$79 Find Cheap Flights from St. Louis to California

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 California departing on 5/16. 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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These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to California.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to California.
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Flight Deals

Cheap Flights from St. Louis to California

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Los Angeles
Los Angeles1 stop$279
San Francisco
San Francisco1 stop$327
San Diego
San Diego1 stop$250
San Jose
San Jose1 stop$361
Palm Springs
Palm Springs1 stop$326
Fresno
Fresno1 stop$372
San Luis Obispo
San Luis Obispo1 stop$355
Bakersfield
Bakersfield1 stop$457
Arcata
Arcata1 stop$364
Redding
Redding2 stops$464
Reno
Reno1 stop$171
Sacramento
Sacramento1 stop$191
Los Angeles
Los Angeles1 stop$279
San Francisco
San Francisco1 stop$327
San Diego
San Diego1 stop$250
San Jose
San Jose1 stop$361
Palm Springs
Palm Springs1 stop$326
Fresno
Fresno1 stop$372
San Luis Obispo
San Luis Obispo1 stop$355
Bakersfield
Bakersfield1 stop$457
Arcata
Arcata1 stop$364
Redding
Redding2 stops$464
Reno
Reno1 stop$171
Sacramento
Sacramento1 stop$191

Book Cheap St. Louis to California Plane Tickets

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

Thu, May 7 - Sat, May 9
Frontier Logo
8:08 pm - 10:05 am
STL
-
ONT
15h 57m
1 stop
Frontier Logo
6:00 am - 7:23 pm
ONT
-
STL
11h 23m
1 stop
$160Frontier
Thu, May 7 - Sat, May 9
Frontier Logo
8:08 pm - 10:05 am
STL
-
ONT
15h 57m
1 stop
Frontier Logo
6:00 am - 7:23 pm
ONT
-
STL
11h 23m
1 stop
$162Frontier
Sat, May 9 - Sat, May 16
Frontier Logo
8:08 pm - 11:49 pm
STL
-
ONT
5h 41m
1 stop
Frontier Logo
6:00 am - 7:23 pm
ONT
-
STL
11h 23m
1 stop
$167Frontier
Mon, May 4 - Fri, May 8
Multiple Airlines Logo
3:21 pm - 10:37 pm
STL
-
LAS
9h 16m
1 stop
Multiple Airlines Logo
8:59 pm - 7:23 pm
LAS
-
STL
20h 24m
1 stop
$189Multiple Airlines
Fri, May 15 - Fri, May 29
Multiple Airlines Logo
8:08 pm - 9:09 am
STL
-
SNA
15h 01m
1 stop
Multiple Airlines Logo
4:33 pm - 7:23 pm
SNA
-
STL
24h 50m
2 stops
$259Multiple Airlines
Wed, May 20 - Tue, May 26
Delta Logo
7:59 pm - 11:57 pm
STL
-
OAK
5h 58m
1 stop
Delta Logo
5:05 pm - 12:30 am
OAK
-
STL
5h 25m
1 stop
$357Delta
Wed, May 20 - Tue, May 26
Delta Logo
7:59 pm - 11:57 pm
STL
-
OAK
5h 58m
1 stop
Delta Logo
5:05 pm - 8:18 am
OAK
-
STL
13h 13m
2 stops
$362Delta
Fri, Sep 11 - Wed, Sep 16
Southwest Logo
6:25 am - 12:15 pm
STL
-
OAK
7h 50m
1 stop
Southwest Logo
11:55 am - 10:35 pm
OAK
-
STL
8h 40m
1 stop
$379Southwest
Fri, Sep 11 - Wed, Sep 16
Southwest Logo
5:45 am - 12:35 pm
STL
-
OAK
8h 50m
2 stops
Southwest Logo
11:55 am - 10:35 pm
OAK
-
STL
8h 40m
1 stop
$380Southwest
Wed, May 13 - Wed, May 20
Alaska Airlines Logo
5:33 pm - 10:59 pm
STL
-
SJC
7h 26m
1 stop
Alaska Airlines Logo
7:06 am - 11:54 pm
SJC
-
STL
14h 48m
2 stops
$380Alaska Airlines
Booking Insights

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

Get data-powered insights and trends into flights from St. Louis to California 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 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 California departing in May.

What is the cheapest St. Louis to California flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to California from St. Louis found in the last 72 hours was to Sacramento, at $248 round-trip. The most popular route is from St. Louis (STL) to Los Angeles (LAX), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $384.

What is the cheapest time of day to fly to California?

The average price for all round-trip flights from St. Louis to California depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to California is generally in the evening, when round-trip flights cost $321 on average. Morning departures are around 59% more expensive than evening flights, on average. The most expensive time of day to fly to California is generally in the morning, which is peak travel time and where the average cost of a ticket is $509.

Can I save money by flying with a layover from St. Louis to California?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $479, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to California, 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 California is September, when tickets cost $310 (return) on average. On the other hand, the most expensive months are March and June, when the average cost of round-trip tickets is $426 and $419 respectively.

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

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

Your flight ticket price will generally be cheaper if you fly to California on a Thursday and more expensive on a Tuesday. On your return trip to St. Louis, you should consider flying back on a Wednesday, and avoid Mondays for better deals.

How far in advance should I book a flight from St. Louis to California?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to California, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to California, you should book around 4 weeks before departure, which saves you about 13% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$79
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from St. Louis to Las Vegas

FAQs - booking California flights

  • Are there any lounges at St. Louis Lambert International Airport?

    If you’d like to unwind before departing on your flight to California, St. Louis Airport has multiple lounges. American Airlines Admirals Club is located between Concourses B and C, while Wingtips Lounge is located in Terminal 2. Both allow payment at the door. In addition, if you’re an active member of the military, free USO lounges are located in Terminal 1 near baggage claim area M6, and in Terminal 2 near exit 11.

  • What airport should I fly to if I want to visit southern California?

    If you’re looking to visit the southern region of California, consider flights from St. Louis Lambert International Airport (STL) to Los Angeles International Airport (LAX). American Airlines, Southwest and Alaska Airlines provide nonstop flights, while United Airlines provides layovers that stop at Denver International Airport (DEN) or Chicago O'Hare International Airport (ORD). Alternatively, you might consider flights to San Diego International Airport (SAN). Frontier Airlines, Spirit Airlines and United Airlines provide flights with one stop.

  • I’m flying from St. Louis to visit the Bay Area. What airport should I use?

    If you’re traveling to California to explore the Bay Area, consider flights from St. Louis Lambert International Airport (STL) to San Francisco International Airport (SFO). Frontier Airlines provides layovers that stop at Las Vegas (LAS), while American Airlines provides one-stop layovers that stop at Phoenix (PHX). United Airlines flights stop at Denver (DEN), and Delta flights stop at Salt Lake City (SLC). Alternatively, consider flights to San José Mineta International Airport (SJC) with Alaska Airlines, Southwest or United Airlines.

  • What airport should I land at for visiting the southeastern deserts of California?

    If you’re flying from St. Louis Lambert International Airport (STL) to California to visit the southeastern desert region, consider flights to Palm Springs International Airport (PSP). Delta provides layovers that stop at Salt Lake City International Airport (SLC), while American Airlines layovers stop at Phoenix Sky Harbor International Airport (PHX). Alternatively, consider flying to Ontario International Airport (ONT). Frontier Airlines, Delta, American Airlines and United Airlines offer flights with one stop.

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

    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 California.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to California 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 California?

    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 from St. Louis to California with an airline and back with another airline.

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

    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 from St. Louis to California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to California

  • Looking for a cheap flight? 25% of our users found tickets from St. Louis to the following destinations at these prices or less: Las Vegas $142 one-way - $297 round-trip; Los Angeles $241 one-way - $473 round-trip
  • St. Louis Lambert International Airport (STL) serves as a hub for Southern Airways Express. In addition, St. Louis Airport is a focus city for Southwest Airlines.
  • St. Louis Lambert International Airport has a variety of accessible services and facilities for passengers with reduced mobility. These include accessible restrooms, accessible parking, wide terminal interiors, and wheelchair assistance upon request.
  • Interested in the sustainability of flights from St. Louis to California? United Airlines, Delta, and American Airlines follow eco-friendly practices such as incorporating sustainable aviation fuel (SAF) into their fleets and aiming for net-zero carbon emissions by the year 2050.
  • Looking to explore the northeastern corner of California? Consider flights from St. Louis Lambert International Airport to Redding Regional Airport (RDD). United Airlines provides layovers that stop at Denver International Airport (DEN) and San Francisco Airport (SFO) before landing at Redding Airport.
  • If you are visiting the central coast region of California, consider one-stop layover flights to ​​Monterey Regional Airport (MRY). American Airlines’ layovers usually stop at Dallas or Charlotte, while United Airlines flights stop at Denver (DEN) or Atlanta (ATL).

Reviews of the top 5 airlines serving from St. Louis to California

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to California. 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 California? 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 4330 reviews
7.0Food
8.0Comfort
8.1Boarding
8.6Crew
7.5Entertainment
Airline reviews

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

4.0 Okaysangeetha, Apr 2026
AUS - SJC
Read more Southwest reviews

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

Boarding was easy. The seats are small and fairly uncomfortable

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

Snacks are always pretzels. Why can't you also offer peanuts ?

Mediocre. Boarding is now unpleasant. The employees, once friendly and nice, are now regularly speaking sternly to passengers, badgering them to do things right so they can take off on time and gate check bags because they don't have enough overhead bin space. The pretzel snack was crushed flat and broken into even smaller pieces, which happens frequently lately. Drink service was suspended before they reached my row.

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

Only downside was the legroom and seat width, which is always a problem unless I spend more for a premium seat.

3 hour delay. Had to change plans and was still delayed.

Everything went smoothly, although the usual gripes about airline travel were still present: the boarding process is inefficient, the snack selection is limited, and so on. Since there was extra space on the flight, the gate agent rearranged many people's seats to put people on the aisles and windows, leaving the middle seats empty, as much as possible, which was pretty great.

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

WiFi didn’t work most of the time. The usb chargers would work only occasionally for 5 mins and wouldn’t charge after that. Had to keep trying repeatedly at each of the seats in the row.

The crew bent over backwards to thank us for flying and make us comfortable. The food service was quick and efficient. The Captain communicated and said goodbye and thank you as we departed. They really stood out!

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

my mom urmila patel needed a wheelchair which was not available on the curbside. she needed to walk almost 50 meters inside (at the risk of falling) and then had to wait in line to get a wheelchair (this is not ok). Once obtained she had to seat in it for 30-45 minutes for someone to take her in thru the checkin process (which was fairly smooth and easy). the lady who helped her with her checkin process was very courteous and helpful

Staff at the check-in counter were friendly, happy and helpful. They tagged our bags and sent us to “bag drop off” but were not very clear about where that was. The airport was busy we headed off in what we thought was the right direction until a gentleman waved us down and actually came after us. He was the baggage handler for Delta and recognized our “deer in the headlights “ look-he brought us to the right area (which was marked as the Southwest Airlines Drop Off) and sent us on our way. Wonderful guy, low key and working with a big smile on his face. Loved it. Loved him.

Arlene was a great flight attendant. I also liked how one of the other flight attendants gave us a heads up about snacks and asked everyone to remove their headphones when it was their turn to order. Good idea.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

Checking in united could not figure out my star alliance gold. Baggage did not get marked priority and didn't receive boarding passes. When got to SFO lounge personal fixed everything Immediately

Flight left on time, arrived early, pleasant staff provided water, coffee, etc. access to bathrooms was reasonable and were well maintained. blankets were available, lots of entertainment options. LUGGAGE SERVICE WAS GREAT. I got my one checked bag quickly and was able to make a bus connection for a 2 hour bus ride saving me from waiting another 1.5 hours.

Terrible, if possible won't be flying again anytime soon!

Wonderful in-seat entertainment with seatback screens and huge selection of quality movies. The ability to bluetooth connect headphones was amazing.

Horrible service no Wi-Fi connection on both leg of the flight and they are refusing to fix bad service

I will never fly ANA again. They lost one of my large pieces of checked luggage, the heaviest one with the most valuable items in it, and they said they will not send me an email unless they can't find it, even though the paper they gave me to track the status of my lost luggage requires a code from an email they are supposed to send me so I can do baggage tracing. They claim to be an international airline, but they also insist on calling a Japanese telephone number to confirm where to send the lost baggage if they find it. It is impossible to find an actual contact email address for customer support on their website, and their AI chatbot is unhelpful, directing you to a webpage that says it is for contact information but does not have any actual email addresses or phone numbers listed on it. My seat in economy did not recline at all, even though I was not sitting in an exit row nor the very back row. I had to sit in the fully upright position for over ten hours of international travel. Awful experience overall.

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

Overall we had a good experience during our flight from San Francisco to Houston.

it was a very short flight so my expectations were low.

To have arrived on time and not 3 hours late after having already spent $100 to change to an earlier flight, only to arrive back home close to the original flight time.

American Airlines is a miserable experience. It is predictably miserable, in the sense that every time I fly American, I brace myself for the certainty that it will be unpleasant and uncomfortable. But it is unpredictable in the sense that I never know if the flight will be on time or delayed nine hours (both happened to me this week). I never know if I will be able to sit in the seat that I selected when I purchased the ticket or if I will be told by Customer Service (!!!) that I must relocate from first class to a seat in the back of the aircraft with no explanation (both happened to me this week). Will the food be frozen and half defrosted, or scalding hot? Will the drinks be warm? Will the flight attendants be surly and mean? Will the toilets be cramped and foul? Will the seats be narrow and uncomfortable? Will there be a real electric outlet at the seat, or just an unreliable USB-2 port? Will there be enough seats in the boarding lounge or just a few? Will the boarding process be smooth and efficient, or will the gate agents mess it up and delay it needlessly for 30 or 40 minutes? Will the catering and cleaning crew be prompt or will they take an extra 30 minutes? Will the brakes on the aircraft work properly, or will the pilot delay takeoff for four hours while the ground crew attends to what can only be described as routine maintenance that should have been done the night before? I've eexperienced every one of these unpleasant things this year, 2026. The only thing I can reliably count on is that American will find a new way to make the experience of flying as miserable as they possibly can.

Wifi was spotty. Tray table was very dirty when I sat down.

The WiFi would not connect enough for me to do my actual work. It permaspooled, disconnected, said it was connected, then wouldn't open an email... it was frustrating. I am not a tall person, 5'4" - and I felt cramped with little room to reach into my bag under the seat in front of me. I feel sorry for anyone taller than me having to fly. the one positive thing I will add, is the overhead bins are roomy enough to manage more bags than other carriers.

Going non stop to lax like I paid for. Not stopping in MCI for gas. Too long of delays

Delayed for mechanical and no updates on what was happening and how long the delay might be.

A first class seat should fit a fat person, and this doesn't. The trays in the armrest are less functional than an ordinary tray in the back of the seat.

The experience at checkin for my American Airlines flight from Sacramento to LAX was very good including the assistance I received in getting my bags checked in and boarding passes printed. Was pleasantly surprised the my bags were checked through all the way to my destination at Clark International Airport in Angeles, Philippines.

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.

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

They didn’t offer a water, even after I asked

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

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

Information on your arrival and departure airports