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 90-minute layover misses 3% of the time at 11 am and 16% of the time at 5 pm.

Nonstops


Delta	ATL	MDT	1h 52m	82%	2.3%	1,083	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 →	ATL 05:30 → IAD 07:20UA 641	1h 15m Dulles	IAD 08:35 → MDT 09:40UA 4986 · flown by CommuteAir	4h 10m	98%	83%
American Details →	ATL 07:05 → PHL 09:15AA 1428	3h 40m Philadelphia	PHL 12:55 → MDT 14:00AA 5963 · flown by Piedmont	6h 55m	98%	82%
United Details →	ATL 09:25 → IAD 11:15UA 632	1h 30m Dulles	IAD 12:45 → MDT 13:50UA 4372 · flown by CommuteAir	4h 25m	97%	80%
American Details →	ATL 05:00 → CLT 06:25AA 5507 · flown by PSA	1h 15m Charlotte	CLT 07:40 → MDT 09:27AA 5836 · flown by Piedmont	4h 27m	87%	80%
American Details →	ATL 06:24 → CLT 07:55AA 5176 · flown by PSA	3h 25m Charlotte	CLT 11:20 → MDT 13:12AA 6134 · flown by Piedmont	6h 48m	97%	79%
American Details →	ATL 06:00 → PHL 08:11AA 3270	49m Philadelphia	PHL 09:00 → MDT 10:08AA 6117 · flown by Piedmont	4h 08m	90%	79%
American Details →	ATL 12:25 → PHL 14:36AA 4338 · flown by Republic	3h 14m Philadelphia	PHL 17:50 → MDT 18:57AA 5949 · flown by Piedmont	6h 32m	100%	77%
Delta Details →	ATL 07:25 → DTW 09:20DL 1646	50m Detroit	DTW 10:10 → MDT 11:42DL 4065 · flown by SkyWest	4h 17m	82%	71%
Tight connection: often missed
American Details →	ATL 14:10 → PHL 16:25AA 621	1h 25m Philadelphia	PHL 17:50 → MDT 18:57AA 5949 · flown by Piedmont	4h 47m	72%	54%
American Details →	ATL 18:29 → PHL 20:40AA 1590	1h 15m Philadelphia	PHL 21:55 → MDT 23:10AA 5944 · flown by Piedmont	4h 41m	69%	48%
American Details →	ATL 16:16 → DFW 17:49AA 1356	59m Dallas-Fort Worth	DFW 18:48 → MDT 22:59AA 2469	6h 43m	41%	22%

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 05:30 2%

PHL · 49m · leaves 06:00 10%

CLT · 1h 15m · leaves 05:00 13%

Afternoon and evening

IAD · 56m · leaves 19:32 24%

PHL · 1h 15m · leaves 18:29 31%

DFW · 59m · leaves 16:16 59%

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 3144 ATL 07:38 → CLT American AA 6134 CLT 11:20 → MDT Connection details →	2h 27m	5h 34m	96%	82%
Delta DL 1100 ATL 07:30 → PHL American AA 5963 PHL 12:55 → MDT Connection details →	3h 21m	6h 30m	99%	80%
Delta DL 1324 ATL 07:43 → IAD United UA 4372 IAD 12:45 → MDT Connection details →	3h 19m	6h 07m	98%	79%

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