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 ASE → DFW flights land within a few points of 2 in 3 on time whatever the hour.

Nonstops


American	ASE	DFW	2h 19m	67%	7.2%	1,185	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Dallas-Fort Worth on time. Total trip = scheduled departure to arrival, layover included (Dallas-Fort Worth is 1 h ahead of Aspen). Layovers up to 4 hours. Pick a connection for the details.


United Details →	ASE 07:30 → DEN 08:48UA 5766 · flown by SkyWest	52m Denver	DEN 09:40 → DFW 12:48UA 355	4h 18m	86%	78%
United Details →	ASE 08:32 → DEN 09:50UA 4687 · flown by SkyWest	3h 55m Denver	DEN 13:45 → DFW 16:51UA 578	7h 19m	99%	74%
United Details →	ASE 07:00 → IAH 10:47UA 5300 · flown by SkyWest	3h 59m Houston	IAH 14:46 → DFW 16:16UA 1388	8h 16m	97%	70%
Delta Details →	ASE 07:36 → ATL 13:09DL 3924 · flown by SkyWest	1h 16m Atlanta	ATL 14:25 → DFW 15:46DL 921	7h 10m	89%	65%
United Details →	ASE 11:43 → IAH 15:40UA 5493 · flown by SkyWest	2h 25m Houston	IAH 18:05 → DFW 19:31UA 1535	6h 48m	92%	62%
United Details →	ASE 09:00 → ORD 13:04UA 4669 · flown by SkyWest	2h 36m Chicago	ORD 15:40 → DFW 18:22UA 793	8h 22m	91%	59%
United Details →	ASE 17:10 → DEN 18:23UA 5778 · flown by SkyWest	2h 30m Denver	DEN 20:53 → DFW 23:59UA 2239	5h 49m	92%	59%
United Details →	ASE 11:32 → DEN 12:45UA 5772 · flown by SkyWest	2h 57m Denver	DEN 15:42 → DFW 18:48UA 414	6h 16m	95%	58%
Tight connection: often missed
United Details →	ASE 18:12 → DEN 19:25UA 6011 · flown by SkyWest	1h 28m Denver	DEN 20:53 → DFW 23:59UA 2239	4h 47m	74%	39%

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 18m · leaves 07:00 10%

DEN · 52m · leaves 07:30 14%

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 4687 ASE 08:32 → DEN American AA 2359 DEN 12:39 → DFW Connection details →	2h 49m	6h 14m	99%	61%
United UA 5766 ASE 07:30 → DEN American AA 1756 DEN 10:38 → DFW Connection details →	1h 50m	5h 10m	91%	59%
United UA 5956 ASE 12:39 → ORD American AA 3544 ORD 19:26 → DFW Connection details →	2h 41m	8h 29m	88%	58%

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