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 one-hour layover misses 13% of the time at 9 am and 27% of the time at 4 pm.

Nonstops


Delta	DTW	RDU	1h 45m	84%	1.6%	1,352	Flying now
Spirit	DTW	RDU	1h 45m	87%	0.0%	53	Not flying now
Frontier	DTW	RDU	1h 45m	81%	3.6%	111	Not flying now

Best connections, one ticket

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 →	DTW 06:17 → ATL 08:12DL 1611	3h 02m Atlanta	ATL 11:14 → RDU 12:44DL 1488	6h 27m	98%	88%
Southwest Details →	DTW 07:00 → STL 07:35WN 1783	2h 20m St Louis	STL 09:55 → RDU 12:45WN 297	5h 45m	98%	87%
Delta Details →	DTW 05:17 → ATL 07:10DL 2375	1h 33m Atlanta	ATL 08:43 → RDU 10:10DL 1699	4h 53m	94%	86%
Delta Details →	DTW 07:25 → ATL 09:26DL 965	3h 36m Atlanta	ATL 13:02 → RDU 14:29DL 2026	7h 04m	99%	86%
United Details →	DTW 06:00 → EWR 07:45UA 3652 · flown by Republic	2h 15m Newark	EWR 10:00 → RDU 11:52UA 3631 · flown by Republic	5h 52m	97%	85%
American Details →	DTW 07:00 → CLT 08:54AA 1439	2h 10m Charlotte	CLT 11:04 → RDU 12:02AA 2363	5h 02m	97%	85%
Delta Details →	DTW 07:01 → MSP 07:55DL 1746	2h 26m Minneapolis	MSP 10:21 → RDU 13:53DL 2521	6h 50m	97%	83%
United Details →	DTW 05:30 → ORD 05:53UA 3483 · flown by Republic	3h 17m Chicago	ORD 09:10 → RDU 12:33UA 5326 · flown by SkyWest	7h 03m	100%	82%
Tight connection: often missed
American Details →	DTW 06:45 → ORD 07:30AA 6465 · flown by SkyWest	48m Chicago	ORD 08:18 → RDU 11:38AA 4354 · flown by Republic	4h 51m	66%	57%
Delta Details →	DTW 10:35 → MCO 13:11DL 1747	59m Orlando	MCO 14:10 → RDU 16:08DL 1312	5h 33m	74%	55%
Delta Details →	DTW 14:01 → BOS 16:10DL 1171	1h 05m Boston	BOS 17:15 → RDU 19:37DL 2782	5h 28m	73%	52%

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 00m · leaves 10:13 7%

BOS · 53m · leaves 07:05 13%

BWI · 50m · leaves 05:50 19%

Afternoon and evening

CLT · 1h 02m · leaves 19:58 26%

BOS · 1h 05m · leaves 14:01 27%

DCA · 1h 13m · leaves 14:59 30%

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.


United UA 3483 DTW 05:30 → ORD American AA 4756 ORD 09:29 → RDU Connection details →	3h 36m	7h 18m	100%	84%
Delta DL 2341 DTW 07:10 → BWI Southwest WN 4442 BWI 11:35 → RDU Connection details →	2h 51m	5h 35m	98%	84%
Frontier F9 1263 DTW 06:10 → ATL Delta DL 1488 ATL 11:14 → RDU Connection details →	2h 43m	6h 34m	94%	84%

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