St. Louis

$218+ 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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
STS — STL
Jun 21 — Jun 281
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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 June 16, 2025.

Round-trip from

$318
(Hawaiian Airlines)

One-way from

$218
(Alaska Airlines)

Popular in

November

Cheapest in

October

Average price

$557
From Santa Rosa Sonoma County to Lambert-St Louis
One-way flight from Santa Rosa Sonoma County to Lambert-St Louis
Highest demand for flights based on searches. 14% potential increase in price ($110 potential increase over avg. RT price).
Cheapest flight prices on average. 7% potential price decrease ($46 potential savings vs. average RT price).
Average for round-trip flights in June 2025

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 June 16, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 6/16. 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 01mHawaiian Airlines
Deal found 6/16$318
This Alaska Airlines deal was found by Cheapflights users on 6/16. 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 10/17:00 amSTS - STL
1 stop8h 34mAlaska Airlines
Wed 10/83:57 pmSTL - STS
2 stops28h 14mAlaska Airlines
Deal found 6/16$356
This American Airlines deal was found by Cheapflights users on 6/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/271:10 pmSTS - STL
1 stop8h 49mAmerican Airlines
Mon 6/307:20 amSTL - STS
1 stop6h 30mAmerican Airlines
Deal found 6/14$829

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 June 16, 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

7:00 am-5:34 pm

1 stop8h 34m

Lambert-St Louis

Wed 10/8

6:33 am-1:34 pm

1 stop9h 01m

$318

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-6:11 pm

2 stops28h 14m

$356

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Fri 6/27

1:10 pm-11:59 pm

1 stop8h 49m

Lambert-St Louis

Mon 6/30

7:20 am-11:50 am

1 stop6h 30m

$829

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 8/21

7:00 am-5:34 pm

1 stop8h 34m

$218

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Sat 8/23

12:17 pm-8:22 pm

1 stop6h 05m

$290

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

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.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 June 16, 2025.
Read reviews from past customers who have flown Alaska Airlines, Hawaiian Airlines and American Airlines from Santa Rosa to St. Louis. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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

    Hawaiian Airlines, at $318, was found to be the cheapest airline from Santa Rosa to St. Louis.Alternate airlines to your destination round-trip include Alaska Airlines and American Airlines. Users have found that Hawaiian 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 Santa Rosa?

Book flights to Santa Rosa if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Festus
Alton
Farmington

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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 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 June 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$346Average$614FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$432Average$708FlexibilityNo cancel feeOn-time75%

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