
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Santa Rosa (STS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $393 (American Airlines) |
One-way from | $197 (Alaska Airlines) |
Popular in | October |
Cheapest in | September |
Average price | $569 |
Fly from
Fly to
Route
Depart
Return
St. LouisSanta Rosa
STL Lambert-St Louis - STS Santa Rosa Sonoma County
STLSTS
Lambert-St Louis
Wed 12/16
6:04 am-12:16 pm
1 stop8h 12m
Santa Rosa Sonoma County
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
St. LouisSanta Rosa
STL Lambert-St Louis - STS Santa Rosa Sonoma County
STLSTS
Lambert-St Louis
Wed 2/24
7:00 am-11:55 am
1 stop6h 55m
Santa Rosa Sonoma County
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
St. LouisSanta Rosa
STL Lambert-St Louis - STS Santa Rosa Sonoma County
STLSTS
Lambert-St Louis
Mon 12/14
6:04 am-12:16 pm
1 stop8h 12m
Santa Rosa Sonoma County
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
St. LouisSanta Rosa
STL Lambert-St Louis - STS Santa Rosa Sonoma County
STLSTS
Lambert-St Louis
Mon 12/14
6:00 am-4:05 pm
2 stops12h 05m
Santa Rosa Sonoma County
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
St. LouisSanta Rosa
STL Lambert-St Louis - STS Santa Rosa Sonoma County
STLSTS
Lambert-St Louis
Tue 12/15
6:00 am-4:05 pm
2 stops12h 05m
Santa Rosa Sonoma County
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
St. LouisSanta Rosa
STL Lambert-St Louis - STS Santa Rosa Sonoma County
STLSTS
Lambert-St Louis
Wed 12/16
12:31 pm-4:05 pm
2 stops29h 34m
Santa Rosa Sonoma County
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
St. LouisSanta Rosa
STL Lambert-St Louis - STS Santa Rosa Sonoma County
STLSTS
Lambert-St Louis
Tue 12/15
7:55 am-12:46 pm
1 stop6h 51m
Santa Rosa Sonoma County
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
St. LouisSanta Rosa
STL Lambert-St Louis - STS Santa Rosa Sonoma County
STLSTS
Lambert-St Louis
Thu 12/17
7:35 am-12:49 pm
1 stop7h 14m
Santa Rosa Sonoma County
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
St. LouisSanta Rosa
STL Lambert-St Louis - STS Santa Rosa Sonoma County
STLSTS
Lambert-St Louis
Fri 12/18
4:32 pm-11:59 pm
1 stop9h 27m
Santa Rosa Sonoma County
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
St. LouisSanta Rosa
STL Lambert-St Louis - STS Santa Rosa Sonoma County
STLSTS
Lambert-St Louis
Fri 1/15
3:45 pm-11:42 pm
2 stops9h 57m
Santa Rosa Sonoma County
Mon 1/18
1:17 pm-11:55 pm
1 stop8h 38m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
Everything you need to know about your flight from St. Louis to Santa Rosa
Entertainment
Food
Comfort
Overall
Boarding
Crew
Reviews
Anonymous,Mar 2026
MIA - SFO
Entertainment
Food
Comfort
Overall
Boarding
Crew
Reviews
Anonymous,Mar 2026
MIA - SFO
Find useful and relevant information for your journey from St. Louis to Santa Rosa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$334 | Average$530 | FlexibilityNo cancel fee | On-time71% |