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 → PHL flights land within a few points of 85% on time whatever the hour.

Nonstops


American	MDT	PHL	58m	85%	1.4%	1,664	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


American Details →	MDT 07:00 → BOS 08:31AA 4714 · flown by Republic	1h 06m Boston	BOS 09:37 → PHL 11:12AA 3225	4h 12m	97%	84%
Delta Details →	MDT 06:15 → DTW 07:52DL 4787 · flown by Endeavor	2h 18m Detroit	DTW 10:10 → PHL 11:46DL 2331	5h 34m	98%	83%
American Details →	MDT 05:00 → CLT 06:44AA 6100 · flown by Piedmont	1h 11m Charlotte	CLT 07:55 → PHL 09:41AA 3046	4h 41m	93%	80%
United Details →	MDT 10:30 → IAD 11:28UA 4974 · flown by CommuteAir	1h 27m Dulles	IAD 12:55 → PHL 14:10UA 3541 · flown by Republic	3h 40m	92%	78%
American Details →	MDT 05:53 → ORD 07:14AA 4651 · flown by Republic	1h 15m Chicago	ORD 08:29 → PHL 11:41AA 471	5h 48m	100%	77%
American Details →	MDT 06:31 → CLT 08:20AA 5833 · flown by Piedmont	2h 40m Charlotte	CLT 11:00 → PHL 12:43AA 2498	6h 12m	97%	76%
United Details →	MDT 06:15 → IAD 07:13UA 4244 · flown by CommuteAir	1h 22m Dulles	IAD 08:35 → PHL 09:45UA 4015 · flown by Mesa	3h 30m	93%	74%
Delta Details →	MDT 18:22 → ATL 20:34DL 2857	2h 21m Atlanta	ATL 22:55 → PHL 00:59 +1DL 2642	6h 38m	97%	71%
Tight connection: often missed
American Details →	MDT 15:30 → CLT 17:18AA 5832 · flown by Piedmont	54m Charlotte	CLT 18:12 → PHL 20:12AA 2879	4h 42m	56%	40%
American Details →	MDT 19:15 → ORD 20:42AA 3243	1h 00m Chicago	ORD 21:42 → PHL 00:55 +1AA 490	5h 41m	62%	29%

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

ORD · 1h 15m · leaves 05:53 0%

BOS · 1h 06m · leaves 07:00 3%

CLT · 1h 11m · leaves 05:00 7%

Afternoon and evening

IAD · 1h 13m · leaves 19:59 18%

ORD · 1h 00m · leaves 19:15 38%

CLT · 54m · leaves 15:30 44%

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.


American AA 4714 MDT 07:00 → BOS Delta DL 5805 BOS 10:50 → PHL Connection details →	2h 19m	5h 28m	98%	84%
American AA 4651 MDT 05:53 → ORD United UA 2752 ORD 09:06 → PHL Connection details →	1h 52m	6h 32m	100%	76%
Delta DL 4787 MDT 06:15 → DTW American AA 5610 DTW 10:53 → PHL Connection details →	3h 01m	6h 22m	98%	73%

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