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Cheap flights from St. Louis to San Francisco from $326

This is the cheapest round-trip 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 3/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

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Alaska Airlines Logo
2:55 pm - 10:53 pmSTL-STS
9h 58m1 stop
Alaska Airlines Logo
8:00 am - 11:56 pmSTS-STL
13h 56m2 stops
$326Alaska Airlines
Find Deal
Tue, Mar 3 - Wed, Mar 4
Alaska Airlines Logo
7:00 am - 10:35 pmSTL-STS
17h 35m2 stops
Alaska Airlines Logo
8:00 am - 11:56 pmSTS-STL
13h 56m2 stops
$333Alaska Airlines
Find Deal
Tue, Mar 3 - Wed, Mar 4
Alaska Airlines Logo
7:00 am - 1:26 pmSTL-STS
8h 26m1 stop
Alaska Airlines Logo
8:03 pm - 11:59 pmSTS-STL
25h 56m2 stops
$336Alaska Airlines
Find Deal
Wed, Nov 12 - Sat, Nov 15
Alaska Airlines Logo
2:55 pm - 10:53 pmSTL-STS
9h 58m1 stop
Alaska Airlines Logo
7:59 pm - 1:52 pmSTS-STL
15h 53m1 stop
$340Alaska Airlines
Find Deal
Tue, Mar 3 - Wed, Mar 4
Alaska Airlines Logo
7:00 am - 7:23 pmSTL-STS
14h 23m2 stops
Alaska Airlines Logo
8:03 pm - 11:59 pmSTS-STL
25h 56m2 stops
$343Alaska Airlines
Find Deal
Wed, Nov 12 - Sat, Nov 15
Alaska Airlines Logo
7:00 am - 12:56 pmSTL-STS
31h 56m2 stops
Alaska Airlines Logo
11:18 am - 11:56 pmSTS-STL
10h 38m1 stop
$348Alaska Airlines
Find Deal
Wed, Feb 18 - Sat, Feb 21
Alaska Airlines Logo
7:00 am - 9:52 pmSTL-STS
16h 52m1 stop
Alaska Airlines Logo
7:00 am - 11:59 pmSTS-STL
14h 59m2 stops
$368Alaska Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11
Alaska Airlines Logo
2:55 pm - 10:33 amSTL-STS
21h 38m1 stop
Alaska Airlines Logo
7:59 pm - 11:56 pmSTS-STL
25h 57m1 stop
$373Alaska Airlines
Find Deal
Wed, Feb 18 - Sat, Feb 21
American Airlines Logo
7:00 am - 12:48 pmSTL-STS
7h 48m1 stop
American Airlines Logo
1:18 pm - 10:58 pmSTS-STL
7h 40m1 stop
$434American Airlines
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Wed, Nov 12 - Sat, Nov 15
American Airlines Logo
7:00 am - 12:48 pmSTL-STS
7h 48m1 stop
American Airlines Logo
4:23 pm - 11:51 pmSTS-STL
5h 28m1 stop
$927American Airlines
Find Deal
Thu, Nov 6 - Sun, Nov 9

Alaska Airlines flights from St. Louis to Santa Rosa

Our best Alaska Airlines deals on St. Louis to Santa Rosa flight tickets
Alaska Airlines
Mar 3
STL2:55 pmLambert-St Louis
9h 58m
1 stop
STS10:53 pmSanta Rosa Sonoma County
Mar 4
STS8:00 amSanta Rosa Sonoma County
13h 56m
2 stops
STL11:56 pmLambert-St Louis
$326
Find similar
Alaska Airlines
Mar 3
STL7:00 amLambert-St Louis
17h 35m
2 stops
STS10:35 pmSanta Rosa Sonoma County
Mar 4
STS8:00 amSanta Rosa Sonoma County
13h 56m
2 stops
STL11:56 pmLambert-St Louis
$333
Find similar
Alaska Airlines
Nov 12
STL7:00 amLambert-St Louis
8h 26m
1 stop
STS1:26 pmSanta Rosa Sonoma County
Nov 15
STS8:03 pmSanta Rosa Sonoma County
25h 56m
2 stops
STL11:59 pmLambert-St Louis
$336
Find similar

American Airlines flights from St. Louis to Santa Rosa

Our best American Airlines deals on St. Louis to Santa Rosa flight tickets
American Airlines
Nov 12
STL7:00 amLambert-St Louis
7h 48m
1 stop
STS12:48 pmSanta Rosa Sonoma County
Nov 15
STS1:18 pmSanta Rosa Sonoma County
7h 40m
1 stop
STL10:58 pmLambert-St Louis
$434
Find similar
American Airlines
Nov 6
STL7:00 amLambert-St Louis
7h 48m
1 stop
STS12:48 pmSanta Rosa Sonoma County
Nov 9
STS4:23 pmSanta Rosa Sonoma County
5h 28m
1 stop
STL11:51 pmLambert-St Louis
$927
Find similar
American Airlines
Dec 25
STL11:41 amLambert-St Louis
14h 37m
2 stops
STS12:18 amSanta Rosa Sonoma County
Dec 31
STS7:00 amSanta Rosa Sonoma County
12h 28m
2 stops
STL9:28 pmLambert-St Louis
$2,070
Find similar

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 October 9, 2025.
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

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Tue 3/3

2:55 pm-10:53 pm

1 stop9h 58m

Santa Rosa Sonoma County

Wed 3/4

8:00 am-11:56 pm

2 stops13h 56m

$326

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Tue 3/3

7:00 am-10:35 pm

2 stops17h 35m

Santa Rosa Sonoma County

Wed 3/4

8:00 am-11:56 pm

2 stops13h 56m

$333

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Wed 11/12

7:00 am-1:26 pm

1 stop8h 26m

Santa Rosa Sonoma County

Sat 11/15

8:03 pm-11:59 pm

2 stops25h 56m

$336

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Tue 3/3

2:55 pm-10:53 pm

1 stop9h 58m

Santa Rosa Sonoma County

Wed 3/4

7:59 pm-1:52 pm

1 stop15h 53m

$340

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Wed 11/12

7:00 am-7:23 pm

2 stops14h 23m

Santa Rosa Sonoma County

Sat 11/15

8:03 pm-11:59 pm

2 stops25h 56m

$343

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Wed 2/18

7:00 am-12:56 pm

2 stops31h 56m

Santa Rosa Sonoma County

Sat 2/21

11:18 am-11:56 pm

1 stop10h 38m

$348

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Thu 12/4

7:00 am-9:52 pm

1 stop16h 52m

Santa Rosa Sonoma County

Thu 12/11

7:00 am-11:59 pm

2 stops14h 59m

$368

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Wed 2/18

2:55 pm-10:33 am

1 stop21h 38m

Santa Rosa Sonoma County

Sat 2/21

7:59 pm-11:56 pm

1 stop25h 57m

$373

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Wed 11/12

7:00 am-12:48 pm

1 stop7h 48m

Santa Rosa Sonoma County

Sat 11/15

1:18 pm-10:58 pm

1 stop7h 40m

$434

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Thu 11/6

7:00 am-12:48 pm

1 stop7h 48m

Santa Rosa Sonoma County

Sun 11/9

4:23 pm-11:51 pm

1 stop5h 28m

$927

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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 day to depart on your flight to Santa Rosa?

Our data shows that Monday is the least expensive day to fly to Santa Rosa. Tickets to fly out on this day can be as low as $623. On the other hand, Saturday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $677.

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

Direct flights

None
There are no direct flights from St. Louis to Santa Rosa. There are no popular flight routes from St. Louis to Santa Rosa.
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  • 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 48m.

  • 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 $346Free CancellationRating
7.2
11,043 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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