AA 1570	1h 12m Chicago	ORD 21:07 → IAH 23:51AA 3144	6h 10m	53%	26%

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

DEN · 1h 12m · leaves 07:00 7%

DFW · 1h 15m · leaves 06:01 9%

EWR · 1h 07m · leaves 08:10 12%

Afternoon and evening

MIA · 1h 20m · leaves 17:27 50%

DFW · 52m · leaves 15:31 64%

DEN · 52m · leaves 17:30 64%

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 564 BNA 05:10 → MCO United UA 1493 MCO 11:57 → IAH Connection details →	3h 57m	8h 19m	100%	95%
Southwest WN 690 BNA 08:10 → TUL United UA 5637 TUL 13:41 → IAH Connection details →	3h 56m	7h 19m	100%	89%
American AA 1065 BNA 05:31 → CLT United UA 6236 CLT 11:48 → IAH Connection details →	3h 48m	8h 03m	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