United Airlines: Los Angeles - St. Louis for $160 r/t

Another great deal for all you Star Alliance mileage runners and those wishing to visit St. Louis from Los Angeles or LAX from STL.

United is offering Los Angeles - St. Louis r/ts from the end of August through December for $160 round-trip including taxes. Depart on Tuesday, Wednesday, or Saturday. Same day turns are available. Book at united.com.

The best same-day routing I found was LAX-DEN-STL-SFO-LAX. If you're willing to overnight in STL, you can route through DFW and ORD (LAX-DFW-ORD-STL-ORD-DFW-LAX) for even more miles. That itinerary would earn 5,074 base miles. 

As always with these cheap fares, book now if you are interested.