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 PIT → SLC flights land within a few points of 77% on time whatever the hour.

Nonstops (seasonal or thin)


Delta	PIT	SLC	4h 23m	77%	1.1%	363	Flying now

Best connections, one ticket

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 Pittsburgh). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	PIT 05:45 → ATL 07:25DL 1504	2h 40m Atlanta	ATL 10:05 → SLC 12:10DL 387	8h 25m	99%	88%
United Details →	PIT 08:30 → DEN 09:59UA 1765	3h 41m Denver	DEN 13:40 → SLC 15:13UA 1840	8h 43m	99%	83%
Delta Details →	PIT 07:00 → ATL 08:49DL 1383	3h 05m Atlanta	ATL 11:54 → SLC 13:50DL 663	8h 50m	99%	83%
American Details →	PIT 06:23 → ORD 07:21AA 4427 · flown by Republic	2h 44m Chicago	ORD 10:05 → SLC 12:35AA 2616	8h 13m	99%	82%
Delta Details →	PIT 10:10 → ATL 12:00DL 1380	1h 55m Atlanta	ATL 13:55 → SLC 15:51DL 423	7h 43m	98%	81%
United Details →	PIT 06:15 → IAH 08:18UA 1859	1h 27m Houston	IAH 09:45 → SLC 11:59UA 756	7h 44m	98%	80%
Southwest Details →	PIT 05:32 → DEN 06:55WN 3368	3h 10m Denver	DEN 10:05 → SLC 11:45WN 4027	8h 08m	98%	78%
Delta Details →	PIT 11:50 → ATL 13:35DL 1363	1h 49m Atlanta	ATL 15:24 → SLC 17:24DL 526	7h 34m	98%	78%
Tight connection: often missed
Delta Details →	PIT 17:46 → DTW 19:04DL 5766 · flown by Republic	1h 11m Detroit	DTW 20:15 → SLC 22:13DL 2117	6h 27m	72%	44%
American Details →	PIT 17:05 → PHL 18:34AA 2312	1h 14m Philadelphia	PHL 19:48 → SLC 23:02AA 2610	7h 57m	71%	42%
American Details →	PIT 19:36 → DFW 21:43AA 2307	1h 09m Dallas-Fort Worth	DFW 22:52 → SLC 00:36 +1AA 2378	7h 00m	72%	30%

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

ATL · 1h 16m · leaves 07:00 4%

ORD · 1h 05m · leaves 08:02 6%

CLT · 50m · leaves 06:38 11%

Afternoon and evening

PHL · 1h 14m · leaves 17:05 29%

SFO · 1h 03m · leaves 17:23 50%

DEN · 50m · leaves 18:40 79%

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.


United UA 1765 PIT 08:30 → DEN Frontier F9 3981 DEN 13:18 → SLC Connection details →	3h 19m	8h 25m	99%	84%
Southwest WN 3374 PIT 05:10 → MCO Delta DL 2031 MCO 10:45 → SLC Connection details →	3h 15m	10h 15m	100%	84%
Southwest WN 3383 PIT 13:20 → PHX Delta DL 1738 PHX 17:05 → SLC Connection details →	2h 25m	8h 23m	95%	83%

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