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 6% of the time at 7 am and 1 time in 5 at 6 pm.

Nonstops (seasonal or thin)


Delta	RDU	SLC	4h 40m	84%	1.3%	383	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Salt Lake City on time. Total trip = scheduled departure to arrival, layover included (Salt Lake City is 2 h behind Raleigh/Durham). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	RDU 05:20 → ATL 06:44DL 1552	3h 21m Atlanta	ATL 10:05 → SLC 12:10DL 387	8h 50m	99%	88%
Southwest + Deltatwo ticketsDetails →	RDU 13:15 → PHX 14:45WN 1795	2h 20m Phoenix	PHX 17:05 → SLC 19:43DL 1738	8h 28m	100%	88%
American + Deltatwo ticketsDetails →	RDU 10:00 → BNA 10:47AA 4344 · flown by Republic	3h 14m Nashville	BNA 14:01 → SLC 16:37DL 1593	8h 37m	100%	87%
American + Unitedtwo ticketsDetails →	RDU 07:00 → LAX 09:32AA 1943	3h 23m Los Angeles	LAX 12:55 → SLC 15:48UA 5371 · flown by SkyWest	10h 48m	99%	87%
Delta Details →	RDU 07:30 → ATL 08:59DL 2478	2h 55m Atlanta	ATL 11:54 → SLC 13:50DL 663	8h 20m	98%	85%
United + Frontiertwo ticketsDetails →	RDU 08:30 → DEN 10:17UA 2383	3h 01m Denver	DEN 13:18 → SLC 14:55F9 3981	8h 25m	98%	84%
Delta Details →	RDU 08:50 → ATL 10:20DL 1530	3h 35m Atlanta	ATL 13:55 → SLC 15:51DL 423	9h 03m	99%	84%
Delta Details →	RDU 14:48 → MSP 16:41DL 2521	3h 39m Minneapolis	MSP 20:20 → SLC 22:15DL 1051	9h 27m	98%	83%
Tight connection: often missed
American Details →	RDU 16:15 → CLT 17:34AA 2402	1h 10m Charlotte	CLT 18:44 → SLC 21:16AA 2611	6h 57m	68%	45%
United Details →	RDU 17:12 → ORD 18:42UA 630	1h 28m Chicago	ORD 20:10 → SLC 22:48UA 1710	7h 36m	67%	37%
American Details →	RDU 17:30 → MIA 19:49AA 2406	53m Miami	MIA 20:42 → SLC 23:39AA 1134	8h 07m	48%	31%

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

DTW · 1h 07m · leaves 05:33 6%

DFW · 1h 10m · leaves 05:16 7%

CLT · 1h 11m · leaves 06:41 7%

Afternoon and evening

PHX · 1h 01m · leaves 17:47 41%

MIA · 53m · leaves 17:30 52%

PHL · 47m · leaves 17:22 63%

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