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Cheap flights from Santa Rosa to St. Louis from $239

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 10/15. 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
1:09 pm - 11:54 pm
STS
-
STL
8h 45m
1 stop
Alaska Airlines Logo
5:33 pm - 8:54 am
STL
-
STS
17h 21m
1 stop
$440Alaska Airlines
Wed, Jun 3 - Sat, Jun 6
Alaska Airlines Logo
8:07 am - 5:03 pm
STS
-
STL
6h 56m
1 stop
Alaska Airlines Logo
3:00 pm - 9:56 pm
STL
-
STS
8h 56m
1 stop
$445Alaska Airlines
Tue, Sep 1 - Wed, Sep 2
Southwest Logo
7:40 am - 5:40 pm
STS
-
STL
8h 00m
1 stop
Southwest Logo
12:40 pm - 9:30 pm
STL
-
STS
10h 50m
2 stops
$450Southwest
Wed, Oct 14 - Wed, Oct 21
Southwest Logo
7:40 am - 6:55 pm
STS
-
STL
9h 15m
2 stops
Southwest Logo
11:55 am - 9:30 pm
STL
-
STS
11h 35m
2 stops
$455Southwest
Wed, Oct 14 - Wed, Oct 21
American Airlines Logo
12:45 pm - 9:37 pm
STS
-
STL
6h 52m
1 stop
American Airlines Logo
7:04 am - 12:05 pm
STL
-
STS
7h 01m
1 stop
$482American Airlines
Wed, Jun 10 - Mon, Jun 15
Southwest Logo
2:15 pm - 11:45 pm
STS
-
STL
7h 30m
1 stop
Southwest Logo
4:40 pm - 11:35 pm
STL
-
STS
8h 55m
2 stops
$487Southwest
Wed, Jun 10 - Sun, Jun 14
Southwest Logo
6:00 am - 6:25 pm
STS
-
STL
10h 25m
2 stops
Southwest Logo
4:00 pm - 11:30 pm
STL
-
STS
9h 30m
2 stops
$492Southwest
Wed, Jun 10 - Mon, Jun 15
American Airlines Logo
1:03 pm - 11:58 pm
STS
-
STL
8h 55m
1 stop
American Airlines Logo
7:03 am - 12:03 pm
STL
-
STS
7h 00m
1 stop
$498American Airlines
Fri, May 29 - Mon, Jun 1
American Airlines Logo
1:03 pm - 11:59 pm
STS
-
STL
8h 56m
2 stops
American Airlines Logo
7:03 am - 12:03 pm
STL
-
STS
7h 00m
1 stop
$503American Airlines
Fri, May 29 - Mon, Jun 1
American Airlines Logo
12:43 pm - 11:58 pm
STS
-
STL
9h 15m
1 stop
American Airlines Logo
5:29 am - 12:03 pm
STL
-
STS
8h 34m
1 stop
$519American Airlines
Fri, Jul 24 - Mon, Jul 27

American Airlines flights from Santa Rosa to St. Louis

Our best American Airlines deals on Santa Rosa to St. Louis flight tickets
American Airlines
Jun 10
STS12:45 pmSanta Rosa Sonoma County
6h 52m
1 stop
STL9:37 pmLambert-St Louis
Jun 15
STL7:04 amLambert-St Louis
7h 01m
1 stop
STS12:05 pmSanta Rosa Sonoma County
$482
American Airlines
May 29
STS1:03 pmSanta Rosa Sonoma County
8h 55m
1 stop
STL11:58 pmLambert-St Louis
Jun 1
STL7:03 amLambert-St Louis
7h 00m
1 stop
STS12:03 pmSanta Rosa Sonoma County
$498
American Airlines
May 29
STS1:03 pmSanta Rosa Sonoma County
8h 56m
2 stops
STL11:59 pmLambert-St Louis
Jun 1
STL7:03 amLambert-St Louis
7h 00m
1 stop
STS12:03 pmSanta Rosa Sonoma County
$503

Southwest flights from Santa Rosa to St. Louis

Our best Southwest deals on Santa Rosa to St. Louis flight tickets
Southwest
Oct 14
STS7:40 amSanta Rosa Sonoma County
8h 00m
1 stop
STL5:40 pmLambert-St Louis
Oct 21
STL12:40 pmLambert-St Louis
10h 50m
2 stops
STS9:30 pmSanta Rosa Sonoma County
$450
Southwest
Oct 14
STS7:40 amSanta Rosa Sonoma County
9h 15m
2 stops
STL6:55 pmLambert-St Louis
Oct 21
STL11:55 amLambert-St Louis
11h 35m
2 stops
STS9:30 pmSanta Rosa Sonoma County
$455
Southwest
Jun 10
STS2:15 pmSanta Rosa Sonoma County
7h 30m
1 stop
STL11:45 pmLambert-St Louis
Jun 14
STL4:40 pmLambert-St Louis
8h 55m
2 stops
STS11:35 pmSanta Rosa Sonoma County
$487

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 May 13, 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

Wed 6/3

1:09 pm-11:54 pm

1 stop8h 45m

Lambert-St Louis

Sat 6/6

5:33 pm-8:54 am

1 stop17h 21m

$440

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Tue 9/1

8:07 am-5:03 pm

1 stop6h 56m

Lambert-St Louis

Wed 9/2

3:00 pm-9:56 pm

1 stop8h 56m

$445

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Wed 10/14

7:40 am-5:40 pm

1 stop8h 00m

Lambert-St Louis

Wed 10/21

12:40 pm-9:30 pm

2 stops10h 50m

$450

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Wed 10/14

7:40 am-6:55 pm

2 stops9h 15m

Lambert-St Louis

Wed 10/21

11:55 am-9:30 pm

2 stops11h 35m

$455
Quickest round-trip

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Wed 6/10

12:45 pm-9:37 pm

1 stop6h 52m

Lambert-St Louis

Mon 6/15

7:04 am-12:05 pm

1 stop7h 01m

$482

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Wed 6/10

2:15 pm-11:45 pm

1 stop7h 30m

Lambert-St Louis

Sun 6/14

4:40 pm-11:35 pm

2 stops8h 55m

$487

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Wed 6/10

6:00 am-6:25 pm

2 stops10h 25m

Lambert-St Louis

Mon 6/15

4:00 pm-11:30 pm

2 stops9h 30m

$492

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Fri 5/29

1:03 pm-11:58 pm

1 stop8h 55m

Lambert-St Louis

Mon 6/1

7:03 am-12:03 pm

1 stop7h 00m

$498

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Fri 5/29

1:03 pm-11:59 pm

2 stops8h 56m

Lambert-St Louis

Mon 6/1

7:03 am-12:03 pm

1 stop7h 00m

$503

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Fri 7/24

12:43 pm-11:58 pm

1 stop9h 15m

Lambert-St Louis

Mon 7/27

5:29 am-12:03 pm

1 stop8h 34m

$519

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 $460. 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 $591. 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 $399 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 $891 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 56m

Direct flights

None
The fastest flight from Santa Rosa to St. Louis takes 6h 56m
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 56m.

  • 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
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Alton
Wentzville
Fenton
Farmington
Festus
Clayton
Eureka
Litchfield
Edwardsville
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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