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 12% of the time at 9 am and 1 time in 4 at 7 pm.

Nonstops (seasonal or thin)


Southwest	DAL	RDU	2h 30m	64%	1.7%	421	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 (Raleigh/Durham is 1 h ahead of Dallas). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	DAL 06:00 → BWI 09:55WN 1280	1h 40m Baltimore	BWI 11:35 → RDU 12:45WN 4442	5h 45m	98%	86%
Delta Details →	DAL 06:05 → ATL 09:15DL 516	1h 59m Atlanta	ATL 11:14 → RDU 12:44DL 1488	5h 39m	96%	84%
Delta Details →	DAL 10:09 → ATL 13:20DL 441	1h 25m Atlanta	ATL 14:45 → RDU 16:14DL 1550	5h 05m	94%	76%
Southwest Details →	DAL 06:00 → DEN 07:00WN 1296	3h 00m Denver	DEN 10:00 → RDU 15:25WN 1691	8h 25m	100%	76%
Delta Details →	DAL 12:19 → ATL 15:31DL 1115	3h 47m Atlanta	ATL 19:18 → RDU 20:47DL 1518	7h 28m	98%	71%
Southwest Details →	DAL 07:20 → STL 09:05WN 274	50m St Louis	STL 09:55 → RDU 12:45WN 297	4h 25m	80%	71%
Southwest Details →	DAL 08:30 → MDW 10:45WN 1356	2h 35m Chicago	MDW 13:20 → RDU 16:15WN 4462	6h 45m	100%	71%
Southwest Details →	DAL 18:00 → AUS 19:00WN 1269	2h 05m Austin	AUS 21:05 → RDU 01:02 +1WN 382	6h 03m	85%	66%
Tight connection: often missed
Delta Details →	DAL 15:59 → ATL 19:14DL 512	1h 04m Atlanta	ATL 20:18 → RDU 21:48DL 3244	4h 49m	74%	54%
Southwest Details →	DAL 17:55 → BNA 19:45WN 277	50m Nashville	BNA 20:35 → RDU 23:10WN 4431	4h 15m	23%	12%

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 · 55m · leaves 06:05 12%

BNA · 1h 20m · leaves 07:05 14%

Afternoon and evening

ATL · 1h 04m · leaves 15:59 26%

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 1296 DAL 06:00 → DEN United UA 2269 DEN 09:49 → RDU Connection details →	2h 49m	8h 16m	100%	89%
Southwest WN 1261 DAL 06:00 → ATL Delta DL 1488 ATL 11:14 → RDU Connection details →	2h 09m	5h 44m	98%	89%
Southwest WN 1519 DAL 07:05 → BNA American AA 4639 BNA 12:00 → RDU Connection details →	3h 10m	6h 38m	96%	85%

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