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

Nonstops (seasonal or thin)


Delta	IND	SLC	3h 35m	89%	1.4%	364	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 Indianapolis). Layovers up to 4 hours. Pick a connection for the details.


Southwest + Deltatwo ticketsDetails →	IND 06:20 → PHX 07:00WN 4137	2h 45m Phoenix	PHX 09:45 → SLC 12:23DL 1447	8h 03m	100%	93%
American Details →	IND 06:01 → PHX 06:44AA 1773	1h 55m Phoenix	PHX 08:39 → SLC 11:37AA 6422 · flown by SkyWest	7h 36m	100%	91%
Delta Details →	IND 06:00 → ATL 07:39DL 3105	2h 26m Atlanta	ATL 10:05 → SLC 12:10DL 387	8h 10m	99%	89%
American + Frontiertwo ticketsDetails →	IND 06:01 → PHX 06:47AA 796	2h 27m Phoenix	PHX 09:14 → SLC 11:54F9 3872	7h 52m	95%	88%
Delta Details →	IND 08:05 → ATL 09:44DL 1901	2h 10m Atlanta	ATL 11:54 → SLC 13:50DL 663	7h 45m	99%	87%
American + Deltatwo ticketsDetails →	IND 07:00 → LAX 08:27AA 598	3h 14m Los Angeles	LAX 11:41 → SLC 14:30DL 1194	9h 34m	96%	87%
Southwest + Frontiertwo ticketsDetails →	IND 09:35 → DEN 10:15WN 2118	3h 03m Denver	DEN 13:18 → SLC 14:55F9 3981	7h 20m	100%	86%
Southwest + Deltatwo ticketsDetails →	IND 07:15 → LAS 08:10WN 2125	1h 50m Las Vegas	LAS 10:00 → SLC 12:27DL 1698	7h 12m	95%	84%
Tight connection: often missed
Delta Details →	IND 16:33 → ATL 18:15DL 3138	1h 10m Atlanta	ATL 19:25 → SLC 21:30DL 660	6h 57m	75%	57%
American Details →	IND 18:41 → PHX 19:23AA 3078	57m Phoenix	PHX 20:20 → SLC 23:03AA 4921 · flown by SkyWest	6h 22m	66%	48%
United Details →	IND 18:33 → ORD 19:00UA 5435 · flown by SkyWest	1h 10m Chicago	ORD 20:10 → SLC 22:48UA 1710	6h 15m	74%	38%

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

IAH · 1h 17m · leaves 07:00 8%

DFW · 1h 05m · leaves 06:01 8%

SFO · 58m · leaves 06:00 16%

Afternoon and evening

PHL · 59m · leaves 16:49 33%

DFW · 1h 08m · leaves 20:19 39%

PHX · 55m · leaves 21:15 52%

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