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$81+ Cheap flights from San Jose to St. Louis (SJC - 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — STL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from San Jose to Lambert-St Louis are usually found in September or August, booked 15 days in advance, depart on a Tuesday or Thursday and return on a Monday

Cheap flight deals from San Jose to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from San Jose (SJC) 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 September 11, 2025.

Round-trip from

$204
(Southwest)

One-way from

$81
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$345
From San Jose to Lambert-St Louis
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One-way flight from San Jose to Lambert-St Louis
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Highest demand for flights based on searches. 8% potential increase in price ($34 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from San Jose to St. Louis

Cheapest flights from San Jose to St. Louis
Explore the most affordable flight options available from San Jose to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Southwest deal was found by Cheapflights users on 9/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/188:40 amSJC - STL
1 stop7h 50mSouthwest
Wed 11/191:45 pmSTL - SJC
1 stop6h 15mSouthwest
Deal found 9/10$204
This Southwest deal was found by Cheapflights users on 9/9. 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.
Sat 10/257:05 amSJC - STL
1 stop8h 05mSouthwest
Tue 11/44:45 pmSTL - SJC
1 stop7h 40mSouthwest
Deal found 9/9$219
This Southwest deal was found by Cheapflights users on 9/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1812:10 pmSJC - STL
1 stop7h 25mSouthwest
Thu 11/205:35 amSTL - SJC
1 stop6h 15mSouthwest
Deal found 9/10$230
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1712:27 pmSJC - STL
1 stop18h 40mFrontier
Mon 10/2012:38 pmSTL - SJC
1 stop7h 10mFrontier
Deal found 9/9$251
This Southwest deal was found by Cheapflights users on 9/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/157:10 amSJC - STL
1 stop8h 15mSouthwest
Wed 12/175:00 amSTL - SJC
1 stop6h 00mSouthwest
Deal found 9/11$255
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/18:00 amSJC - STL
1 stop7h 34mAlaska Airlines
Tue 10/76:33 amSTL - SJC
1 stop10h 17mAlaska Airlines
Deal found 9/10$256
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/3010:30 pmSJC - STL
1 stop9h 29mDelta
Thu 10/27:40 amSTL - SJC
1 stop6h 43mDelta
Deal found 9/10$257

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Jose 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 September 11, 2025.
Use the filters below to find and compare flights from San Jose to St. Louis that are best for you.

Fly from

San Jose

Fly to

St. Louis

Route

Depart

Return

Price

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Mon 12/15

7:10 am-5:25 pm

1 stop8h 15m

Lambert-St Louis

Wed 12/17

5:00 am-9:00 am

1 stop6h 00m

$255

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Tue 2/24

1:00 pm-11:56 pm

1 stop8h 56m

Lambert-St Louis

Wed 2/25

2:55 pm-10:03 pm

1 stop9h 08m

$256

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Wed 10/1

6:20 am-2:44 pm

1 stop6h 24m

Lambert-St Louis

Wed 10/1

7:00 pm-11:41 pm

1 stop6h 41m

$257

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Sat 10/18

6:20 am-3:31 pm

1 stop7h 11m

Lambert-St Louis

Mon 10/20

7:30 pm-11:40 pm

1 stop6h 10m

$257

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Mon 11/24

4:45 pm-12:46 am

1 stop6h 01m

Lambert-St Louis

Tue 12/2

12:49 pm-8:39 pm

1 stop9h 50m

$259

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Wed 10/29

6:20 am-3:31 pm

1 stop7h 11m

Lambert-St Louis

Tue 11/4

10:45 am-10:08 pm

2 stops13h 23m

$273

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Tue 9/30

12:35 pm-10:00 pm

1 stop7h 25m

Lambert-St Louis

Tue 10/7

2:29 pm-10:08 pm

2 stops9h 39m

$273

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Sat 10/4

6:11 pm-8:37 am

2 stops12h 26m

Lambert-St Louis

Mon 10/6

5:15 pm-10:58 pm

1 stop7h 43m

$275

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Tue 9/30

1:30 pm-11:09 pm

1 stop7h 39m

Lambert-St Louis

Sun 10/5

6:00 am-12:10 pm

1 stop8h 10m

$289

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Tue 10/14

3:00 pm-12:10 am

1 stop7h 10m

$93

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/8

Showing 1-10 of 17 results
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Best time to book a flight from San Jose to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from San Jose with our price prediction graph.
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 San Jose to St. Louis

How far ahead should I book a flight from San Jose to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from San Jose to St. Louis. Price data was last updated on August 29, 2025.

To ensure you get the cheapest price possible for a flight from San Jose to St. Louis, you should look to book at least 15 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from San Jose to St. Louis?

Currently, August is the cheapest month in which you can book a flight from San Jose to St. Louis (average of $311). Flying from San Jose to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SJC to STL?

Find hourly flight availability from San Jose to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

It’s typically best to fly out from San Jose to St. Louis in the afternoon. Doing so could potentially save you 39% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated September 11, 2025.
Read through reviews of airlines operating flights from San Jose to St. Louis, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Crew

8.6

Boarding

8.1

Comfort

8.0

Overall

8.0

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from San Jose to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from San Jose to St. Louis?

    Lambert-St Louis is the airport most travelers will use when flying to St. Louis from San Jose. Booking flights from San Jose (SJC) to Lambert-St Louis (STL) should be relatively easy as there is 1 daily flight to St. Louis from 5 different airlines. 5h 38m is how long a flight from San Jose to Lambert-St Louis will take if you book a nonstop flight.

  • How long is the flight from San Jose to St. Louis?

    There are many flights that can get you from San Jose to St. Louis in 6h 24m. Fly via Southwest, Hawaiian Airlines, or Delta to get the fastest option. The distance from San Jose to St. Louis is about 1710 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from San Jose to St. Louis round-trip?

    Frontier, at $118, was found to be the cheapest airline from San Jose to St. Louis.Alternate airlines to your destination round-trip include Delta and American Airlines. Frontier is currently priced 69% below the average price you’ll pay for this route.

  • Can I find deals for flights from San Jose to St. Louis that include hotel bookings?

    Yes. In addition to deals on San Jose to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Jose to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Jose to St. Louis.

  • Can I find deals for business class flights from San Jose to St. Louis?

    Yes. Cheapflights offers flight deals from San Jose to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Jose to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from San Jose to St. Louis (average of $311). Flying from San Jose to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

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Top 5 airlines flying from San Jose to St. Louis

Discover the top 5 airlines that operate flights from San Jose to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$118Average$218FlexibilityNo cancel feeOn-time62%
DeltaCheapest$246Average$378FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$246Average$378FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$246Average$370FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$332Average$435FlexibilityNo cancel feeOn-time63%

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