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 Dulles on time 83% of the time.

Best connections, one ticket

Ranked by chance you reach Dulles on time. Total trip = scheduled departure to arrival, layover included (Dulles is 1 h ahead of Houston). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	HOU 06:00 → ATL 09:05DL 2557	3h 12m Atlanta	ATL 12:17 → IAD 14:02DL 2135	7h 02m	99%	83%
Delta Details →	HOU 13:10 → ATL 16:18DL 1195	2h 57m Atlanta	ATL 19:15 → IAD 21:03DL 1309	6h 54m	96%	71%
Delta Details →	HOU 10:16 → ATL 13:20DL 1509	1h 39m Atlanta	ATL 14:59 → IAD 16:47DL 1695	5h 31m	95%	70%
Delta Details →	HOU 17:12 → ATL 20:28DL 2381	2h 25m Atlanta	ATL 22:53 → IAD 00:44 +1DL 2549	6h 32m	94%	68%
American Details →	HOU 09:30 → DFW 10:59AA 3573 · flown by Envoy	3h 35m Dallas-Fort Worth	DFW 14:34 → IAD 18:34AA 1904	8h 05m	98%	57%
Tight connection: often missed
American Details →	HOU 16:14 → DFW 17:38AA 5002 · flown by SkyWest	1h 06m Dallas-Fort Worth	DFW 18:44 → IAD 22:46AA 1132	5h 38m	62%	28%

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

DFW · 1h 06m · leaves 16:14 38%

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 1796 HOU 07:50 → MSY United UA 2497 MSY 12:17 → IAD Connection details →	3h 17m	7h 00m	100%	91%
Southwest WN 2251 HOU 05:30 → LAS United UA 1140 LAS 08:48 → IAD Connection details →	2h 18m	9h 54m	100%	87%
Southwest WN 4639 HOU 19:10 → DEN United UA 1924 DEN 23:59 → IAD Connection details →	3h 04m	9h 17m	93%	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