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 7% of the time at 12 pm and almost half the time at 5 pm.

Nonstops


United	RDU	ORD	2h 28m	78%	1.6%	1,528	Flying now
American	RDU	ORD	2h 34m	74%	3.8%	2,012	Flying now
Frontier	RDU	ORD	2h 25m	58%	5.3%	114	Not 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 Raleigh/Durham). Layovers up to 4 hours. Pick a connection for the details.


United Details →	RDU 06:00 → IAD 07:11UA 1789	3h 20m Dulles	IAD 10:31 → ORD 11:53UA 1252	6h 53m	100%	90%
American Details →	RDU 06:41 → CLT 07:49AA 2420	3h 12m Charlotte	CLT 11:01 → ORD 12:19AA 2908	6h 38m	100%	88%
Delta Details →	RDU 05:33 → DTW 07:18DL 1388	2h 57m Detroit	DTW 10:15 → ORD 10:50DL 3673 · flown by SkyWest	6h 17m	98%	87%
American Details →	RDU 07:45 → PIT 09:12AA 4532 · flown by Republic	2h 31m Pittsburgh	PIT 11:43 → ORD 12:38AA 4478 · flown by Republic	5h 53m	99%	86%
United Details →	RDU 06:30 → IAH 08:21UA 2074	1h 14m Houston	IAH 09:35 → ORD 12:29UA 2124	6h 59m	96%	82%
American Details →	RDU 05:01 → CLT 06:00AA 1903	1h 46m Charlotte	CLT 07:46 → ORD 09:02AA 2843	5h 01m	98%	82%
American Details →	RDU 05:01 → MIA 07:12AA 1088	1h 16m Miami	MIA 08:28 → ORD 10:59AA 1431	6h 58m	94%	81%
American Details →	RDU 05:15 → JFK 07:12AA 4805 · flown by Republic	2h 59m New York	JFK 10:11 → ORD 12:05AA 4365 · flown by Republic	7h 50m	99%	81%
Tight connection: often missed
American Details →	RDU 16:00 → BNA 16:48AA 4489 · flown by Republic	53m Nashville	BNA 17:41 → ORD 19:55AA 1570	4h 55m	68%	34%
American Details →	RDU 17:30 → MIA 19:49AA 2406	1h 05m Miami	MIA 20:54 → ORD 23:30AA 1881	6h 58m	59%	30%
American Details →	RDU 16:15 → CLT 17:34AA 2402	52m Charlotte	CLT 18:26 → ORD 19:51AA 2488	4h 36m	60%	28%

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 14m · leaves 06:20 4%

IAD · 1h 04m · leaves 06:00 4%

IAH · 1h 14m · leaves 06:30 6%

Afternoon and evening

PHL · 50m · leaves 15:15 41%

MIA · 1h 05m · leaves 17:30 41%

BOS · 46m · leaves 14:34 48%

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 3430 RDU 07:15 → MCO American AA 2067 MCO 11:38 → ORD Connection details →	2h 43m	7h 30m	100%	91%
Delta DL 1388 RDU 05:33 → DTW American AA 4103 DTW 10:33 → ORD Connection details →	3h 15m	6h 35m	98%	91%
Southwest WN 3422 RDU 06:10 → BWI United UA 704 BWI 10:32 → ORD Connection details →	3h 17m	6h 38m	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