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

No clear winner: Delta’s SLC → CMH flights land within a few points of 4 in 5 on time whatever the hour.

Nonstops (seasonal or thin)


Delta	SLC	CMH	3h 31m	80%	0.6%	363	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	SLC 05:15 → DEN 06:54UA 5683 · flown by SkyWest	2h 41m Denver	DEN 09:35 → CMH 14:28UA 480	7h 13m	99%	91%
Delta Details →	SLC 13:55 → DTW 19:24DL 2244	3h 26m Detroit	DTW 22:50 → CMH 23:56DL 5634 · flown by Republic	8h 01m	99%	89%
Delta Details →	SLC 23:35 → ATL 05:15DL 912	2h 15m Atlanta	ATL 07:30 → CMH 09:02 +1DL 1479	7h 30m	99%	86%
Delta Details →	SLC 07:00 → ATL 12:44DL 907	1h 41m Atlanta	ATL 14:25 → CMH 15:59DL 2200	7h 00m	98%	85%
United Details →	SLC 23:59 → IAD 06:13UA 726	2h 12m Dulles	IAD 08:25 → CMH 09:49 +1UA 4076 · flown by Mesa	7h 50m	98%	85%
United Details →	SLC 06:45 → IAH 10:57UA 2366	1h 18m Houston	IAH 12:15 → CMH 16:05UA 4072 · flown by Mesa	7h 20m	96%	84%
Southwest Details →	SLC 06:25 → LAS 06:50WN 4205	50m Las Vegas	LAS 07:40 → CMH 14:40WN 2212	6h 15m	95%	84%
Delta Details →	SLC 06:00 → DTW 11:23DL 2289	55m Detroit	DTW 12:18 → CMH 13:27DL 5774 · flown by Republic	5h 27m	93%	84%
Tight connection: often missed
American Details →	SLC 12:15 → CLT 18:28AA 2602	55m Charlotte	CLT 19:23 → CMH 20:56AA 1540	6h 41m	70%	42%
United Details →	SLC 16:18 → ORD 20:40UA 2072	50m Chicago	ORD 21:30 → CMH 23:59UA 1492	5h 41m	51%	32%
Southwest Details →	SLC 11:25 → BNA 15:40WN 3384	50m Nashville	BNA 16:30 → CMH 18:50WN 481	5h 25m	46%	19%

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 15m · leaves 07:45 2%

AUS · 1h 10m · leaves 06:05 2%

IAH · 1h 18m · leaves 06:45 4%

Afternoon and evening

ORD · 50m · leaves 16:18 49%

BNA · 50m · leaves 11:25 54%

MDW · 47m · leaves 14:05 69%

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 3737 SLC 05:42 → DEN United UA 480 DEN 09:35 → CMH Connection details →	2h 27m	6h 46m	100%	90%
Delta DL 696 SLC 23:31 → BOS American AA 4399 BOS 08:09 → CMH Connection details →	2h 04m	8h 59m	98%	83%
Delta DL 2038 SLC 23:38 → EWR United UA 3641 EWR 08:45 → CMH Connection details →	2h 45m	9h 02m	98%	82%

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