Seattle to San Antonio (SEA-SAT): nonstop upgrade & award space

Alaska Airlines and United Airlines fly the SEA to SAT nonstop about 8 times a week. Alaska Airlines sets the rhythm here, a few flights a day with a small premium cabin on each, so a date with open space is worth acting on the day you see it. 2LNR tracks confirmed upgrade and award space on Alaska Airlines, on every SEA to SAT departure, so you know which flights have space before you book.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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8
Nonstop flights a week
1,773 mi
Nonstop distance
Free
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Seattle to San Antonio flight schedule

Scheduled nonstop departures for SEA to SAT, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Seattle (SEA) to San Antonio (SAT)
Date Flight Airline Departs SEA Arrives SAT Duration Aircraft
AS 494Alaska Airlines, Inc.10:0016:194h 19m73J
AS 494Alaska Airlines, Inc.10:0016:194h 19m7M9
AS 494Alaska Airlines, Inc.10:0016:194h 19m73J
AS 494Alaska Airlines, Inc.10:0016:194h 19m73J
UA 2281United Airlines13:1621:596h 43m320
AS 494Alaska Airlines, Inc.10:0016:194h 19m7M9
AS 494Alaska Airlines, Inc.10:0016:194h 19m73J
AS 494Alaska Airlines, Inc.10:1116:314h 20m7M9

Showing all 8 scheduled SEA to SAT departures across the next 7 days with service. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every SEA to SAT date on the interactive map

Confirmed upgrade & award space on SEA to SAT departures

2LNR tracks confirmed upgrade and award space on Alaska Airlines, segment by segment and date by date. Open the calendar for Seattle to San Antonio to see which departures have space, the next 14 days free on every product and the full horizon on Pro.

See real availability

Confirmed upgrade and award seats on each SEA to SAT departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See SEA to SAT on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Seattle to San Antonio nonstop

Carriers operating SEA to SAT nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See SEA to SAT on the interactive map →

Frequently asked questions about SEA to SAT

How far is San Antonio from Seattle?
SEA to SAT covers about 1,773 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from SEA to SAT?
Alaska Airlines and United Airlines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on Alaska Airlines.
How many flights a week are there from SEA to SAT?
About 8 nonstop flights a week run between Seattle and San Antonio in the current schedule, operated by Alaska Airlines and United Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from SEA to SAT depart?
Scheduled SEA to SAT nonstops in the next 7 days with service leave between 10:00 and 13:16, local time at Seattle. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
How do I check upgrade or award availability on SEA to SAT?
Open the SEA to SAT route on the interactive map or the matrix to see confirmed upgrade and award space by date on Alaska Airlines, the next 14 days free and the full horizon on Pro. On Pro you can also set an alert on the route and 2LNR notifies you when space opens.

Never miss SEA to SAT upgrade or award space

See what is open by date on this route, the next 14 days free on every product and the full horizon on Pro.

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