$387+ Cheap flights from Santa Rosa to St. Louis (STS - STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
STS — STL
Jan 24 — Jan 311
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Santa Rosa to St. Louis
Best flights from Santa Rosa to St. LouisDiscover carefully curated flight deals from Santa Rosa to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 25, 2025.
Discover carefully curated flight deals from Santa Rosa to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 25, 2025.
This Alaska Airlines deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/167:57 pmSTS - STL
1 stop15h 54mAlaska Airlines
Sat 3/215:30 pmSTL - STS
1 stop26h 31mAlaska Airlines
Deal found 12/24![Alaska Airlines logo]()
$387
This Alaska Airlines deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/247:57 pmSTS - STL
2 stops10h 55mAlaska Airlines
Wed 2/2511:46 amSTL - STS
2 stops12h 06mAlaska Airlines
Deal found 12/23![Alaska Airlines logo]()
$511
Find flight deals from Santa Rosa to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Santa Rosa (STS) to St. Louis (STL). 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 December 25, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $387 (Alaska Airlines) |
Popular in | December |
Cheapest in | February |
Average price | $529 |
Cheapflights Fare Finder
Customize your flight search to find flights from Santa Rosa to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 25, 2025.
Use the filters below to find and compare flights from Santa Rosa to St. Louis that are best for you.
Fly from
Santa Rosa
Fly to
St. Louis
Route
Depart
Return
Price
Santa RosaSt. Louis
STS - STL
STSSTL
Santa Rosa Sonoma County
Mon 3/16
7:57 pm-1:51 pm
1 stop15h 54m
Lambert-St Louis
Sat 3/21
5:30 pm-6:01 pm
1 stop26h 31m
$387
Santa RosaSt. Louis
STS - STL
STSSTL
Santa Rosa Sonoma County
Tue 2/24
7:57 pm-8:52 am
2 stops10h 55m
Lambert-St Louis
Wed 2/25
11:46 am-9:52 pm
2 stops12h 06m
$511
Compare providers for flights from Santa Rosa to St. Louis
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Santa Rosa to St. Louis in December.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Santa Rosa-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Santa Rosa-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Santa Rosa-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Santa Rosa-St. Louis flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Santa Rosa-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Santa Rosa to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Santa Rosa with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Santa Rosa to St. Louis
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated December 25, 2025.
Get a feel of what it's like to fly with American Airlines from Santa Rosa to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
6.9
Crew
8.0
Food
6.5
Boarding
7.5
Overall
7.2
Comfort
7.2
Reviews
1 / 20
10.0
ExcellentJeremy,Dec 2025
OKC - CLT
Entertainment
6.9
Crew
8.0
Food
6.5
Boarding
7.5
Overall
7.2
Comfort
7.2
Reviews
1 / 20
10.0
ExcellentJeremy,Dec 2025
OKC - CLT
Related info for your journey
Find useful and relevant information for your journey from Santa Rosa to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus
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Alternative routes for Santa Rosa to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Santa Rosa to St. Louis
Discover the top airline that operate flights from Santa Rosa to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 25, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$338 | Average$625 | FlexibilityNo cancel fee | On-time71% |