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Cheap flights from California to St. Louis from $56

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from California to St. Louis departing on 2/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from California to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
10:58 pm - 9:47 amLAS-STL
8h 49m1 stop
Frontier Logo
1:16 pm - 3:02 pmSTL-LAS
3h 46mnonstop
$122Frontier
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Sat, Dec 6 - Sun, Dec 7
Frontier Logo
4:28 pm - 9:48 pmLAS-STL
3h 20mnonstop
Frontier Logo
1:16 pm - 3:02 pmSTL-LAS
3h 46mnonstop
$123Frontier
Find Deal
Fri, Dec 5 - Mon, Dec 8
Frontier Logo
7:00 am - 12:12 pmLAS-STL
3h 12mnonstop
Frontier Logo
10:44 pm - 12:36 amSTL-LAS
3h 52mnonstop
$124Frontier
Find Deal
Thu, Dec 4 - Fri, Dec 12
Multiple Airlines Logo
12:17 pm - 2:46 pmSNA-STL
24h 29m1 stop
Multiple Airlines Logo
7:39 pm - 8:57 pmSTL-SNA
27h 18m2 stops
$163Multiple Airlines
Find Deal
Fri, Jan 23 - Fri, Jan 30
Multiple Airlines Logo
1:14 am - 11:33 pmLAX-STL
20h 19m2 stops
Multiple Airlines Logo
3:46 pm - 11:31 pmSTL-LAX
9h 45m1 stop
$190Multiple Airlines
Find Deal
Mon, Jan 26 - Wed, Jan 28
Delta Logo
7:15 am - 7:10 pmSJC-STL
9h 55m2 stops
Delta Logo
6:00 am - 3:54 pmSTL-SJC
11h 54m2 stops
$254Delta
Find Deal
Thu, Dec 11 - Tue, Dec 16
Delta Logo
7:15 am - 7:10 pmSJC-STL
9h 55m2 stops
Delta Logo
12:49 pm - 8:36 pmSTL-SJC
9h 47m1 stop
$286Delta
Find Deal
Thu, Dec 11 - Tue, Dec 16
Alaska Airlines Logo
6:15 am - 1:51 pmOAK-STL
29h 36m1 stop
Alaska Airlines Logo
7:00 am - 9:14 amSTL-OAK
28h 14m1 stop
$302Alaska Airlines
Find Deal
Fri, Feb 13 - Tue, Feb 17
Alaska Airlines Logo
2:31 pm - 2:27 pmOAK-STL
21h 56m1 stop
Alaska Airlines Logo
7:00 am - 11:59 pmSTL-OAK
18h 59m1 stop
$312Alaska Airlines
Find Deal
Sat, Dec 13 - Tue, Dec 16
American Airlines Logo
6:10 am - 1:51 pmSJC-STL
5h 41m1 stop
American Airlines Logo
7:38 am - 12:31 pmSTL-SJC
6h 53m1 stop
$318American Airlines
Find Deal
Tue, Dec 16 - Wed, Dec 17

Delta flights from California to St. Louis

Our best Delta deals on California to St. Louis flight tickets
Delta
Dec 11
SJC7:15 amSan Jose
9h 55m
2 stops
STL7:10 pmLambert-St Louis
Dec 16
STL6:00 amLambert-St Louis
11h 54m
2 stops
SJC3:54 pmSan Jose
$254
Find similar
Delta
Dec 11
SAN11:05 amSan Diego
11h 43m
2 stops
STL12:48 amLambert-St Louis
Dec 15
STL2:20 pmLambert-St Louis
10h 25m
2 stops
SAN10:45 pmSan Diego
$256
Find similar
Delta
Jan 8
SAN8:05 amSan Diego
7h 45m
1 stop
STL5:50 pmLambert-St Louis
Jan 9
STL5:00 pmLambert-St Louis
7h 47m
1 stop
SAN10:47 pmSan Diego
$259
Find similar

Frontier flights from California to St. Louis

Our best Frontier deals on California to St. Louis flight tickets
Frontier
Dec 4
LAS7:00 amLas Vegas Harry Reid Intl
3h 12m
STL12:12 pmLambert-St Louis
Dec 5
STL10:44 pmLambert-St Louis
3h 52m
LAS12:36 amLas Vegas Harry Reid Intl
$123
Find similar
Frontier
Dec 4
LAS7:00 amLas Vegas Harry Reid Intl
3h 12m
STL12:12 pmLambert-St Louis
Dec 8
STL1:16 pmLambert-St Louis
3h 46m
LAS3:02 pmLas Vegas Harry Reid Intl
$124
Find similar
Frontier
Jan 8
SFO8:58 amSan Francisco
23h 04m
1 stop
STL10:02 amLambert-St Louis
Jan 14
STL3:43 pmLambert-St Louis
7h 03m
1 stop
SFO8:46 pmSan Francisco
$125
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from California 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, momondo users made 832,500 searches. Data last updated November 20, 2025.
Use the filters below to find and compare flights from California to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Sat 12/6

10:58 pm-9:47 am

1 stop8h 49m

Lambert-St Louis

Sun 12/7

1:16 pm-3:02 pm

Nonstop3h 46m

$122

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Fri 12/5

4:28 pm-9:48 pm

Nonstop3h 20m

Lambert-St Louis

Mon 12/8

1:16 pm-3:02 pm

Nonstop3h 46m

$123

Las VegasSt. Louis

LAS - STL

LASSTL

Las Vegas Harry Reid Intl

Thu 12/4

7:00 am-12:12 pm

Nonstop3h 12m

Lambert-St Louis

Fri 12/12

10:44 pm-12:36 am

Nonstop3h 52m

$124

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Fri 1/23

12:17 pm-2:46 pm

1 stop24h 29m

Lambert-St Louis

Fri 1/30

7:39 pm-8:57 pm

2 stops27h 18m

$163

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Mon 1/26

1:14 am-11:33 pm

2 stops20h 19m

Lambert-St Louis

Wed 1/28

3:46 pm-11:31 pm

1 stop9h 45m

$190

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Thu 12/11

7:15 am-7:10 pm

2 stops9h 55m

Lambert-St Louis

Tue 12/16

6:00 am-3:54 pm

2 stops11h 54m

$254

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Thu 12/11

7:15 am-7:10 pm

2 stops9h 55m

Lambert-St Louis

Tue 12/16

12:49 pm-8:36 pm

1 stop9h 47m

$286

OaklandSt. Louis

OAK - STL

OAKSTL

Oakland

Fri 2/13

6:15 am-1:51 pm

1 stop29h 36m

Lambert-St Louis

Tue 2/17

7:00 am-9:14 am

1 stop28h 14m

$302

OaklandSt. Louis

OAK - STL

OAKSTL

Oakland

Sat 12/13

2:31 pm-2:27 pm

1 stop21h 56m

Lambert-St Louis

Tue 12/16

7:00 am-11:59 pm

1 stop18h 59m

$312

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Tue 12/16

6:10 am-1:51 pm

1 stop5h 41m

Lambert-St Louis

Wed 12/17

7:38 am-12:31 pm

1 stop6h 53m

$318

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from California to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

In general, October is the cheapest month to fly from California to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $336. The month of April is another great option to travel to St. Louis, with average flight prices from California averaging around $359.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $391. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $431. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from California in the evening is the least expensive time of day to depart. momondo users have found prices as low as $375 when looking at flights departing in the evening. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $426 per ticket.

What is the cheapest California to Lambert-St Louis flight route?

Fly from Sacramento Intl to Lambert-St Louis for the best California - Lambert-St Louis flight prices

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

You are more likely to see cheaper flights to St. Louis from California when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $398 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from California for as low as $305 on momondo.

What cabin class options are available on California to Lambert-St Louis flights?

There are 4 cabin classes available to choose from on California to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on California to St. Louis flights?

You could potentially save up to 34% on your flight if you consider stops on a California to St. Louis flight.

Cheap California to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from California to St. Louis

Best Price Found

$159

Fastest flight time

3h 05m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from California in the past 72 hours is $159. The best round-trip flight deal from California to St. Louis found on momondo in the last 72 hours is $296.
The fastest flight from California to St. Louis takes 3h 05m
Direct flights go from California to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
Search flight deals

  • When did momondo last update prices for flights from California to Lambert-St Louis Airport?

    Prices for flights from California to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from California to Lambert-St Louis Airport?

  • How old do you have to be to fly from California to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from California to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from California to St. Louis?

Best airlines flying from California to St. Louis

Compare and see reviews for airlines that fly from California to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $122Free CancellationRating
5.8
3,104 reviews
Search Frontier flights
DeltaPriceFrom $173Free CancellationRating
7.9
8,002 reviews
Search Delta flights
American AirlinesPriceFrom $202Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $245Free CancellationRating
8.0
11,322 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $246Free CancellationRating
7.4
9,028 reviews
Search United Airlines flights
SouthwestPriceFrom $283Free CancellationRating
8.0
4,249 reviews
Search Southwest flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
Eureka
Litchfield
Shrewsbury

Why use momondo?

Why should I use momondo to find a flight deal from California to St. Louis?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from California to St. Louis. momondo saves you time and could save you money on your trip.

Can I find flights from California to St. Louis with flexible booking policies on momondo?

Flights from California to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from California to St. Louis?

Once all potential California to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from California to St. Louis right now. Can momondo alert me if prices change?

If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from California and alert you when they change.

An easier way to manage your St. Louis trip

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