$172+ Cheap flights from Santa Rosa to St. Louis (STS - STL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
STS — STL
Mar 15 — Mar 221
1 adult, Economy
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Find cheap flights from Santa Rosa to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Santa Rosa to St. Louis
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Cheapest flights from Santa Rosa to St. LouisExplore the most affordable flight options available from Santa Rosa to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.
Explore the most affordable flight options available from Santa Rosa to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.
This Expedia deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/127:15 am
STS
- STL
2 stops14h 44m
Alaska Airlines
Tue 3/317:00 am
STL
- STS
1 stop13h 01m
Alaska Airlines
Deal found 2/10![Alaska Airlines logo]()
$358
This Expedia deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/106:53 pm
STS
- STL
1 stop27h 06m
Alaska Airlines
Tue 4/147:00 am
STL
- STS
1 stop13h 01m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$383
This Southwest deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:00 am
STS
- STL
2 stops9h 55m
Southwest
Sat 4/254:00 pm
STL
- STS
1 stop6h 30m
Southwest
Deal found 2/9![Southwest logo]()
$394
This Alaska Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:00 am
STS
- STL
1 stop7h 13m
Alaska Airlines
Sat 7/116:20 pm
STL
- STS
1 stop7h 02m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$437
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:00 am
STS
- STL
1 stop7h 13m
Alaska Airlines
Mon 8/106:20 pm
STL
- STS
1 stop7h 02m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$458
This American Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/912:56 pm
STS
- STL
1 stop9h 03m
American Airlines
Wed 3/117:58 am
STL
- STS
1 stop9h 55m
American Airlines
Deal found 2/11![American Airlines logo]()
$468
This Expedia deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:53 pm
STS
- STL
1 stop27h 06m
Alaska Airlines
Sat 4/254:46 pm
STL
- STS
1 stop8h 11m
Alaska Airlines
Deal found 2/9![Alaska Airlines logo]()
$475
Best flights from Santa Rosa to St. LouisDiscover carefully curated flight deals from Santa Rosa to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.
Discover carefully curated flight deals from Santa Rosa to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 13, 2026.
This Expedia deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/127:15 am
STS
- STL
2 stops14h 44m
Alaska Airlines
Tue 3/317:00 am
STL
- STS
1 stop13h 01m
Alaska Airlines
Deal found 2/10![Alaska Airlines logo]()
$358
This Southwest deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:00 am
STS
- STL
2 stops9h 55m
Southwest
Sat 4/254:00 pm
STL
- STS
1 stop6h 30m
Southwest
Deal found 2/9![Southwest logo]()
$394
This Alaska Airlines deal was found by Cheapflights users on 2/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:00 am
STS
- STL
1 stop7h 13m
Alaska Airlines
Sat 7/116:20 pm
STL
- STS
1 stop7h 02m
Alaska Airlines
Deal found 2/12![Alaska Airlines logo]()
$437
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:00 am
STS
- STL
1 stop7h 13m
Alaska Airlines
Mon 8/106:20 pm
STL
- STS
1 stop7h 02m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$458
This Expedia deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/216:53 pm
STS
- STL
1 stop27h 06m
Alaska Airlines
Sat 4/254:46 pm
STL
- STS
1 stop8h 11m
Alaska Airlines
Deal found 2/9![Alaska Airlines logo]()
$475
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/511:02 am
STS
- STL
1 stop10h 56m
Alaska Airlines
Sun 8/97:30 pm
STL
- STS
1 stop16h 40m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$475
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:00 am
STS
- STL
1 stop7h 13m
Alaska Airlines
Fri 7/106:20 pm
STL
- STS
1 stop7h 02m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$479
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:00 am
STS
- STL
1 stop7h 13m
Alaska Airlines
Tue 8/116:20 pm
STL
- STS
2 stops17h 50m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$492
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/47:34 pm
STS
- STL
1 stop26h 24m
Alaska Airlines
Mon 8/107:30 pm
STL
- STS
1 stop16h 40m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$495
Last-minute flights from Santa Rosa to St. LouisDiscover last-minute flight deals from Santa Rosa to St. Louis. Data last updated February 13, 2026 and is based on user searches.
Discover last-minute flight deals from Santa Rosa to St. Louis. Data last updated February 13, 2026 and is based on user searches.
This Alaska Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2410:51 am
STS
- STL
2 stops25h 00m
Alaska Airlines
Sat 2/282:47 pm
STL
- STS
1 stop9h 05m
Alaska Airlines
Deal found 2/9![Alaska Airlines logo]()
$645
This Alaska Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/257:57 pm
STS
- STL
1 stop26h 02m
Alaska Airlines
Sat 2/282:47 pm
STL
- STS
1 stop21h 45m
Alaska Airlines
Deal found 2/8![Alaska Airlines logo]()
$648
This American Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/912:56 pm
STS
- STL
1 stop9h 03m
American Airlines
Wed 3/117:58 am
STL
- STS
1 stop9h 55m
American Airlines
Deal found 2/11![American Airlines logo]()
$468
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/97:57 pm
STS
- STL
1 stop15h 54m
Alaska Airlines
Wed 3/116:38 am
STL
- STS
2 stops17h 14m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$486
This Expedia deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/127:15 am
STS
- STL
2 stops14h 44m
Alaska Airlines
Tue 3/317:00 am
STL
- STS
1 stop13h 01m
Alaska Airlines
Deal found 2/10![Alaska Airlines logo]()
$358
One-way flights from Santa Rosa to St. LouisSearch for one-way flight options from Santa Rosa to St. Louis. Find affordable one-way fares based on user searches. Data last updated February 13, 2026.
Search for one-way flight options from Santa Rosa to St. Louis. Find affordable one-way fares based on user searches. Data last updated February 13, 2026.
This Alaska Airlines deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/251:13 pm
STS
- STL
1 stop8h 46m
Alaska Airlines
Deal found 2/10![Alaska Airlines logo]()
$172
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/67:05 am
STS
- STL
2 stops29h 46m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$213
This American Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/64:23 pm
STS
- STL
1 stop5h 36m
American Airlines
Deal found 2/11![American Airlines logo]()
$240
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/136:50 pm
STS
- STL
2 stops17h 01m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$278
This American Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/134:23 pm
STS
- STL
1 stop5h 36m
American Airlines
Deal found 2/11![American Airlines logo]()
$285
This Alaska Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/147:57 pm
STS
- STL
1 stop26h 02m
Alaska Airlines
Deal found 2/11![Alaska Airlines logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/67:53 pm
STS
- STL
3 stops41h 21m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$444
This Kiwi.com deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/256:51 pm
STS
- STL
3 stops42h 24m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$470
Find flight deals from Santa Rosa to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Santa Rosa (STS) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $358 (Expedia) |
One-way from | $172 (Alaska Airlines) |
Popular in | December |
Cheapest in | September |
Average price | $513 |
Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated February 13, 2026.
Use the filters below to find and compare flights from Santa Rosa to St. Louis that are best for you.
Fly from
Santa Rosa
Fly to
St. Louis
Route
Depart
Return
Price
Santa RosaSt. Louis
STS - STL
STSSTL
Santa Rosa Sonoma County
Thu 3/12
7:15 am-11:59 pm
2 stops14h 44m
Lambert-St Louis
Tue 3/31
7:00 am-6:01 pm
1 stop13h 01m
$358
Santa RosaSt. Louis
STS - STL
STSSTL
Santa Rosa Sonoma County
Tue 4/21
6:00 am-5:55 pm
2 stops9h 55m
Lambert-St Louis
Sat 4/25
4:00 pm-8:30 pm
1 stop6h 30m
$394
Santa RosaSt. Louis
STS - STL
STSSTL
Santa Rosa Sonoma County
Tue 7/7
8:00 am-5:13 pm
1 stop7h 13m
Lambert-St Louis
Sat 7/11
6:20 pm-11:22 pm
1 stop7h 02m
$437
Santa RosaSt. Louis
STS - STL
STSSTL
Santa Rosa Sonoma County
Wed 8/5
8:00 am-5:13 pm
1 stop7h 13m
Lambert-St Louis
Mon 8/10
6:20 pm-11:22 pm
1 stop7h 02m
$458
Santa RosaSt. Louis
STS - STL
STSSTL
Santa Rosa Sonoma County
Tue 4/21
6:53 pm-11:59 pm
1 stop27h 06m
Lambert-St Louis
Sat 4/25
4:46 pm-10:57 pm
1 stop8h 11m
$475
Santa RosaSt. Louis
STS - STL
STSSTL
Santa Rosa Sonoma County
Wed 8/5
11:02 am-11:58 pm
1 stop10h 56m
Lambert-St Louis
Sun 8/9
7:30 pm-10:10 am
1 stop16h 40m
$475
Santa RosaSt. Louis
STS - STL
STSSTL
Santa Rosa Sonoma County
Tue 7/7
8:00 am-5:13 pm
1 stop7h 13m
Lambert-St Louis
Fri 7/10
6:20 pm-11:22 pm
1 stop7h 02m
$479
Santa RosaSt. Louis
STS - STL
STSSTL
Santa Rosa Sonoma County
Wed 8/5
8:00 am-5:13 pm
1 stop7h 13m
Lambert-St Louis
Tue 8/11
6:20 pm-10:10 am
2 stops17h 50m
$492
Santa RosaSt. Louis
STS - STL
STSSTL
Santa Rosa Sonoma County
Tue 8/4
7:34 pm-11:58 pm
1 stop26h 24m
Lambert-St Louis
Mon 8/10
7:30 pm-10:10 am
1 stop16h 40m
$495
Santa RosaSt. Louis
STS - STL
STSSTL
Santa Rosa Sonoma County
Sat 4/25
7:23 am-11:59 pm
2 stops14h 36m
$192
Showing 1-10 of 15 results
Compare providers for flights from Santa Rosa to St. Louis
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Santa Rosa to St. Louis in February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Santa Rosa-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Santa Rosa-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Santa Rosa-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Santa Rosa-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Santa Rosa-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Santa Rosa to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Santa Rosa with our price prediction graph.
STS-STL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Santa Rosa to St. Louis
Related info for your journey
Find useful and relevant information for your journey from Santa Rosa to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus
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