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 4% of the time at 9 am and 36% of the time at 8 pm.

Nonstops (seasonal or thin)


Alaska	BNA	PDX	4h 58m	73%	0.3%	317	Flying now
Southwest	BNA	PDX	–	100%few flights	0.0%	1	Not flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


Delta + Alaskatwo ticketsDetails →	BNA 07:35 → SLC 10:13DL 1068	2h 33m Salt Lake City	SLC 12:46 → PDX 13:49AS 3117 · flown by SkyWest	8h 14m	96%	88%
Southwest + Alaskatwo ticketsDetails →	BNA 07:00 → LAS 08:50WN 3993	2h 10m Las Vegas	LAS 11:00 → PDX 13:20AS 1467	8h 20m	97%	87%
Alaska Details →	BNA 09:25 → SEA 12:26AS 623	1h 19m Seattle	SEA 13:45 → PDX 14:48AS 3204 · flown by SkyWest	7h 23m	98%	86%
Southwest + Alaskatwo ticketsDetails →	BNA 13:18 → STL 14:32WN 1371	3h 05m St Louis	STL 17:37 → PDX 19:47AS 1538	8h 29m	100%	85%
Delta Details →	BNA 06:25 → LAX 08:46DL 891	1h 14m Los Angeles	LAX 10:00 → PDX 12:25DL 2766	8h 00m	96%	84%
United Details →	BNA 10:26 → DEN 12:23UA 502	1h 04m Denver	DEN 13:27 → PDX 15:13UA 2455	6h 47m	92%	83%
Southwest + Alaskatwo ticketsDetails →	BNA 07:55 → DEN 09:40WN 499	2h 22m Denver	DEN 12:02 → PDX 13:46AS 684	7h 51m	94%	82%
United Details →	BNA 07:00 → DEN 08:55UA 1716	2h 32m Denver	DEN 11:27 → PDX 13:09UA 644	8h 09m	98%	82%
Tight connection: often missed
American Details →	BNA 07:28 → PHX 09:13AA 3086	52m Phoenix	PHX 10:05 → PDX 12:49AA 1625	7h 21m	70%	58%
Delta Details →	BNA 16:31 → ATL 18:49DL 3142	51m Atlanta	ATL 19:40 → PDX 21:45DL 357	7h 14m	64%	46%
American Details →	BNA 15:57 → ORD 18:05AA 6200 · flown by SkyWest	1h 15m Chicago	ORD 19:20 → PDX 21:50AA 2977	7h 53m	66%	31%

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

LAX · 1h 14m · leaves 06:25 4%

ATL · 1h 10m · leaves 05:10 4%

ORD · 1h 10m · leaves 09:04 7%

Afternoon and evening

SFO · 1h 03m · leaves 16:59 36%

ORD · 55m · leaves 16:59 52%

DFW · 47m · leaves 17:45 56%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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