STL - SJC

$137 Find Cheap Flights from St. Louis to San Jose - Compare and Save

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 San Jose departing on 9/13. 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, 0 bags

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Everything you should know

Cheapest round-trip
$246
Typical prices: $462-$573
Frontier
Sat 9/12Fri 9/18
STL - SJC • 1 stop
Cheapest one-way
$137
Typical prices: $204-$274
Frontier
Sun 9/13
STL - SJC • 1 stop
Top airlines
Cheapest • from $246 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between St. Louis and San Jose. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $302 (round-trip)
Shortest trip • 6h 03m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 27% price drop
Most popular
Good to know
Good to know
+1
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Good to know
+1
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We hope you love your trip to San Jose!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from St. Louis to San Jose (STL-SJC)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to San Jose 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 San Jose

Sat, Sep 12 - Fri, Sep 18
Frontier Logo
12:17 pm - 12:43 pmSTL  Lambert-St Louis-SJC San Jose
26h 26m1 stop Las Vegas Harry Reid Intl
Frontier Logo
1:38 pm - 11:32 amSJC  San Jose-STL Lambert-St Louis
19h 54m1 stop Las Vegas Harry Reid Intl
$246Frontier
Wed, Sep 30 - Mon, Oct 5
Frontier Logo
12:17 pm - 12:43 pmSTL  Lambert-St Louis-SJC San Jose
26h 26m1 stop Las Vegas Harry Reid Intl
Frontier Logo
1:38 pm - 11:32 amSJC  San Jose-STL Lambert-St Louis
19h 54m1 stop Las Vegas Harry Reid Intl
$255Frontier
Sat, Oct 24 - Sat, Oct 31
American Airlines Logo
5:40 am - 11:04 amSTL  Lambert-St Louis-SJC San Jose
7h 24m1 stop Dallas/Fort Worth
American Airlines Logo
6:00 am - 2:30 pmSJC  San Jose-STL Lambert-St Louis
6h 30m1 stop Dallas/Fort Worth
$347American Airlines
Wed, Sep 9 - Sat, Sep 12
American Airlines Logo
2:30 pm - 6:29 pmSTL  Lambert-St Louis-SJC San Jose
5h 59m1 stop Phoenix Sky Harbor Intl
American Airlines Logo
2:36 pm - 11:43 pmSJC  San Jose-STL Lambert-St Louis
7h 07m1 stop Dallas/Fort Worth
$347American Airlines
Sat, Sep 5 - Wed, Sep 9
Delta Logo
11:13 am - 5:34 pmSTL  Lambert-St Louis-SJC San Jose
8h 21m1 stop Minneapolis St Paul
Delta Logo
6:10 am - 3:12 pmSJC  San Jose-STL Lambert-St Louis
7h 02m1 stop Minneapolis St Paul
$347Delta
Tue, Oct 20 - Wed, Nov 4
Delta Logo
3:35 pm - 8:54 pmSTL  Lambert-St Louis-SJC San Jose
7h 19m1 stop Minneapolis St Paul
Delta Logo
6:00 am - 1:32 pmSJC  San Jose-STL Lambert-St Louis
5h 32m1 stop Salt Lake City
$347Delta
Mon, Oct 12 - Wed, Oct 14
Southwest Logo
5:05 am - 9:40 amSTL  Lambert-St Louis-SJC San Jose
6h 35m1 stop Phoenix Sky Harbor Intl
Southwest Logo
1:15 pm - 11:55 pmSJC  San Jose-STL Lambert-St Louis
8h 40m1 stop Las Vegas Harry Reid Intl
$374Southwest
Mon, Oct 12 - Wed, Oct 14
Southwest Logo
5:05 am - 9:40 amSTL  Lambert-St Louis-SJC San Jose
6h 35m1 stop Phoenix Sky Harbor Intl
Southwest Logo
2:40 pm - 11:55 pmSJC  San Jose-STL Lambert-St Louis
7h 15m1 stop Las Vegas Harry Reid Intl
$374Southwest
Wed, Nov 18 - Tue, Nov 24
United Airlines Logo
8:50 am - 3:08 pmSTL  Lambert-St Louis-SJC San Jose
8h 18m1 stop Denver Intl
United Airlines Logo
6:30 am - 3:43 pmSJC  San Jose-STL Lambert-St Louis
7h 13m1 stop Chicago O'Hare Intl
$447United Airlines
Thu, Nov 19 - Tue, Nov 24
United Airlines Logo
8:50 am - 3:08 pmSTL  Lambert-St Louis-SJC San Jose
8h 18m1 stop Denver Intl
United Airlines Logo
6:30 am - 3:43 pmSJC  San Jose-STL Lambert-St Louis
7h 13m1 stop Chicago O'Hare Intl
$474United Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to San Jose flights

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

How much is a round-trip flight from St. Louis to San Jose, California?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to San Jose, California departing in September.

Flight prices are below average for this route right now.

Flights to San Jose, California from St. Louis usually cost between $453 and $553 in September.
The lowest price found in the past 5 days was $246 on Frontier (Sep 12-Sep 18).

What is the cheapest month to fly from St. Louis to San Jose?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to San Jose, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to San Jose is January, where tickets cost $369 (return) on average. On the other hand, the most expensive months are February and June, where the average cost of round-trip tickets is $793 and $610 respectively.

Expert advice

Expert advice for your flight from St. Louis to San Jose

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Bill Fink

Bill Fink

Expert on SJC

Bill is an award-winning travel writer with extensive credits covering airlines and the aviation industry for publications including AARP, AFAR, The Points Guy and Yahoo. Based in Portland, Oregon, Bill has traveled to more than 75 countries - and been late for his flight in most of them. He once achieved top-level frequent flier status for all of American, Delta and United Airlines during a single year.

Good to know

Low season

April

Cheapest flight

$137
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly with an average 9% increase in price.
Flight from St. Louis to San Jose

When to book flights from St. Louis to San Jose

Are your dates flexible? Find out the best times to travel from St. Louis to San Jose 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 San Jose

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

    In the last 5 days, the lowest price for a flight from St. Louis to San Jose was $137 for a one-way ticket and $246 for a round-trip.

  • Do I need a passport to fly between St. Louis and San Jose?

    No

  • Which aircraft models fly most regularly from St. Louis to San Jose?

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

  • Which airline alliances offer flights from St. Louis to San Jose?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between St. Louis and San Jose, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to San Jose, Southwest or Delta?

    The two airlines most popular with KAYAK users for flights from St. Louis to San Jose are Southwest and Delta. With an average price for the route of $490 and an overall rating of 8.0, Southwest is the most popular choice. Delta is also a great choice for the route, with an average price of $462 and an overall rating of 7.8.

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

    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 San Jose.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Jose 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 San Jose?

    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 San Jose with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and SJC 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 San Jose?

    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 San Jose 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 4 airlines serving from St. Louis to San Jose

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to San Jose. 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 San Jose? 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.
8.0
SouthwestOverall score based on 4218 reviews
7.5Entertainment
8.1Boarding
8.0Comfort
7.0Food
8.6Crew
Airline reviews

Exceptional. The gate crew responded quickly and got me onto this earlier flight as the final passenger, saving me more than four hours of wait time for my reserved flight.

10.0 ExcellentAnonymous, Aug 2026
Read more Southwest reviews

Exceptional. The gate crew responded quickly and got me onto this earlier flight as the final passenger, saving me more than four hours of wait time for my reserved flight.

Poor customer service, no accommodation for passengers when the flight was delayed over 5 hours.

The Air hostess were very rude on my flight from Houston to Austin . Their regular communication itself felt a they are shouting at people.

The charges were ridiculous for an hour flight and the turbulence was very scary.

The plane arrived 25 minutes late, and the Wi-Fi was slower than it usually is.

Crew was excellent - Plane was fine. Media was good, could use more kid shows; Not a fan of the brownie brittle -- snack could be slightly better.

Flight was on time and the crew was very nice.

Flight was delayed for 1 hour. Otherwise it was a fairly normal Southwest experience

Main flight attendant made light of the delay and presented some humor to lighten the tempestuous situation. Delayed flight took off 2 hours after scheduled time.

More assistance and clarity for travelers with gate checking and lap children

We never made it on this flight because we missed our connection due to o delayed flight from Jackson.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

The cabin temperature was nice and cool. The wifi was not working.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Crew was not friendly when I went to request a seat change.

The plane smelled like a sewer. Multiple passengers complained. It’s a safety and quality issue to clean these planes.

Comfort+ on delta was excellent room for a 6’4” male. No one issues. Staff was great. Flight was bumpy but the pilot did everything he could to make it comfortable. Internet went out half way through the flight. I am glad I didn’t pay for it. But that was a huge issue for users.

The SFO lounge closes at 12 midnight. My flight took off at 2AM

Delayed 2 hours while stuck on the aircraft. If the luggage was properly loaded the first time we probably wouldn’t have been delayed at all

Flight be on time would be a good start. Then train your flight attendants to be attentive and friendly. This time they completely forgot my row for the measly snack! United, do better!

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

Crew was very cooperative and professional. Passenger's first checked in bag should be free.

Onboarding - it would be great to see on the screen what group they were boarding. It was very confusing on who was boarding (even though they called it out) they were not clear and the space to board was strange.

Older plane. Food was really bad, almost not worth the effort. Huge difference with European based airlines.

Mechanical delay > Crew Time out. No communication to passengers. Crew time out was positioned as a surprise (even though it must have been know at the time of boarding that the crew would time out.

My luggage was not sent with us. Not sure if this is Envoy Air responsibility but that was a very BAD experience

American delayed the flight for a crew rest period. The delay occurred late in the evening - the earliest i can find is 10:20 pm. With a 6 am flight anyone on the flight would have already have been asleep (unless you are insane, a vampire or on drugs) and at least for me i was already on the way to the airport at 445 am the next morning when i discovered they delayed the flight until 9 am. Given the incoming flight was in the air at 6 pm the evening before this should have been figured out a lot more timely that was there only crew to use. Just frustrating given there is no consideration for customer experience anymore in flying.

Good crew and flight was on time. It’s a small plane with limited overhead luggage space. They said the overhead space was full and I had to check my bag. There was still space when I got on. Waiting for my checked luggage added 30 minutes to my trip. Not the end of the world but also not great.

Trip delayed for 2 hours because of rain. We boarded and have to get down the flight and reboard again.

No enough space plus only allowing one laggage instead of two like other airlines.

Qatar airways ,boarding arrangements at Hamid international airport could been better

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.

Miami lounges were overcrowded and we were unable to get in. We only had a short time. But the banks are too tight in all American hubs

Everything minus the seat, was okay. Not enough room. 15 hours in a small space was hard on my back. I'm still quite sore.

Everything you need to know for your flight from St. Louis to San Jose

Information on your arrival and departure airports