HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$207+ Cheap flights from Santa Rosa to St. Louis (STS - STL)

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 12/27. Fares are subject to change and may not be available on all flights or dates of travel.
STS — STL
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Santa Rosa to St. Louis 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 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 September 15, 2025.

Round-trip from

$511
(Alaska Airlines)

One-way from

$207
(Alaska Airlines)

Popular in

November

Cheapest in

March

Average price

$548
From Santa Rosa Sonoma County to Lambert-St Louis
Search Deals
One-way flight from Santa Rosa Sonoma County to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($207 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find 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 September 15, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 10/13:07 pmSTS - STL
2 stops24h 27mAlaska Airlines
Wed 10/83:57 pmSTL - STS
1 stop8h 09mAlaska Airlines
Deal found 9/15$511
This Hawaiian Airlines deal was found by Cheapflights users on 9/15. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:00 amSTS - STL
1 stop8h 34mHawaiian Airlines
Wed 10/86:33 amSTL - STS
1 stop9h 03mHawaiian Airlines
Deal found 9/15$531
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 10/27:03 amSTS - STL
2 stops14h 56mAlaska Airlines
Sun 10/56:33 amSTL - STS
2 stops28h 30mAlaska Airlines
Deal found 9/14$654

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 September 15, 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

Wed 10/1

3:07 pm-5:34 pm

2 stops24h 27m

Lambert-St Louis

Wed 10/8

3:57 pm-10:06 pm

1 stop8h 09m

$511

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Wed 10/1

7:00 am-5:34 pm

1 stop8h 34m

Lambert-St Louis

Wed 10/8

3:57 pm-10:06 pm

1 stop8h 09m

$531

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 10/2

7:03 am-11:59 pm

2 stops14h 56m

Lambert-St Louis

Sun 10/5

6:33 am-9:03 am

2 stops28h 30m

$654

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Sat 10/4

2:30 pm-12:03 am

1 stop7h 33m

Lambert-St Louis

Sun 10/5

6:33 am-10:06 pm

1 stop17h 33m

$729

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Fri 10/3

7:00 am-5:34 pm

1 stop8h 34m

Lambert-St Louis

Sun 10/5

6:33 am-10:06 pm

1 stop17h 33m

$729

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Sat 12/27

6:00 am-11:45 pm

1 stop15h 45m

$207

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Sun 12/28

6:00 am-11:59 pm

1 stop15h 59m

$243

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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, August is the cheapest month in which you can book a flight from Santa Rosa to St. Louis (average of $311). Flying from Santa Rosa to St. Louis in March is currently the most expensive (average of $356). 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 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 September 15, 2025.
Get a feel of what it's like to fly with Alaska Airlines and 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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 and Hawaiian Airlines fly from Santa Rosa to St. Louis in about 8h 34m. The time it takes to get you to your destination can typically vary by up to 15h 53m. The distance from Santa Rosa to St. Louis is about 1741 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Santa Rosa to St. Louis round-trip?

    American Airlines, at $346, was found to be the cheapest airline from Santa Rosa to St. Louis. An alternate airline flying to your destination would be Alaska Airlines. Users have found that American Airlines is 50% cheaper than the other options available to this destination.

  • 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, August is the cheapest month in which you can book a flight from Santa Rosa to St. Louis (average of $311). Flying from Santa Rosa to St. Louis in March is currently the most expensive (average of $356). 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
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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 Santa Rosa to St. Louis

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

Top 2 airlines flying from Santa Rosa to St. Louis

Discover the top 2 airlines 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$346Average$638FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$450Average$708FlexibilityNo cancel feeOn-time75%

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.