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Cheap flights from St. Louis to San Francisco from $213

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to San Francisco departing on 4/22. 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

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
5:33 pm - 8:54 am
STL
-
STS
17h 21m
1 stop
Alaska Airlines Logo
1:09 pm - 11:54 pm
STS
-
STL
8h 45m
1 stop
$367Alaska Airlines
Sat, May 16 - Wed, May 20
Alaska Airlines Logo
5:33 pm - 12:25 pm
STL
-
STS
20h 52m
2 stops
Alaska Airlines Logo
1:09 pm - 11:54 pm
STS
-
STL
8h 45m
1 stop
$385Alaska Airlines
Fri, May 15 - Wed, May 20
Alaska Airlines Logo
5:33 pm - 8:54 am
STL
-
STS
17h 21m
1 stop
Alaska Airlines Logo
1:09 pm - 11:54 pm
STS
-
STL
8h 45m
1 stop
$393Alaska Airlines
Sat, May 16 - Wed, May 20
Alaska Airlines Logo
5:33 pm - 8:54 am
STL
-
STS
17h 21m
1 stop
Alaska Airlines Logo
1:09 pm - 11:54 pm
STS
-
STL
8h 45m
1 stop
$400Alaska Airlines
Fri, May 15 - Wed, May 20
Alaska Airlines Logo
5:33 pm - 12:17 pm
STL
-
STS
20h 44m
2 stops
Alaska Airlines Logo
1:09 pm - 11:54 pm
STS
-
STL
8h 45m
1 stop
$405Alaska Airlines
Sat, May 16 - Wed, May 20
Alaska Airlines Logo
5:33 pm - 12:25 pm
STL
-
STS
20h 52m
2 stops
Alaska Airlines Logo
7:01 am - 11:54 pm
STS
-
STL
14h 53m
2 stops
$424Alaska Airlines
Fri, May 15 - Wed, May 20
Alaska Airlines Logo
5:33 pm - 11:30 pm
STL
-
STS
7h 57m
1 stop
Alaska Airlines Logo
7:50 am - 4:37 pm
STS
-
STL
6h 47m
1 stop
$425Alaska Airlines
Wed, May 20 - Wed, May 27
Alaska Airlines Logo
5:33 pm - 8:54 am
STL
-
STS
17h 21m
1 stop
Alaska Airlines Logo
7:01 am - 11:54 pm
STS
-
STL
14h 53m
2 stops
$431Alaska Airlines
Sat, May 16 - Wed, May 20
American Airlines Logo
5:20 am - 3:53 pm
STL
-
STS
12h 33m
2 stops
American Airlines Logo
12:56 pm - 11:59 pm
STS
-
STL
9h 03m
1 stop
$434American Airlines
Sat, Apr 25 - Sat, May 2
Alaska Airlines Logo
5:33 pm - 11:30 pm
STL
-
STS
7h 57m
1 stop
Alaska Airlines Logo
1:09 pm - 11:54 pm
STS
-
STL
8h 45m
1 stop
$436Alaska Airlines
Fri, May 15 - Wed, May 20

American Airlines flights from St. Louis to Santa Rosa

Our best American Airlines deals on St. Louis to Santa Rosa flight tickets
American Airlines
May 16
STL5:20 amLambert-St Louis
12h 33m
2 stops
STS3:53 pmSanta Rosa Sonoma County
May 20
STS4:23 pmSanta Rosa Sonoma County
5h 49m
1 stop
STL12:12 amLambert-St Louis
$432
American Airlines
Apr 25
STL5:20 amLambert-St Louis
12h 33m
2 stops
STS3:53 pmSanta Rosa Sonoma County
May 2
STS12:56 pmSanta Rosa Sonoma County
9h 03m
1 stop
STL11:59 pmLambert-St Louis
$434
American Airlines
Apr 25
STL5:20 amLambert-St Louis
12h 33m
2 stops
STS3:53 pmSanta Rosa Sonoma County
May 2
STS12:56 pmSanta Rosa Sonoma County
8h 01m
2 stops
STL10:57 pmLambert-St Louis
$439

Southwest flights from St. Louis to Santa Rosa

Our best Southwest deals on St. Louis to Santa Rosa flight tickets
Southwest
Jun 5
STL4:00 pmLambert-St Louis
9h 30m
2 stops
STS11:30 pmSanta Rosa Sonoma County
Jun 9
STS2:15 pmSanta Rosa Sonoma County
7h 30m
1 stop
STL11:45 pmLambert-St Louis
$477
Southwest
Jul 22
STL5:35 amLambert-St Louis
7h 30m
1 stop
STS11:05 amSanta Rosa Sonoma County
Jul 27
STS3:55 pmSanta Rosa Sonoma County
8h 00m
1 stop
STL1:55 amLambert-St Louis
$519
Southwest
Jul 8
STL5:35 amLambert-St Louis
7h 30m
1 stop
STS11:05 amSanta Rosa Sonoma County
Jul 12
STS11:10 amSanta Rosa Sonoma County
10h 25m
1 stop
STL11:35 pmLambert-St Louis
$524

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Santa Rosa 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 March 19, 2026.
Use the filters below to find and compare flights from St. Louis to Santa Rosa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Sat 5/16

5:33 pm-8:54 am

1 stop17h 21m

Santa Rosa Sonoma County

Wed 5/20

1:09 pm-11:54 pm

1 stop8h 45m

$367

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Fri 5/15

5:33 pm-12:25 pm

2 stops20h 52m

Santa Rosa Sonoma County

Wed 5/20

1:09 pm-11:54 pm

1 stop8h 45m

$385

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Sat 5/16

5:33 pm-8:54 am

1 stop17h 21m

Santa Rosa Sonoma County

Wed 5/20

1:09 pm-11:54 pm

1 stop8h 45m

$393

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Fri 5/15

5:33 pm-8:54 am

1 stop17h 21m

Santa Rosa Sonoma County

Wed 5/20

1:09 pm-11:54 pm

1 stop8h 45m

$400

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Sat 5/16

5:33 pm-12:17 pm

2 stops20h 44m

Santa Rosa Sonoma County

Wed 5/20

1:09 pm-11:54 pm

1 stop8h 45m

$405

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Fri 5/15

5:33 pm-12:25 pm

2 stops20h 52m

Santa Rosa Sonoma County

Wed 5/20

7:01 am-11:54 pm

2 stops14h 53m

$424
Quickest round-trip

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Wed 5/20

5:33 pm-11:30 pm

1 stop7h 57m

Santa Rosa Sonoma County

Wed 5/27

7:50 am-4:37 pm

1 stop6h 47m

$425

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Sat 5/16

5:33 pm-8:54 am

1 stop17h 21m

Santa Rosa Sonoma County

Wed 5/20

7:01 am-11:54 pm

2 stops14h 53m

$431

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Sat 4/25

5:20 am-3:53 pm

2 stops12h 33m

Santa Rosa Sonoma County

Sat 5/2

12:56 pm-11:59 pm

1 stop9h 03m

$434

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Fri 5/15

5:33 pm-11:30 pm

1 stop7h 57m

Santa Rosa Sonoma County

Wed 5/20

1:09 pm-11:54 pm

1 stop8h 45m

$436

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 San Francisco from

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

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 airline that flies from Lambert-St Louis to Santa Rosa Sonoma County?

Southwest, American Airlines, and Alaska Airlines are the most popular carriers operating from Lambert-St Louis to Santa Rosa Sonoma County

What airlines fly to Santa Rosa?

Southwest, United Airlines and Frontier are the top three most popular airlines that fly to Santa Rosa from St. Louis according to our data. Southwest is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Santa Rosa. Keep in mind that there are 5 different airlines that fly to Santa Rosa on a routine basis, so you have a few additional options to choose from.

When to book flights from St. Louis to Santa Rosa

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

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

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

Fastest flight time

7h 30m

Direct flights

None
The fastest flight from St. Louis to Santa Rosa takes 7h 30m
There are no direct flights from St. Louis to Santa Rosa. There are no popular flight routes from St. Louis to Santa Rosa.
Search flight deals

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

    A flight from Lambert-St Louis to Santa Rosa Sonoma County will travel around 1746.9 mi. By plane, this route typically takes 7h 30m.

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

    Prices for flights from Lambert-St Louis Airport to Santa Rosa Sonoma County Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Santa Rosa Sonoma County Airport.

  • What documentation or ID do you need to fly to Santa Rosa Sonoma County Airport?

    The travel and health documents you'll need for your trip to Santa Rosa Sonoma County Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Santa Rosa Sonoma County Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from St. Louis to Santa Rosa

Compare and see reviews for airlines that fly from St. Louis to Santa Rosa with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $494Free CancellationRating
7.1
11,480 reviews
Search American Airlines flights

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Fort Bragg
Mendocino
Ukiah
Little River
Point Arena

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Santa Rosa. momondo saves you time and could save you money on your trip.

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

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

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

Once you have performed a search for St. Louis to Santa Rosa flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Santa Rosa from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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