Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

No clear winner: airlines and hours on this route all land within a few points of 4 in 5 on time.

Nonstops (seasonal or thin)


Alaska	PDX	BNA	4h 30m	79%	0.0%	317	Flying now
Southwest	PDX	BNA	–	0%few flights	0.0%	1	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 2 h ahead of Portland). Layovers up to 4 hours. Pick a connection for the details.


United Details →	PDX 22:40 → ORD 04:45UA 2094	3h 55m Chicago	ORD 08:40 → BNA 10:34 +1UA 5304 · flown by SkyWest	9h 54m	100%	91%
Delta Details →	PDX 06:00 → MSP 11:12DL 2369	1h 43m Minneapolis	MSP 12:55 → BNA 15:00DL 2843	7h 00m	99%	87%
Delta Details →	PDX 22:55 → ATL 06:27DL 564	3h 25m Atlanta	ATL 09:52 → BNA 10:06 +1DL 1155	9h 10m	98%	84%
Delta Details →	PDX 00:33 → MSP 05:49DL 2359	1h 06m Minneapolis	MSP 06:55 → BNA 08:57DL 2724	6h 24m	94%	83%
United Details →	PDX 05:15 → SFO 07:01UA 1896	2h 16m San Francisco	SFO 09:17 → BNA 15:53UA 499	8h 38m	99%	83%
Southwest Details →	PDX 05:50 → DEN 09:15WN 3195	2h 50m Denver	DEN 12:05 → BNA 15:40WN 1486	7h 50m	100%	83%
Southwest Details →	PDX 18:00 → LAS 20:15WN 2256	3h 10m Las Vegas	LAS 23:25 → BNA 05:00 +1WN 2191	9h 00m	100%	82%
Alaska Details →	PDX 13:48 → SEA 14:43AS 2205 · flown by Horizon	2h 48m Seattle	SEA 17:31 → BNA 23:59AS 416	8h 11m	100%	82%
Tight connection: often missed
Alaska Details →	PDX 21:30 → SEA 22:27AS 2421 · flown by Horizon	48m Seattle	SEA 23:15 → BNA 05:40 +1AS 382	6h 10m	75%	57%
United Details →	PDX 10:46 → ORD 17:00UA 1641	58m Chicago	ORD 17:58 → BNA 19:44UA 2784	6h 58m	74%	45%
Southwest Details →	PDX 11:50 → MDW 17:45WN 3202	55m Chicago	MDW 18:40 → BNA 20:10WN 1073	6h 20m	46%	22%

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

DEN · 1h 19m · leaves 05:00 2%

SEA · 55m · leaves 07:19 4%

MSP · 1h 06m · leaves 00:33 6%

Afternoon and evening

SEA · 48m · leaves 21:30 25%

ORD · 58m · leaves 10:46 26%

MDW · 55m · leaves 11:50 54%

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.


Alaska AS 278 PDX 17:37 → LAX American AA 2149 LAX 23:59 → BNA Connection details →	3h 50m	10h 31m	99%	89%
Alaska AS 376 PDX 22:59 → ORD United UA 5304 ORD 08:40 → BNA Connection details →	3h 40m	9h 35m	99%	88%
United UA 2094 PDX 22:40 → ORD American AA 3439 ORD 08:29 → BNA Connection details →	3h 44m	9h 32m	100%	86%

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