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Santa Rosa

$159+ Cheap flights from St. Louis to Santa Rosa (STL - STS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — STS
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Cheap flight deals from St. Louis to Santa Rosa

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 13, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$383
(Alaska Airlines)

One-way from

$159
(Alaska Airlines)

Popular in

April

Cheapest in

December

Average price

$649
Provider with most accurate pricing for Lambert-St Louis-Santa Rosa Sonoma County flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Santa Rosa Sonoma County flights.
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From Lambert-St Louis to Santa Rosa Sonoma County
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One-way flight from Lambert-St Louis to Santa Rosa Sonoma County
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Highest demand for flights based on searches. 11% potential increase in price ($78 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from St. Louis to Santa Rosa

Cheapest flights from St. Louis to Santa Rosa
Explore the most affordable flight options available from St. Louis to Santa Rosa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This Alaska Airlines deal was found by Cheapflights users on 11/13. 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.
Fri 12/53:23 pmSTL - STS
1 stop8h 29mAlaska Airlines
Sun 12/72:21 pmSTS - STL
1 stop7h 38mAlaska Airlines
Deal found 11/13$418
This Alaska Airlines deal was found by Cheapflights users on 11/12. 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.
Thu 12/257:00 amSTL - STS
1 stop8h 32mAlaska Airlines
Wed 12/316:00 amSTS - STL
1 stop8h 26mAlaska Airlines
Deal found 11/12$463
This Alaska Airlines deal was found by Cheapflights users on 11/12. 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.
Thu 11/277:00 amSTL - STS
1 stop8h 49mAlaska Airlines
Mon 12/17:40 pmSTS - STL
2 stops40h 47mAlaska Airlines
Deal found 11/12$684
This Alaska Airlines deal was found by Cheapflights users on 11/12. 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.
Wed 11/197:00 amSTL - STS
2 stops12h 54mAlaska Airlines
Thu 11/202:22 pmSTS - STL
1 stop7h 37mAlaska Airlines
Deal found 11/12$861

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Santa Rosa 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 November 13, 2025.
Use the filters below to find and compare flights from St. Louis to Santa Rosa that are best for you.

Fly from

St. Louis

Fly to

Santa Rosa

Route

Depart

Return

Price

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Fri 12/5

3:23 pm-9:52 pm

1 stop8h 29m

Santa Rosa Sonoma County

Sun 12/7

2:21 pm-11:59 pm

1 stop7h 38m

$418

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Tue 3/3

7:00 am-9:52 pm

1 stop16h 52m

Santa Rosa Sonoma County

Thu 3/5

7:57 pm-11:59 pm

1 stop26h 02m

$422

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Thu 12/25

7:00 am-1:32 pm

1 stop8h 32m

Santa Rosa Sonoma County

Wed 12/31

6:00 am-4:26 pm

1 stop8h 26m

$463

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Thu 11/27

7:00 am-1:49 pm

1 stop8h 49m

Santa Rosa Sonoma County

Mon 12/1

7:40 pm-2:27 pm

2 stops40h 47m

$684

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Tue 12/9

7:00 am-1:29 pm

1 stop8h 29m

$159

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Wed 12/10

7:00 am-1:29 pm

1 stop8h 29m

$159

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Fri 12/12

7:00 am-1:29 pm

1 stop8h 29m

$209

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Mon 12/8

3:23 pm-9:52 pm

1 stop8h 29m

$209

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Thu 12/11

3:23 pm-9:52 pm

1 stop8h 29m

$209

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Wed 11/19

7:00 am-5:54 pm

2 stops12h 54m

$427

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 12 results
1
2

Compare providers for flights from St. Louis to Santa Rosa

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 St. Louis to Santa Rosa in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Santa Rosa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Santa Rosa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Santa Rosa flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Santa Rosa 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 St. Louis-Santa Rosa 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 St. Louis to Santa Rosa

Have a flexible travel schedule? Discover the best time to fly to Santa Rosa from St. Louis 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 St. Louis to Santa Rosa

What is the cheapest month to book a flight from St. Louis to Santa Rosa?

Currently, August is the cheapest month in which you can book a flight from St. Louis to Santa Rosa (average of $123). Flying from St. Louis to Santa Rosa in May is currently the most expensive (average of $246). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Santa Rosa

Get insights into the airlines that provide service to Santa Rosa. 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 Santa Rosa. Reviews last updated November 13, 2025.
Get a feel of what it's like to fly with American Airlines from St. Louis to Santa Rosa by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,050 reviews

Entertainment

6.9

Crew

8.0

Food

6.4

Boarding

7.5

Comfort

7.2

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2024

LHR - SAN

This was the best flight I have experienced in all the years I have been f doing this journey with BA. Flight, food and service A1. Well done BA.
American Airlines
7.2
Good
11,050 reviews
American Airlines
7.2
Good
11,050 reviews

Entertainment

6.9

Crew

8.0

Food

6.4

Boarding

7.5

Comfort

7.2

Overall

7.2

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2024

LHR - SAN

This was the best flight I have experienced in all the years I have been f doing this journey with BA. Flight, food and service A1. Well done BA.

Related info for your journey

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.

  • How long is the flight from St. Louis to Santa Rosa?

    Departing from St. Louis to Santa Rosa will take you 8h 29m. Airlines will cover a distance of 1741 mi.

  • What is the cheapest airline to fly from St. Louis to Santa Rosa round-trip?

    American Airlines, at $346, was found to be the cheapest airline from St. Louis to Santa Rosa.. American Airlines is currently priced 42% below the average price you’ll pay for this route.

  • Can I find deals for flights from St. Louis to Santa Rosa that include hotel bookings?

    Yes. In addition to deals on St. Louis to Santa Rosa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Santa Rosa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Santa Rosa.

  • Can I find deals for business class flights from St. Louis to Santa Rosa?

    Yes. Cheapflights offers flight deals from St. Louis to Santa Rosa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Santa Rosa?

    Currently, August is the cheapest month in which you can book a flight from St. Louis to Santa Rosa (average of $123). Flying from St. Louis to Santa Rosa in May is currently the most expensive (average of $246). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Santa Rosa?

Book flights to Santa Rosa if you plan to visit one of these locations
Fort Bragg
Ukiah

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Alternative routes for St. Louis to Santa Rosa

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Top airline flying from St. Louis to Santa Rosa

Discover the top airline that operate flights from St. Louis to Santa Rosa. 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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$346Average$638FlexibilityNo cancel feeOn-time71%

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