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Cheap flights from Santa Rosa to St. Louis from $212

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 9/9. 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 (STS-STL)

Cheap round-trip flights

Hawaiian Airlines Logo
7:00 am - 5:34 pmSTS-STL
8h 34m1 stop
Hawaiian Airlines Logo
3:57 pm - 10:06 pmSTL-STS
8h 09m1 stop
$318Hawaiian Airlines
Find Deal
Wed, Oct 1 - Wed, Oct 8
Alaska Airlines Logo
7:52 pm - 5:34 pmSTS-STL
19h 42m2 stops
Alaska Airlines Logo
6:33 am - 1:36 pmSTL-STS
9h 03m1 stop
$362Alaska Airlines
Find Deal
Wed, Oct 1 - Wed, Oct 8
Alaska Airlines Logo
2:28 pm - 11:59 pmSTS-STL
7h 31m1 stop
Alaska Airlines Logo
6:00 am - 1:36 pmSTL-STS
9h 36m1 stop
$380Alaska Airlines
Find Deal
Thu, Sep 25 - Tue, Sep 30
Alaska Airlines Logo
6:56 pm - 5:34 pmSTS-STL
20h 38m2 stops
Alaska Airlines Logo
6:00 am - 1:36 pmSTL-STS
9h 36m1 stop
$382Alaska Airlines
Find Deal
Thu, Sep 25 - Tue, Sep 30
Alaska Airlines Logo
7:03 am - 11:59 pmSTS-STL
14h 56m2 stops
Alaska Airlines Logo
6:00 am - 1:36 pmSTL-STS
9h 36m1 stop
$414Alaska Airlines
Find Deal
Thu, Sep 18 - Sat, Sep 20
Alaska Airlines Logo
2:28 pm - 11:59 pmSTS-STL
7h 31m1 stop
Alaska Airlines Logo
6:00 am - 1:36 pmSTL-STS
9h 36m1 stop
$422Alaska Airlines
Find Deal
Thu, Sep 18 - Sat, Sep 20
Alaska Airlines Logo
7:03 am - 11:59 pmSTS-STL
14h 56m2 stops
Alaska Airlines Logo
6:00 am - 11:59 pmSTL-STS
19h 59m2 stops
$425Alaska Airlines
Find Deal
Thu, Sep 18 - Fri, Sep 19
Alaska Airlines Logo
7:03 am - 11:59 pmSTS-STL
14h 56m2 stops
Alaska Airlines Logo
6:30 pm - 8:23 pmSTL-STS
27h 53m1 stop
$430Alaska Airlines
Find Deal
Thu, Sep 18 - Fri, Sep 19
American Airlines Logo
1:00 pm - 11:59 pmSTS-STL
8h 59m1 stop
American Airlines Logo
7:16 am - 3:48 pmSTL-STS
10h 32m2 stops
$644American Airlines
Find Deal
Thu, Sep 18 - Sun, Sep 21
American Airlines Logo
1:00 pm - 11:48 pmSTS-STL
8h 48m2 stops
American Airlines Logo
7:16 am - 3:48 pmSTL-STS
10h 32m2 stops
$649American Airlines
Find Deal
Thu, Sep 18 - Sun, Sep 21

Alaska Airlines flights from Santa Rosa to St. Louis

Our best Alaska Airlines deals on Santa Rosa to St. Louis flight tickets
Alaska Airlines
Oct 1
STS7:52 pmSanta Rosa Sonoma County
19h 42m
2 stops
STL5:34 pmLambert-St Louis
Oct 8
STL6:33 amLambert-St Louis
9h 03m
1 stop
STS1:36 pmSanta Rosa Sonoma County
$362
Find similar
Alaska Airlines
Sep 25
STS2:28 pmSanta Rosa Sonoma County
7h 31m
1 stop
STL11:59 pmLambert-St Louis
Sep 30
STL6:00 amLambert-St Louis
9h 36m
1 stop
STS1:36 pmSanta Rosa Sonoma County
$380
Find similar
Alaska Airlines
Sep 25
STS6:56 pmSanta Rosa Sonoma County
20h 38m
2 stops
STL5:34 pmLambert-St Louis
Sep 30
STL6:00 amLambert-St Louis
9h 36m
1 stop
STS1:36 pmSanta Rosa Sonoma County
$382
Find similar

American Airlines flights from Santa Rosa to St. Louis

Our best American Airlines deals on Santa Rosa to St. Louis flight tickets
American Airlines
Sep 18
STS1:00 pmSanta Rosa Sonoma County
8h 59m
1 stop
STL11:59 pmLambert-St Louis
Sep 21
STL7:16 amLambert-St Louis
10h 32m
2 stops
STS3:48 pmSanta Rosa Sonoma County
$644
Find similar
American Airlines
Sep 18
STS1:00 pmSanta Rosa Sonoma County
8h 48m
2 stops
STL11:48 pmLambert-St Louis
Sep 21
STL7:16 amLambert-St Louis
10h 32m
2 stops
STS3:48 pmSanta Rosa Sonoma County
$649
Find similar

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 August 4, 2025.
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

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Wed 10/1

7:00 am-5:34 pm

1 stop8h 34m

Lambert-St Louis

Wed 10/8

3:57 pm-10:06 pm

1 stop8h 09m

$318

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Wed 10/1

7:52 pm-5:34 pm

2 stops19h 42m

Lambert-St Louis

Wed 10/8

6:33 am-1:36 pm

1 stop9h 03m

$362

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 9/25

2:28 pm-11:59 pm

1 stop7h 31m

Lambert-St Louis

Tue 9/30

6:00 am-1:36 pm

1 stop9h 36m

$380

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 9/25

6:56 pm-5:34 pm

2 stops20h 38m

Lambert-St Louis

Tue 9/30

6:00 am-1:36 pm

1 stop9h 36m

$382

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 9/18

7:03 am-11:59 pm

2 stops14h 56m

Lambert-St Louis

Sat 9/20

6:00 am-1:36 pm

1 stop9h 36m

$414

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 9/18

2:28 pm-11:59 pm

1 stop7h 31m

Lambert-St Louis

Sat 9/20

6:00 am-1:36 pm

1 stop9h 36m

$422

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 9/18

7:03 am-11:59 pm

2 stops14h 56m

Lambert-St Louis

Fri 9/19

6:00 am-11:59 pm

2 stops19h 59m

$425

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 9/18

7:03 am-11:59 pm

2 stops14h 56m

Lambert-St Louis

Fri 9/19

6:30 pm-8:23 pm

1 stop27h 53m

$430

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 9/18

1:00 pm-11:59 pm

1 stop8h 59m

Lambert-St Louis

Sun 9/21

7:16 am-3:48 pm

2 stops10h 32m

$644

Santa RosaSt. Louis

STS - STL

STSSTL

Santa Rosa Sonoma County

Thu 9/18

1:00 pm-11:48 pm

2 stops8h 48m

Lambert-St Louis

Sun 9/21

7:16 am-3:48 pm

2 stops10h 32m

$649

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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 Tuesday when prices can be found for as low as $420. 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 Sunday because tickets tend to average around $467. 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 $403 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 $452 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

Best Price Found

$212

Fastest flight time

7h 31m

Direct flights

None

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Santa Rosa in the past 72 hours is $212. The best round-trip flight deal from Santa Rosa to St. Louis found on momondo in the last 72 hours is $318.
The fastest flight from Santa Rosa to St. Louis takes 7h 31m
There are no direct flights from Santa Rosa to St. Louis. Popular non-direct route for this connection is Santa Rosa Sonoma County Airport - Lambert-St Louis Airport.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
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 7h 31m.

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

  • 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.

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

Best airlines flying from Santa Rosa to St. Louis

Compare and see reviews for airlines that fly from Santa Rosa to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $346Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $432Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

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
Florissant
Fenton
Collinsville
O'Fallon
Alton
St. Peters
Farmington
Wentzville
Festus
Glencoe
Eureka
Edwardsville
Clayton
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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