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

No clear winner: airlines and hours on this route all land within a few points of 77% on time.

Nonstops


United	IAH	BNA	2h 04m	77%	0.4%	1,805	Flying now
Spirit	IAH	BNA	–	50%few flights	0.0%	4	Not 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.


United Details →	IAH 05:15 → DEN 06:47UA 1874	1h 13m Denver	DEN 08:00 → BNA 11:42UA 605	6h 27m	97%	88%
United Details →	IAH 06:10 → ORD 09:05UA 2616	3h 24m Chicago	ORD 12:29 → BNA 14:14UA 3634 · flown by Republic	8h 04m	99%	87%
Delta Details →	IAH 05:20 → DTW 09:11DL 1389	3h 14m Detroit	DTW 12:25 → BNA 13:06DL 1557	7h 46m	99%	85%
Delta Details →	IAH 05:40 → ATL 08:43DL 1069	2h 38m Atlanta	ATL 11:21 → BNA 11:33DL 2867	5h 53m	99%	85%
United Details →	IAH 07:20 → IAD 11:28UA 1549	1h 22m Dulles	IAD 12:50 → BNA 13:49UA 213	6h 29m	97%	84%
United Details →	IAH 05:04 → ORD 07:59UA 1044	2h 38m Chicago	ORD 10:37 → BNA 12:29UA 2414	7h 25m	100%	82%
United Details →	IAH 06:30 → DEN 08:02UA 2643	1h 48m Denver	DEN 09:50 → BNA 13:33UA 1048	7h 03m	98%	79%
Delta Details →	IAH 08:05 → ATL 11:09DL 644	2h 42m Atlanta	ATL 13:51 → BNA 14:00DL 3159	5h 55m	100%	76%
Tight connection: often missed
United Details →	IAH 11:55 → ORD 14:51UA 2827	58m Chicago	ORD 15:49 → BNA 17:40UA 5665 · flown by SkyWest	5h 45m	64%	35%
American Details →	IAH 16:18 → DFW 17:48AA 3583 · flown by Envoy	1h 26m Dallas-Fort Worth	DFW 19:14 → BNA 21:11AA 3169	4h 53m	73%	27%
American Details →	IAH 12:21 → PHL 16:49AA 1927	47m Philadelphia	PHL 17:36 → BNA 18:55AA 5580 · flown by PSA	6h 34m	26%	16%

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 13m · leaves 05:15 3%

ATL · 1h 09m · leaves 05:40 3%

EWR · 1h 09m · leaves 07:20 9%

Afternoon and evening

MIA · 1h 04m · leaves 18:12 54%

PHL · 47m · leaves 12:21 74%

DFW · 1h 05m · leaves 18:53 74%

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.


United UA 2469 IAH 08:00 → MSP Delta DL 2843 MSP 12:55 → BNA Connection details →	2h 02m	7h 00m	96%	84%
American AA 3106 IAH 06:13 → ORD United UA 3634 ORD 12:29 → BNA Connection details →	3h 22m	8h 01m	97%	81%
United UA 2266 IAH 08:00 → MCI Southwest WN 2533 MCI 13:25 → BNA Connection details →	3h 22m	7h 00m	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