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 75-minute layover misses 7% of the time at 10 am and almost half the time at 8 pm.

Nonstops


United	ORD	PDX	4h 32m	74%	0.6%	1,404	Flying now
Alaska	ORD	PDX	4h 35m	74%	1.2%	506	Flying now
American	ORD	PDX	4h 31m	62%	1.0%	895	Flying now

Best connections, one ticket

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 Chicago). Layovers up to 4 hours. Pick a connection for the details.


United Details →	ORD 08:40 → DEN 10:31UA 526	2h 56m Denver	DEN 13:27 → PDX 15:13UA 2455	8h 33m	100%	90%
Alaska Details →	ORD 06:00 → SEA 08:38AS 715	1h 36m Seattle	SEA 10:14 → PDX 11:21AS 3090 · flown by SkyWest	7h 21m	93%	89%
United Details →	ORD 05:00 → DEN 06:42UA 2666	1h 23m Denver	DEN 08:05 → PDX 09:47UA 1247	6h 47m	99%	87%
Alaska Details →	ORD 08:02 → SEA 10:37AS 587	3h 08m Seattle	SEA 13:45 → PDX 14:48AS 3204 · flown by SkyWest	8h 46m	98%	85%
United Details →	ORD 05:30 → IAH 08:18UA 2310	1h 12m Houston	IAH 09:30 → PDX 11:56UA 740	8h 26m	99%	85%
Delta Details →	ORD 06:30 → MSP 08:06DL 1717	2h 54m Minneapolis	MSP 11:00 → PDX 12:40DL 2167	8h 10m	97%	84%
United Details →	ORD 06:00 → DEN 07:42UA 2806	3h 45m Denver	DEN 11:27 → PDX 13:09UA 644	9h 09m	100%	83%
United Details →	ORD 10:54 → DEN 12:45UA 581	3h 15m Denver	DEN 16:00 → PDX 17:46UA 1337	8h 52m	97%	82%
Tight connection: often missed
American Details →	ORD 17:34 → PHX 19:19AA 3261	1h 06m Phoenix	PHX 20:25 → PDX 23:08AA 561	7h 34m	59%	39%
American Details →	ORD 16:51 → DFW 19:28AA 2988	1h 21m Dallas-Fort Worth	DFW 20:49 → PDX 22:51AA 2283	8h 00m	62%	34%
American Details →	ORD 15:50 → DFW 18:28AA 2754	1h 01m Dallas-Fort Worth	DFW 19:29 → PDX 21:29AA 2298	7h 39m	64%	32%

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

IAH · 1h 12m · leaves 05:30 1%

ATL · 1h 19m · leaves 06:35 7%

MSP · 54m · leaves 06:30 15%

Afternoon and evening

PHX · 1h 06m · leaves 17:34 41%

SEA · 1h 07m · leaves 17:42 46%

MSP · 54m · leaves 15:55 48%

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.


American AA 3428 ORD 10:05 → BIL Alaska AS 2297 BIL 15:43 → PDX Connection details →	3h 20m	8h 41m	100%	92%
American AA 2640 ORD 12:00 → SNA Alaska AS 589 SNA 18:09 → PDX Connection details →	3h 49m	10h 31m	99%	92%
United UA 1304 ORD 08:40 → SNA Alaska AS 712 SNA 14:05 → PDX Connection details →	2h 44m	9h 49m	98%	89%

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