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

No clear winner: Delta’s CVG → RDU flights land within a few points of 83% on time whatever the hour.

Nonstops (seasonal or thin)


Delta	CVG	RDU	1h 31m	83%	0.6%	309	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

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


Delta Details →	CVG 05:34 → ATL 07:04DL 2441	1h 39m Atlanta	ATL 08:43 → RDU 10:10DL 1699	4h 36m	99%	91%
Southwest Details →	CVG 05:35 → BWI 07:05WN 1246	1h 05m Baltimore	BWI 08:10 → RDU 09:30WN 1067	3h 55m	89%	89%
Delta Details →	CVG 07:05 → ATL 08:39DL 2302	2h 35m Atlanta	ATL 11:14 → RDU 12:44DL 1488	5h 39m	99%	89%
United + Americantwo ticketsDetails →	CVG 06:00 → ORD 06:36UA 5618 · flown by SkyWest	2h 53m Chicago	ORD 09:29 → RDU 12:48AA 4756 · flown by Republic	6h 48m	100%	89%
United Details →	CVG 06:00 → EWR 08:07UA 3423 · flown by Republic	1h 53m Newark	EWR 10:00 → RDU 11:52UA 3631 · flown by Republic	5h 52m	99%	87%
Delta Details →	CVG 08:15 → ATL 09:45DL 3076	3h 17m Atlanta	ATL 13:02 → RDU 14:29DL 2026	6h 14m	99%	86%
Delta Details →	CVG 06:19 → DTW 07:36DL 5307 · flown by Endeavor	2h 39m Detroit	DTW 10:15 → RDU 11:57DL 2164	5h 41m	98%	85%
Delta + Americantwo ticketsDetails →	CVG 07:00 → DCA 08:33DL 5229 · flown by Endeavor	2h 51m Washington	DCA 11:24 → RDU 12:44AA 4700 · flown by Republic	5h 44m	97%	84%
Tight connection: often missed
United Details →	CVG 08:00 → DEN 09:02UA 1666	47m Denver	DEN 09:49 → RDU 15:16UA 2269	7h 16m	74%	66%
Delta Details →	CVG 17:48 → ATL 19:30DL 1008	48m Atlanta	ATL 20:18 → RDU 21:48DL 3244	4h 00m	69%	51%
American Details →	CVG 11:12 → DCA 12:59AA 5145 · flown by PSA	1h 01m Washington	DCA 14:00 → RDU 15:30AA 5367 · flown by PSA	4h 16m	61%	28%

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

EWR · 1h 01m · leaves 06:30 10%

BWI · 1h 05m · leaves 05:35 11%

LGA · 1h 20m · leaves 08:00 12%

Afternoon and evening

CLT · 1h 04m · leaves 13:57 28%

ATL · 1h 15m · leaves 14:32 36%

ORD · 57m · leaves 19:07 41%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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