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 3% of the time at 9 am and 1 time in 3 at 9 pm.

Nonstops (seasonal or thin)


Southwest	BNA	BUF	1h 50m	77%	0.8%	370	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	BNA 05:10 → MDW 06:45WN 573	1h 07m Chicago	MDW 07:52 → BUF 10:25WN 758	4h 12m	98%	92%
American Details →	BNA 05:31 → CLT 08:00AA 1065	3h 10m Charlotte	CLT 11:10 → BUF 12:54AA 1616	6h 24m	100%	86%
Southwest Details →	BNA 06:45 → BWI 09:35WN 462	1h 15m Baltimore	BWI 10:50 → BUF 12:05WN 762	4h 20m	100%	85%
Delta Details →	BNA 05:10 → ATL 07:20DL 2637	1h 44m Atlanta	ATL 09:04 → BUF 11:09DL 1384	4h 59m	97%	82%
Delta Details →	BNA 10:02 → MSP 12:15DL 2724	3h 07m Minneapolis	MSP 15:22 → BUF 18:27DL 1749	7h 25m	99%	81%
Delta Details →	BNA 09:48 → ATL 12:01DL 3069	1h 59m Atlanta	ATL 14:00 → BUF 16:06DL 2266	5h 18m	97%	78%
United Details →	BNA 09:25 → EWR 12:44UA 2461	3h 53m Newark	EWR 16:37 → BUF 18:05UA 3607 · flown by Republic	7h 40m	97%	77%
Delta Details →	BNA 06:05 → DTW 08:49DL 2439	1h 16m Detroit	DTW 10:05 → BUF 11:24DL 3636 · flown by SkyWest	4h 19m	97%	75%
Tight connection: often missed
JetBlue Details →	BNA 18:00 → JFK 21:34B6 1174	55m New York	JFK 22:29 → BUF 00:13 +1B6 102	5h 13m	69%	39%
American Details →	BNA 15:31 → DFW 17:44AA 1475	1h 01m Dallas-Fort Worth	DFW 18:45 → BUF 22:50AA 574	6h 19m	53%	29%
American Details →	BNA 17:41 → ORD 19:55AA 1570	1h 37m Chicago	ORD 21:32 → BUF 00:38 +1AA 403	5h 31m	66%	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

BWI · 1h 15m · leaves 06:45 0%

MDW · 1h 07m · leaves 05:10 2%

DTW · 1h 16m · leaves 06:05 3%

Afternoon and evening

BOS · 49m · leaves 13:12 42%

DFW · 1h 01m · leaves 15:31 47%

MDW · 1h 15m · leaves 16:15 51%

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.


Delta DL 2509 BNA 07:13 → BOS American AA 4440 BOS 13:55 → BUF Connection details →	3h 00m	7h 31m	95%	82%
American AA 3973 BNA 09:04 → ORD United UA 2226 ORD 13:55 → BUF Connection details →	2h 55m	6h 37m	96%	78%
Southwest WN 2735 BNA 06:30 → LGA Delta DL 5362 LGA 12:18 → BUF Connection details →	2h 33m	6h 21m	98%	73%

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