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 10 am and 23% of the time at 6 pm.

Nonstops (seasonal or thin)


Alaska	SAT	SEA	4h 30m	79%	1.3%	558	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Seattle on time. Total trip = scheduled departure to arrival, layover included (Seattle is 2 h behind San Antonio). Layovers up to 4 hours. Pick a connection for the details.


United Details →	SAT 05:30 → IAH 06:37UA 469	1h 23m Houston	IAH 08:00 → SEA 10:47UA 2654	7h 17m	96%	92%
Delta Details →	SAT 18:03 → SLC 20:00DL 2685	2h 45m Salt Lake City	SLC 22:45 → SEA 23:59DL 2998	7h 56m	98%	89%
Delta Details →	SAT 07:19 → LAX 08:20DL 2534	3h 39m Los Angeles	LAX 11:59 → SEA 14:54DL 1045	9h 35m	99%	87%
Delta Details →	SAT 06:30 → SLC 08:24DL 2592	3h 11m Salt Lake City	SLC 11:35 → SEA 12:52DL 2995	8h 22m	99%	87%
American Details →	SAT 08:41 → PHX 09:16AA 3906 · flown by Envoy	2h 16m Phoenix	PHX 11:32 → SEA 14:49AA 3440 · flown by Envoy	8h 05m	99%	85%
United Details →	SAT 05:40 → DEN 06:57UA 1464	1h 04m Denver	DEN 08:01 → SEA 10:00UA 2271	6h 20m	93%	84%
United Details →	SAT 07:00 → IAD 11:27UA 471	1h 43m Dulles	IAD 13:10 → SEA 15:55UA 2241	10h 55m	98%	84%
Delta Details →	SAT 06:05 → MSP 09:00DL 2717	2h 10m Minneapolis	MSP 11:10 → SEA 12:58DL 889	8h 53m	98%	83%
Tight connection: often missed
American Details →	SAT 15:44 → PHX 16:10AA 2495	1h 45m Phoenix	PHX 17:55 → SEA 21:05AA 4307 · flown by Envoy	7h 21m	69%	58%
American Details →	SAT 17:35 → DFW 18:59AA 3311	1h 14m Dallas-Fort Worth	DFW 20:13 → SEA 22:26AA 2003	6h 51m	69%	35%
Southwest Details →	SAT 18:30 → DEN 20:00WN 3568	1h 10m Denver	DEN 21:10 → SEA 23:10WN 3856	6h 35m	60%	17%

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

DAL · 1h 20m · leaves 05:40 4%

ATL · 1h 04m · leaves 06:40 4%

SFO · 1h 20m · leaves 07:00 4%

Afternoon and evening

DEN · 1h 10m · leaves 18:30 40%

IAH · 51m · leaves 17:57 46%

DFW · 57m · leaves 20:23 51%

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.


American AA 3906 SAT 08:41 → PHX Delta DL 2419 PHX 12:05 → SEA Connection details →	2h 49m	8h 37m	99%	92%
Southwest WN 3545 SAT 06:20 → SAN Delta DL 2508 SAN 11:05 → SEA Connection details →	3h 55m	10h 01m	100%	89%
Southwest WN 1662 SAT 05:50 → LAS Alaska AS 629 LAS 10:28 → SEA Connection details →	3h 58m	9h 24m	100%	89%

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