$227 Cheap American Airlines flights St. Louis (STL) to Santa Rosa (STS)

View $227 flight on Thu, Sep 4, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • one key icon
    Earn twice
    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

$227 Cheap American Airlines flights St. Louis (STL) to Santa Rosa (STS)

Prices were available within the past 7 days and start at $227 for one-way flights and $476 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Oct 18 - Sat, Oct 25
STL
St. Louis
STS
Santa Rosa
$476 Roundtrip, found 4 days ago
$476
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Oct 18 from St. Louis to Santa Rosa, returning Sat, Oct 25, priced at $476 found 4 days ago
Flights from St. Louis (STL) to Santa Rosa (STS)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Sonoma County
Airlines serving
Alaska Airlines, American Airlines, Hawaiian Airlines
Popular airline
Alaska Airlines
Distance
1741 mi

Explore a world of travel with Expedia

*Available to One Key members.