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

No clear winner: airlines and hours on this route all land within a few points of 82% on time.

Nonstops (seasonal or thin)


American	ORD	HHH	2h 33m	86%	1.2%	82	Flying now
United	ORD	HHH	2h 36m	80%	0.8%	132	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


American Details →	ORD 05:07 → CLT 08:10AA 2842	1h 35m Charlotte	CLT 09:45 → HHH 11:10AA 3563 · flown by Envoy	4h 58m	95%	91%
American Details →	ORD 06:30 → CLT 09:37AA 1784	1h 23m Charlotte	CLT 11:00 → HHH 12:24AA 3582 · flown by Envoy	4h 50m	92%	84%
United + Deltatwo ticketsDetails →	ORD 07:12 → ATL 10:27UA 425	3h 44m Atlanta	ATL 14:11 → HHH 15:32DL 5830 · flown by Republic	7h 20m	100%	80%
United Details →	ORD 06:00 → EWR 09:12UA 2295	1h 25m Newark	EWR 10:37 → HHH 12:52UA 3676 · flown by Republic	5h 52m	95%	78%
United + Americantwo ticketsDetails →	ORD 06:30 → CLT 09:44UA 5216 · flown by SkyWest	3h 16m Charlotte	CLT 13:00 → HHH 14:16AA 3562 · flown by Envoy	6h 46m	100%	72%
American Details →	ORD 09:30 → CLT 12:38AA 2502	2h 35m Charlotte	CLT 15:13 → HHH 16:32AA 3560 · flown by Envoy	5h 59m	98%	66%
Tight connection: often missed
American Details →	ORD 09:00 → CLT 12:12AA 2530	48m Charlotte	CLT 13:00 → HHH 14:16AA 3562 · flown by Envoy	4h 16m	71%	52%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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