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Cheap flights from Santa Rosa to St. Louis from $165

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Santa Rosa to St. Louis departing on 9/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Santa Rosa to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
12:56 pm - 9:48 pm
STS
-
STL
6h 52m
1 stop
American Airlines Logo
8:00 am - 12:26 pm
STL
-
STS
6h 26m
1 stop
$319American Airlines
Thu, Sep 10 - Tue, Sep 15
American Airlines Logo
12:56 pm - 9:48 pm
STS
-
STL
6h 52m
1 stop
American Airlines Logo
5:43 am - 12:26 pm
STL
-
STS
8h 43m
2 stops
$324American Airlines
Thu, Sep 10 - Tue, Sep 15
American Airlines Logo
12:56 pm - 12:27 am
STS
-
STL
9h 31m
2 stops
American Airlines Logo
5:43 am - 12:26 pm
STL
-
STS
8h 43m
2 stops
$329American Airlines
Thu, Sep 10 - Tue, Sep 15
Southwest Logo
3:05 pm - 10:50 pm
STS
-
STL
5h 45m
1 stop
Southwest Logo
5:20 am - 11:05 am
STL
-
STS
7h 45m
1 stop
$332Southwest
Sat, Oct 17 - Tue, Oct 20
Southwest Logo
3:05 pm - 10:50 pm
STS
-
STL
5h 45m
1 stop
Southwest Logo
3:20 pm - 11:15 pm
STL
-
STS
9h 55m
2 stops
$337Southwest
Sat, Oct 17 - Mon, Oct 19
Alaska Airlines Logo
8:07 am - 5:10 pm
STS
-
STL
7h 03m
1 stop
Alaska Airlines Logo
6:35 am - 12:43 pm
STL
-
STS
8h 08m
1 stop
$355Alaska Airlines
Wed, Aug 19 - Mon, Aug 24
Alaska Airlines Logo
7:03 am - 6:38 pm
STS
-
STL
9h 35m
1 stop
Alaska Airlines Logo
6:08 pm - 9:15 am
STL
-
STS
17h 07m
1 stop
$387Alaska Airlines
Thu, Sep 3 - Mon, Sep 7
Alaska Airlines Logo
7:03 am - 6:38 pm
STS
-
STL
9h 35m
1 stop
Alaska Airlines Logo
6:29 am - 11:54 pm
STL
-
STS
19h 25m
2 stops
$390Alaska Airlines
Wed, Sep 16 - Wed, Sep 23
Alaska Airlines Logo
6:47 pm - 5:10 pm
STS
-
STL
20h 23m
2 stops
Alaska Airlines Logo
6:29 am - 11:54 pm
STL
-
STS
19h 25m
2 stops
$393Alaska Airlines
Wed, Sep 16 - Wed, Sep 23
Southwest Logo
6:05 am - 6:20 pm
STS
-
STL
10h 15m
2 stops
Southwest Logo
6:25 am - 2:20 pm
STL
-
STS
9h 55m
2 stops
$397Southwest
Thu, Sep 3 - Mon, Sep 7

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American Airlines flights from Santa Rosa to St. Louis

Our best American Airlines deals on Santa Rosa to St. Louis flight tickets
American Airlines
Sep 10
STS12:56 pmSanta Rosa Sonoma County
6h 52m
1 stop
STL9:48 pmLambert-St Louis
Sep 15
STL8:00 amLambert-St Louis
6h 26m
1 stop
STS12:26 pmSanta Rosa Sonoma County
$319
American Airlines
Sep 10
STS12:56 pmSanta Rosa Sonoma County
6h 52m
1 stop
STL9:48 pmLambert-St Louis
Sep 15
STL5:43 amLambert-St Louis
8h 43m
2 stops
STS12:26 pmSanta Rosa Sonoma County
$324
American Airlines
Sep 10
STS12:56 pmSanta Rosa Sonoma County
9h 31m
2 stops
STL12:27 amLambert-St Louis
Sep 15
STL5:43 amLambert-St Louis
8h 43m
2 stops
STS12:26 pmSanta Rosa Sonoma County
$329

Southwest flights from Santa Rosa to St. Louis

Our best Southwest deals on Santa Rosa to St. Louis flight tickets
Southwest
Oct 17
STS3:05 pmSanta Rosa Sonoma County
5h 45m
1 stop
STL10:50 pmLambert-St Louis
Oct 20
STL5:20 amLambert-St Louis
7h 45m
1 stop
STS11:05 amSanta Rosa Sonoma County
$332
Southwest
Oct 17
STS3:05 pmSanta Rosa Sonoma County
5h 45m
1 stop
STL10:50 pmLambert-St Louis
Oct 19
STL3:20 pmLambert-St Louis
9h 55m
2 stops
STS11:15 pmSanta Rosa Sonoma County
$337
Southwest
Sep 3
STS6:05 amSanta Rosa Sonoma County
10h 15m
2 stops
STL6:20 pmLambert-St Louis
Sep 7
STL6:25 amLambert-St Louis
9h 55m
2 stops
STS2:20 pmSanta Rosa Sonoma County
$397

momondo 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, momondo users made 832,500 searches. Data last updated July 12, 2026.
Use the filters below to find and compare flights from Santa Rosa to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 9/10

12:56 pm-9:48 pm

1 stop6h 52m

Lambert-St Louis

Tue 9/15

8:00 am-12:26 pm

1 stop6h 26m

$319

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 9/10

12:56 pm-9:48 pm

1 stop6h 52m

Lambert-St Louis

Tue 9/15

5:43 am-12:26 pm

2 stops8h 43m

$324

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 9/10

12:56 pm-12:27 am

2 stops9h 31m

Lambert-St Louis

Tue 9/15

5:43 am-12:26 pm

2 stops8h 43m

$329

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Sat 10/17

3:05 pm-10:50 pm

1 stop5h 45m

Lambert-St Louis

Tue 10/20

5:20 am-11:05 am

1 stop7h 45m

$332

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Sat 10/17

3:05 pm-10:50 pm

1 stop5h 45m

Lambert-St Louis

Mon 10/19

3:20 pm-11:15 pm

2 stops9h 55m

$337

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Wed 8/19

8:07 am-5:10 pm

1 stop7h 03m

Lambert-St Louis

Mon 8/24

6:35 am-12:43 pm

1 stop8h 08m

$355

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 9/3

7:03 am-6:38 pm

1 stop9h 35m

Lambert-St Louis

Mon 9/7

6:08 pm-9:15 am

1 stop17h 07m

$387

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Wed 9/16

7:03 am-6:38 pm

1 stop9h 35m

Lambert-St Louis

Wed 9/23

6:29 am-11:54 pm

2 stops19h 25m

$390

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Wed 9/16

6:47 pm-5:10 pm

2 stops20h 23m

Lambert-St Louis

Wed 9/23

6:29 am-11:54 pm

2 stops19h 25m

$393

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 9/3

6:05 am-6:20 pm

2 stops10h 15m

Lambert-St Louis

Mon 9/7

6:25 am-2:20 pm

2 stops9h 55m

$397

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Santa Rosa to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $498. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $629. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Santa Rosa at noon is the least expensive time of day to depart. momondo users have found prices as low as $487 when looking at flights departing at noon. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $972 per ticket.

When to book flights from Santa Rosa to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Santa Rosa to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Santa Rosa to St. Louis (STS to STL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Santa Rosa to St. Louis

Fastest flight time

6h 52m

Direct flights

None
The fastest flight from Santa Rosa to St. Louis takes 6h 52m
There are no direct flights from Santa Rosa to St. Louis. There are no popular flight routes from Santa Rosa to St. Louis.
Search flight deals

Frequently asked questions about flying from Santa Rosa to St. Louis

  • How far is Santa Rosa Sonoma County to Lambert-St Louis by plane?

    The straight-line distance from Santa Rosa Sonoma County to Lambert-St Louis is 1746.9 mi. A reasonable flight in good conditions will take 6h 52m.

  • When did momondo last update prices for flights from Santa Rosa Sonoma County Airport to Lambert-St Louis Airport?

    Prices for flights from Santa Rosa Sonoma County Airport to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Santa Rosa Sonoma County Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Santa Rosa Sonoma County Airport to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Santa Rosa Sonoma County Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Santa Rosa to St. Louis?

Best airlines flying from Santa Rosa to St. Louis

Compare and see reviews for airlines that fly from Santa Rosa to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $481Free CancellationRating
7.1
11,804 reviews
Search American Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
Collinsville
Florissant
St. Peters
Maryland Heights
O'Fallon
Alton
Farmington
Wentzville
Clayton
Fenton
Festus
Eureka
Edwardsville
Litchfield
Grafton
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from Santa Rosa to St. Louis?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Santa Rosa to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Santa Rosa to St. Louis with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to St. Louis from Santa Rosa with this policy.

How can momondo help me find flights from Santa Rosa to St. Louis?

momondo helps you find the best flight between Santa Rosa and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Santa Rosa to St. Louis right now. Can momondo alert me if prices change?

Price alerts on flights to St. Louis from Santa Rosa are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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