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

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

All the information you need to plan the best STS to STL flight in 2021: compare Santa Rosa to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.
How far in advance should I book a flight from Santa Rosa to St. Louis?

Travelers have found it’s best to book a flight 26 days in advance to save up to 6% 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 26 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 Santa Rosa to St. Louis 1-2 weeks in advance for as low as $352, or $375 for flights within the next 24 hours.

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

When flying from Santa Rosa to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 10% versus a flight at noon.

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

Users have found that leaving on a Wednesday can be a cost-effective option. It’s possible to save up to 37% on your flight compared to booking on days when demand is much higher.

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

August can be a great time to fly to St. Louis from Santa Rosa with a flight ticket averaging about $345. Cheapflights users have found deals in the month of August for as cheap as $133. The most expensive prices can be found in the month of December.

Cheap flights from Santa Rosa to St. Louis in December, January 2022

The best prices found for STS to STL flights for December, January
29 Jan - 2 Feb
$180pp
STS
Santa Rosa Sonoma County
American Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
STS
Santa Rosa Sonoma County
29 Jan - 1 Feb
$185pp
STS
Santa Rosa Sonoma County
American Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
STS
Santa Rosa Sonoma County
19 Jan - 24 Jan
$200pp
STS
Santa Rosa Sonoma County
American Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
STS
Santa Rosa Sonoma County

Santa Rosa Sonoma County to St. Louis 2022 flight deals

Cheap flights to St. Louis from Santa Rosa found for this year
21 Dec - 5 Jan
$418pp
STS
Santa Rosa Sonoma County
American Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
STS
Santa Rosa Sonoma County
21 Dec - 5 Jan
$423pp
STS
Santa Rosa Sonoma County
American Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
   
2 STOPS
STS
Santa Rosa Sonoma County
23 Dec - 5 Jan
$528pp
STS
Santa Rosa Sonoma County
American Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
STS
Santa Rosa Sonoma County

One-way flights to Lambert-St Louis from Santa Rosa

The cheapest one-way flights from Santa Rosa to St. Louis
7:34 am - 3:53 pm
American Airlines
1 Stop
6h 19m
STS - STL
American Airlines
2:00 am - 3:50 pm
United Airlines
3 Stops
11h 50m
STS - STL
United Airlines
$378
United
12:55 pm - 9:03 am
Multiple Airlines
3 Stops
18h 08m
STS - STL
Multiple Airlines
$402
Travelgenio

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Santa Rosa</span> to <span class="emphasized">St. Louis</span> flights.

Flight FAQs

From Santa Rosa to St. Louis

Which airlines flying from Santa Rosa Sonoma County to Lambert-St Louis have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like American Airlines, Sun Country Air, and United Airlines flying from Santa Rosa Sonoma County to Lambert-St Louis have implemented new flexible cancellation policies.

Can I find flights from Santa Rosa to St. Louis for under $200 on Cheapflights?

Yes, there are multiple flights from Santa Rosa to St. Louis for under $200. The cheapest flight booked recently is on American Airlines for just $180, but on average you can expect to pay $421.

What are the cheapest flights from Santa Rosa to St. Louis?

Looking at all options, your cheapest flight can be booked for $244. While the most popular route (Santa Rosa Sonoma County - Lambert-St Louis) can be booked for $180 on average our data indicates $281 when flying from Santa Rosa to St. Louis.

What are the most popular airlines that fly from Santa Rosa to St. Louis?

American Airlines, Sun Country Air and United Airlines are the most popular airlines when flying from Santa Rosa to St. Louis.

COVID Restrictions

View COVID Travel Restrictions for St. Louis, MO

Do I need a COVID test to fly to St. Louis from Santa Rosa?

Information is based on travel restrictions for travel to Lambert-St Louis within the United States

Most visitors from Santa Rosa Sonoma County need to provide a negative COVID-19 test result and/or quarantine to enter Lambert-St Louis.

COVID-19 testing requirements
Visitors from Santa Rosa Sonoma County must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 24 hours before departing to Lambert-St Louis.

Quarantine requirements
Visitors from Santa Rosa Sonoma County are not required to quarantine after entering Lambert-St Louis.

Do I need a test to fly back to Santa Rosa from St. Louis?

Returning to Santa Rosa Sonoma County from Lambert-St Louis

COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 24 hours before departing to Santa Rosa Sonoma County.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Santa Rosa Sonoma County.

Hide COVID Travel Restrictions for St. Louis, MO

Alternative routes for Santa Rosa to St. Louis

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

Destination information for St. Louis

Things to know before you go - useful duration and weather info for your trip from Santa Rosa to St. Louis.
Average temperature for December in St. Louis
46.4 °F
Avg rainfall for December in St. Louis
2.5 ″

Airports servicing Santa Rosa

Airports servicing St. Louis

Top 3 airlines flying from Santa Rosa Sonoma County to Lambert-St Louis

The chart below displays the airlines Cheapflights users traveling from Santa Rosa to St. Louis choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Sun Country Air
$111 $275 No cancel fee 83%
United Airlines
$197 $425 No cancel fee 69%
American Airlines
$250 $528 No cancel fee 71%
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