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 6% of the time at 7 am and 29% of the time at 10 pm.

Nonstops


Delta	AUS	BOS	4h 09m	71%	2.5%	996	Flying now
JetBlue	AUS	BOS	4h 09m	61%	2.8%	395	Flying now
Southwest	AUS	BOS	3h 55m	57%	1.8%	282	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	AUS 18:29 → DEN 20:00UA 439	3h 59m Denver	DEN 23:59 → BOS 05:58 +1UA 2656	10h 29m	98%	88%
Southwest Details →	AUS 05:05 → MDW 07:35WN 356	1h 35m Chicago	MDW 09:10 → BOS 12:28WN 1405	6h 23m	95%	87%
United Details →	AUS 05:30 → IAH 06:33UA 1966	57m Houston	IAH 07:30 → BOS 12:28UA 1977	5h 58m	94%	86%
American Details →	AUS 06:16 → CLT 10:10AA 1482	1h 08m Charlotte	CLT 11:18 → BOS 13:33AA 1611	6h 17m	97%	85%
United Details →	AUS 05:39 → DEN 06:58UA 361	2h 42m Denver	DEN 09:40 → BOS 15:44UA 1232	9h 05m	99%	84%
Delta Details →	AUS 19:25 → SLC 21:21DL 2581	2h 10m Salt Lake City	SLC 23:31 → BOS 06:05 +1DL 696	9h 40m	94%	83%
Southwest Details →	AUS 05:45 → DEN 07:00WN 282	3h 00m Denver	DEN 10:00 → BOS 16:05WN 3690	9h 20m	100%	83%
Delta Details →	AUS 05:25 → ATL 08:48DL 1344	1h 12m Atlanta	ATL 10:00 → BOS 12:44DL 855	6h 19m	97%	82%
Tight connection: often missed
United Details →	AUS 06:40 → ORD 09:39UA 1878	46m Chicago	ORD 10:25 → BOS 14:04UA 1606	6h 22m	71%	57%
American Details →	AUS 16:55 → DFW 18:11AA 3400 · flown by Envoy	1h 02m Dallas-Fort Worth	DFW 19:13 → BOS 23:59AA 1767	6h 04m	68%	25%
Southwest Details →	AUS 17:15 → BWI 21:30WN 3385	1h 00m Baltimore	BWI 22:30 → BOS 00:10 +1WN 892	5h 50m	33%	16%

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

BWI · 1h 00m · leaves 05:25 0%

DAL · 1h 05m · leaves 05:35 2%

LAX · 55m · leaves 06:00 3%

Afternoon and evening

IAH · 50m · leaves 16:10 36%

CLT · 47m · leaves 17:41 46%

BWI · 1h 00m · leaves 17:15 67%

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 2573 AUS 18:35 → DEN United UA 2656 DEN 23:59 → BOS Connection details →	3h 54m	10h 23m	98%	88%
Southwest WN 282 AUS 05:45 → DEN United UA 1232 DEN 09:40 → BOS Connection details →	2h 40m	8h 59m	100%	85%
Southwest WN 251 AUS 05:30 → ATL Delta DL 862 ATL 11:10 → BOS Connection details →	2h 25m	7h 17m	100%	83%

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