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

No clear winner: airlines and hours on this route all land within a few points of 82% on time.

Nonstops (seasonal or thin)


American	CVG	MIA	2h 44m	83%	0.7%	870	Flying now
Frontier	CVG	MIA	2h 40m	73%	1.8%	112	Not flying now
Delta	CVG	MIA	–	0%few flights	0.0%	1	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


American Details →	CVG 07:10 → BOS 09:25AA 3807 · flown by Envoy	1h 31m Boston	BOS 10:56 → MIA 14:30AA 815	7h 20m	98%	86%
Delta Details →	CVG 06:00 → MSP 06:57DL 2752	1h 58m Minneapolis	MSP 08:55 → MIA 13:37DL 2129	7h 37m	98%	83%
American Details →	CVG 05:08 → CLT 06:35AA 429	2h 50m Charlotte	CLT 09:25 → MIA 11:37AA 1436	6h 29m	97%	83%
Delta Details →	CVG 06:19 → DTW 07:36DL 5307 · flown by Endeavor	1h 46m Detroit	DTW 09:22 → MIA 12:30DL 1468	6h 11m	98%	82%
Delta Details →	CVG 05:34 → ATL 07:04DL 2441	1h 51m Atlanta	ATL 08:55 → MIA 10:57DL 1510	5h 22m	99%	81%
American Details →	CVG 07:42 → CLT 09:16AA 2967	1h 45m Charlotte	CLT 11:01 → MIA 13:11AA 969	5h 28m	97%	81%
American Details →	CVG 06:00 → ORD 06:32AA 4094 · flown by Envoy	3h 32m Chicago	ORD 10:04 → MIA 14:16AA 1474	8h 17m	99%	80%
Delta Details →	CVG 07:05 → ATL 08:39DL 2302	2h 21m Atlanta	ATL 11:00 → MIA 13:04DL 1332	5h 59m	99%	80%
Tight connection: often missed
Delta Details →	CVG 17:48 → ATL 19:30DL 1008	46m Atlanta	ATL 20:16 → MIA 22:17DL 1588	4h 29m	66%	43%
Delta Details →	CVG 14:32 → ATL 16:09DL 1140	1h 36m Atlanta	ATL 17:45 → MIA 19:56DL 1631	5h 24m	72%	35%
American Details →	CVG 13:58 → DFW 15:28AA 3307	1h 06m Dallas-Fort Worth	DFW 16:34 → MIA 20:35AA 3308	6h 41m	61%	33%

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

ATL · 1h 19m · leaves 10:05 5%

BWI · 1h 07m · leaves 05:35 10%

IAD · 1h 11m · leaves 06:00 10%

Afternoon and evening

CLT · 1h 08m · leaves 17:29 21%

ATL · 46m · leaves 17:48 34%

DFW · 1h 06m · leaves 13:58 39%

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.


Southwest WN 3349 CVG 07:00 → BNA American AA 1521 BNA 10:39 → MIA Connection details →	3h 29m	7h 00m	100%	87%
Delta DL 5257 CVG 14:15 → DTW American AA 3358 DTW 18:57 → MIA Connection details →	3h 24m	7h 55m	94%	87%
United UA 5618 CVG 06:00 → ORD American AA 1474 ORD 10:04 → MIA Connection details →	3h 28m	8h 17m	100%	82%

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