Cheap flights from St. Louis to Santa Rosa (STL - STS) from $417

This is the cheapest one-way flight price, found on 9/20. Prices may vary by date and flight preferences.
STL — STS
Sep 26 — Oct 31

How to find the cheapest flight from St. Louis (STL) to Santa Rosa (STS)

All the information you need to plan the best STL to STS flight in 2023: compare St. Louis to Santa Rosa flight prices with the expected peak season, weather and rainfall in Santa Rosa.

Popular in

May

Cheapest in

March

Average price

$645

Round-trip from

$258
High demand for flights, 46% potential price rise
Best time to find cheap flights, 41% potential price drop
Average for round-trip flights in September 2023
From Lambert-St Louis to Santa Rosa Sonoma County

STL - SFO

Price

$258 - $437

SFO

Temperature

51.8 - 62.6 °F

SFO

Rainfall

0 - 4.4 inches

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

Flights from St. Louis to Santa Rosa are found to be more expensive on Tuesday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Santa Rosa.

How far in advance should I book a flight from St. Louis to Santa Rosa?

Travelers have found it’s best to book a flight 37 days in advance to save up to 28% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 37 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to Santa Rosa 1-2 weeks in advance for as low as $410, or $490 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to Santa Rosa?

January can be a great time to fly to Santa Rosa from St. Louis with a flight ticket averaging about $415. Cheapflights users have found deals in the month of January for as cheap as $235. The most expensive prices can be found in the month of July.

When is the cheapest time to fly from St. Louis to Santa Rosa (STL - STS)?

When flying from St. Louis to Santa Rosa, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap American Airlines flights from St. Louis to Santa Rosa

Cheap St. Louis to Santa Rosa flights in September & October 2023

The best prices found for STL to STS flights for September, October

St. Louis to Santa Rosa 2023 flight deals

Cheap flights to Santa Rosa from St. Louis found for this year

Find flights from St. Louis to Santa Rosa within your budget

Use the slider to find flights from St. Louis to Santa Rosa that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

$417 - $515

Route

Depart

Return

Price

Lambert-St LouisSanta Rosa Sonoma County

STL - STS

STLSTS

Lambert-St Louis

Sun 10/29

1 stop11h 32m

Santa Rosa Sonoma County

Wed 11/1

1 stop6h 53m

Lambert-St LouisSanta Rosa Sonoma County

STL - STS

STLSTS

Lambert-St Louis

Sun 10/29

2 stops12h 44m

Santa Rosa Sonoma County

Wed 11/1

1 stop9h 10m

Lambert-St LouisSanta Rosa Sonoma County

STL - STS

STLSTS

Lambert-St Louis

Sun 10/29

2 stops12h 44m

Santa Rosa Sonoma County

Wed 11/1

2 stops14h 31m

Lambert-St LouisSanta Rosa Sonoma County

STL - STS

STLSTS

Lambert-St Louis

Thu 10/26

2 stops19h 42m

Santa Rosa Sonoma County

Sun 10/29

2 stops14h 36m

Lambert-St LouisSanta Rosa Sonoma County

STL - STS

STLSTS

Lambert-St Louis

Thu 10/26

1 stop8h 52m

Santa Rosa Sonoma County

Sun 10/29

2 stops14h 31m

Lambert-St LouisSanta Rosa Sonoma County

STL - STS

STLSTS

Lambert-St Louis

Mon 11/20

1 stop8h 50m

Santa Rosa Sonoma County

Tue 11/28

1 stop8h 58m

Lambert-St LouisSanta Rosa Sonoma County

STL - STS

STLSTS

Lambert-St Louis

Mon 11/20

1 stop8h 50m

Santa Rosa Sonoma County

Tue 11/28

2 stops16h 23m

Lambert-St LouisSanta Rosa Sonoma County

STL - STS

STLSTS

Lambert-St Louis

Mon 11/20

1 stop8h 50m

Santa Rosa Sonoma County

Tue 11/28

1 stop22h 37m

Lambert-St LouisSanta Rosa Sonoma County

STL - STS

STLSTS

Lambert-St Louis

Mon 11/20

1 stop8h 50m

Santa Rosa Sonoma County

Tue 11/28

2 stops17h 41m

Flights are sorted by cheapest first

Deals found on 9/20

Reviews of airlines servicing Santa Rosa

American Airlines
7.2
Good
2,635 reviews

Food

6.5

Overall

7.2

Crew

7.9

Entertainment

6.9

Boarding

7.5

Comfort

7.3

Reviews

1 / 10

On time boarding. Smooth flight. Early arrival in Chicago. No problems on the flight.

American Airlines
7.2
Good
2,635 reviews
American Airlines
7.2
Good
2,635 reviews

Food

6.5

Overall

7.2

Crew

7.9

Entertainment

6.9

Boarding

7.5

Comfort

7.3

Reviews

1 / 10

On time boarding. Smooth flight. Early arrival in Chicago. No problems on the flight.

Related info for your journey

Useful info, stats and facts about St. Louis to Santa Rosa flights.

Can I find flights from St. Louis to Santa Rosa for under $500 on Cheapflights?

Yes, there are multiple flights from St. Louis to Santa Rosa for under $500. The cheapest flight booked recently is on American Airlines for just $417, but on average you can expect to pay $521.

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

American Airlines, at $417, was found to be the cheapest airline from St. Louis to Santa Rosa.. American Airlines is currently priced 41% below the average price you’ll pay for this route.

What does STL to STS mean?

Great question - STL to STS just means Lambert-St Louis Airport to Santa Rosa Sonoma County Airport. Now you’ll know what these unique codes when you look for flights!

Alternative routes for St. Louis to Santa Rosa

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from St. Louis to Santa Rosa

The chart below displays the airlines Cheapflights users traveling from St. Louis to Santa Rosa choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$384Average$529FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
American AirlinesCheapest$428Average$608FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
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