Sun, Oct 4 has passed, so this is the 12-month record.

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

No nonstop, and no clear pattern: the best connection reaches Long Beach on time 4 times in 5.

Best connections, one ticket

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


Delta Details →	IAD 07:15 → SLC 09:52DL 432	1h 13m Salt Lake City	SLC 11:05 → LGB 12:02DL 1116	7h 47m	91%	79%

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 13m · leaves 07:15 9%

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.


United UA 1587 IAD 12:48 → DEN Southwest WN 1037 DEN 18:15 → LGB Connection details →	3h 33m	10h 07m	99%	55%
United UA 792 IAD 08:15 → DEN Southwest WN 4259 DEN 14:05 → LGB Connection details →	3h 55m	10h 15m	97%	50%
United UA 637 IAD 08:30 → AUS Southwest WN 4915 AUS 13:15 → LGB Connection details →	2h 19m	8h 40m	98%	37%

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