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 1 time in 10 at 8 am and barely half the time at 10 pm.

Nonstops


American	ORD	MDT	1h 57m	76%	3.1%	1,146	Flying now
United	ORD	MDT	2h 00m	72%	3.0%	1,488	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	ORD 06:30 → IAD 09:24UA 1689	3h 21m Dulles	IAD 12:45 → MDT 13:50UA 4372 · flown by CommuteAir	6h 20m	100%	83%
American Details →	ORD 05:07 → CLT 08:10AA 2842	3h 10m Charlotte	CLT 11:20 → MDT 13:12AA 6134 · flown by Piedmont	7h 05m	98%	83%
American Details →	ORD 05:00 → PHL 08:05AA 2970	55m Philadelphia	PHL 09:00 → MDT 10:08AA 6117 · flown by Piedmont	4h 08m	90%	80%
Delta Details →	ORD 05:30 → ATL 08:33DL 1264	2h 42m Atlanta	ATL 11:15 → MDT 13:17DL 4717 · flown by Endeavor	6h 47m	98%	78%
American Details →	ORD 06:36 → PHL 09:46AA 2115	3h 09m Philadelphia	PHL 12:55 → MDT 14:00AA 5963 · flown by Piedmont	6h 24m	96%	76%
American Details →	ORD 06:30 → CLT 09:37AA 1784	3h 35m Charlotte	CLT 13:12 → MDT 15:00AA 5832 · flown by Piedmont	7h 30m	98%	76%
United Details →	ORD 11:07 → IAD 14:12UA 1869	3h 23m Dulles	IAD 17:35 → MDT 18:44UA 4250 · flown by CommuteAir	6h 37m	99%	76%
Delta Details →	ORD 09:45 → ATL 12:51DL 1178	2h 50m Atlanta	ATL 15:41 → MDT 17:37DL 2857	6h 52m	99%	75%
Tight connection: often missed
American Details →	ORD 13:32 → PHL 16:49AA 1859	1h 01m Philadelphia	PHL 17:50 → MDT 18:57AA 5949 · flown by Piedmont	4h 25m	68%	50%
American Details →	ORD 14:59 → DFW 17:36AA 2257	1h 12m Dallas-Fort Worth	DFW 18:48 → MDT 22:59AA 2469	7h 00m	69%	35%
American Details →	ORD 18:47 → CLT 21:59AA 689	46m Charlotte	CLT 22:45 → MDT 00:25 +1AA 5217 · flown by PSA	4h 38m	50%	30%

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

PHL · 55m · leaves 05:00 10%

IAD · 53m · leaves 08:40 10%

ATL · 46m · leaves 05:30 18%

Afternoon and evening

PHL · 1h 01m · leaves 13:32 32%

IAD · 1h 04m · leaves 18:12 38%

CLT · 46m · leaves 18:47 50%

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.


United UA 2038 ORD 07:15 → PHL American AA 5963 PHL 12:55 → MDT Connection details →	2h 25m	5h 45m	97%	82%
United UA 5216 ORD 06:30 → CLT American AA 5832 CLT 13:12 → MDT Connection details →	3h 28m	7h 30m	100%	77%
United UA 530 ORD 09:07 → ATL Delta DL 2857 ATL 15:41 → MDT Connection details →	3h 19m	7h 30m	98%	75%

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