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

Connect in the morning. The same one-hour layover misses 4% of the time at 9 am and 1 time in 4 at 10 pm.

Nonstops


United	AUS	DEN	2h 25m	85%	0.8%	1,921	Flying now
Frontier	AUS	DEN	2h 29m	84%	0.5%	580	Flying now
Delta	AUS	DEN	2h 31m	80%	0.6%	530	Flying now
Southwest	AUS	DEN	2h 20m	74%	0.5%	2,385	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	AUS 05:30 → IAH 06:33UA 1966	1h 57m Houston	IAH 08:30 → DEN 10:05UA 2816	5h 35m	98%	93%
Southwest Details →	AUS 06:05 → ABQ 06:55WN 2384	3h 55m Albuquerque	ABQ 10:50 → DEN 12:10WN 117	7h 05m	100%	92%
United Details →	AUS 06:40 → ORD 09:39UA 1878	1h 15m Chicago	ORD 10:54 → DEN 12:45UA 581	7h 05m	95%	91%
United Details →	AUS 06:00 → LAX 07:40UA 4642 · flown by SkyWest	1h 07m Los Angeles	LAX 08:47 → DEN 12:13UA 1912	7h 13m	97%	89%
Southwest Details →	AUS 05:50 → LAS 06:35WN 321	2h 20m Las Vegas	LAS 08:55 → DEN 11:50WN 247	7h 00m	100%	88%
United Details →	AUS 07:30 → IAD 11:48UA 525	1h 00m Dulles	IAD 12:48 → DEN 14:42UA 1587	8h 12m	95%	86%
United Details →	AUS 18:04 → IAH 19:10UA 1326	3h 00m Houston	IAH 22:10 → DEN 23:57UA 1066	6h 53m	96%	85%
United Details →	AUS 08:20 → ORD 11:17UA 202	1h 39m Chicago	ORD 12:56 → DEN 14:46UA 1150	7h 26m	97%	84%
Tight connection: often missed
United Details →	AUS 16:10 → IAH 17:25UA 4004 · flown by Mesa	54m Houston	IAH 18:19 → DEN 20:14UA 1654	5h 04m	67%	43%
Alaska Details →	AUS 08:30 → SEA 10:58AS 215	46m Seattle	SEA 11:44 → DEN 15:38AS 535	8h 08m	53%	41%
American Details →	AUS 18:26 → ORD 21:39AA 1398	55m Chicago	ORD 22:34 → DEN 00:17 +1AA 1387	6h 50m	54%	28%

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

SAN · 57m · leaves 06:45 1%

CLT · 1h 20m · leaves 06:16 3%

LAX · 1h 07m · leaves 06:00 3%

Afternoon and evening

SFO · 1h 05m · leaves 16:35 58%

PIT · 48m · leaves 13:58 70%

TPA · 50m · leaves 16:25 71%

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 321 AUS 05:50 → LAS United UA 1315 LAS 09:37 → DEN Connection details →	3h 02m	7h 51m	100%	93%
Southwest WN 2384 AUS 06:05 → ABQ United UA 5834 ABQ 10:45 → DEN Connection details →	3h 50m	7h 23m	100%	91%
Southwest WN 251 AUS 05:30 → ATL United UA 1327 ATL 11:10 → DEN Connection details →	2h 25m	7h 58m	100%	91%

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