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 70-minute layover misses 6% of the time at 7 am and 17% of the time at 6 pm.

Nonstops


United	JAX	IAH	2h 37m	87%	0.5%	1,287	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 Jacksonville). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	JAX 08:20 → ATL 09:36DL 2569	2h 54m Atlanta	ATL 12:30 → IAH 13:38DL 1572	6h 18m	98%	84%
United Details →	JAX 07:20 → ORD 09:12UA 1733	1h 13m Chicago	ORD 10:25 → IAH 13:23UA 2638	7h 03m	96%	83%
Delta Details →	JAX 05:30 → ATL 06:42DL 2722	3h 23m Atlanta	ATL 10:05 → IAH 11:18DL 1682	6h 48m	99%	79%
United Details →	JAX 09:20 → IAD 11:16UA 1434	1h 34m Dulles	IAD 12:50 → IAH 15:11UA 1535	6h 51m	96%	79%
United Details →	JAX 06:24 → EWR 08:48UA 2673	2h 05m Newark	EWR 10:53 → IAH 13:38UA 556	8h 14m	99%	74%
American Details →	JAX 06:00 → MIA 07:23AA 2711	1h 18m Miami	MIA 08:41 → IAH 10:29AA 1918	5h 32m	94%	74%
United Details →	JAX 08:09 → DEN 09:55UA 671	1h 39m Denver	DEN 11:34 → IAH 15:09UA 1599	8h 00m	95%	74%
Delta Details →	JAX 17:38 → ATL 18:58DL 2720	3h 46m Atlanta	ATL 22:44 → IAH 23:56DL 1601	7h 18m	98%	72%
Tight connection: often missed
American Details →	JAX 18:11 → CLT 19:45AA 1999	1h 00m Charlotte	CLT 20:45 → IAH 22:27AA 1840	5h 16m	55%	37%
Frontier Details →	JAX 18:29 → ATL 20:12F9 3083	1h 13m Atlanta	ATL 21:25 → IAH 22:48F9 4075	5h 19m	51%	31%
American Details →	JAX 17:58 → ORD 19:59AA 3317	1h 08m Chicago	ORD 21:07 → IAH 23:51AA 3144	6h 53m	56%	27%

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

ORD · 1h 13m · leaves 07:20 4%

MIA · 1h 18m · leaves 06:00 6%

FLL · 1h 18m · leaves 07:10 8%

Afternoon and evening

CLT · 1h 00m · leaves 18:11 45%

PHL · 1h 01m · leaves 16:35 45%

ATL · 1h 13m · leaves 18:29 49%

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.


American AA 3492 JAX 08:00 → MIA United UA 470 MIA 12:29 → IAH Connection details →	3h 09m	7h 23m	100%	86%
Delta DL 2450 JAX 07:00 → ATL United UA 425 ATL 11:37 → IAH Connection details →	3h 22m	6h 47m	99%	85%
Southwest WN 2155 JAX 06:20 → BNA United UA 5332 BNA 08:40 → IAH Connection details →	1h 50m	5h 42m	98%	85%

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