$80+ Cheap flights from St. Louis (STL) to California
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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
Aug 27 — Sep 31
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to California with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from St. Louis to CaliforniaExplore the most affordable flight options available from St. Louis to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.
Explore the most affordable flight options available from St. Louis to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Mon 8/247:58 pm
STL
- ONT
1 stop16h 06m
Frontier
Mon 8/316:00 am
ONT
- STL
1 stop11h 13m
Frontier
Deal found 7/27![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Wed 10/285:32 pm
STL
- LAS
Nonstop3h 43m
Frontier
Sat 10/315:18 pm
LAS
- STL
Nonstop3h 21m
Frontier
Deal found 7/26![Frontier logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Mon 8/317:58 pm
STL
- ONT
1 stop16h 06m
Frontier
Sun 9/66:00 am
ONT
- STL
1 stop11h 13m
Frontier
Deal found 7/24![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Mon 8/178:08 pm
STL
- LAS
1 stop16h 52m
Frontier
Thu 8/278:15 am
LAS
- STL
1 stop8h 58m
Frontier
Deal found 7/23![Frontier logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Mon 8/247:58 pm
STL
- LAS
1 stop5h 49m
Frontier
Thu 8/278:15 am
LAS
- STL
1 stop8h 58m
Frontier
Deal found 7/23![Frontier logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Mon 8/317:58 pm
STL
- ONT
1 stop16h 06m
Frontier
Thu 9/310:49 am
ONT
- STL
1 stop6h 24m
Frontier
Deal found 7/28![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Mon 9/218:10 pm
STL
- LAS
1 stop14h 18m
Frontier
Mon 9/286:45 am
LAS
- STL
1 stop10h 32m
Frontier
Deal found 7/23![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Thu 8/277:58 pm
STL
- LAS
1 stop5h 49m
Frontier
Sun 8/3012:57 am
LAS
- STL
1 stop16h 16m
Frontier
Deal found 7/27![Frontier logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Mon 8/247:58 pm
STL
- LAS
1 stop17h 02m
Frontier
Mon 8/316:00 am
LAS
- STL
1 stop11h 13m
Frontier
Deal found 7/27![Frontier logo]()
$194
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Thu 10/298:10 pm
STL
- ONT
1 stop16h 33m
Frontier
Thu 11/56:15 am
ONT
- STL
1 stop11h 00m
Frontier
Deal found 7/27![Frontier logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 8/286:17 pm
STL
- ONT
2 stops31h 33m
Frontier
Mon 8/3110:49 am
ONT
- STL
1 stop6h 24m
Frontier
Deal found 7/25![Frontier logo]()
$231
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Tue 8/255:27 pm
STL
- ONT
1 stop17h 09m
Frontier
Tue 9/17:56 pm
ONT
- STL
2 stops43h 26m
Frontier
Deal found 7/28![Frontier logo]()
$245
Best flights from St. Louis to CaliforniaDiscover carefully curated flight deals from St. Louis to California that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 28, 2026.
Discover carefully curated flight deals from St. Louis to California that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 28, 2026.
This Frontier deal was found by Cheapflights users on 7/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/38:10 pm
STL
- ONT
1 stop5h 37m
Frontier
Fri 10/92:58 pm
ONT
- STL
1 stop8h 19m
Frontier
Deal found 7/27![Frontier logo]()
$264
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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.
Sun 9/276:29 am
STL
- SAN
1 stop8h 52m
Alaska Airlines
Wed 9/306:55 am
SAN
- STL
1 stop8h 15m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$283
This Delta deal was found by Cheapflights users on 7/23. 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.
Fri 11/131:30 pm
STL
- SAN
1 stop7h 12m
Delta
Sun 11/155:00 pm
SAN
- STL
1 stop5h 36m
Delta
Deal found 7/23![Delta logo]()
$307
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/251:36 pm
STL
- SAN
2 stops8h 19m
United Airlines
Tue 9/112:33 pm
SAN
- STL
1 stop6h 13m
United Airlines
Deal found 7/27![United Airlines logo]()
$312
This Southwest deal was found by Cheapflights users on 7/28. 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 10/36:25 am
STL
- BUR
1 stop6h 50m
Southwest
Fri 10/92:25 pm
BUR
- STL
1 stop7h 20m
Southwest
Deal found 7/28![Southwest logo]()
$317
This Gotogate deal was found by Cheapflights users on 7/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:35 am
STL
- ONT
2 stops12h 35m
Multiple Airlines
Sat 9/57:56 pm
ONT
- STL
1 stop21h 17m
Multiple Airlines
Deal found 7/26![Multiple Airlines logo]()
$406
This CheapOair deal was found by Cheapflights users on 7/24. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/147:10 pm
STL
- SMF
1 stop22h 22m
Frontier
Sun 8/166:28 pm
SMF
- STL
1 stop21h 47m
Frontier
Deal found 7/24![Frontier logo]()
$279
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Tue 9/16:35 am
STL
- SJC
2 stops14h 34m
Alaska Airlines
Tue 9/88:17 pm
SJC
- STL
2 stops18h 53m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$284
This Delta deal was found by Cheapflights users on 7/23. 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.
Sat 11/141:30 pm
STL
- SAN
1 stop7h 12m
Delta
Sat 11/215:00 pm
SAN
- STL
1 stop5h 36m
Delta
Deal found 7/23![Delta logo]()
$307
This Alaska Airlines deal was found by Cheapflights users on 7/26. 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 9/306:29 am
STL
- SJC
2 stops14h 40m
Alaska Airlines
Tue 10/66:33 am
SJC
- STL
2 stops15h 26m
Alaska Airlines
Deal found 7/26![Alaska Airlines logo]()
$284
This Southwest deal was found by Cheapflights users on 7/23. 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 9/76:00 am
STL
- BUR
1 stop5h 40m
Southwest
Fri 9/1112:55 pm
BUR
- STL
2 stops7h 05m
Southwest
Deal found 7/23![Southwest logo]()
$322
This Booking.com deal was found by Cheapflights users on 7/23. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:45 pm
STL
- ONT
1 stop15h 18m
Frontier
Fri 9/118:07 am
ONT
- STL
1 stop7h 37m
Frontier
Deal found 7/23![Frontier logo]()
$296
This United Airlines deal was found by Cheapflights users on 7/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:10 am
STL
- BUR
2 stops8h 27m
United Airlines
Sat 8/299:35 am
BUR
- STL
2 stops9h 11m
United Airlines
Deal found 7/24![United Airlines logo]()
$327
This Alaska Airlines deal was found by Cheapflights users on 7/23. 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.
Mon 8/317:36 pm
STL
- SAN
1 stop17h 03m
Alaska Airlines
Tue 9/89:51 pm
SAN
- STL
2 stops17h 19m
Alaska Airlines
Deal found 7/23![Alaska Airlines logo]()
$285
This Delta deal was found by Cheapflights users on 7/24. 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 11/107:30 am
STL
- BUR
1 stop6h 36m
Delta
Mon 11/165:05 pm
BUR
- STL
1 stop5h 31m
Delta
Deal found 7/24![Delta logo]()
$317
This Southwest deal was found by Cheapflights users on 7/23. 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.
Wed 9/27:05 am
STL
- LGB
1 stop8h 00m
Southwest
Tue 9/82:05 pm
LGB
- STL
1 stop6h 45m
Southwest
Deal found 7/23![Southwest logo]()
$337
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/114:40 pm
STL
- BUR
1 stop6h 12m
United Airlines
Tue 8/259:00 am
BUR
- STL
2 stops11h 00m
United Airlines
Deal found 7/28![United Airlines logo]()
$342
This Delta deal was found by Cheapflights users on 7/27. 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.
Sat 9/127:05 am
STL
- BUR
1 stop7h 59m
Delta
Sun 9/132:06 pm
BUR
- STL
1 stop7h 36m
Delta
Deal found 7/27![Delta logo]()
$317
This Frontier deal was found by Cheapflights users on 7/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/118:10 pm
STL
- ONT
1 stop5h 45m
Frontier
Sun 10/252:58 pm
ONT
- STL
1 stop8h 19m
Frontier
Deal found 7/23![Frontier logo]()
$328
This Southwest deal was found by Cheapflights users on 7/24. 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.
Thu 9/178:25 am
STL
- LGB
1 stop8h 05m
Southwest
Mon 9/211:25 pm
LGB
- STL
1 stop7h 50m
Southwest
Deal found 7/24![Southwest logo]()
$337
This Delta deal was found by Cheapflights users on 7/26. 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.
Sat 8/298:00 am
STL
- BUR
1 stop6h 00m
Delta
Sat 9/52:00 pm
BUR
- STL
1 stop7h 31m
Delta
Deal found 7/26![Delta logo]()
$317
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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.
Fri 9/117:36 pm
STL
- SAN
1 stop17h 10m
Alaska Airlines
Tue 9/159:23 pm
SAN
- STL
2 stops17h 47m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$320
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:42 am
STL
- SFO
Nonstop4h 22m
United Airlines
Mon 8/315:00 am
SFO
- STL
1 stop8h 38m
United Airlines
Deal found 7/27![United Airlines logo]()
$363
This Trip.com deal was found by Cheapflights users on 7/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2412:27 pm
STL
- ONT
1 stop6h 32m
Frontier
Sun 9/278:24 pm
ONT
- STL
1 stop12h 53m
Frontier
Deal found 7/28![Frontier logo]()
$330
This Southwest deal was found by Cheapflights users on 7/24. 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 9/142:20 pm
STL
- LGB
2 stops8h 45m
Southwest
Thu 9/171:25 pm
LGB
- STL
1 stop7h 50m
Southwest
Deal found 7/24![Southwest logo]()
$342
This Expedia deal was found by Cheapflights users on 7/23. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:37 pm
STL
- SMF
1 stop18h 11m
Multiple Airlines
Sat 8/811:25 am
SMF
- STL
1 stop5h 58m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$468
This Delta deal was found by Cheapflights users on 7/28. 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 8/117:00 am
STL
- BUR
1 stop8h 01m
Delta
Tue 8/254:55 pm
BUR
- STL
2 stops13h 13m
Delta
Deal found 7/28![Delta logo]()
$322
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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.
Sat 9/56:08 pm
STL
- SJC
1 stop16h 54m
Alaska Airlines
Wed 9/97:02 am
SJC
- STL
1 stop8h 08m
Alaska Airlines
Deal found 7/27![Alaska Airlines logo]()
$337
This Southwest deal was found by Cheapflights users on 7/28. 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 9/149:05 pm
STL
- LAX
Nonstop4h 00m
Southwest
Mon 9/283:25 pm
LAX
- STL
1 stop5h 50m
Southwest
Deal found 7/28![Southwest logo]()
$347
This United Airlines deal was found by Cheapflights users on 7/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:40 pm
STL
- RNO
1 stop6h 18m
United Airlines
Thu 8/2010:15 am
RNO
- STL
2 stops8h 31m
United Airlines
Deal found 7/26![United Airlines logo]()
$384
Last-minute flights from St. Louis to CaliforniaDiscover last-minute flight deals from St. Louis to California. Data last updated July 28, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to California. Data last updated July 28, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Mon 8/178:08 pm
STL
- LAS
1 stop16h 52m
Frontier
Sat 8/227:36 am
LAS
- STL
2 stops31h 46m
Frontier
Deal found 7/25![Frontier logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Tue 8/188:00 am
STL
- LAS
Nonstop3h 33m
Frontier
Wed 8/269:04 pm
LAS
- STL
1 stop20h 09m
Frontier
Deal found 7/28![Frontier logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Tue 8/188:00 am
STL
- LAS
Nonstop3h 33m
Frontier
Mon 8/246:00 am
LAS
- STL
1 stop11h 13m
Frontier
Deal found 7/28![Frontier logo]()
$208
This Frontier deal was found by Cheapflights users on 7/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:45 pm
STL
- LAS
Nonstop3h 35m
Frontier
Sun 8/2312:25 pm
LAS
- STL
Nonstop3h 25m
Frontier
Deal found 7/28![Frontier logo]()
$213
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Thu 8/207:58 pm
STL
- LAS
1 stop5h 49m
Frontier
Sun 8/2312:57 am
LAS
- STL
1 stop16h 16m
Frontier
Deal found 7/27![Frontier logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Mon 8/247:58 pm
STL
- ONT
1 stop16h 06m
Frontier
Mon 8/316:00 am
ONT
- STL
1 stop11h 13m
Frontier
Deal found 7/27![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Mon 8/247:58 pm
STL
- LAS
1 stop5h 49m
Frontier
Thu 8/278:15 am
LAS
- STL
1 stop8h 58m
Frontier
Deal found 7/23![Frontier logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Mon 8/247:58 pm
STL
- LAS
1 stop17h 02m
Frontier
Mon 8/316:00 am
LAS
- STL
1 stop11h 13m
Frontier
Deal found 7/27![Frontier logo]()
$194
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Thu 8/277:58 pm
STL
- LAS
1 stop5h 49m
Frontier
Sun 8/3012:57 am
LAS
- STL
1 stop16h 16m
Frontier
Deal found 7/27![Frontier logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Sun 8/306:17 pm
STL
- ONT
2 stops41h 47m
Frontier
Fri 9/116:15 am
ONT
- STL
1 stop11h 02m
Frontier
Deal found 7/28![Frontier logo]()
$218
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Mon 8/317:58 pm
STL
- ONT
1 stop16h 06m
Frontier
Sun 9/66:00 am
ONT
- STL
1 stop11h 13m
Frontier
Deal found 7/24![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Mon 8/317:58 pm
STL
- ONT
1 stop16h 06m
Frontier
Thu 9/310:49 am
ONT
- STL
1 stop6h 24m
Frontier
Deal found 7/28![Frontier logo]()
$188
One-way flights from St. Louis to CaliforniaSearch for one-way flight options from St. Louis to California. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
Search for one-way flight options from St. Louis to California. Find affordable one-way fares based on user searches. Data last updated July 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Wed 10/285:32 pm
STL
- SAN
1 stop18h 51m
Frontier
Deal found 7/26![Frontier logo]()
$80
This Trip.com deal was found by Cheapflights users on 7/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:58 pm
STL
- ONT
1 stop16h 06m
Frontier
Deal found 7/28![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Mon 9/148:10 pm
STL
- ONT
1 stop16h 20m
Frontier
Deal found 7/25![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Sun 9/66:17 pm
STL
- LAS
2 stops19h 31m
Frontier
Deal found 7/23![Frontier logo]()
$92
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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.
Sat 10/246:02 am
STL
- SAN
1 stop10h 36m
Alaska Airlines
Deal found 7/28![Alaska Airlines logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Wed 10/285:32 pm
STL
- SFO
1 stop16h 51m
Frontier
Deal found 7/26![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Mon 9/288:10 pm
STL
- LAS
1 stop14h 18m
Frontier
Deal found 7/28![Frontier logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Mon 10/268:10 pm
STL
- LAS
1 stop29h 21m
Frontier
Deal found 7/25![Frontier logo]()
$97
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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.
Mon 8/247:36 pm
STL
- SAN
1 stop17h 03m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Thu 8/277:58 pm
STL
- LAS
1 stop5h 49m
Frontier
Deal found 7/27![Frontier logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Mon 8/247:58 pm
STL
- LAS
1 stop17h 02m
Frontier
Deal found 7/28![Frontier logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Mon 8/247:58 pm
STL
- SAN
1 stop15h 07m
Frontier
Deal found 7/26![Frontier logo]()
$103
Find flight deals from St. Louis to California
Keep the following information in mind while searching for St. Louis to California flight deals. Data was last updated July 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $161 (Kiwi.com) |
One-way from | $80 (Kiwi.com) |
Popular in | June |
Cheapest in | October |
Average price | $445 |
Good round-trip deal | $362 or less |
Good one-way deal | $196 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to California 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 July 28, 2026.
Use the filters below to find and compare flights from St. Louis to California that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Sat 10/3
8:10 pm-11:47 pm
1 stop5h 37m
Ontario
Fri 10/9
2:58 pm-1:17 am
1 stop8h 19m
$264
St. LouisSacramento
STL - SMF
STLSMF
Lambert-St Louis
Fri 8/14
7:10 pm-3:32 pm
1 stop22h 22m
Sacramento Intl
Sun 8/16
6:28 pm-6:15 pm
1 stop21h 47m
$279
St. LouisSan Diego
STL - SAN
STLSAN
Lambert-St Louis
Sun 9/27
6:29 am-1:21 pm
1 stop8h 52m
San Diego
Wed 9/30
6:55 am-5:10 pm
1 stop8h 15m
$283
St. LouisSan Jose
STL - SJC
STLSJC
Lambert-St Louis
Tue 9/1
6:35 am-7:09 pm
2 stops14h 34m
San Jose
Tue 9/8
8:17 pm-5:10 pm
2 stops18h 53m
$284
St. LouisSan Jose
STL - SJC
STLSJC
Lambert-St Louis
Wed 9/30
6:29 am-7:09 pm
2 stops14h 40m
San Jose
Tue 10/6
6:33 am-11:59 pm
2 stops15h 26m
$284
St. LouisSan Diego
STL - SAN
STLSAN
Lambert-St Louis
Mon 8/31
7:36 pm-10:39 am
1 stop17h 03m
San Diego
Tue 9/8
9:51 pm-5:10 pm
2 stops17h 19m
$285
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
Thu 9/3
6:45 pm-8:03 am
1 stop15h 18m
Ontario
Fri 9/11
8:07 am-5:44 pm
1 stop7h 37m
$296
St. LouisSan Diego
STL - SAN
STLSAN
Lambert-St Louis
Fri 11/13
1:30 pm-6:42 pm
1 stop7h 12m
San Diego
Sun 11/15
5:00 pm-12:36 am
1 stop5h 36m
$307
St. LouisSan Diego
STL - SAN
STLSAN
Lambert-St Louis
Sat 11/14
1:30 pm-6:42 pm
1 stop7h 12m
San Diego
Sat 11/21
5:00 pm-12:36 am
1 stop5h 36m
$307
St. LouisSan Diego
STL - SAN
STLSAN
Lambert-St Louis
Tue 8/25
1:36 pm-7:55 pm
2 stops8h 19m
San Diego
Tue 9/1
12:33 pm-8:46 pm
1 stop6h 13m
$312
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from St. Louis to California
Have a flexible travel schedule? Discover the best time to fly to California from St. Louis with our price prediction graph.
STL-ONT
STL-SAN
STL-BUR
STL-SMF
STL-SJC
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 St. Louis to California
STL-USCA
STL-ONT
STL-SAN
STL-BUR
STL-SMF
What is the cheapest month to book a flight from St. Louis to California?
Currently, October is the cheapest month in which you can book a flight from St. Louis to California (average of $369). Flying from St. Louis to California in June is currently the most expensive (average of $477). 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 STL to CA?
Find hourly flight availability from St. Louis to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 28, 2026.
It’s optimal to fly from St. Louis to California in the morning. By choosing this option you can save up to 23% on the cost of your flight, compared to a flight at noon.
Weekly flight availability from St. Louis to California
Explore weekly flight availability from St. Louis to California. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 28, 2026.
The most flights from STL to USCA are scheduled on a Tuesday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).
How much does it cost to fly round-trip from St. Louis to California?
Airfare is below average for this route at the moment.
St. Louis to California flights typically cost between $336 and $457 in November.The cheapest round-trip price found within the last 5 days was $323 on Frontier (Nov 13-Nov 15).
How far ahead should I book a flight from St. Louis to California?
The best time to book flights from St. Louis to California is 43 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest day to fly from St. Louis to California?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to California. Price data was last updated on February 17, 2026.
Travelers seeking maximum savings on their St. Louis to California flight should consider departing on Tuesday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing California
Get insights into the airlines that provide service to California. 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 California. Reviews last updated July 28, 2026.
Read through reviews of airlines operating flights from St. Louis to California, such as Southwest,Delta, andUnited Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from St. Louis to California. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to California
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Complete your trip
Complete your trip to California by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to California by cabin class
Find flights from St. Louis to California, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and California flights
Browse other St. Louis and California flight options. Last updated on July 28, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
St. Louis to California flights
Consider these flights traveling from St. Louis to California.
Top 7 airlines flying from St. Louis to California
Discover the top 7 airlines that operate flights from St. Louis to California. 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 July 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$118 | Average$363 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$140 | Average$269 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$182 | Average$442 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$182 | Average$428 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$286 | Average$483 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$304 | Average$384 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$385 | Average$531 | FlexibilityNo cancel fee | On-time75% |