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

No clear winner: airlines and hours on this route all land within a few points of 4 in 5 on time.

Nonstops


Delta	ATL	HOU	2h 08m	82%	1.9%	1,397	Flying now
Southwest	ATL	HOU	2h 15m	81%	0.7%	1,482	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	ATL 06:25 → DEN 07:30WN 2114	2h 45m Denver	DEN 10:15 → HOU 13:55WN 1543	8h 30m	100%	81%
Southwest Details →	ATL 06:30 → DAL 07:35WN 192	2h 55m Dallas	DAL 10:30 → HOU 11:45WN 23	6h 15m	100%	80%
Southwest Details →	ATL 09:30 → DEN 10:40WN 202	1h 50m Denver	DEN 12:30 → HOU 16:05WN 1544	7h 35m	100%	79%
Southwest Details →	ATL 07:00 → BWI 08:50WN 4364	1h 10m Baltimore	BWI 10:00 → HOU 12:15WN 956	6h 15m	91%	77%
American Details →	ATL 06:01 → DFW 07:33AA 2770	3h 18m Dallas-Fort Worth	DFW 10:51 → HOU 12:16AA 6413 · flown by SkyWest	7h 15m	98%	76%
Southwest Details →	ATL 16:25 → IND 18:05WN 560	2h 15m Indianapolis	IND 20:20 → HOU 21:50WN 2124	6h 25m	96%	73%
Southwest Details →	ATL 08:00 → MDW 08:55WN 1270	1h 15m Chicago	MDW 10:10 → HOU 12:50WN 2783	5h 50m	86%	72%
Southwest Details →	ATL 08:55 → DAL 10:05WN 4394	1h 25m Dallas	DAL 11:30 → HOU 12:45WN 19	4h 50m	94%	72%
Tight connection: often missed
Southwest Details →	ATL 14:10 → DAL 15:20WN 194	1h 10m Dallas	DAL 16:30 → HOU 17:45WN 41	4h 35m	71%	47%
Southwest Details →	ATL 18:20 → DEN 19:40WN 3002	1h 05m Denver	DEN 20:45 → HOU 00:45 +1WN 2026	6h 55m	51%	28%
Southwest Details →	ATL 21:30 → BNA 21:40WN 3232	1h 05m Nashville	BNA 22:45 → HOU 00:50 +1WN 4474	4h 15m	44%	21%

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

DAL · 55m · leaves 06:30 7%

DFW · 52m · leaves 06:01 13%

MDW · 1h 15m · leaves 08:00 14%

Afternoon and evening

DEN · 1h 05m · leaves 18:20 49%

DFW · 1h 06m · leaves 20:01 56%

MDW · 1h 10m · leaves 19:35 60%

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.


Delta DL 5450 ATL 07:40 → CHS Southwest WN 356 CHS 12:00 → HOU Connection details →	3h 00m	6h 50m	100%	85%
Delta DL 2471 ATL 08:20 → MCI Southwest WN 2555 MCI 11:55 → HOU Connection details →	2h 24m	6h 45m	99%	81%
Frontier F9 1242 ATL 05:05 → MCO Southwest WN 3174 MCO 09:40 → HOU Connection details →	3h 00m	7h 05m	90%	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