STL - STS

$159 Find Cheap Flights from St. Louis to Santa Rosa

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Santa Rosa departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Santa Rosa

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Santa Rosa, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Santa Rosa, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
Flights Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Santa Rosa that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Wed, Oct 29 - Mon, Nov 3
Alaska Airlines Logo
7:00 am - 1:37 pmSTL-STS
8h 37m1 stop
Alaska Airlines Logo
6:25 pm - 3:05 pmSTS-STL
18h 40m2 stops
$339Alaska Airlines
Find Deal
Wed, Oct 29 - Mon, Nov 3
Alaska Airlines Logo
7:00 am - 1:37 pmSTL-STS
8h 37m1 stop
Alaska Airlines Logo
2:29 pm - 11:58 pmSTS-STL
7h 29m1 stop
$383Alaska Airlines
Find Deal
Wed, Oct 29 - Mon, Nov 3
Alaska Airlines Logo
7:00 am - 4:49 pmSTL-STS
11h 49m2 stops
Alaska Airlines Logo
6:25 pm - 3:05 pmSTS-STL
18h 40m2 stops
$392Alaska Airlines
Find Deal
Tue, Sep 16 - Sat, Sep 20
Alaska Airlines Logo
6:00 am - 1:36 pmSTL-STS
9h 36m1 stop
Alaska Airlines Logo
7:00 am - 5:34 pmSTS-STL
8h 34m1 stop
$403Alaska Airlines
Find Deal
Mon, Sep 1 - Mon, Sep 8
Alaska Airlines Logo
6:30 pm - 8:48 amSTL-STS
16h 18m2 stops
Alaska Airlines Logo
5:55 pm - 2:41 pmSTS-STL
18h 46m2 stops
$421Alaska Airlines
Find Deal
Mon, Sep 1 - Mon, Sep 8
Alaska Airlines Logo
6:00 am - 1:36 pmSTL-STS
9h 36m1 stop
Alaska Airlines Logo
5:55 pm - 2:41 pmSTS-STL
18h 46m2 stops
$423Alaska Airlines
Find Deal
Tue, Sep 16 - Sat, Sep 20
Alaska Airlines Logo
3:35 pm - 9:43 amSTL-STS
20h 08m2 stops
Alaska Airlines Logo
7:00 am - 5:34 pmSTS-STL
8h 34m1 stop
$424Alaska Airlines
Find Deal
Sun, Aug 31 - Sun, Sep 7
Alaska Airlines Logo
6:30 pm - 1:36 pmSTL-STS
21h 06m1 stop
Alaska Airlines Logo
7:52 pm - 5:34 pmSTS-STL
19h 42m2 stops
$425Alaska Airlines
Find Deal
Mon, Sep 1 - Mon, Sep 8
Alaska Airlines Logo
6:30 pm - 8:23 pmSTL-STS
27h 53m1 stop
Alaska Airlines Logo
7:00 am - 5:34 pmSTS-STL
8h 34m1 stop
$442Alaska Airlines
Find Deal
Tue, Sep 16 - Sat, Sep 20
Alaska Airlines Logo
3:35 pm - 9:43 amSTL-STS
20h 08m2 stops
Alaska Airlines Logo
5:55 pm - 5:34 pmSTS-STL
21h 39m2 stops
$456Alaska Airlines
Find Deal
Useful Info

KAYAK's insights & trends for St. Louis to Santa Rosa flights

Get data-powered insights and trends into flights from St. Louis to Santa Rosa to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from St. Louis to Santa Rosa?

The average price of all round-trip flights from St. Louis to Santa Rosa clicked on KAYAK for each day over the last 12 months.

When flying from St. Louis to Santa Rosa, you should consider leaving on a Monday and avoid Saturdays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Fridays and the most expensive ones on Wednesdays.

Good to know

Low seasonDecember
High seasonMay
Cheapest flight$159
Best time to beat the crowds with an average 45% drop in price.
Most popular time to fly and prices are also 1% lower on average.
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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Santa Rosa

  • What is the cheapest flight from St. Louis to Santa Rosa?

    In the last 3 days, the lowest price for a flight from St. Louis to Santa Rosa was $159 for a one-way ticket and $339 for a round-trip.

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

    No

  • Which aircraft models fly most regularly from St. Louis to Santa Rosa?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Santa Rosa?

    oneworld is the only airline alliance operating flights between St. Louis and Santa Rosa.

  • How does KAYAK find such low prices on flights from St. Louis to Santa Rosa?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Santa Rosa.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Santa Rosa?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Santa Rosa from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Santa Rosa?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Santa Rosa with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and STS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Santa Rosa?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Santa Rosa from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from St. Louis to Santa Rosa

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Santa Rosa. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Santa Rosa? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
American AirlinesOverall score based on 10000 reviews
6.9Entertainment
8.0Crew
7.2Comfort
6.5Food
7.5Boarding
Airline reviews

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

10.0 ExcellentBrendan, Jul 2025ORD - SNA
Read more American Airlines reviews

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

Boarding gate in Honolulu was staffed with a great clerk with a soothing voice despite the flight delay of over an hour. Flight attendants in the plane were all grumpy, not pleasant looking bunch. Their sour attitude showed throughout the flight. Inly able to get a select few movies started. Most of the movie links in the “free entertainment” did not work.

This was a horrible experience. For a first class experience, my chair was held together by 3M tape - and I have a photo. The crew weren’t very attentive, somewhat dismissive and forgot my drink and snack, the chair reclined about 3 inches on a 6-hour cross country flight. I was also not informed that there was no lounge available in Newark airport because of renovations, so all around this was one of the worst experiences and I would actively avoid both American and Alaska Air going forward.

Boarding was very efficient. Everyone got on board and we got on our way very quickly. It was frustrating that the entertainment app was not functioning properly. I was not able to activate some of the movies offered. The crew on this flight appears to be pretty grumpy. They had no smile on their faces. I felt like they were doing us a favor for being there.

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

Long 5 hour and 45 min flight and only one drink service and cookie snack

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

Flight boarded from Gate 39 at OGG, the farthest gate in the terminal. There were no Hawaiian themed amenities for the flight. The first class service was mediocre at best; I received not special welcome or recognition as an executive platinum member of American Advantage program. The flight attendants were more concerned with their cell phones than saying "thank you" to the passengers as we disembarked. Fortunately, the flight arrived at LAX a few minutes early.

Two flight changes before the scheduled flight. On the day of the flight, the flight was delayed, which caused the connecting flight to be missed. Then, I was directed to another airport (CUN) and traveled to Tulum. American gave a $12 voucher for lunch. The least expensive item on the menu at a Mexican restaurant was $9.99. Driving to Tulum was a bad auto crash, and traffic was delayed two-plus hours. The bottom line is that we should have been at the hotel at noon, but it ended up at 11:30 PM.

Everything you need to know for your flight from St. Louis to Santa Rosa

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.