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

The nonstop is quickest: Southwest RDU → DAL (3h 05m), on time 3 times in 4. Delta via Atlanta (6h 04m) is more reliable, 86%, but takes 2h 59m longer.

Nonstops (seasonal or thin)


Southwest	RDU	DAL	3h 05m	76%	1.2%	422	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Dallas on time. Total trip = scheduled departure to arrival, layover included (Dallas is 1 h behind Raleigh/Durham). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	RDU 06:10 → BWI 07:15WN 3422	2h 20m Baltimore	BWI 09:35 → DAL 11:45WN 931	6h 35m	100%	88%
Delta Details →	RDU 05:20 → ATL 06:44DL 1552	3h 31m Atlanta	ATL 10:15 → DAL 11:24DL 1115	7h 04m	99%	87%
Southwest Details →	RDU 05:05 → HOU 06:50WN 4771	2h 40m Houston	HOU 09:30 → DAL 10:35WN 14	6h 30m	100%	85%
Delta Details →	RDU 08:50 → ATL 10:20DL 1530	3h 39m Atlanta	ATL 13:59 → DAL 15:03DL 512	7h 22m	99%	83%
Southwest Details →	RDU 10:40 → BNA 11:15WN 684	1h 05m Nashville	BNA 12:20 → DAL 14:15WN 5046	4h 35m	95%	81%
Delta Details →	RDU 11:15 → ATL 12:42DL 1699	3h 56m Atlanta	ATL 16:38 → DAL 17:55DL 2780	7h 40m	100%	76%
Delta Details →	RDU 17:19 → ATL 18:51DL 1550	2h 24m Atlanta	ATL 21:15 → DAL 22:34DL 1104	6h 15m	96%	75%
Southwest Details →	RDU 05:15 → DEN 06:50WN 4083	1h 55m Denver	DEN 08:45 → DAL 11:40WN 1360	7h 25m	98%	70%
Tight connection: often missed
Delta Details →	RDU 18:27 → ATL 20:01DL 2621	1h 14m Atlanta	ATL 21:15 → DAL 22:34DL 1104	5h 07m	63%	50%
Southwest Details →	RDU 17:40 → BWI 18:50WN 1063	1h 10m Baltimore	BWI 20:00 → DAL 22:10WN 693	5h 30m	73%	27%
Southwest Details →	RDU 19:50 → STL 20:55WN 3457	55m St Louis	STL 21:50 → DAL 23:30WN 3904	4h 40m	25%	7%

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

BNA · 1h 05m · leaves 10:40 5%

ATL · 1h 16m · leaves 07:30 6%

BWI · 1h 00m · leaves 06:10 7%

Afternoon and evening

BWI · 1h 10m · leaves 17:40 27%

ATL · 1h 14m · leaves 18:27 37%

STL · 55m · leaves 19:50 75%

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 5114 RDU 08:05 → BNA Southwest WN 5046 BNA 12:20 → DAL Connection details →	3h 29m	7h 10m	95%	79%
Frontier F9 4797 RDU 06:15 → ATL Delta DL 1115 ATL 10:15 → DAL Connection details →	2h 07m	6h 09m	90%	79%
Delta DL 1552 RDU 05:20 → ATL Southwest WN 4394 ATL 08:55 → DAL Connection details →	2h 11m	5h 45m	97%	74%

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