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

No clear winner: American’s MDT → CLT flights land within a few points of 84% on time whatever the hour.

Nonstops


American	MDT	CLT	1h 49m	84%	1.2%	2,395	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Charlotte on time. Total trip = scheduled departure to arrival, layover included. Layovers up to 4 hours. Pick a connection for the details.


United Details →	MDT 06:30 → ORD 07:42UA 2684	2h 44m Chicago	ORD 10:26 → CLT 13:50UA 3450 · flown by Republic	7h 20m	97%	83%
American Details →	MDT 07:00 → BOS 08:31AA 4714 · flown by Republic	2h 49m Boston	BOS 11:20 → CLT 13:45AA 3161	6h 45m	99%	83%
Delta Details →	MDT 06:04 → ATL 08:05DL 1255	2h 05m Atlanta	ATL 10:10 → CLT 11:26DL 3190	5h 24m	98%	82%
American Details →	MDT 06:45 → PHL 07:40AA 6013 · flown by Piedmont	2h 50m Philadelphia	PHL 10:30 → CLT 12:23AA 1180	5h 38m	98%	81%
American Details →	MDT 10:36 → PHL 11:34AA 5829 · flown by Piedmont	2h 15m Philadelphia	PHL 13:49 → CLT 15:45AA 793	5h 09m	100%	80%
Delta Details →	MDT 06:15 → DTW 07:52DL 4787 · flown by Endeavor	2h 45m Detroit	DTW 10:37 → CLT 12:26DL 2684	6h 11m	98%	79%
United Details →	MDT 10:40 → ORD 11:56UA 4185 · flown by GoJet	2h 34m Chicago	ORD 14:30 → CLT 17:59UA 5757 · flown by SkyWest	7h 19m	97%	79%
American Details →	MDT 05:53 → ORD 07:14AA 4651 · flown by Republic	2h 16m Chicago	ORD 09:30 → CLT 12:38AA 2502	6h 45m	100%	79%
Tight connection: often missed
Delta Details →	MDT 17:34 → DTW 19:14DL 4891 · flown by Endeavor	51m Detroit	DTW 20:05 → CLT 21:55DL 2352	4h 21m	50%	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

IAD · 1h 15m · leaves 10:30 10%

ORD · 46m · leaves 05:53 10%

PHL · 1h 15m · leaves 08:15 12%

Afternoon and evening

DTW · 51m · leaves 17:34 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.


Delta DL 4787 MDT 06:15 → DTW American AA 1791 DTW 10:01 → CLT Connection details →	2h 09m	5h 41m	96%	87%
Delta DL 1255 MDT 06:04 → ATL American AA 5039 ATL 11:11 → CLT Connection details →	3h 06m	6h 32m	98%	77%
American AA 4714 MDT 07:00 → BOS Delta DL 5630 BOS 10:05 → CLT Connection details →	1h 34m	5h 33m	91%	76%

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