DL: SEA-LAX F $138 each way
Tu/We/Sa availability. Books into G class. SEA-LAX is a Delta Shuttle market.
Delta Comfort+ (W class) is $93.
Delta Basic Economy (E class) is $75. Main Cabin (V class) is $85.
Of interesting note is that this is the first time Basic Economy has entered a Delta Shuttle city pair. Presumably, even those flying in BE will still get free alcohol and Luvo wraps.
These fares are significantly cheaper than Alaska for both F and Y cabins.