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 2% of the time at 7 am and almost half the time at 7 pm.

Nonstops


JetBlue	BOS	BNA	2h 56m	74%	2.5%	874	Flying now
Delta	BOS	BNA	3h 00m	73%	2.6%	1,036	Flying now
Southwest	BOS	BNA	2h 50m	66%	1.2%	999	Flying now
American	BOS	BNA	–	100%few flights	0.0%	2	Not flying now
Spirit	BOS	BNA	2h 47m	86%few flights	4.3%	23	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 (Nashville is 1 h behind Boston). Layovers up to 4 hours. Pick a connection for the details.


United Details →	BOS 08:15 → ORD 10:12UA 1834	2h 17m Chicago	ORD 12:29 → BNA 14:14UA 3634 · flown by Republic	6h 59m	99%	88%
Delta Details →	BOS 05:30 → ATL 08:15DL 2242	3h 06m Atlanta	ATL 11:21 → BNA 11:33DL 2867	7h 03m	100%	87%
Delta Details →	BOS 07:15 → MSP 09:30DL 1138	3h 25m Minneapolis	MSP 12:55 → BNA 15:00DL 2843	8h 45m	99%	85%
United Details →	BOS 05:45 → IAD 07:23UA 1734	1h 07m Dulles	IAD 08:30 → BNA 09:29UA 1366	4h 44m	98%	85%
United Details →	BOS 09:25 → IAD 11:07UA 2098	1h 43m Dulles	IAD 12:50 → BNA 13:49UA 213	5h 24m	97%	83%
American Details →	BOS 05:10 → ORD 07:04AA 3324	1h 25m Chicago	ORD 08:29 → BNA 10:11AA 3439 · flown by Envoy	6h 02m	96%	80%
Southwest Details →	BOS 05:30 → BWI 07:05WN 727	2h 40m Baltimore	BWI 09:45 → BNA 10:35WN 487	6h 05m	96%	80%
United Details →	BOS 06:00 → ORD 07:58UA 1414	2h 39m Chicago	ORD 10:37 → BNA 12:29UA 2414	7h 29m	100%	79%
Tight connection: often missed
American Details →	BOS 12:21 → JFK 13:50AA 4366 · flown by Republic	49m New York	JFK 14:39 → BNA 16:21AA 4710 · flown by Republic	5h 00m	71%	50%
Delta Details →	BOS 17:05 → JFK 18:43DL 5814 · flown by Republic	1h 17m New York	JFK 20:00 → BNA 22:05DL 4908 · flown by Endeavor	5h 49m	74%	46%
American Details →	BOS 15:15 → MIA 18:58AA 1565	1h 05m Miami	MIA 20:03 → BNA 21:26AA 2833	7h 12m	70%	45%

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

IAH · 1h 20m · leaves 07:25 2%

IAD · 1h 07m · leaves 05:45 2%

DEN · 1h 12m · leaves 06:25 5%

Afternoon and evening

DFW · 55m · leaves 12:39 42%

ORD · 57m · leaves 17:00 49%

MCI · 50m · leaves 14:20 62%

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.


JetBlue B6 1883 BOS 06:30 → RDU Southwest WN 684 RDU 10:40 → BNA Connection details →	2h 07m	5h 45m	94%	87%
American AA 1509 BOS 07:00 → ORD United UA 3634 ORD 12:29 → BNA Connection details →	3h 28m	8h 14m	97%	85%
American AA 2159 BOS 06:00 → DCA Southwest WN 1426 DCA 10:35 → BNA Connection details →	2h 51m	6h 30m	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