SeattleSan AntonioDirect FlightsSEA–SAT
Seattle (Seattle-Tacoma International Airport) to San Antonio (San Antonio International Airport).
Flight time from SEA to SAT is estimated at about 4h 15m, based on the 1,774-mile great-circle distance. Our current captured departure sample includes 2-3/day across 2 captured airlines, with Alaska Airlines appearing most often in that sample. Captured departure times run from 09:15 to 23:35 local time.
Plan this routeAt a glance
| Est. flight time | Distance | Captured freq. | Type |
|---|---|---|---|
| ~4h 15m Estimated from great-circle distance — no tracked flights yet. | 1,774 mi | 2-3/day From the current provider sample; confirm live timetables before booking. | Domestic |
Airlines on this route
Captured airlines for SEA to SAT
Our current provider sample includes 2-3/day from SEA to SAT across 2 captured airlines.
- First departure
- 09:15
- Last departure
- 23:35
- Cadence
- 5 departures/day
- Captured departures/day
- 5
| Airline | Captured daily freq. | Aircraft | Departures (local) |
|---|---|---|---|
| Alaska Airlines | 2/day | Boeing 737 · Seat map | 09:3810:5422:58 |
Aircraft on this route
Flying the other way?
SAT to SEA flights — 2-3/day on 1 airline →Methodology: airline, aircraft, terminal, and departure-time details come from the rolling scheduled-departures window for SEA to SAT, last seen June 15, 2026. Frequency uses 15 scheduled departures across 7 observed days; flight time is estimated from great-circle distance until this route has enough tracked flights for an observed average. Provider coverage can miss operators on some routes, so confirm live timetables before booking.
Route FAQ
How long is the flight from SEA to SAT?
The SEA to SAT flight time is estimated at about 4h 15m from great-circle distance until enough tracked flights are available.
How far is SEA from SAT?
SEA to SAT is about 1,774 miles by air.
Which airlines fly from SEA to SAT?
Our current provider sample for SEA to SAT includes Alaska Airlines, Delta Air Lines. Confirm live timetables before booking.
What aircraft fly from SEA to SAT?
Aircraft captured in our current provider sample for SEA to SAT include Airbus A220, Boeing 737.