Find the cheapest American Airlines flights on Expedia from St. Louis (STL) to Los Angeles (QLA). Flight ticket prices change frequently based on availability and demand. We send price-drop alerts to make air travel simple and flexible. The lowest one-way fare found on Expedia with American Airlines for this route in the past 7 days starts at S$538 for travel on 13 November 2026.
S$538 Cheap American Airlines flights St. Louis (STL) to Los Angeles (QLA)
Prices were available within the past 7 days and start at S$538 for one-way flights and S$1,012 for return, for the period specified. Prices and availability are subject to change.