United has round-trip flights from San Antonio (SAT) to Seattle (SEA) for $157 with a connection. Flights January, February, March, April, May, August, and September. Weekends available. Origin/Destination reversible.
United’s “Basic Economy” fares do not allow for a free carry-on bag. Only a personal item (like a small laptop bag) is free. Seats are randomly assigned for free prior to boarding.