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St. Louis

$316+ 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 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
STS — STL
feb. 25 — mar. 41
mié. 2/25
mié. 3/4
1 adult, Economy
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Cheap flight deals from Santa Rosa to St. Louis

Cheapest flights from Santa Rosa to St. Louis
Explore the most affordable flight options available from Santa Rosa to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 26, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/25. 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.
jue. 2/267:57 pm
STS
-
STL
1 stop15h 54m
Alaska Airlines
mié. 3/47:00 am
STL
-
STS
1 stop16h 52m
Alaska Airlines
Deal found 1/25$316
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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.
vie. 4/176:53 pm
STS
-
STL
1 stop27h 06m
Alaska Airlines
lun. 4/207:00 am
STL
-
STS
2 stops18h 59m
Alaska Airlines
Deal found 1/25$388
This Alaska Airlines deal was found by Cheapflights users on 1/24. 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.
mié. 2/257:00 am
STS
-
STL
2 stops28h 51m
Alaska Airlines
sáb. 2/282:47 pm
STL
-
STS
1 stop9h 05m
Alaska Airlines
Deal found 1/24$396
This Alaska Airlines deal was found by Cheapflights users on 1/26. 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.
jue. 2/197:57 pm
STS
-
STL
1 stop26h 02m
Alaska Airlines
mar. 2/247:00 am
STL
-
STS
1 stop29h 32m
Alaska Airlines
Deal found 1/26$398
This Alaska Airlines deal was found by Cheapflights users on 1/26. 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.
mar. 2/247:57 pm
STS
-
STL
1 stop15h 54m
Alaska Airlines
sáb. 2/282:47 pm
STL
-
STS
1 stop9h 05m
Alaska Airlines
Deal found 1/26$401
This Alaska Airlines deal was found by Cheapflights users on 1/26. 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.
mar. 2/247:57 pm
STS
-
STL
1 stop15h 54m
Alaska Airlines
jue. 2/267:00 am
STL
-
STS
2 stops18h 57m
Alaska Airlines
Deal found 1/26$403
This Alaska Airlines deal was found by Cheapflights users on 1/26. 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.
vie. 2/207:57 pm
STS
-
STL
1 stop15h 54m
Alaska Airlines
mié. 2/257:00 am
STL
-
STS
1 stop16h 52m
Alaska Airlines
Deal found 1/26$408
This Alaska Airlines deal was found by Cheapflights users on 1/26. 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.
jue. 2/197:57 pm
STS
-
STL
1 stop26h 02m
Alaska Airlines
jue. 2/267:00 am
STL
-
STS
1 stop18h 50m
Alaska Airlines
Deal found 1/26$413
This Alaska Airlines deal was found by Cheapflights users on 1/26. 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.
jue. 2/197:57 pm
STS
-
STL
1 stop26h 02m
Alaska Airlines
sáb. 2/282:47 pm
STL
-
STS
1 stop9h 05m
Alaska Airlines
Deal found 1/26$416

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 enero 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$316
(Alaska Airlines)

Popular in

December

Cheapest in

February

Average price

$420
Provider with most accurate pricing for Santa Rosa Sonoma County-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Santa Rosa Sonoma County-Lambert-St Louis flights.
Search Deals
From Santa Rosa Sonoma County to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($58 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 enero 26, 2026.
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

jue. 2/26

7:57 pm-1:51 pm

1 stop15h 54m

Lambert-St Louis

mié. 3/4

7:00 am-9:52 pm

1 stop16h 52m

$316

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

vie. 4/17

6:53 pm-11:59 pm

1 stop27h 06m

Lambert-St Louis

lun. 4/20

7:00 am-11:59 pm

2 stops18h 59m

$388

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

mié. 2/25

7:00 am-1:51 pm

2 stops28h 51m

Lambert-St Louis

sáb. 2/28

2:47 pm-9:52 pm

1 stop9h 05m

$396

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

jue. 2/19

7:57 pm-11:59 pm

1 stop26h 02m

Lambert-St Louis

mié. 2/25

7:00 am-9:52 pm

1 stop16h 52m

$398

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

jue. 4/16

6:53 pm-11:59 pm

1 stop27h 06m

Lambert-St Louis

lun. 4/20

7:00 am-11:59 pm

2 stops18h 59m

$398

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

jue. 2/19

7:57 pm-11:59 pm

1 stop26h 02m

Lambert-St Louis

jue. 2/26

7:00 am-11:50 pm

1 stop18h 50m

$413

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

dom. 2/8

10:36 am-8:37 pm

1 stop8h 01m

$400

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

dom. 2/8

4:09 pm-1:54 pm

2 stops19h 45m

$503

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

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 January.
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 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 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 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

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

Currently, February is the cheapest month in which you can book a flight from Santa Rosa to St. Louis (average of $91). Flying from Santa Rosa to St. Louis in July is currently the most expensive (average of $256). 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.

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.

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

    Airlines like Alaska Airlines fly from Santa Rosa to St. Louis in about 15h 54m. The time it takes to get you to your destination can typically vary by up to . The distance from Santa Rosa to St. Louis is about 1741 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Santa Rosa to St. Louis 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 Santa Rosa to St. Louis?

    Currently, February is the cheapest month in which you can book a flight from Santa Rosa to St. Louis (average of $91). Flying from Santa Rosa to St. Louis in July is currently the most expensive (average of $256). 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

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