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STL - STS

$212 Find Cheap Flights from St. Louis to Santa Rosa - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$423
Typical prices: $466-$574
Alaska Airlines
Sat 10/27Wed 10/31
STL - STS • 1 stop
Cheapest one-way
$212
Typical prices: $306-$401
Alaska Airlines
Mon 11/19
STL - STS • 1 stop
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Santa Rosa. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
September
Cheapest • 25% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Portland (PDX)
Cheapest • Avg $447 (round-trip)
Phoenix Sky Harbor Intl (PHX)
Shortest trip • 6h 40m (one-way)
Insights
Insights
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Santa Rosa (STL-STS)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Santa Rosa

Tue, Oct 27 - Sat, Oct 31
Alaska Airlines Logo
7:02 am - 1:06 pmSTL  Lambert-St Louis-STS Santa Rosa Sonoma County
8h 04m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
7:00 am - 3:44 pmSTS  Santa Rosa Sonoma County-STL Lambert-St Louis
6h 44m1 stop Seattle/Tacoma Intl
$423Alaska Airlines
Tue, Oct 27 - Tue, Nov 3
Delta Logo
6:47 am - 4:05 pmSTL  Lambert-St Louis-STS Santa Rosa Sonoma County
11h 18m2 stops Detroit Metropolitan Wayne County Salt Lake City
Delta Logo
11:21 am - 9:09 pmSTS  Santa Rosa Sonoma County-STL Lambert-St Louis
7h 48m1 stop Salt Lake City
$428Delta
Tue, Oct 27 - Sat, Oct 31
Delta Logo
9:47 am - 4:05 pmSTL  Lambert-St Louis-STS Santa Rosa Sonoma County
8h 18m2 stops Minneapolis St Paul Salt Lake City
Delta Logo
11:21 am - 9:25 pmSTS  Santa Rosa Sonoma County-STL Lambert-St Louis
8h 04m2 stops Salt Lake City Minneapolis St Paul
$433Delta
Fri, Oct 30 - Sat, Oct 31
Alaska Airlines Logo
7:02 am - 1:06 pmSTL  Lambert-St Louis-STS Santa Rosa Sonoma County
8h 04m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
7:00 am - 3:44 pmSTS  Santa Rosa Sonoma County-STL Lambert-St Louis
6h 44m1 stop Seattle/Tacoma Intl
$442Alaska Airlines
Tue, Oct 27 - Fri, Oct 30
Delta Logo
9:47 am - 4:05 pmSTL  Lambert-St Louis-STS Santa Rosa Sonoma County
8h 18m2 stops Minneapolis St Paul Salt Lake City
Delta Logo
4:49 pm - 12:44 amSTS  Santa Rosa Sonoma County-STL Lambert-St Louis
5h 55m1 stop Salt Lake City
$447Delta
Tue, Oct 27 - Fri, Oct 30
Delta Logo
6:47 am - 4:05 pmSTL  Lambert-St Louis-STS Santa Rosa Sonoma County
11h 18m2 stops Detroit Metropolitan Wayne County Salt Lake City
Delta Logo
11:21 am - 11:21 pmSTS  Santa Rosa Sonoma County-STL Lambert-St Louis
10h 00m2 stops Salt Lake City Minneapolis St Paul
$452Delta
Mon, Oct 26 - Sat, Oct 31
Alaska Airlines Logo
7:02 am - 1:06 pmSTL  Lambert-St Louis-STS Santa Rosa Sonoma County
8h 04m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
7:00 am - 3:44 pmSTS  Santa Rosa Sonoma County-STL Lambert-St Louis
6h 44m1 stop Seattle/Tacoma Intl
$483Alaska Airlines
Tue, Oct 27 - Fri, Oct 30
Alaska Airlines Logo
7:02 am - 1:06 pmSTL  Lambert-St Louis-STS Santa Rosa Sonoma County
8h 04m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
7:00 am - 3:44 pmSTS  Santa Rosa Sonoma County-STL Lambert-St Louis
6h 44m1 stop Seattle/Tacoma Intl
$486Alaska Airlines
Tue, Oct 27 - Mon, Nov 2
Delta Logo
9:47 am - 4:05 pmSTL  Lambert-St Louis-STS Santa Rosa Sonoma County
8h 18m2 stops Minneapolis St Paul Salt Lake City
Delta Logo
11:21 am - 9:09 pmSTS  Santa Rosa Sonoma County-STL Lambert-St Louis
7h 48m1 stop Salt Lake City
$491Delta
Tue, Oct 27 - Mon, Nov 2
Alaska Airlines Logo
7:02 am - 1:06 pmSTL  Lambert-St Louis-STS Santa Rosa Sonoma County
8h 04m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
7:07 am - 11:59 pmSTS  Santa Rosa Sonoma County-STL Lambert-St Louis
14h 52m2 stops Los Angeles Seattle/Tacoma Intl
$494Alaska Airlines
Booking Insights

Price, demand and travel trends for St. Louis to Santa Rosa flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from St. Louis to Santa Rosa?

Round-trip flights from St. Louis to Santa Rosa typically range from $466 to $574. The lowest price found in the past 5 days was $423, on Alaska Airlines.

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Key details for St. Louis to Santa Rosa flights

Low season

December

Cheapest flight

$212
One-way flight from St. Louis to Santa Rosa

When to book flights from St. Louis to Santa Rosa

Are your dates flexible? Find out the best times to travel from St. Louis to Santa Rosa based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your St. Louis to Santa Rosa flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from St. Louis to Santa Rosa?

    Two cabin classes are available on flights from St. Louis to Santa Rosa:

    • Economy Class
    • First Class

  • How long is a flight from St. Louis to Santa Rosa?

    A nonstop flight from St. Louis to Santa Rosa takes 00m, covering 1,741 miles.

  • Do I need a passport to fly from St. Louis to Santa Rosa?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a St. Louis to Santa Rosa flight?

    Round-trip flights from St. Louis to Santa Rosa range from $466 to $574, with an average of $530 over the past 12 months. Anything below $466 counts as a good deal.

  • Have flight prices from St. Louis to Santa Rosa changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $423 to $1,830. That means the highest observed fare was about 4x higher than the lowest one.

  • How are flight prices from St. Louis to Santa Rosa looking right now?

    One-way fares from St. Louis to Santa Rosa are currently lower than usual. Average one-way flight prices are about $310, which is 14% below the typical average for this route.

  • What car rental options are available at Santa Rosa Sonoma County Airport (STS)?

    Santa Rosa Sonoma County Airport (STS) hosts 5 major car rental companies, with daily rates starting from around $24 for economy cars. Top options include:

    • Ace
    • Dollar
    • Enterprise Rent-A-Car
    • Hertz
    • Budget

  • Which airports can I use when flying from St. Louis to Santa Rosa?

    Flights from St. Louis to Santa Rosa usually depart from Lambert-St Louis (STL) and arrive at Santa Rosa Sonoma County (STS).

  • Which airports do connecting flights from St. Louis to Santa Rosa pass through?

    One-stop flights from St. Louis to Santa Rosa most commonly connect through:

    • Phoenix Sky Harbor Intl (PHX) - 35% of one-stop connections
    • Las Vegas Harry Reid Intl (LAS) - 24% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 18% of one-stop connections
    • Dallas/Fort Worth (DFW) - 12% of one-stop connections

  • Can I save money by using flexible dates for flights from St. Louis to Santa Rosa?

    Yes. Flexible dates can save you up to 33% on flights from St. Louis to Santa Rosa. Wednesday is the cheapest departure day at $396 round-trip on average, while Monday is the most expensive at $588, a difference of $192.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from St. Louis to Santa Rosa?

    Flying via Phoenix Sky Harbor Intl (PHX) gives the shortest average 1-stop total travel time at 6h 40m, compared with 6h 57m via Dallas/Fort Worth (DFW) and 7h 48m via Las Vegas Harry Reid Intl (LAS).

  • What is the time difference between St. Louis and Santa Rosa?

    Santa Rosa is 2 hours behind St. Louis (Pacific Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking St. Louis to Santa Rosa flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Monday. On this route, Wednesday flights average $396, about $192 less than Monday fares (33% savings) based on the last 12 months.
  • If you can choose when to travel, plan your St. Louis to Santa Rosa trip for September. Fares historically average $396 round-trip in that month - typically $192 less than the most expensive month, which is March (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Santa Rosa Sonoma County Airport.

    • Hilton Garden Inn Sonoma County Airport

More options for your flight from St. Louis to Santa Rosa

Complete your trip to Santa Rosa with a hotel stay or car rental

Car rentals in Santa Rosa
Hotels in Santa Rosa
Vacations in Santa Rosa