The San Antonio International Airport is approximately 8.5 miles from the downtown business district with a travel time of approximately 15 minutes by car.
Shuttle Service – Shuttle service to the downtown area is $18 one-way or $32 round-trip; Northwest Area (near SeaWorld) or JW Marriott is approximately $39 one-way or $60 round trip; Westin La Cantera approximately $26 one-way or $42 round-trip. Look for the Shuttle Service kiosks in both terminals near baggage claim or book your trip in advance and get a discount – click here.
Taxi rides – Traveling with a friend – two to six ride for the price of one. Approximate fares, not including tips, to the downtown business district from the airport range from $24 – $26; Northwest Area (near SeaWorld) $39-$41; Westin La Cantera Resort or JW Marriott $33-$35.
It looks like the pre-booked shuttle is the best option for those on a budget.