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

Connect in the morning. The same one-hour layover misses 13% of the time at 9 am and 38% of the time at 6 pm.

Nonstops (seasonal or thin)


Delta	JFK	IAH	4h 05m	84%	3.7%	269	Flying now
JetBlue	JFK	IAH	3h 50m	58%	3.5%	144	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 New York). Layovers up to 4 hours. Pick a connection for the details.


American Details →	JFK 07:57 → ORD 10:05AA 4450 · flown by Republic	3h 24m Chicago	ORD 13:29 → IAH 16:27AA 4426 · flown by Republic	9h 28m	98%	79%
Delta Details →	JFK 06:00 → ATL 08:24DL 2286	1h 41m Atlanta	ATL 10:05 → IAH 11:18DL 1682	6h 18m	96%	77%
Delta Details →	JFK 11:10 → SLC 14:18DL 917	3h 27m Salt Lake City	SLC 17:45 → IAH 21:52DL 2514	11h 42m	99%	77%
Delta Details →	JFK 13:40 → LAX 16:38DL 747	1h 57m Los Angeles	LAX 18:35 → IAH 23:59DL 1287	11h 19m	93%	76%
Delta Details →	JFK 08:40 → ATL 11:14DL 2227	1h 16m Atlanta	ATL 12:30 → IAH 13:38DL 1572	5h 58m	91%	76%
American Details →	JFK 09:00 → LAX 11:58AA 1	2h 13m Los Angeles	LAX 14:11 → IAH 19:43AA 5005 · flown by SkyWest	11h 43m	95%	71%
American Details →	JFK 07:02 → PHX 09:18AA 2369	3h 00m Phoenix	PHX 12:18 → IAH 16:59AA 640	10h 57m	97%	70%
Delta Details →	JFK 07:15 → DTW 09:25DL 5080 · flown by Endeavor	3h 05m Detroit	DTW 12:30 → IAH 14:30DL 1864	8h 15m	98%	70%
Tight connection: often missed
JetBlue Details →	JFK 09:30 → FLL 12:46B6 1801	59m Fort Lauderdale	FLL 13:45 → IAH 15:47B6 2379	7h 17m	64%	43%
American Details →	JFK 15:30 → CLT 17:44AA 1294	57m Charlotte	CLT 18:41 → IAH 20:33AA 2935	6h 03m	56%	34%
American Details →	JFK 14:42 → DFW 17:44AA 1953	52m Dallas-Fort Worth	DFW 18:36 → IAH 19:54AA 1392	6h 12m	62%	29%

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

ATL · 1h 16m · leaves 08:40 9%

MSP · 58m · leaves 07:15 13%

FLL · 55m · leaves 05:50 20%

Afternoon and evening

MIA · 1h 16m · leaves 17:25 17%

DFW · 52m · leaves 14:42 38%

CLT · 57m · leaves 15:30 44%

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 4376 JFK 08:24 → BOS United UA 1976 BOS 13:37 → IAH Connection details →	3h 49m	9h 33m	99%	88%
American AA 2643 JFK 05:59 → CLT United UA 6236 CLT 11:48 → IAH Connection details →	3h 51m	8h 35m	98%	87%
Delta DL 2286 JFK 06:00 → ATL United UA 425 ATL 11:37 → IAH Connection details →	3h 13m	7h 47m	98%	86%

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