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 CMH → SLC flights land within a few points of 9 in 10 on time whatever the hour.

Nonstops (seasonal or thin)


Delta	CMH	SLC	3h 59m	90%	0.6%	363	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 Columbus). Layovers up to 4 hours. Pick a connection for the details.


Southwest + Deltatwo ticketsDetails →	CMH 06:45 → LAS 08:00WN 1191	2h 00m Las Vegas	LAS 10:00 → SLC 12:27DL 1698	7h 42m	100%	89%
United Details →	CMH 07:15 → LAX 09:06UA 354	3h 49m Los Angeles	LAX 12:55 → SLC 15:48UA 5371 · flown by SkyWest	10h 33m	99%	88%
Delta Details →	CMH 08:04 → DTW 09:15DL 5812 · flown by Republic	3h 10m Detroit	DTW 12:25 → SLC 14:19DL 935	8h 15m	100%	87%
Delta Details →	CMH 06:00 → ATL 07:36DL 2469	2h 29m Atlanta	ATL 10:05 → SLC 12:10DL 387	8h 10m	97%	87%
Southwest Details →	CMH 05:45 → DEN 06:50WN 1186	55m Denver	DEN 07:45 → SLC 09:20WN 452	5h 35m	95%	85%
Delta Details →	CMH 07:05 → ATL 08:42DL 2909	3h 12m Atlanta	ATL 11:54 → SLC 13:50DL 663	8h 45m	99%	85%
Southwest + Deltatwo ticketsDetails →	CMH 05:10 → MCO 07:20WN 1193	3h 25m Orlando	MCO 10:45 → SLC 13:25DL 2031	10h 15m	100%	84%
American + Unitedtwo ticketsDetails →	CMH 05:30 → ORD 06:00AA 4487 · flown by Republic	2h 55m Chicago	ORD 08:55 → SLC 11:39UA 1972	8h 09m	100%	83%
Tight connection: often missed
American Details →	CMH 08:29 → ORD 09:10AA 3572 · flown by Envoy	55m Chicago	ORD 10:05 → SLC 12:35AA 2616	6h 07m	72%	60%
American Details →	CMH 20:05 → DFW 21:48AA 2337	1h 04m Dallas-Fort Worth	DFW 22:52 → SLC 00:36 +1AA 2378	6h 31m	68%	29%

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 · 55m · leaves 05:45 5%

ORD · 1h 16m · leaves 07:00 6%

DFW · 57m · leaves 05:48 9%

Afternoon and evening

DEN · 1h 00m · leaves 15:30 20%

CLT · 1h 13m · leaves 15:44 21%

DFW · 1h 04m · leaves 20:05 32%

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