| Cheap Flights: San Antonio to/from Honolulu or Kona $346-$371 r/t [August-March] (Weekends) â United United has round-trip flights from San Antonio (SAT) to Honolulu or Kona (HNL/KOA) for $346-$371 with a connection. Flights August to March. Weekends available. Origin/Destination reversible. This isnât an exact match of the Southwest deal thatâs going on. United has weekend availability out of SAT (but not AUS). United has bag fees on this fare. A negative COVID test result is required for entry. Click for more details and booking links Cheap Flights: San Antonio to/from Honolulu or Kona $346-$371 r/t [August-March] (Weekends) â United . | 