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

No clear winner: United’s PIT → IAH flights land within a few points of 87% on time whatever the hour.

Nonstops


United	PIT	IAH	3h 18m	87%	0.4%	1,037	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 Pittsburgh). Layovers up to 4 hours. Pick a connection for the details.


United Details →	PIT 08:36 → ORD 09:30UA 3461 · flown by Republic	3h 10m Chicago	ORD 12:40 → IAH 15:40UA 1448	8h 04m	99%	86%
United Details →	PIT 06:06 → IAD 07:18UA 3679 · flown by Republic	1h 22m Dulles	IAD 08:40 → IAH 10:59UA 1524	5h 53m	99%	86%
United Details →	PIT 07:25 → EWR 08:58UA 3673 · flown by Republic	3h 38m Newark	EWR 12:36 → IAH 15:34UA 2204	9h 09m	100%	85%
American Details →	PIT 05:03 → CLT 06:35AA 349	1h 07m Charlotte	CLT 07:42 → IAH 09:25AA 1930	5h 22m	96%	84%
Delta Details →	PIT 07:00 → ATL 08:49DL 1383	3h 41m Atlanta	ATL 12:30 → IAH 13:38DL 1572	7h 38m	99%	82%
United Details →	PIT 07:00 → ORD 07:48UA 2218	2h 37m Chicago	ORD 10:25 → IAH 13:23UA 2638	7h 23m	97%	81%
American Details →	PIT 09:50 → ORD 10:42AA 4480 · flown by Republic	2h 47m Chicago	ORD 13:29 → IAH 16:27AA 4426 · flown by Republic	7h 35m	100%	79%
Delta Details →	PIT 05:45 → ATL 07:25DL 1504	2h 40m Atlanta	ATL 10:05 → IAH 11:18DL 1682	6h 33m	99%	79%
Tight connection: often missed
Delta Details →	PIT 16:20 → MSP 17:40DL 5249 · flown by Endeavor	1h 00m Minneapolis	MSP 18:40 → IAH 21:37DL 2683	6h 17m	65%	47%
American Details →	PIT 17:05 → PHL 18:34AA 2312	1h 21m Philadelphia	PHL 19:55 → IAH 22:49AA 3021	6h 44m	74%	45%
JetBlue Details →	PIT 07:00 → BOS 08:38B6 1786	47m Boston	BOS 09:25 → IAH 12:32B6 2033	6h 33m	53%	36%

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 07:00 4%

CLT · 1h 07m · leaves 05:03 4%

ORD · 1h 00m · leaves 08:02 6%

Afternoon and evening

DFW · 1h 04m · leaves 19:36 33%

MSP · 1h 00m · leaves 16:20 35%

DCA · 57m · leaves 17:44 55%

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 4531 PIT 08:00 → RDU United UA 6296 RDU 12:45 → IAH Connection details →	3h 17m	7h 44m	100%	88%
American AA 384 PIT 06:38 → CLT United UA 6236 CLT 11:48 → IAH Connection details →	3h 38m	7h 56m	99%	87%
American AA 4625 PIT 08:02 → ORD United UA 1448 ORD 12:40 → IAH Connection details →	3h 40m	8h 38m	99%	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