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 75-minute layover misses 4% of the time at 9 am and 18% of the time at 8 pm.

Nonstops


United	BNA	DEN	3h 03m	80%	0.9%	1,178	Flying now
Frontier	BNA	DEN	3h 10m	79%	1.2%	332	Flying now
Southwest	BNA	DEN	3h 00m	73%	0.4%	2,135	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Denver on time. Total trip = scheduled departure to arrival, layover included (Denver is 1 h behind Nashville). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	BNA 06:15 → STL 07:35WN 679	1h 07m St Louis	STL 08:42 → DEN 10:02WN 3910	4h 47m	98%	87%
Delta Details →	BNA 07:30 → ATL 09:44DL 2802	2h 01m Atlanta	ATL 11:45 → DEN 12:59DL 706	6h 29m	97%	83%
United Details →	BNA 07:40 → ORD 09:41UA 2465	1h 13m Chicago	ORD 10:54 → DEN 12:45UA 581	6h 05m	89%	83%
Delta Details →	BNA 06:15 → ATL 08:31DL 3001	1h 19m Atlanta	ATL 09:50 → DEN 11:07DL 995	5h 52m	96%	80%
Southwest Details →	BNA 05:02 → HOU 07:02WN 4430	1h 13m Houston	HOU 08:15 → DEN 09:45WN 1971	5h 43m	100%	79%
Delta Details →	BNA 09:48 → ATL 12:01DL 3069	49m Atlanta	ATL 12:50 → DEN 14:04DL 957	5h 16m	89%	78%
United Details →	BNA 18:42 → IAH 20:54UA 2490	1h 16m Houston	IAH 22:10 → DEN 23:57UA 1066	6h 15m	86%	76%
United Details →	BNA 06:30 → IAH 08:42UA 396	50m Houston	IAH 09:32 → DEN 11:08UA 1450	5h 38m	89%	76%
Tight connection: often missed
Southwest Details →	BNA 18:55 → HOU 21:02WN 534	1h 38m Houston	HOU 22:40 → DEN 00:20 +1WN 1975	6h 20m	68%	46%
United Details →	BNA 16:59 → ORD 19:00UA 1884	1h 00m Chicago	ORD 20:00 → DEN 22:01UA 767	6h 02m	57%	38%
American Details →	BNA 15:31 → DFW 17:44AA 1475	46m Dallas-Fort Worth	DFW 18:30 → DEN 19:41AA 2235	5h 10m	29%	13%

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

HOU · 1h 13m · leaves 05:02 0%

STL · 1h 07m · leaves 06:15 2%

ATL · 1h 05m · leaves 08:33 3%

Afternoon and evening

DAL · 53m · leaves 18:58 65%

DFW · 46m · leaves 15:31 71%

SAT · 48m · leaves 15:22 81%

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 679 BNA 06:15 → STL United UA 2459 STL 09:06 → DEN Connection details →	1h 31m	5h 15m	95%	85%
Southwest WN 690 BNA 08:10 → TUL United UA 5276 TUL 11:44 → DEN Connection details →	1h 59m	5h 34m	96%	81%
American AA 2821 BNA 05:01 → DFW United UA 644 DFW 08:45 → DEN Connection details →	1h 33m	6h 05m	88%	74%

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