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 4% of the time at 12 pm and 2 times in 5 at 10 pm.

Nonstops


Delta	SLC	ATL	3h 46m	87%	0.6%	2,966	Flying now
Frontier	SLC	ATL	–	50%few flights	0.0%	6	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	SLC 23:35 → BWI 05:40WN 3735	2h 40m Baltimore	BWI 08:20 → ATL 10:20 +1WN 3931	8h 43m	100%	92%
Delta Details →	SLC 23:00 → MIA 05:42DL 2040	2h 35m Miami	MIA 08:17 → ATL 10:20 +1DL 1261	9h 20m	99%	91%
Delta Details →	SLC 07:55 → SJC 09:02DL 4026 · flown by SkyWest	3h 44m San Jose	SJC 12:46 → ATL 20:35DL 809	10h 40m	100%	91%
Delta Details →	SLC 23:36 → TPA 05:45DL 2077	3h 00m Tampa	TPA 08:45 → ATL 10:20 +1DL 744	8h 44m	99%	88%
Delta Details →	SLC 08:10 → SMF 08:55DL 1367	3h 23m Sacramento	SMF 12:18 → ATL 20:02DL 904	9h 52m	99%	88%
Alaska Details →	SLC 18:44 → SEA 20:00AS 665	3h 31m Seattle	SEA 23:31 → ATL 07:24 +1AS 464	10h 40m	100%	87%
Delta Details →	SLC 21:05 → DEN 22:40DL 1667	2h 00m Denver	DEN 00:40 → ATL 05:42 +1DL 302	6h 37m	96%	87%
Delta Details →	SLC 08:25 → LAS 08:53DL 1698	2h 48m Las Vegas	LAS 11:41 → ATL 18:47DL 748	8h 22m	99%	86%
Tight connection: often missed
American Details →	SLC 13:28 → ORD 17:59AA 2616	1h 00m Chicago	ORD 18:59 → ATL 22:05AA 2779	6h 35m	73%	35%
American Details →	SLC 11:18 → DFW 15:06AA 2607	54m Dallas-Fort Worth	DFW 16:00 → ATL 19:11AA 1379	5h 53m	74%	23%
Southwest Details →	SLC 16:45 → DEN 18:15WN 3740	50m Denver	DEN 19:05 → ATL 00:55 +1WN 1472	5h 20m	18%	2%

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

DEN · 1h 18m · leaves 07:00 3%

MSP · 1h 13m · leaves 08:00 4%

DTW · 1h 02m · leaves 06:00 5%

Afternoon and evening

SFO · 1h 00m · leaves 20:59 41%

SEA · 53m · leaves 20:44 62%

DEN · 50m · leaves 16:45 82%

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 2079 SLC 23:40 → BWI Southwest WN 3931 BWI 08:20 → ATL Connection details →	2h 31m	8h 38m	98%	89%
Alaska AS 3019 SLC 18:06 → SAN Delta DL 819 SAN 22:30 → ATL Connection details →	3h 14m	9h 44m	96%	88%
Delta DL 2077 SLC 23:36 → TPA Southwest WN 4987 TPA 09:20 → ATL Connection details →	3h 35m	9h 19m	99%	87%

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