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Cheap Flights from St. Louis to California

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Sort by: Cheapest
Ontario
5h 20m2 stops
from $167per person
San Diego
3h 55mNonstop
from $212per person
Sacramento
4h 15mNonstop
from $213per person
Santa Ana
5h 47m2 stops
from $266per person
Los Angeles
4h 00mNonstop
from $323per person
San Francisco
4h 20mNonstop
from $356per person
Oakland
6h 12m2 stops
from $357per person
San Jose
5h 50m2 stops
from $371per person
Burbank
5h 40m2 stops
from $382per person
Palm Springs
5h 20m2 stops
from $393per person
Long Beach
5h 50m2 stops
from $414per person
Fresno
6h 14m2 stops
from $417per person
Explore the map
Booking Insights

Price, demand and travel trends for St. Louis to California flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from St. Louis to California recently?

Here are the cheapest round-trip fares from St. Louis to California on KAYAK in the last week:

• Ontario (ONT) from $182
• Los Angeles (LAX) from $350
• San Diego (SAN) from $356
• San Jose (SJC) from $377

How do fares into airports in California compare?

According to KAYAK data from the last 12 months, the cheapest airports to fly into California from St. Louis are:

• Hollywood Burbank (BUR) (avg. price $397)
• San Diego (SAN) (avg. price $398)
• Ontario (ONT) (avg. price $398)

Are flights from St. Louis to California cheaper or more expensive than last year?

Fares from St. Louis to California are about 7% higher than they were in November last year, averaging $438 round-trip.

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

February is typically the cheapest month to fly from St. Louis to California, with round-trip fares averaging $412. June and October are usually the most expensive, averaging $496 and $480, respectively.

How do fares from St. Louis to California vary by day of the week?

On average, Wednesday is the cheapest day to fly from St. Louis to California and Monday is the most expensive. Looking at the past 12 months of KAYAK data, it's 27% more expensive to fly on a Monday compared to Wednesday.

What's the best time of day to fly from St. Louis to California?

It's cheapest to fly to California at night with average prices of $397. The morning is the most expensive time to fly, with average prices of $498.

What's the best time to book a flight from St. Louis to California?

Book your flights 23 weeks before your trip. KAYAK data collected over the past 12 months shows that booking in this window can save you around 33% compared to booking at the last minute (within 2 weeks of departure).

Key details for St. Louis to California flights

Low season

December

Cheapest flight

$84
Beat the crowds with an average 21% drop in travelers.
The most popular month to fly with an average 28% increase in travelers.
One-way flight from St. Louis to Ontario

Your St. Louis to California flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from St. Louis to California?

    Yes. Fares from St. Louis to California are low right now. As a rule of thumb, a round-trip under $357 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from St. Louis to California?

    Over the past 12 months, round-trip fares from St. Louis to California have typically cost between $357 and $595.

  • What are the main airports serving California?

    There are 43 airports in California. 26% of KAYAK users choose Los Angeles (LAX) as their arrival airport, while 23% choose San Francisco (SFO).

  • Which airlines fly nonstop from St. Louis to California?

    Based on the flight schedule for the next 3 months, 3 airlines offer nonstop flights on this route:

    • Southwest
    • United Airlines
    • American Airlines

  • Which destinations in California can I fly nonstop from St. Louis?

    Based on the flight schedule for the next 3 months, you can fly nonstop from St. Louis to 5 destinations in California. The most popular among KAYAK travelers are Los Angeles, San Francisco and San Diego.

  • Is it cheaper to fly with a layover from St. Louis to California?

    Yes, nonstop flights from St. Louis to California average $527 over the past 12 months, but flights with a layover can cost less. The most affordable connecting airports are:

    • Orlando (MCO) (avg. price $219)
    • Detroit Metropolitan Wayne County (DTW) (avg. price $356)
    • Omaha Eppley Airfield (OMA) (avg. price $362)

  • How long is a flight from St. Louis to California?

    Nonstop flights from St. Louis to California take 4h 23m on average. The fastest scheduled flight takes 3h 55m, flying into Hollywood Burbank (BUR).

  • Which cabin classes are available from St. Louis to California?

    On flights from St. Louis to California you can book Economy Class, Business Class or First Class.

  • What are some popular landmarks around California?

    California is home to many popular sights. KAYAK travelers' favorites include:

    • Universal Studios Hollywood
    • Gaslamp Quarter
    • Fisherman's Wharf
    • Venice Beach

  • What are the earliest and latest flights from St. Louis to California?

    The earliest nonstop flight from St. Louis to California departs at 5:05 am and the latest leaves at 10:50 pm. Nonstop flights take about 4h 23m.

  • 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.

Your guide to booking St. Louis to California flights

Get tips on when to book, when to fly and what to know before your trip.
  • If you can plan ahead, the sweet spot for booking your flight is 23 weeks before your trip. KAYAK data shows fares in this window are around 33% lower than last-minute bookings (made within 2 weeks of departure). Not ready to commit? Set a Price Alert and we'll let you know when prices change.
  • Flexible with your dates? Fly in February to save some money. It's typically the cheapest month on this route, while flights in June will cost you the most.
  • Fly out on a Wednesday to get the cheapest fares. Avoid Monday flights, which are about 27% more expensive.
  • If you're watching your budget, fly into Hollywood Burbank (BUR) which has the lowest average airfare in the region. Just remember to budget for any onward travel by bus, car or domestic flight.
  • Start your trip in San Diego, the most popular destination in California. From there, it's easy to continue on to other popular spots such as Los Angeles, San Francisco and Anaheim.
  • Whether you're trying to save time or money, Hollywood Burbank (BUR) is usually your best option from St. Louis.
  • 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

 
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 4222 reviews
8.1Boarding
7.0Food
7.5Entertainment
8.6Crew
8.0Comfort
Airline reviews

Trash experience on all my flights this week. Delay after delay. The flight I’m waiting for has been delayed 6 times and nearly 3 hours.

2.0 MediocrePhilip, Sep 2026
Read more Southwest reviews

Trash experience on all my flights this week. Delay after delay. The flight I’m waiting for has been delayed 6 times and nearly 3 hours.

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.

The flight was delayed due to earlier issues at other airports. The crew was excellent & made it a good trip.

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

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

Very good. Sad to learn Southwest is going start to charge for bags

Exceptional crew! Friendly and professional. Pleasant attitude and treated everyone with respect.

The flight was promptly on schedule and Southwest delivered everything they promised. No excuses for any shortfalls just 100% ownership of their responsibilities and business. The boarding and seating policy is a complete shambles. What started out as a great idea when Southwest first hit the market has been turned into a disaster due to the lack of integrity in many of the people who fly Southwest and take advantage of Southwest generosity at the expense of their fellow passengers.

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.

Left on time and arrived early. Brand new plane and no parts missing. Comfortable seats. The actual Captain spoke prior to the flight and reassured everyone about safety. Crew was so nice and fun. Perfect flight!

The bathroom is disgustingly dirty. It looks like the crew members didn’t clean it on a regular basis. Also, who made the bathroom so small?. I am not a big girl but I still feel very cramped inside. Def unpleasant experience to use the bathroom.

The flight was delayed and passengers were told that they will miss connections as flight may get 40-55 min late.

dropped my bags at Seattle Delta curbside. 1.5 hours before departure. one bag oversized made it. the other was left at curb and mishandled. poor communication from delta in sjc baggage claim. No internet on flight and food choices in business are horrible. You are forcing us to fly Alaska which is shockingly better than the Delta experience. that is a low bar.

attendents were rude and the boarding was disjointed and poor

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

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.

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

We were delayed 2 hours leaving STL. I had 20 mins from when we landed in SLC terminal A to make it to SLC terminal B. I had to actually run! thankfully I made my flight but 3/4 legs were delayed to some capacity.

Starlink internet made the flight time shrink and I was able to work.

The plane was so old. I paid a ridiculous amount to fly business and there was no internet for six hours! This can't be happening in 2026 and especially in cross country flights where there are a high volume of business travelers.

Requested for warm or hot water because of throat pain, it was denied. The entertainment system was hung, requested the crew to turn it off, instead of turning it off they rebooted the device. It was stuck again, no one bothered to check.

On boarding crew at the airport called in the boarding numbers too early meaning before the previous line was completed resulting in later numbers getting to board ahead. Also she asked those who boarded from number 3 to have the tags in their carry-on bags and leave it in the jet bridge. Most of the overhead bins were empty though. This is more work for the ground staff in addition to more inconvenience for passengers waiting to get their carry-ons from the jet bridge.

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.

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.

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

Overall boarding and debarking is a joke. I dont even bring luggage anymore on trips because you can never allow them to be place then in the overhead bin or you have to pay or you check them which is even worse having to wait for your luggage on the tarmac.

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.

It got me to my destination? However we were an hour delayed departing, and we never received any updates or notifications from staff. Poor communication and customer service.

My experience with Frontier was terrible. We were delayed for 2 hours. At one point during the wait at the gate I left to go get a sandwich - I was gone probably 15 minutes. In my absence, they decided to move our flight up, boarded and left. When I came back the two attendants were very rude and I unavoidably had to purchase another ticket on the next flight. During this whole time, the Frontier app did not update the departure time, so I was SOL.

Flight was delayed by about an hour, once we arrived at LAX we had to take a shuttle to the baggage claim - it was completely disorganized. The agents at the shuttles were rude and unable to provide any information. Frontier charges extra for everything from bags to drinks - at the end it ends up being more expensive than flying the better airlines

Tiny seats, no entertainment, no amenities, delays, they charge for carry on and their allowed personal item is smaller than in other airlines.

I really didn't like anything. Paid for my checked luggage online ($79) and then was told that I would have to paid another $79 for my carry on. Was not allowed to enter the terminal until 3 hours before my flight and when I finally was allowed to check my bag and enter, my flight was delayed 3 times. When I finally landed, we were all instructed to "run off the plane" as they had to do a quick turn around to Las Vegas. Me and several of my flying companions will never fly Frontier again.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

i was unable to check in the flight. refund requested

I think Frontier was very good at communication. Their app worked very well. Loading was great and the flight was nice and easy.

I have come to accept Frontier as an absolute no-frills airline, paying for everything I want. A 4.5-hour flight should provide me with a complimentary beverage—rather, $4.9x for a soda. Or a bottle of water ought to be extended at no cost. 4 beers are on the menu, but only 1 type of beer is available (at $9.95). Also, so many restrictions to using a voucher from Barclay‘s Credit Card. Finally, try to reach a live agent for Frontier- impossible!

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