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Cheap flights from St. Louis to San Francisco from $194

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 8/17. 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 St. Louis to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
6:35 am - 4:39 pm
STL
-
STS
12h 04m
2 stops
Alaska Airlines Logo
6:47 pm - 5:10 pm
STS
-
STL
20h 23m
2 stops
$385Alaska Airlines
Mon, Aug 24 - Mon, Aug 31
Southwest Logo
6:25 am - 12:15 pm
STL
-
STS
7h 50m
1 stop
Southwest Logo
2:55 pm - 12:35 am
STS
-
STL
7h 40m
1 stop
$387Southwest
Mon, Aug 24 - Mon, Aug 31
American Airlines Logo
6:36 am - 12:09 pm
STL
-
STS
7h 33m
1 stop
American Airlines Logo
12:58 pm - 12:14 am
STS
-
STL
9h 16m
2 stops
$392American Airlines
Mon, Aug 24 - Mon, Aug 31
Alaska Airlines Logo
4:42 pm - 9:59 am
STL
-
STS
19h 17m
2 stops
Alaska Airlines Logo
5:06 pm - 3:44 pm
STS
-
STL
20h 38m
1 stop
$441Alaska Airlines
Sat, Oct 3 - Fri, Oct 9
Alaska Airlines Logo
6:08 pm - 9:15 am
STL
-
STS
17h 07m
1 stop
Alaska Airlines Logo
6:47 pm - 5:10 pm
STS
-
STL
20h 23m
2 stops
$445Alaska Airlines
Wed, Aug 19 - Fri, Aug 21
Southwest Logo
6:35 am - 10:35 am
STL
-
STS
6h 00m
1 stop
Southwest Logo
3:10 pm - 10:40 pm
STS
-
STL
5h 30m
1 stop
$458Southwest
Sat, Oct 3 - Fri, Oct 9
Alaska Airlines Logo
4:42 pm - 9:59 am
STL
-
STS
19h 17m
2 stops
Alaska Airlines Logo
6:26 pm - 3:44 pm
STS
-
STL
19h 18m
2 stops
$464Alaska Airlines
Sat, Oct 3 - Fri, Oct 9
Alaska Airlines Logo
6:08 pm - 3:56 pm
STL
-
STS
23h 48m
2 stops
Alaska Airlines Logo
6:47 pm - 5:10 pm
STS
-
STL
20h 23m
2 stops
$468Alaska Airlines
Wed, Aug 19 - Fri, Aug 21
Alaska Airlines Logo
6:08 pm - 9:15 am
STL
-
STS
17h 07m
1 stop
Alaska Airlines Logo
7:03 am - 6:38 pm
STS
-
STL
9h 35m
1 stop
$478Alaska Airlines
Wed, Aug 19 - Fri, Aug 21
Alaska Airlines Logo
8:00 am - 2:22 pm
STL
-
STS
8h 22m
1 stop
Alaska Airlines Logo
6:40 am - 8:19 pm
STS
-
STL
11h 39m
2 stops
$492Alaska Airlines
Tue, Nov 3 - Wed, Nov 4

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Alaska Airlines flights from St. Louis to Santa Rosa

Our best Alaska Airlines deals on St. Louis to Santa Rosa flight tickets
Alaska Airlines
Aug 24
STL6:35 amLambert-St Louis
12h 04m
2 stops
STS4:39 pmSanta Rosa Sonoma County
Aug 31
STS6:47 pmSanta Rosa Sonoma County
20h 23m
2 stops
STL5:10 pmLambert-St Louis
$385
Alaska Airlines
Oct 3
STL4:42 pmLambert-St Louis
19h 17m
2 stops
STS9:59 amSanta Rosa Sonoma County
Oct 9
STS5:06 pmSanta Rosa Sonoma County
20h 38m
1 stop
STL3:44 pmLambert-St Louis
$441
Alaska Airlines
Aug 19
STL6:08 pmLambert-St Louis
17h 07m
1 stop
STS9:15 amSanta Rosa Sonoma County
Aug 21
STS6:47 pmSanta Rosa Sonoma County
20h 23m
2 stops
STL5:10 pmLambert-St Louis
$445

Southwest flights from St. Louis to Santa Rosa

Our best Southwest deals on St. Louis to Santa Rosa flight tickets
Southwest
Aug 24
STL6:25 amLambert-St Louis
7h 50m
1 stop
STS12:15 pmSanta Rosa Sonoma County
Aug 31
STS2:55 pmSanta Rosa Sonoma County
7h 40m
1 stop
STL12:35 amLambert-St Louis
$387
Southwest
Oct 3
STL6:35 amLambert-St Louis
6h 00m
1 stop
STS10:35 amSanta Rosa Sonoma County
Oct 9
STS3:10 pmSanta Rosa Sonoma County
5h 30m
1 stop
STL10:40 pmLambert-St Louis
$458
Southwest
Oct 1
STL3:20 pmLambert-St Louis
9h 55m
2 stops
STS11:15 pmSanta Rosa Sonoma County
Oct 4
STS6:10 amSanta Rosa Sonoma County
8h 20m
2 stops
STL4:30 pmLambert-St Louis
$463

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 July 26, 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

Mon 8/24

6:35 am-4:39 pm

2 stops12h 04m

Santa Rosa Sonoma County

Mon 8/31

6:47 pm-5:10 pm

2 stops20h 23m

$385

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Mon 8/24

6:25 am-12:15 pm

1 stop7h 50m

Santa Rosa Sonoma County

Mon 8/31

2:55 pm-12:35 am

1 stop7h 40m

$387

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Mon 8/24

6:36 am-12:09 pm

1 stop7h 33m

Santa Rosa Sonoma County

Mon 8/31

12:58 pm-12:14 am

2 stops9h 16m

$392

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Sat 10/3

4:42 pm-9:59 am

2 stops19h 17m

Santa Rosa Sonoma County

Fri 10/9

5:06 pm-3:44 pm

1 stop20h 38m

$441

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Wed 8/19

6:08 pm-9:15 am

1 stop17h 07m

Santa Rosa Sonoma County

Fri 8/21

6:47 pm-5:10 pm

2 stops20h 23m

$445
Quickest round-trip

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Sat 10/3

6:35 am-10:35 am

1 stop6h 00m

Santa Rosa Sonoma County

Fri 10/9

3:10 pm-10:40 pm

1 stop5h 30m

$458

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Sat 10/3

4:42 pm-9:59 am

2 stops19h 17m

Santa Rosa Sonoma County

Fri 10/9

6:26 pm-3:44 pm

2 stops19h 18m

$464

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Wed 8/19

6:08 pm-3:56 pm

2 stops23h 48m

Santa Rosa Sonoma County

Fri 8/21

6:47 pm-5:10 pm

2 stops20h 23m

$468

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Wed 8/19

6:08 pm-9:15 am

1 stop17h 07m

Santa Rosa Sonoma County

Fri 8/21

7:03 am-6:38 pm

1 stop9h 35m

$478

St. LouisSanta Rosa

STL - STS

STLSTS

Lambert-St Louis

Tue 11/3

8:00 am-2:22 pm

1 stop8h 22m

Santa Rosa Sonoma County

Wed 11/4

6:40 am-8:19 pm

2 stops11h 39m

$492

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?

Alaska Airlines, Southwest, and American 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 41% 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

5h 50m

Direct flights

None
The fastest flight from St. Louis to Santa Rosa takes 5h 50m
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

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

  • 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 5h 50m.

  • 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 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.

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 $466Free CancellationRating
7.1
11,847 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
Ukiah
Mendocino
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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