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 CVG → PHL flights land within a few points of 82% on time whatever the hour.

Nonstops


American	CVG	PHL	1h 49m	82%	3.0%	1,510	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.


Southwest Details →	CVG 08:00 → MDW 08:05WN 3016	55m Chicago	MDW 09:00 → PHL 11:55WN 4901	3h 55m	88%	85%
Delta Details →	CVG 06:19 → DTW 07:36DL 5307 · flown by Endeavor	2h 34m Detroit	DTW 10:10 → PHL 11:46DL 2331	5h 30m	98%	84%
Delta Details →	CVG 05:34 → ATL 07:04DL 2441	1h 51m Atlanta	ATL 08:55 → PHL 10:57DL 2270	5h 27m	99%	83%
Delta Details →	CVG 07:05 → ATL 08:39DL 2302	2h 42m Atlanta	ATL 11:21 → PHL 13:24DL 2279	6h 21m	99%	83%
Delta Details →	CVG 06:00 → BOS 08:22DL 5790 · flown by Republic	2h 28m Boston	BOS 10:50 → PHL 12:28DL 5805 · flown by Republic	6h 28m	99%	82%
American Details →	CVG 05:08 → CLT 06:35AA 429	1h 20m Charlotte	CLT 07:55 → PHL 09:41AA 3046	4h 33m	94%	82%
American Details →	CVG 07:10 → BOS 09:25AA 3807 · flown by Envoy	3h 13m Boston	BOS 12:38 → PHL 14:16AA 3043	7h 06m	100%	81%
United Details →	CVG 06:00 → ORD 06:36UA 5618 · flown by SkyWest	2h 30m Chicago	ORD 09:06 → PHL 12:25UA 2752	6h 25m	100%	78%
Tight connection: often missed
American Details →	CVG 18:25 → MIA 21:04AA 3487 · flown by Envoy	1h 00m Miami	MIA 22:04 → PHL 00:55 +1AA 2188	6h 30m	74%	55%
Delta Details →	CVG 16:26 → ATL 18:00DL 3169	1h 15m Atlanta	ATL 19:15 → PHL 21:19DL 2065	4h 53m	72%	45%
Delta Details →	CVG 17:20 → BOS 19:45DL 5789 · flown by Republic	55m Boston	BOS 20:40 → PHL 22:22DL 5610 · flown by Republic	5h 02m	64%	32%

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

CLT · 1h 20m · leaves 05:08 6%

IAD · 1h 01m · leaves 06:00 10%

MDW · 55m · leaves 08:00 12%

Afternoon and evening

MIA · 1h 00m · leaves 18:25 26%

ATL · 1h 15m · leaves 16:26 28%

BOS · 55m · leaves 17:20 36%

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 2302 CVG 07:05 → ATL American AA 4338 ATL 12:25 → PHL Connection details →	3h 46m	7h 31m	99%	93%
Southwest WN 3349 CVG 07:00 → BNA American AA 5576 BNA 08:57 → PHL Connection details →	1h 47m	5h 06m	96%	84%
Delta DL 2441 CVG 05:34 → ATL American AA 5037 ATL 09:50 → PHL Connection details →	2h 46m	6h 25m	99%	81%

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