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 3% of the time at 8 am and 28% of the time at 6 pm.

Nonstops


United	PIT	ORD	1h 50m	81%	2.3%	2,168	Flying now
American	PIT	ORD	1h 53m	78%	2.2%	1,856	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	PIT 06:06 → IAD 07:18UA 3679 · flown by Republic	3h 13m Dulles	IAD 10:31 → ORD 11:53UA 1252	6h 47m	100%	90%
American Details →	PIT 06:38 → CLT 08:10AA 384	2h 51m Charlotte	CLT 11:01 → ORD 12:19AA 2908	6h 41m	99%	86%
United Details →	PIT 06:15 → IAH 08:18UA 1859	1h 17m Houston	IAH 09:35 → ORD 12:29UA 2124	7h 14m	98%	83%
Delta Details →	PIT 06:30 → DTW 07:44DL 5319 · flown by Endeavor	2h 31m Detroit	DTW 10:15 → ORD 10:50DL 3673 · flown by SkyWest	5h 20m	94%	79%
American Details →	PIT 05:03 → CLT 06:35AA 349	1h 11m Charlotte	CLT 07:46 → ORD 09:02AA 2843	4h 59m	96%	79%
United Details →	PIT 08:30 → DEN 09:59UA 1765	1h 16m Denver	DEN 11:15 → ORD 14:55UA 2865	7h 25m	96%	78%
United Details →	PIT 10:30 → IAD 11:42UA 6184 · flown by Mesa	1h 33m Dulles	IAD 13:15 → ORD 14:29UA 2331	4h 59m	97%	77%
United Details →	PIT 07:25 → EWR 08:58UA 3673 · flown by Republic	1h 26m Newark	EWR 10:24 → ORD 12:06UA 1525	5h 41m	100%	76%
Tight connection: often missed
Delta Details →	PIT 11:23 → MSP 12:36DL 845	50m Minneapolis	MSP 13:26 → ORD 15:05DL 1533	4h 42m	72%	50%
Delta Details →	PIT 17:46 → DTW 19:04DL 5766 · flown by Republic	56m Detroit	DTW 20:00 → ORD 20:31DL 1665	3h 45m	66%	40%
American Details →	PIT 20:01 → CLT 21:50AA 5602 · flown by PSA	49m Charlotte	CLT 22:39 → ORD 00:01 +1AA 3014	5h 00m	58%	32%

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

IAH · 1h 17m · leaves 06:15 2%

LGA · 1h 11m · leaves 06:05 3%

DEN · 1h 16m · leaves 08:30 4%

Afternoon and evening

DTW · 56m · leaves 17:46 34%

CLT · 49m · leaves 20:01 42%

DCA · 1h 07m · leaves 17:44 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.


Southwest WN 3374 PIT 05:10 → MCO United UA 2683 MCO 09:40 → ORD Connection details →	2h 10m	7h 38m	98%	92%
Southwest WN 4417 PIT 05:50 → BWI United UA 704 BWI 10:32 → ORD Connection details →	3h 32m	6h 58m	100%	90%
American AA 4529 PIT 06:14 → DCA United UA 2201 DCA 10:30 → ORD Connection details →	2h 56m	6h 34m	100%	90%

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