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 80-minute layover misses 2% of the time at 9 am and 1 time in 4 at 6 pm.

Nonstops (seasonal or thin)


Alaska	PDX	MCI	3h 26m	85%	0.3%	338	Flying now
Southwest	PDX	MCI	3h 20m	67%few flights	0.0%	33	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	PDX 23:30 → MDW 05:20WN 3203	2h 40m Chicago	MDW 08:00 → MCI 09:30 +1WN 2808	8h 00m	100%	98%
Southwest Details →	PDX 05:00 → LAS 07:10WN 344	2h 55m Las Vegas	LAS 10:05 → MCI 14:55WN 786	7h 55m	96%	96%
American Details →	PDX 00:45 → DFW 06:33AA 1460	3h 27m Dallas-Fort Worth	DFW 10:00 → MCI 11:44AA 3661 · flown by Envoy	8h 59m	98%	88%
Delta Details →	PDX 05:45 → SLC 08:39DL 1270	1h 55m Salt Lake City	SLC 10:34 → MCI 14:00DL 2882	6h 15m	100%	88%
Southwest Details →	PDX 07:30 → DEN 11:00WN 4099	1h 30m Denver	DEN 12:30 → MCI 15:05WN 351	5h 35m	100%	88%
Delta Details →	PDX 06:00 → MSP 11:12DL 2369	2h 33m Minneapolis	MSP 13:45 → MCI 15:14DL 1613	7h 14m	100%	88%
United Details →	PDX 05:00 → DEN 08:31UA 459	1h 19m Denver	DEN 09:50 → MCI 12:38UA 2159	5h 38m	98%	86%
United Details →	PDX 08:50 → DEN 12:24UA 2375	1h 16m Denver	DEN 13:40 → MCI 16:22UA 586	5h 32m	98%	85%
Tight connection: often missed
United Details →	PDX 16:15 → DEN 19:51UA 1787	49m Denver	DEN 20:40 → MCI 23:25UA 1596	5h 10m	73%	48%
American Details →	PDX 13:34 → DFW 19:31AA 2286	48m Dallas-Fort Worth	DFW 20:19 → MCI 21:57AA 2267	6h 23m	49%	26%
Southwest Details →	PDX 14:45 → DEN 18:20WN 2519	1h 15m Denver	DEN 19:35 → MCI 22:15WN 1589	5h 32m	65%	23%

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%

MSP · 1h 06m · leaves 00:33 6%

DFW · 1h 15m · leaves 05:07 9%

Afternoon and evening

DEN · 1h 15m · leaves 14:45 35%

ORD · 47m · leaves 14:25 50%

DFW · 48m · leaves 13:34 51%

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 4099 PDX 07:30 → DEN United UA 586 DEN 13:40 → MCI Connection details →	2h 40m	6h 52m	100%	88%
United UA 459 PDX 05:00 → DEN Southwest WN 351 DEN 12:30 → MCI Connection details →	3h 59m	8h 05m	99%	87%
Alaska AS 376 PDX 22:59 → ORD United UA 1484 ORD 08:40 → MCI Connection details →	3h 40m	9h 30m	99%	82%

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