tailodds FORECAST
Tickets
Any day
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)

Nonstop details →
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, any airlines

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.
UnitedDetails → 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%
Alaska + Americantwo ticketsDetails → PDX 17:37 → LAX 20:09AS 278 3h 50m Los Angeles LAX 23:59 → BNA 06:08 +1AA 2149 10h 31m 99% 89%
DeltaDetails → PDX 06:00 → MSP 11:12DL 2369 1h 43m Minneapolis MSP 12:55 → BNA 15:00DL 2843 7h 00m 99% 87%
DeltaDetails → PDX 22:55 → ATL 06:27DL 564 3h 25m Atlanta ATL 09:52 → BNA 10:06 +1DL 1155 9h 10m 98% 84%
Alaska + Southwesttwo ticketsDetails → PDX 21:56 → BOS 06:20AS 436 2h 45m Boston BOS 09:05 → BNA 10:45 +1WN 724 10h 49m 99% 83%
Alaska + Americantwo ticketsDetails → PDX 22:59 → ORD 05:00AS 376 3h 29m Chicago ORD 08:29 → BNA 10:11 +1AA 3439 · flown by Envoy 9h 13m 99% 83%
DeltaDetails → PDX 00:33 → MSP 05:49DL 2359 1h 06m Minneapolis MSP 06:55 → BNA 08:57DL 2724 6h 24m 94% 83%
UnitedDetails → PDX 05:15 → SFO 07:01UA 1896 2h 16m San Francisco SFO 09:17 → BNA 15:53UA 499 8h 38m 99% 83%
Tight connection: often missed
AlaskaDetails → PDX 21:30 → SEA 22:27AS 2421 · flown by Horizon 48m Seattle SEA 23:15 → BNA 05:40 +1AS 382 6h 10m 75% 57%
UnitedDetails → PDX 10:46 → ORD 17:00UA 1641 58m Chicago ORD 17:58 → BNA 19:44UA 2784 6h 58m 74% 45%
SouthwestDetails → 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.

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