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Cheap flights from Santa Rosa to St. Louis from $179

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 4/25. 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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0 bags

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Find the cheapest flights from Santa Rosa to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
11:10 am - 11:59 pm
STS
-
STL
10h 49m
1 stop
Alaska Airlines Logo
7:00 am - 6:01 pm
STL
-
STS
13h 01m
1 stop
$393Alaska Airlines
Tue, Apr 14 - Wed, Apr 15
Southwest Logo
6:00 am - 6:05 pm
STS
-
STL
10h 05m
2 stops
Southwest Logo
2:25 pm - 10:40 pm
STL
-
STS
10h 15m
2 stops
$412Southwest
Tue, May 5 - Fri, May 8
Alaska Airlines Logo
11:10 am - 11:59 pm
STS
-
STL
10h 49m
1 stop
Alaska Airlines Logo
7:00 am - 11:13 pm
STL
-
STS
18h 13m
2 stops
$423Alaska Airlines
Tue, Apr 14 - Wed, Apr 15
Southwest Logo
6:00 am - 6:05 pm
STS
-
STL
10h 05m
2 stops
Southwest Logo
6:00 am - 4:00 pm
STL
-
STS
12h 00m
1 stop
$436Southwest
Tue, May 5 - Fri, May 8
Alaska Airlines Logo
11:10 am - 11:59 pm
STS
-
STL
10h 49m
1 stop
Alaska Airlines Logo
7:00 am - 11:59 pm
STL
-
STS
18h 59m
2 stops
$461Alaska Airlines
Tue, Apr 14 - Wed, Apr 15
Southwest Logo
2:15 pm - 9:50 pm
STS
-
STL
5h 35m
1 stop
Southwest Logo
5:40 am - 9:35 am
STL
-
STS
5h 55m
1 stop
$472Southwest
Tue, Jun 9 - Sat, Jun 20
American Airlines Logo
12:56 pm - 11:59 pm
STS
-
STL
9h 03m
1 stop
American Airlines Logo
8:00 am - 3:53 pm
STL
-
STS
9h 53m
1 stop
$474American Airlines
Tue, May 5 - Fri, May 8
Southwest Logo
2:15 pm - 9:50 pm
STS
-
STL
5h 35m
1 stop
Southwest Logo
10:35 pm - 9:35 am
STL
-
STS
13h 00m
1 stop
$477Southwest
Tue, Jun 9 - Fri, Jun 19
Southwest Logo
6:00 am - 9:50 pm
STS
-
STL
13h 50m
2 stops
Southwest Logo
5:40 am - 1:30 pm
STL
-
STS
9h 50m
2 stops
$488Southwest
Tue, Jun 9 - Sat, Jun 20
Alaska Airlines Logo
1:09 pm - 11:58 pm
STS
-
STL
8h 49m
1 stop
Alaska Airlines Logo
5:33 pm - 11:30 pm
STL
-
STS
7h 57m
1 stop
$496Alaska Airlines
Wed, Jun 10 - Sat, Jun 20

Alaska Airlines flights from Santa Rosa to St. Louis

Our best Alaska Airlines deals on Santa Rosa to St. Louis flight tickets
Alaska Airlines
Apr 14
STS11:10 amSanta Rosa Sonoma County
10h 49m
1 stop
STL11:59 pmLambert-St Louis
Apr 15
STL7:00 amLambert-St Louis
13h 01m
1 stop
STS6:01 pmSanta Rosa Sonoma County
$393
Alaska Airlines
Apr 14
STS11:10 amSanta Rosa Sonoma County
10h 49m
1 stop
STL11:59 pmLambert-St Louis
Apr 15
STL7:00 amLambert-St Louis
18h 13m
2 stops
STS11:13 pmSanta Rosa Sonoma County
$423
Alaska Airlines
Apr 14
STS11:10 amSanta Rosa Sonoma County
10h 49m
1 stop
STL11:59 pmLambert-St Louis
Apr 15
STL7:00 amLambert-St Louis
18h 59m
2 stops
STS11:59 pmSanta Rosa Sonoma County
$461

Southwest flights from Santa Rosa to St. Louis

Our best Southwest deals on Santa Rosa to St. Louis flight tickets
Southwest
May 5
STS6:00 amSanta Rosa Sonoma County
10h 05m
2 stops
STL6:05 pmLambert-St Louis
May 8
STL2:25 pmLambert-St Louis
10h 15m
2 stops
STS10:40 pmSanta Rosa Sonoma County
$412
Southwest
May 5
STS6:00 amSanta Rosa Sonoma County
10h 05m
2 stops
STL6:05 pmLambert-St Louis
May 8
STL6:00 amLambert-St Louis
12h 00m
1 stop
STS4:00 pmSanta Rosa Sonoma County
$436
Southwest
Jun 9
STS2:15 pmSanta Rosa Sonoma County
5h 35m
1 stop
STL9:50 pmLambert-St Louis
Jun 20
STL5:40 amLambert-St Louis
5h 55m
1 stop
STS9:35 amSanta Rosa Sonoma County
$472

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 March 23, 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

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Tue 4/14

11:10 am-11:59 pm

1 stop10h 49m

Lambert-St Louis

Wed 4/15

7:00 am-6:01 pm

1 stop13h 01m

$393

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Tue 5/5

6:00 am-6:05 pm

2 stops10h 05m

Lambert-St Louis

Fri 5/8

2:25 pm-10:40 pm

2 stops10h 15m

$412

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Tue 4/14

11:10 am-11:59 pm

1 stop10h 49m

Lambert-St Louis

Wed 4/15

7:00 am-11:13 pm

2 stops18h 13m

$423

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Tue 5/5

6:00 am-6:05 pm

2 stops10h 05m

Lambert-St Louis

Fri 5/8

6:00 am-4:00 pm

1 stop12h 00m

$436

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Tue 4/14

11:10 am-11:59 pm

1 stop10h 49m

Lambert-St Louis

Wed 4/15

7:00 am-11:59 pm

2 stops18h 59m

$461
Quickest round-trip

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Tue 6/9

2:15 pm-9:50 pm

1 stop5h 35m

Lambert-St Louis

Sat 6/20

5:40 am-9:35 am

1 stop5h 55m

$472

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Tue 5/5

12:56 pm-11:59 pm

1 stop9h 03m

Lambert-St Louis

Fri 5/8

8:00 am-3:53 pm

1 stop9h 53m

$474

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Tue 6/9

2:15 pm-9:50 pm

1 stop5h 35m

Lambert-St Louis

Fri 6/19

10:35 pm-9:35 am

1 stop13h 00m

$477

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Tue 6/9

6:00 am-9:50 pm

2 stops13h 50m

Lambert-St Louis

Sat 6/20

5:40 am-1:30 pm

2 stops9h 50m

$488

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Wed 6/10

1:09 pm-11:58 pm

1 stop8h 49m

Lambert-St Louis

Sat 6/20

5:33 pm-11:30 pm

1 stop7h 57m

$496

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 $449. 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 Monday because tickets tend to average around $564. 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 $382 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 $636 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

8h 46m

Direct flights

None
The fastest flight from Santa Rosa to St. Louis takes 8h 46m
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

  • 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 8h 46m.

  • 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 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.

Traveling to a place near St. Louis?

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

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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