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

The nonstop is quickest: Delta PDX → DTW (4h 14m), on time 78% of the time. United via Denver (6h 27m) is more reliable, 93%, but takes 2h 13m longer.

Nonstops (seasonal or thin)


Delta	PDX	DTW	4h 14m	79%	1.1%	379	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Detroit on time. Total trip = scheduled departure to arrival, layover included (Detroit is 3 h ahead of Portland). Layovers up to 4 hours. Pick a connection for the details.


United Details →	PDX 22:40 → ORD 04:45UA 2094	2h 35m Chicago	ORD 07:20 → DTW 09:52 +1UA 1344	8h 12m	100%	95%
United Details →	PDX 05:00 → DEN 08:31UA 459	1h 04m Denver	DEN 09:35 → DTW 14:27UA 1915	6h 27m	97%	93%
Delta Details →	PDX 05:45 → SLC 08:39DL 1270	1h 06m Salt Lake City	SLC 09:45 → DTW 15:14DL 2236	6h 29m	99%	93%
Delta Details →	PDX 06:00 → MSP 11:12DL 2369	1h 43m Minneapolis	MSP 12:55 → DTW 15:38DL 1519	6h 38m	99%	90%
United Details →	PDX 23:59 → IAH 06:05UA 780	3h 40m Houston	IAH 09:45 → DTW 13:42 +1UA 4064 · flown by Mesa	10h 43m	99%	89%
Delta Details →	PDX 00:33 → MSP 05:49DL 2359	3h 11m Minneapolis	MSP 09:00 → DTW 11:43DL 1433	8h 10m	99%	88%
Delta Details →	PDX 05:30 → SEA 06:41DL 4008 · flown by SkyWest	3h 04m Seattle	SEA 09:45 → DTW 17:05DL 2324	8h 35m	98%	87%
Alaska Details →	PDX 17:30 → SEA 18:33AS 430	3h 49m Seattle	SEA 22:22 → DTW 05:41 +1AS 343	9h 11m	100%	86%
Tight connection: often missed
Delta Details →	PDX 22:55 → ATL 06:27DL 564	58m Atlanta	ATL 07:25 → DTW 09:20 +1DL 1646	7h 25m	74%	67%
American Details →	PDX 11:26 → ORD 17:42AA 2284	1h 14m Chicago	ORD 18:56 → DTW 21:34AA 4931 · flown by SkyWest	7h 07m	74%	39%
American Details →	PDX 11:54 → DFW 17:49AA 2287	58m Dallas-Fort Worth	DFW 18:47 → DTW 22:36AA 3108	7h 42m	68%	34%

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

SLC · 1h 06m · leaves 05:45 1%

SEA · 58m · leaves 07:19 3%

DEN · 1h 04m · leaves 05:00 3%

Afternoon and evening

ORD · 1h 14m · leaves 11:26 26%

MDW · 1h 05m · leaves 11:50 29%

DFW · 58m · leaves 11:54 32%

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 376 PDX 22:59 → ORD United UA 1344 ORD 07:20 → DTW Connection details →	2h 20m	7h 53m	98%	90%
United UA 2334 PDX 18:50 → DEN Delta DL 1096 DEN 00:59 → DTW Connection details →	2h 30m	7h 58m	97%	88%
United UA 2094 PDX 22:40 → ORD American AA 4103 ORD 07:30 → DTW Connection details →	2h 45m	8h 24m	96%	88%

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