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

No clear winner: Alaska’s SBA → SEA flights land within a few points of 83% on time whatever the hour.

Nonstops (seasonal or thin)


Alaska	SBA	SEA	2h 41m	83%	1.3%	532	Flying now

Best connections, any airlines

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Seattle on time. Total trip = scheduled departure to arrival, layover included. Layovers up to 4 hours. Pick a connection for the details.


Delta Details →	SBA 16:50 → SLC 19:57DL 3853 · flown by SkyWest	2h 48m Salt Lake City	SLC 22:45 → SEA 23:59DL 2998	7h 09m	99%	90%
Delta Details →	SBA 05:50 → SLC 08:53DL 4069 · flown by SkyWest	2h 42m Salt Lake City	SLC 11:35 → SEA 12:52DL 2995	7h 02m	100%	88%
United + Deltatwo ticketsDetails →	SBA 06:00 → LAX 07:03UA 4649 · flown by SkyWest	2h 37m Los Angeles	LAX 09:40 → SEA 12:30DL 1714	6h 34m	95%	87%
Southwest + Deltatwo ticketsDetails →	SBA 09:40 → LAS 10:55WN 3601	2h 40m Las Vegas	LAS 13:35 → SEA 16:23DL 2905	6h 43m	97%	86%
American + Deltatwo ticketsDetails →	SBA 06:00 → PHX 07:36AA 1640	1h 44m Phoenix	PHX 09:20 → SEA 12:35DL 2374	6h 35m	95%	85%
Southwest + Unitedtwo ticketsDetails →	SBA 06:05 → DEN 09:20WN 4125	2h 02m Denver	DEN 11:22 → SEA 13:22UA 1424	7h 17m	98%	84%
Alaska + Deltatwo ticketsDetails →	SBA 07:34 → PDX 09:45AS 2178 · flown by Horizon	2h 38m Portland	PDX 12:23 → SEA 13:34DL 3802 · flown by SkyWest	6h 00m	97%	82%
Delta Details →	SBA 12:45 → SLC 15:52DL 3841 · flown by SkyWest	1h 28m Salt Lake City	SLC 17:20 → SEA 18:36DL 871	5h 51m	99%	80%
Tight connection: often missed
United Details →	SBA 13:58 → SFO 15:08UA 2305	1h 19m San Francisco	SFO 16:27 → SEA 18:47UA 2279	4h 49m	70%	53%
United Details →	SBA 16:03 → SFO 17:29UA 5256 · flown by SkyWest	59m San Francisco	SFO 18:28 → SEA 20:53UA 1577	4h 50m	74%	50%
United Details →	SBA 20:24 → SFO 21:50UA 5704 · flown by SkyWest	1h 09m San Francisco	SFO 22:59 → SEA 01:29 +1UA 5579 · flown by SkyWest	5h 05m	31%	22%

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

LAS · 1h 10m · leaves 05:05 2%

PDX · 50m · leaves 07:34 10%

Afternoon and evening

SLC · 47m · leaves 16:50 13%

SMF · 50m · leaves 19:50 26%

SFO · 1h 09m · leaves 20:24 69%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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