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 2% of the time at 8 am and 1 time in 3 at 8 pm.

Nonstops


Delta	BNA	SEA	5h 06m	82%	1.2%	512	Flying now
Alaska	BNA	SEA	5h 08m	72%	1.3%	843	Flying now
Southwest	BNA	SEA	5h 00m	43%	0.8%	121	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Seattle on time. Total trip = scheduled departure to arrival, layover included (Seattle is 2 h behind Nashville). Layovers up to 4 hours. Pick a connection for the details.


Alaska Details →	BNA 16:43 → PDX 19:33AS 1350	1h 57m Portland	PDX 21:30 → SEA 22:27AS 2421 · flown by Horizon	7h 44m	96%	87%
Delta Details →	BNA 07:05 → AUS 09:26DL 4146 · flown by SkyWest	1h 53m Austin	AUS 11:19 → SEA 13:54DL 1684	8h 49m	93%	85%
Delta Details →	BNA 06:15 → ATL 08:31DL 3001	2h 39m Atlanta	ATL 11:10 → SEA 13:38DL 648	9h 23m	99%	84%
Delta Details →	BNA 06:00 → MSP 08:12DL 2221	2h 58m Minneapolis	MSP 11:10 → SEA 12:58DL 889	8h 58m	99%	84%
United Details →	BNA 07:00 → DEN 08:55UA 1716	2h 27m Denver	DEN 11:22 → SEA 13:22UA 1424	8h 22m	98%	84%
Delta Details →	BNA 07:35 → SLC 10:13DL 1068	1h 22m Salt Lake City	SLC 11:35 → SEA 12:52DL 2995	7h 17m	94%	82%
United Details →	BNA 08:30 → IAD 11:17UA 1709	1h 53m Dulles	IAD 13:10 → SEA 15:55UA 2241	9h 25m	97%	81%
United Details →	BNA 10:26 → DEN 12:23UA 502	1h 37m Denver	DEN 14:00 → SEA 16:00UA 2164	7h 34m	96%	81%
Tight connection: often missed
American Details →	BNA 16:30 → CLT 19:05AA 1526	1h 14m Charlotte	CLT 20:19 → SEA 22:59AA 1674	8h 30m	68%	41%
United Details →	BNA 14:54 → SFO 17:42UA 298	46m San Francisco	SFO 18:28 → SEA 20:53UA 1577	7h 59m	36%	25%
Southwest Details →	BNA 16:50 → DEN 18:50WN 504	1h 00m Denver	DEN 19:50 → SEA 21:50WN 1716	7h 00m	39%	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

CLT · 1h 20m · leaves 05:31 2%

DAL · 1h 15m · leaves 05:10 4%

MSP · 53m · leaves 06:00 7%

Afternoon and evening

DFW · 53m · leaves 19:32 54%

DEN · 1h 00m · leaves 16:50 61%

SFO · 46m · leaves 14:54 64%

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 4791 BNA 16:20 → SLC Delta DL 2998 SLC 22:45 → SEA Connection details →	3h 50m	9h 39m	98%	90%
Southwest WN 3770 BNA 08:02 → PHX Delta DL 2419 PHX 12:05 → SEA Connection details →	2h 27m	9h 16m	98%	89%
Southwest WN 544 BNA 06:35 → LAS Delta DL 2922 LAS 10:59 → SEA Connection details →	2h 34m	9h 16m	98%	87%

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