from $98SHOP NOW
Posted 17 hr 40 min ago
Frontier Airlines offers select 1-way fares between San Francisco, CA, and St. Louis, MO, with prices starting at $98.10. That's the lowest rate we could find find for these fares by $117. This price is valid on flights departing from San Francisco, CA, (SFO) with arrival in St. Louis, MO, (STL) on September 10. Book this travel deal by September 3 for travel September 4 through September 29.