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 Dallas on time 87% of the time.

Best connections, one ticket

Ranked by chance you reach Dallas on time. Total trip = scheduled departure to arrival, layover included. Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	IAH 05:40 → ATL 08:43DL 1069	1h 32m Atlanta	ATL 10:15 → DAL 11:24DL 1115	5h 44m	98%	87%
Delta Details →	IAH 08:05 → ATL 11:09DL 644	2h 50m Atlanta	ATL 13:59 → DAL 15:03DL 512	7h 07m	100%	83%
Delta Details →	IAH 12:13 → ATL 15:23DL 1682	1h 15m Atlanta	ATL 16:38 → DAL 17:55DL 2780	5h 42m	85%	64%
Tight connection: often missed
Delta Details →	IAH 16:51 → ATL 20:13DL 2890	1h 02m Atlanta	ATL 21:15 → DAL 22:34DL 1104	5h 43m	59%	47%

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.

Afternoon and evening

ATL · 1h 02m · leaves 16:51 41%

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 2174 IAH 07:40 → BNA Southwest WN 5046 BNA 12:20 → DAL Connection details →	2h 33m	6h 35m	98%	83%
United UA 6263 IAH 07:20 → MAF Southwest WN 29 MAF 11:30 → DAL Connection details →	2h 38m	5h 30m	97%	82%
United UA 2250 IAH 07:20 → SAT Southwest WN 4195 SAT 11:45 → DAL Connection details →	3h 18m	5h 35m	99%	80%

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