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 5 pm.

Nonstops


United	BNA	IAD	1h 50m	80%	1.1%	988	Flying now
Allegiant	BNA	IAD	1h 47m	81%few flights	2.6%	38	Flying now
Southwest	BNA	IAD	–	100%few flights	0.0%	1	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	BNA 06:00 → ORD 07:58UA 451	3h 09m Chicago	ORD 11:07 → IAD 14:12UA 1869	7h 12m	97%	87%
United Details →	BNA 10:26 → DEN 12:23UA 502	1h 30m Denver	DEN 13:53 → IAD 19:22UA 347	7h 56m	96%	84%
Delta Details →	BNA 06:15 → ATL 08:31DL 3001	3h 46m Atlanta	ATL 12:17 → IAD 14:02DL 2135	6h 47m	99%	83%
Delta Details →	BNA 05:10 → ATL 07:20DL 2637	2h 30m Atlanta	ATL 09:50 → IAD 11:39DL 1444	5h 28m	98%	81%
American Details →	BNA 05:31 → CLT 08:00AA 1065	3h 05m Charlotte	CLT 11:05 → IAD 12:38AA 5220 · flown by PSA	6h 07m	100%	80%
Delta Details →	BNA 10:06 → DTW 12:46DL 2682	2h 24m Detroit	DTW 15:10 → IAD 16:42DL 1787	5h 36m	98%	78%
Delta Details →	BNA 10:02 → MSP 12:15DL 2724	2h 15m Minneapolis	MSP 14:30 → IAD 18:04DL 3783 · flown by SkyWest	7h 02m	97%	75%
United Details →	BNA 07:00 → DEN 08:55UA 1716	1h 25m Denver	DEN 10:20 → IAD 15:53UA 2087	7h 53m	95%	75%
Tight connection: often missed
United Details →	BNA 18:24 → ORD 20:30UA 4679 · flown by SkyWest	1h 10m Chicago	ORD 21:40 → IAD 00:45 +1UA 2766	5h 21m	70%	46%
United Details →	BNA 15:01 → ORD 17:04UA 3440 · flown by Republic	1h 08m Chicago	ORD 18:12 → IAD 21:22UA 2202	5h 21m	70%	37%
American Details →	BNA 15:31 → DFW 17:44AA 1475	1h 00m Dallas-Fort Worth	DFW 18:44 → IAD 22:46AA 1132	6h 21m	51%	23%

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

ATL · 1h 19m · leaves 06:15 4%

CLT · 1h 15m · leaves 07:13 14%

Afternoon and evening

ORD · 1h 10m · leaves 18:24 30%

CLT · 52m · leaves 19:14 45%

DFW · 1h 00m · leaves 15:31 49%

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 594 BNA 08:05 → MSY United UA 2497 MSY 12:17 → IAD Connection details →	2h 37m	6h 45m	99%	90%
Southwest WN 4289 BNA 08:10 → MCI United UA 688 MCI 12:30 → IAD Connection details →	2h 40m	6h 53m	100%	89%
Southwest WN 564 BNA 05:10 → MCO United UA 1893 MCO 09:37 → IAD Connection details →	1h 37m	5h 45m	97%	89%

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