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 1% of the time at 9 am and 13% of the time at 7 pm.

Nonstops


Delta	PDX	ATL	4h 45m	91%	1.0%	1,264	Flying now
Alaska	PDX	ATL	4h 45m	80%	0.7%	286	Flying now
American	PDX	ATL	–	100%few flights	0.0%	1	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	PDX 21:20 → BWI 05:15WN 3194	3h 05m Baltimore	BWI 08:20 → ATL 10:20 +1WN 3931	9h 58m	98%	90%
Southwest Details →	PDX 23:30 → MDW 05:20WN 3203	1h 55m Chicago	MDW 07:15 → ATL 10:05 +1WN 3054	7h 35m	98%	90%
Delta Details →	PDX 00:33 → MSP 05:49DL 2359	2h 39m Minneapolis	MSP 08:28 → ATL 11:54DL 1052	8h 21m	99%	88%
American Details →	PDX 22:30 → PHL 06:43AA 2285	2h 49m Philadelphia	PHL 09:32 → ATL 11:53 +1AA 4338 · flown by Republic	10h 23m	99%	87%
United Details →	PDX 22:40 → ORD 04:45UA 2094	2h 27m Chicago	ORD 07:12 → ATL 10:27 +1UA 425	8h 47m	100%	86%
Delta Details →	PDX 17:24 → SLC 20:19DL 1244	3h 16m Salt Lake City	SLC 23:35 → ATL 05:15 +1DL 912	8h 51m	100%	86%
Delta Details →	PDX 20:44 → SEA 21:56DL 3923 · flown by SkyWest	2h 03m Seattle	SEA 23:59 → ATL 07:46 +1DL 652	8h 02m	98%	86%
Delta Details →	PDX 11:20 → SEA 12:36DL 3818 · flown by SkyWest	3h 29m Seattle	SEA 16:05 → ATL 23:59DL 560	9h 39m	99%	86%
Tight connection: often missed
Delta Details →	PDX 23:15 → DTW 06:30DL 919	55m Detroit	DTW 07:25 → ATL 09:26 +1DL 965	7h 11m	71%	60%
United Details →	PDX 18:03 → SFO 19:53UA 1656	1h 27m San Francisco	SFO 21:20 → ATL 05:20 +1UA 1603	8h 17m	67%	56%
Southwest Details →	PDX 11:50 → MDW 17:45WN 3202	1h 05m Chicago	MDW 18:50 → ATL 21:45WN 4140	6h 55m	71%	25%

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 16m · leaves 05:45 1%

MSP · 1h 11m · leaves 00:33 5%

DEN · 1h 00m · leaves 05:50 7%

Afternoon and evening

PHL · 1h 03m · leaves 12:35 17%

ORD · 1h 17m · leaves 11:26 25%

MDW · 1h 05m · leaves 11:50 29%

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 3209 PDX 07:25 → SJC Delta DL 809 SJC 12:46 → ATL Connection details →	3h 31m	10h 10m	100%	88%
Alaska AS 485 PDX 08:15 → SMF Delta DL 904 SMF 12:18 → ATL Connection details →	2h 30m	8h 47m	100%	87%
Southwest WN 3198 PDX 17:35 → DEN Delta DL 302 DEN 00:40 → ATL Connection details →	3h 40m	9h 07m	96%	87%

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