HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Santa Rosa

$276+ 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
STL — STS
Apr 30 — May 71
Thu 4/30
Thu 5/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Santa Rosa with Cheapflights

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 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 March 31, 2026.

This American Airlines deal was found by Cheapflights users on 3/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/167:05 am
STL
-
STS
2 stops10h 48m
American Airlines
Wed 5/204:23 pm
STS
-
STL
1 stop5h 49m
American Airlines
Deal found 3/26$386
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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.
Sat 5/165:33 pm
STL
-
STS
1 stop17h 21m
Alaska Airlines
Wed 5/201:09 pm
STS
-
STL
1 stop8h 45m
Alaska Airlines
Deal found 3/26$392
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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 5/155:33 pm
STL
-
STS
1 stop7h 57m
Alaska Airlines
Wed 5/201:09 pm
STS
-
STL
1 stop8h 45m
Alaska Airlines
Deal found 3/26$401
This American Airlines deal was found by Cheapflights users on 3/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/255:20 am
STL
-
STS
2 stops12h 33m
American Airlines
Sat 5/212:56 pm
STS
-
STL
2 stops8h 01m
American Airlines
Deal found 3/26$411
This Alaska Airlines deal was found by Cheapflights users on 3/30. 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 5/205:33 pm
STL
-
STS
1 stop7h 57m
Alaska Airlines
Sat 5/231:17 pm
STS
-
STL
1 stop8h 37m
Alaska Airlines
Deal found 3/30$425

Find 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 March 31, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$386
(American Airlines)

One-way from

$276
(Alaska Airlines)

Popular in

April

Cheapest in

February

Average price

$588
Provider with most accurate pricing for Lambert-St Louis-Santa Rosa Sonoma County flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Santa Rosa Sonoma County flights.
Search Deals
From Lambert-St Louis to Santa Rosa Sonoma County
Search Deals
One-way flight from Lambert-St Louis to Santa Rosa Sonoma County
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 31, 2026.
Use the filters below to find and compare flights from St. Louis to Santa Rosa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Fri 5/15

5:33 pm-11:30 pm

1 stop7h 57m

Santa Rosa Sonoma County

Wed 5/20

1:09 pm-11:54 pm

1 stop8h 45m

$401

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Sat 5/16

5:33 pm-8:54 am

1 stop17h 21m

Santa Rosa Sonoma County

Wed 5/20

1:09 pm-11:54 pm

1 stop8h 45m

$405

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Wed 4/29

7:00 am-8:48 pm

2 stops15h 48m

Santa Rosa Sonoma County

Mon 5/4

7:46 pm-3:50 pm

1 stop18h 04m

$475

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Tue 5/5

4:46 pm-10:01 am

2 stops19h 15m

Santa Rosa Sonoma County

Wed 5/6

1:13 pm-11:59 pm

1 stop8h 46m

$480
Cheapest one-way
Quickest one-way

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Sun 7/19

5:33 pm-11:30 pm

1 stop7h 57m

$276

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Sun 7/19

6:30 am-7:29 pm

3 stops38h 59m

$691

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/28

Sorted by cheapest first

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*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 FlightHub the most. FlightHub 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, July is the cheapest month in which you can book a flight from St. Louis to Santa Rosa (average of $118). 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.

How much does it cost to fly round-trip from St. Louis to Santa Rosa?

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 March 31, 2026.
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
7.1
Good
11,543 reviews

Food

6.4

Entertainment

6.9

Boarding

7.5

Overall

7.1

Crew

7.9

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes
American Airlines
7.1
Good
11,543 reviews
American Airlines
7.1
Good
11,543 reviews

Food

6.4

Entertainment

6.9

Boarding

7.5

Overall

7.1

Crew

7.9

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes

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 7h 57m. 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 $466, was found to be the cheapest airline from St. Louis to Santa Rosa.. American Airlines is currently priced 27% 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, July is the cheapest month in which you can book a flight from St. Louis to Santa Rosa (average of $118). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Santa Rosa

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Las Vegas flights
Kansas City to Las Vegas flights
Kansas City to Los Angeles flights
St. Louis to Los Angeles flights
St. Louis to San Francisco flights
Kansas City to San Francisco flights
St. Louis to San Diego flights
Kansas City to San Diego flights
Kansas City to Ontario flights
Kansas City to Santa Ana flights
St. Louis to Ontario flights
Kansas City to Sacramento flights
St. Louis to Reno flights
St. Louis to San Jose flights
St. Louis to Sacramento flights
St. Louis to Santa Ana flights
St. Louis to Oakland flights
Springfield to Los Angeles flights
Springfield to Las Vegas flights
Kansas City to Oakland flights
Kansas City to Reno flights
Kansas City to San Jose flights
St. Louis to Burbank flights
St. Louis to Fresno flights
Kansas City to Burbank flights
Springfield to Ontario flights
Kansas City to Fresno flights
St. Louis to Long Beach flights
Kansas City to Santa Barbara flights
Columbia to Las Vegas flights
Kansas City to Monterey flights
Kansas City to Palm Springs flights
Springfield to San Jose flights
Springfield to San Diego flights
Columbia to Los Angeles flights
Springfield to Sacramento flights
Springfield to San Francisco flights
St. Louis to Medford flights
Springfield to San Luis Obispo flights
Springfield to Santa Ana flights
Kansas City to Long Beach flights
Joplin to Las Vegas flights
Columbia to San Francisco flights
St. Louis to San Luis Obispo flights
St. Louis to Santa Barbara flights
St. Louis to Palm Springs flights
Springfield to Reno flights
Kansas City to Santa Rosa flights
Kansas City to San Luis Obispo flights
Springfield to Monterey flights

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 March 31, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$466Average$638FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.