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 PHL → MDT flights land within a few points of 83% on time whatever the hour.

Nonstops


American	PHL	MDT	1h 01m	83%	1.8%	1,664	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. Layovers up to 4 hours. Pick a connection for the details.


United Details →	PHL 06:10 → IAD 07:19UA 3693 · flown by Republic	1h 16m Dulles	IAD 08:35 → MDT 09:40UA 4986 · flown by CommuteAir	3h 30m	97%	82%
Delta Details →	PHL 05:15 → ATL 07:22DL 1269	1h 57m Atlanta	ATL 09:19 → MDT 11:11DL 1248	5h 56m	97%	81%
Delta Details →	PHL 06:10 → DTW 07:50DL 1540	2h 20m Detroit	DTW 10:10 → MDT 11:42DL 4065 · flown by SkyWest	5h 32m	96%	81%
American Details →	PHL 05:15 → ORD 06:38AA 1652	1h 27m Chicago	ORD 08:05 → MDT 11:11AA 4746 · flown by Republic	5h 56m	90%	81%
Delta Details →	PHL 06:25 → ATL 08:32DL 1152	2h 43m Atlanta	ATL 11:15 → MDT 13:17DL 4717 · flown by Endeavor	6h 52m	99%	78%
American Details →	PHL 06:00 → CLT 07:53AA 3139	1h 52m Charlotte	CLT 09:45 → MDT 11:37AA 5835 · flown by Piedmont	5h 37m	99%	77%
Delta Details →	PHL 10:40 → ATL 12:54DL 1100	2h 47m Atlanta	ATL 15:41 → MDT 17:37DL 2857	6h 57m	99%	75%
American Details →	PHL 08:20 → CLT 10:18AA 1494	2h 54m Charlotte	CLT 13:12 → MDT 15:00AA 5832 · flown by Piedmont	6h 40m	96%	73%
Tight connection: often missed
United Details →	PHL 11:38 → ORD 13:06UA 2207	51m Chicago	ORD 13:57 → MDT 16:56UA 1746	5h 18m	66%	45%
American Details →	PHL 19:35 → CLT 21:38AA 1661	1h 07m Charlotte	CLT 22:45 → MDT 00:25 +1AA 5217 · flown by PSA	4h 50m	73%	44%
American Details →	PHL 15:50 → CLT 17:53AA 2573	46m Charlotte	CLT 18:39 → MDT 20:28AA 5990 · flown by Piedmont	4h 38m	70%	41%

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 16m · leaves 06:10 3%

ATL · 1h 03m · leaves 08:05 12%

CLT · 1h 02m · leaves 08:20 13%

Afternoon and evening

CLT · 46m · leaves 15:50 30%

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.


Frontier F9 2387 PHL 08:00 → CLT American AA 5832 CLT 13:12 → MDT Connection details →	3h 16m	7h 00m	94%	73%
American AA 5037 PHL 07:00 → ATL Delta DL 4717 ATL 11:15 → MDT Connection details →	1h 56m	6h 17m	89%	69%
Frontier F9 2021 PHL 06:26 → DTW Delta DL 4065 DTW 10:10 → MDT Connection details →	1h 53m	5h 16m	77%	64%

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