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

No clear winner: American’s GJT → PHX flights land within a few points of 83% on time whatever the hour.

Nonstops (seasonal or thin)


American	GJT	PHX	1h 46m	83%	0.5%	983	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Phoenix on time. Total trip = scheduled departure to arrival, layover included (Phoenix is 1 h behind Grand Junction). Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	GJT 18:50 → SLC 20:00DL 4246 · flown by SkyWest	2h 45m Salt Lake City	SLC 22:45 → PHX 23:31DL 1496	5h 41m	99%	87%
United Details →	GJT 07:00 → DEN 08:22UA 1877	3h 03m Denver	DEN 11:25 → PHX 12:25UA 1686	6h 25m	99%	86%
Delta Details →	GJT 07:34 → SLC 08:45DL 4230 · flown by SkyWest	2h 45m Salt Lake City	SLC 11:30 → PHX 12:12DL 1431	5h 40m	99%	85%
United Details →	GJT 11:19 → DEN 12:45UA 4709 · flown by SkyWest	2h 50m Denver	DEN 15:35 → PHX 16:35UA 1254	6h 16m	98%	78%
United Details →	GJT 05:30 → DEN 07:00UA 4800 · flown by SkyWest	1h 00m Denver	DEN 08:00 → PHX 09:00UA 1481	4h 30m	86%	73%
American Details →	GJT 06:26 → DFW 09:50AA 6414 · flown by SkyWest	2h 43m Dallas-Fort Worth	DFW 12:33 → PHX 13:00AA 1685	7h 34m	99%	71%
United Details →	GJT 15:15 → DEN 16:45UA 4635 · flown by SkyWest	2h 47m Denver	DEN 19:32 → PHX 20:32UA 1729	6h 17m	93%	69%
American Details →	GJT 10:56 → DFW 14:17AA 4918 · flown by SkyWest	1h 17m Dallas-Fort Worth	DFW 15:34 → PHX 15:59AA 554	6h 03m	82%	62%
Tight connection: often missed
American Details →	GJT 16:55 → DFW 20:19AA 4996 · flown by SkyWest	1h 10m Dallas-Fort Worth	DFW 21:29 → PHX 22:06AA 3239	6h 12m	58%	33%

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

DFW · 1h 00m · leaves 06:26 11%

DEN · 1h 00m · leaves 05:30 14%

Afternoon and evening

DEN · 1h 20m · leaves 18:10 22%

DFW · 1h 10m · leaves 16:55 42%

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 4230 GJT 07:34 → SLC American AA 6422 SLC 12:15 → PHX Connection details →	3h 30m	6h 26m	99%	86%
United UA 1877 GJT 07:00 → DEN American AA 1757 DEN 12:15 → PHX Connection details →	3h 53m	7h 08m	99%	81%
United UA 4800 GJT 05:30 → DEN Frontier F9 2141 DEN 09:15 → PHX Connection details →	2h 15m	5h 46m	92%	80%

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