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 3% of the time at 7 am and 27% of the time at 10 pm.

Nonstops


United	AUS	IAD	3h 16m	91%	0.9%	1,101	Flying now
Allegiant	AUS	IAD	3h 21m	58%few flights	0.0%	24	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	AUS 05:39 → DEN 06:58UA 361	1h 02m Denver	DEN 08:00 → IAD 13:26UA 1101	6h 47m	97%	90%
United Details →	AUS 06:40 → ORD 09:39UA 1878	1h 28m Chicago	ORD 11:07 → IAD 14:12UA 1869	6h 32m	96%	84%
Delta Details →	AUS 05:25 → ATL 08:48DL 1344	3h 29m Atlanta	ATL 12:17 → IAD 14:02DL 2135	7h 37m	99%	83%
United Details →	AUS 11:27 → DEN 12:45UA 779	1h 08m Denver	DEN 13:53 → IAD 19:22UA 347	6h 55m	95%	82%
United Details →	AUS 05:30 → IAH 06:33UA 1966	47m Houston	IAH 07:20 → IAD 11:28UA 1549	4h 58m	91%	81%
United Details →	AUS 07:10 → IAH 08:13UA 2393	4h 00m Houston	IAH 12:13 → IAD 16:30UA 2366	8h 20m	99%	81%
United Details →	AUS 08:30 → DEN 09:49UA 595	2h 37m Denver	DEN 12:26 → IAD 17:58UA 2853	8h 28m	99%	80%
Delta Details →	AUS 08:00 → DTW 11:56DL 559	3h 14m Detroit	DTW 15:10 → IAD 16:42DL 1787	7h 42m	98%	80%
Tight connection: often missed
United Details →	AUS 16:10 → IAH 17:25UA 4004 · flown by Mesa	1h 07m Houston	IAH 18:32 → IAD 22:43UA 1373	5h 33m	75%	54%
Delta Details →	AUS 18:24 → ATL 22:00DL 1491	53m Atlanta	ATL 22:53 → IAD 00:44 +1DL 2549	5h 20m	73%	53%
American Details →	AUS 17:41 → CLT 21:39AA 1408	1h 06m Charlotte	CLT 22:45 → IAD 00:10 +1AA 1242	5h 29m	70%	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

DEN · 1h 02m · leaves 05:39 3%

ATL · 1h 02m · leaves 05:25 4%

CLT · 55m · leaves 06:16 5%

Afternoon and evening

IAH · 1h 07m · leaves 16:10 25%

ATL · 53m · leaves 18:24 27%

CLT · 1h 06m · leaves 17:41 30%

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 1140 LAS 08:48 → IAD Connection details →	2h 13m	9h 34m	100%	87%
Southwest WN 374 AUS 06:40 → PHX United UA 1873 PHX 08:50 → IAD Connection details →	1h 50m	8h 37m	97%	86%
Delta DL 3650 AUS 07:10 → MCI United UA 688 MCI 12:30 → IAD Connection details →	3h 08m	7h 53m	96%	86%

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