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

No clear winner: United’s DEN → GJT flights land within a few points of 4 in 5 on time whatever the hour.

Nonstops


United	DEN	GJT	1h 11m	80%	1.2%	2,256	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	DEN 15:55 → SLC 17:34DL 1623	3h 16m Salt Lake City	SLC 20:50 → GJT 21:54DL 4234 · flown by SkyWest	5h 59m	96%	92%
Delta Details →	DEN 12:45 → SLC 14:18DL 1553	2h 52m Salt Lake City	SLC 17:10 → GJT 18:15DL 4246 · flown by SkyWest	5h 30m	99%	90%
American Details →	DEN 05:00 → DFW 08:05AA 2612	46m Dallas-Fort Worth	DFW 08:51 → GJT 10:26AA 4918 · flown by SkyWest	5h 26m	82%	69%
American Details →	DEN 09:04 → DFW 12:07AA 1523	2h 52m Dallas-Fort Worth	DFW 14:59 → GJT 16:25AA 4996 · flown by SkyWest	7h 20m	94%	69%
American Details →	DEN 12:15 → PHX 13:08AA 1757	2h 45m Phoenix	PHX 15:53 → GJT 18:23AA 4994 · flown by SkyWest	6h 08m	96%	69%
American Details →	DEN 15:11 → DFW 18:21AA 420	2h 59m Dallas-Fort Worth	DFW 21:20 → GJT 22:51AA 6442 · flown by SkyWest	7h 40m	95%	64%
American Details →	DEN 18:56 → PHX 19:52AA 1638	1h 56m Phoenix	PHX 21:48 → GJT 00:16 +1AA 6318 · flown by SkyWest	5h 20m	78%	62%

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 · 46m · leaves 05:00 18%

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 1731 DEN 11:45 → SLC Delta DL 4246 SLC 17:10 → GJT Connection details →	3h 45m	6h 30m	100%	92%
United UA 5261 DEN 16:29 → SLC Delta DL 4234 SLC 20:50 → GJT Connection details →	2h 40m	5h 25m	92%	89%
Southwest WN 1675 DEN 06:15 → PHX American AA 4995 PHX 08:48 → GJT Connection details →	1h 43m	5h 16m	91%	79%

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