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 one-hour layover misses 3% of the time at 9 am and 1 time in 5 at 7 pm.

Nonstops (seasonal or thin)


Alaska	PDX	DCA	5h 06m	86%	0.3%	363	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


Alaska + Americantwo ticketsDetails →	PDX 21:56 → BOS 06:20AS 436	2h 58m Boston	BOS 09:18 → DCA 10:59 +1AA 1605	10h 03m	99%	89%
Southwest Details →	PDX 23:30 → MDW 05:20WN 3203	2h 55m Chicago	MDW 08:15 → DCA 11:10 +1WN 2569	8h 40m	100%	89%
United Details →	PDX 05:00 → DEN 08:31UA 459	59m Denver	DEN 09:30 → DCA 14:59UA 789	6h 59m	97%	87%
United Details →	PDX 23:59 → IAH 06:05UA 780	3h 42m Houston	IAH 09:47 → DCA 13:57 +1UA 2670	10h 58m	99%	87%
United Details →	PDX 05:15 → SFO 07:01UA 1896	1h 19m San Francisco	SFO 08:20 → DCA 16:47UA 1678	8h 32m	97%	86%
Delta Details →	PDX 22:35 → JFK 06:55DL 2139	1h 40m New York	JFK 08:35 → DCA 10:02 +1DL 5750 · flown by Republic	8h 27m	98%	85%
United Details →	PDX 22:40 → ORD 04:45UA 2094	2h 15m Chicago	ORD 07:00 → DCA 09:59 +1UA 482	8h 19m	100%	85%
Delta Details →	PDX 05:45 → SLC 08:39DL 1270	1h 51m Salt Lake City	SLC 10:30 → DCA 16:37DL 820	7h 52m	100%	84%
Tight connection: often missed
American Details →	PDX 23:07 → ORD 05:07AA 2977	51m Chicago	ORD 05:58 → DCA 09:15 +1AA 4339 · flown by Republic	7h 08m	58%	46%
American Details →	PDX 11:54 → DFW 17:49AA 2287	1h 04m Dallas-Fort Worth	DFW 18:53 → DCA 22:59AA 2752	8h 06m	75%	44%
American Details →	PDX 13:45 → ORD 19:50AA 3303	1h 05m Chicago	ORD 20:55 → DCA 23:59AA 1187	7h 14m	61%	31%

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 · 59m · leaves 05:00 3%

SFO · 1h 19m · leaves 05:15 3%

ORD · 1h 15m · leaves 22:40 7%

Afternoon and evening

MSP · 54m · leaves 13:45 20%

DFW · 1h 04m · leaves 11:54 25%

ORD · 1h 05m · leaves 13:45 39%

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