$63+ 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 5/26. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
Touko 28 — kesä 41
Round-trip
1 adult, Economy
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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 huhtikuu 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 huhtikuu 28, 2026.
This Booking.com deal was found by Cheapflights users on 4/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 5/196:51 pm
STL
- ONT
1 stop22h 53m
Frontier
su 5/2410:50 am
ONT
- STL
1 stop6h 33m
Frontier
Deal found 4/24![Frontier logo]()
$167
This CheapOair deal was found by Cheapflights users on 4/24. 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.
pe 5/159:18 pm
STL
- RNO
1 stop19h 10m
Frontier
ma 5/1811:27 am
RNO
- STL
1 stop28h 39m
Frontier
Deal found 4/24![Frontier logo]()
$171
This Booking.com deal was found by Cheapflights users on 4/23. 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.
pe 5/159:18 pm
STL
- ONT
1 stop19h 51m
Frontier
ke 5/204:39 pm
ONT
- STL
1 stop25h 32m
Frontier
Deal found 4/23![Frontier logo]()
$172
This CheapOair deal was found by Cheapflights users on 4/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 5/238:08 pm
STL
- ONT
1 stop15h 57m
Frontier
la 5/3010:50 am
ONT
- STL
1 stop6h 33m
Frontier
Deal found 4/23![Frontier logo]()
$185
This Frontier deal was found by Cheapflights users on 4/23. 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.
su 5/1012:36 pm
STL
- SNA
1 stop25h 43m
Frontier
ma 5/188:14 pm
SNA
- STL
1 stop19h 52m
Frontier
Deal found 4/23![Frontier logo]()
$185
This Booking.com deal was found by Cheapflights users on 4/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 5/266:51 pm
STL
- ONT
1 stop15h 13m
Frontier
ti 6/26:00 am
ONT
- STL
1 stop11h 23m
Frontier
Deal found 4/26![Frontier logo]()
$187
This Super.com deal was found by Cheapflights users on 4/28. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 5/236:30 pm
STL
- ONT
1 stop15h 34m
Frontier
ke 5/2710:50 am
ONT
- STL
1 stop6h 33m
Frontier
Deal found 4/28![Frontier logo]()
$191
This Booking.com deal was found by Cheapflights users on 4/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 5/126:51 pm
STL
- ONT
1 stop22h 53m
Frontier
ma 5/1811:36 am
ONT
- STL
1 stop28h 30m
Frontier
Deal found 4/24![Frontier logo]()
$193
This CheapOair deal was found by Cheapflights users on 4/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 5/266:51 pm
STL
- RNO
1 stop21h 44m
Frontier
su 5/313:23 pm
RNO
- STL
1 stop26h 48m
Frontier
Deal found 4/28![Frontier logo]()
$196
This Frontier deal was found by Cheapflights users on 4/27. 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.
ma 8/248:21 pm
STL
- LAS
Nonstop3h 38m
Frontier
pe 8/282:10 pm
LAS
- STL
Nonstop3h 26m
Frontier
Deal found 4/27![Frontier logo]()
$198
This Cheapflightsfares deal was found by Cheapflights users on 4/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 5/97:08 pm
STL
- LAS
1 stop6h 46m
Frontier
ti 5/126:45 am
LAS
- STL
1 stop8h 48m
Frontier
Deal found 4/25![Frontier logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
ma 5/185:27 pm
STL
- LAS
1 stop21h 26m
Frontier
la 5/236:00 am
LAS
- STL
1 stop11h 31m
Frontier
Deal found 4/26![Frontier logo]()
$202
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 huhtikuu 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 huhtikuu 28, 2026.
This American Airlines deal was found by Cheapflights users on 4/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 5/125:51 am
STL
- SMF
1 stop6h 57m
American Airlines
la 5/1612:34 am
SMF
- STL
1 stop9h 13m
American Airlines
Deal found 4/23![American Airlines logo]()
$263
This Frontier deal was found by Cheapflights users on 4/27. 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.
la 6/202:56 pm
STL
- ONT
1 stop6h 55m
Frontier
ti 6/236:00 am
ONT
- STL
1 stop11h 23m
Frontier
Deal found 4/27![Frontier logo]()
$270
This Delta deal was found by Cheapflights users on 4/27. 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.
ke 5/207:59 pm
STL
- SAN
1 stop5h 44m
Delta
pe 5/293:30 pm
SAN
- STL
1 stop5h 51m
Delta
Deal found 4/27![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 4/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 5/235:20 pm
STL
- SAN
1 stop6h 25m
Southwest
ke 5/277:05 am
SAN
- STL
Nonstop3h 30m
Southwest
Deal found 4/27![Southwest logo]()
$315
This United Airlines deal was found by Cheapflights users on 4/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 5/237:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
la 5/305:05 am
SFO
- STL
1 stop8h 41m
United Airlines
Deal found 4/23![United Airlines logo]()
$363
This Alaska Airlines deal was found by Cheapflights users on 4/25. 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.
ke 10/147:00 am
STL
- SMF
1 stop9h 04m
Alaska Airlines
ke 10/2112:57 pm
SMF
- STL
1 stop9h 02m
Alaska Airlines
Deal found 4/25![Alaska Airlines logo]()
$399
This Frontier deal was found by Cheapflights users on 4/27. 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.
ma 6/152:56 pm
STL
- ONT
1 stop6h 55m
Frontier
ti 6/236:00 am
ONT
- STL
1 stop11h 23m
Frontier
Deal found 4/27![Frontier logo]()
$270
This Delta deal was found by Cheapflights users on 4/26. 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.
pe 5/227:59 pm
STL
- SAN
1 stop5h 44m
Delta
ma 5/256:30 am
SAN
- STL
1 stop6h 01m
Delta
Deal found 4/26![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 4/23. 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.
ke 5/278:25 am
STL
- SAN
Nonstop4h 00m
Southwest
la 5/307:35 am
SAN
- STL
Nonstop3h 30m
Southwest
Deal found 4/23![Southwest logo]()
$324
This Delta deal was found by Cheapflights users on 4/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ke 5/207:59 pm
STL
- SAN
1 stop5h 44m
Delta
ke 5/276:30 am
SAN
- STL
1 stop8h 16m
Delta
Deal found 4/25![Delta logo]()
$297
This CheapOair deal was found by Cheapflights users on 4/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 7/62:52 pm
STL
- ONT
1 stop26h 15m
Frontier
ti 7/141:28 pm
ONT
- STL
1 stop26h 37m
Frontier
Deal found 4/25![Frontier logo]()
$325
This United Airlines deal was found by Cheapflights users on 4/27. 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.
ti 5/197:45 am
STL
- LAS
1 stop6h 43m
United Airlines
ke 5/209:05 am
LAS
- STL
1 stop5h 52m
United Airlines
Deal found 4/27![United Airlines logo]()
$379
This Southwest deal was found by Cheapflights users on 4/23. 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.
ti 5/125:30 am
STL
- SMF
2 stops8h 00m
Southwest
su 5/1711:55 pm
SMF
- STL
1 stop7h 10m
Southwest
Deal found 4/23![Southwest logo]()
$349
This Alaska Airlines deal was found by Cheapflights users on 4/27. 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.
ti 6/25:33 pm
STL
- OAK
1 stop17h 22m
Alaska Airlines
ke 6/31:01 pm
OAK
- STL
1 stop8h 53m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$406
This United Airlines deal was found by Cheapflights users on 4/27. 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.
la 5/301:13 pm
STL
- LAS
2 stops12h 44m
United Airlines
su 5/3112:36 am
LAS
- STL
1 stop6h 05m
United Airlines
Deal found 4/27![United Airlines logo]()
$384
This Delta deal was found by Cheapflights users on 4/23. 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.
ti 6/23:11 pm
STL
- SNA
1 stop7h 23m
Delta
la 6/62:00 pm
SNA
- STL
1 stop7h 59m
Delta
Deal found 4/23![Delta logo]()
$351
This Southwest deal was found by Cheapflights users on 4/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pe 7/247:15 pm
STL
- SAN
1 stop6h 10m
Southwest
ti 7/286:45 am
SAN
- STL
Nonstop3h 45m
Southwest
Deal found 4/27![Southwest logo]()
$373
This Alaska Airlines deal was found by Cheapflights users on 4/23. 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.
la 5/165:33 pm
STL
- RNO
1 stop7h 28m
Alaska Airlines
ke 5/202:27 pm
RNO
- STL
1 stop7h 27m
Alaska Airlines
Deal found 4/23![Alaska Airlines logo]()
$424
This United Airlines deal was found by Cheapflights users on 4/26. 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.
la 5/231:13 pm
STL
- LAS
2 stops12h 44m
United Airlines
ke 5/276:00 am
LAS
- STL
2 stops13h 10m
United Airlines
Deal found 4/26![United Airlines logo]()
$389
This Southwest deal was found by Cheapflights users on 4/24. 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.
su 7/269:35 pm
STL
- SAN
Nonstop3h 40m
Southwest
pe 7/316:55 pm
SAN
- STL
1 stop4h 55m
Southwest
Deal found 4/24![Southwest logo]()
$373
This Delta deal was found by Cheapflights users on 4/27. 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.
to 5/217:59 pm
STL
- SAN
1 stop5h 44m
Delta
ma 5/256:30 am
SAN
- STL
1 stop6h 01m
Delta
Deal found 4/27![Delta logo]()
$388
This Alaska Airlines deal was found by Cheapflights users on 4/25. 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.
ke 5/275:33 pm
STL
- SJC
1 stop7h 26m
Alaska Airlines
to 5/281:14 pm
SJC
- STL
1 stop8h 40m
Alaska Airlines
Deal found 4/25![Alaska Airlines logo]()
$431
This Southwest deal was found by Cheapflights users on 4/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 7/213:05 pm
STL
- LAX
1 stop8h 05m
Southwest
ti 7/285:00 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 4/27![Southwest logo]()
$383
This United Airlines deal was found by Cheapflights users on 4/26. 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.
ke 10/141:36 pm
STL
- SMF
2 stops11h 23m
United Airlines
ke 10/2110:14 am
SMF
- STL
2 stops10h 16m
United Airlines
Deal found 4/26![United Airlines logo]()
$427
This Delta deal was found by Cheapflights users on 4/23. 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.
pe 5/293:11 pm
STL
- RNO
2 stops10h 14m
Delta
ma 6/17:05 am
RNO
- STL
2 stops9h 58m
Delta
Deal found 4/23![Delta logo]()
$397
This Alaska Airlines deal was found by Cheapflights users on 4/26. 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.
pe 10/233:24 pm
STL
- SMF
1 stop8h 29m
Alaska Airlines
ma 10/2612:57 pm
SMF
- STL
1 stop9h 02m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$441
This Southwest deal was found by Cheapflights users on 4/24. 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.
ma 6/17:20 pm
STL
- LAX
1 stop5h 55m
Southwest
ti 6/95:00 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 4/24![Southwest logo]()
$385
This Delta deal was found by Cheapflights users on 4/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 5/234:00 pm
STL
- SJC
1 stop8h 55m
Delta
ti 6/210:00 pm
SJC
- STL
1 stop8h 18m
Delta
Deal found 4/25![Delta logo]()
$397
This United Airlines deal was found by Cheapflights users on 4/24. 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.
la 5/307:23 pm
STL
- SFO
Nonstop4h 20m
United Airlines
su 5/3112:12 pm
SFO
- STL
Nonstop4h 05m
United Airlines
Deal found 4/24![United Airlines logo]()
$443
This Alaska Airlines deal was found by Cheapflights users on 4/26. 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.
su 5/107:00 am
STL
- SMF
1 stop9h 12m
Alaska Airlines
ke 5/137:00 am
SMF
- STL
1 stop9h 45m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$458
Last-minute flights from St. Louis to CaliforniaDiscover last-minute flight deals from St. Louis to California. Data last updated huhtikuu 28, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to California. Data last updated huhtikuu 28, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 4/23. 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.
to 5/712:36 pm
STL
- ONT
1 stop21h 13m
Frontier
su 5/106:00 am
ONT
- STL
1 stop11h 23m
Frontier
Deal found 4/23![Frontier logo]()
$205
This Cheapflightsfares deal was found by Cheapflights users on 4/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pe 5/84:19 pm
STL
- LAS
1 stop30h 28m
Frontier
la 5/912:29 am
LAS
- STL
1 stop16h 54m
Frontier
Deal found 4/24![Frontier logo]()
$204
This CheapOair deal was found by Cheapflights users on 4/24. 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.
pe 5/89:18 pm
STL
- ONT
1 stop19h 51m
Frontier
ma 5/1111:36 am
ONT
- STL
1 stop28h 30m
Frontier
Deal found 4/24![Frontier logo]()
$211
This Frontier deal was found by Cheapflights users on 4/23. 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.
su 5/1012:36 pm
STL
- SNA
1 stop25h 43m
Frontier
ma 5/188:14 pm
SNA
- STL
1 stop19h 52m
Frontier
Deal found 4/23![Frontier logo]()
$185
This Booking.com deal was found by Cheapflights users on 4/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 5/126:51 pm
STL
- ONT
1 stop22h 53m
Frontier
ma 5/1811:36 am
ONT
- STL
1 stop28h 30m
Frontier
Deal found 4/24![Frontier logo]()
$193
This CheapOair deal was found by Cheapflights users on 4/24. 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.
pe 5/159:18 pm
STL
- RNO
1 stop19h 10m
Frontier
ma 5/1811:27 am
RNO
- STL
1 stop28h 39m
Frontier
Deal found 4/24![Frontier logo]()
$171
This Booking.com deal was found by Cheapflights users on 4/23. 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.
pe 5/159:18 pm
STL
- ONT
1 stop19h 51m
Frontier
ke 5/204:39 pm
ONT
- STL
1 stop25h 32m
Frontier
Deal found 4/23![Frontier logo]()
$172
This Booking.com deal was found by Cheapflights users on 4/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 5/196:51 pm
STL
- ONT
1 stop22h 53m
Frontier
su 5/2410:50 am
ONT
- STL
1 stop6h 33m
Frontier
Deal found 4/24![Frontier logo]()
$167
This CheapOair deal was found by Cheapflights users on 4/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 5/238:08 pm
STL
- ONT
1 stop15h 57m
Frontier
la 5/3010:50 am
ONT
- STL
1 stop6h 33m
Frontier
Deal found 4/23![Frontier logo]()
$185
This Super.com deal was found by Cheapflights users on 4/28. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 5/236:30 pm
STL
- ONT
1 stop15h 34m
Frontier
ke 5/2710:50 am
ONT
- STL
1 stop6h 33m
Frontier
Deal found 4/28![Frontier logo]()
$191
This Booking.com deal was found by Cheapflights users on 4/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 5/266:51 pm
STL
- ONT
1 stop15h 13m
Frontier
ti 6/26:00 am
ONT
- STL
1 stop11h 23m
Frontier
Deal found 4/26![Frontier logo]()
$187
This CheapOair deal was found by Cheapflights users on 4/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 5/266:51 pm
STL
- RNO
1 stop21h 44m
Frontier
su 5/313:23 pm
RNO
- STL
1 stop26h 48m
Frontier
Deal found 4/28![Frontier logo]()
$196
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 huhtikuu 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 huhtikuu 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
ti 5/268:08 pm
STL
- SAN
1 stop14h 34m
Frontier
Deal found 4/27![Frontier logo]()
$63
This Trip.com deal was found by Cheapflights users on 4/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ke 5/278:08 pm
STL
- SNA
1 stop15h 01m
Frontier
Deal found 4/27![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 4/27. 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.
ti 6/98:08 pm
STL
- LAS
1 stop23h 21m
Frontier
Deal found 4/27![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 4/25. 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.
la 5/168:08 pm
STL
- LAS
1 stop5h 21m
Frontier
Deal found 4/25![Frontier logo]()
$79
This Super.com deal was found by Cheapflights users on 4/28. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 5/266:51 pm
STL
- ONT
1 stop15h 13m
Frontier
Deal found 4/28![Frontier logo]()
$85
This Super.com deal was found by Cheapflights users on 4/23. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pe 5/159:18 pm
STL
- SFO
1 stop15h 18m
Frontier
Deal found 4/23![Frontier logo]()
$85
This Super.com deal was found by Cheapflights users on 4/23. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pe 5/159:18 pm
STL
- SAN
1 stop25h 46m
Frontier
Deal found 4/23![Frontier logo]()
$85
This Jettzy deal was found by Cheapflights users on 4/26. 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
la 5/236:30 pm
STL
- ONT
1 stop15h 34m
Frontier
Deal found 4/26![Frontier logo]()
$86
This iWofly deal was found by Cheapflights users on 4/24. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
pe 5/154:19 pm
STL
- LAS
1 stop30h 28m
Frontier
Deal found 4/24![Frontier logo]()
$86
This CheapOair deal was found by Cheapflights users on 4/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ma 5/189:18 pm
STL
- SAN
1 stop25h 46m
Frontier
Deal found 4/27![Frontier logo]()
$86
This Super.com deal was found by Cheapflights users on 4/25. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti 6/237:46 pm
STL
- LAS
Nonstop3h 34m
Frontier
Deal found 4/25![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
ti 6/238:08 pm
STL
- SAN
1 stop15h 01m
Frontier
Deal found 4/28![Frontier logo]()
$88
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 huhtikuu 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $167 (Booking.com) |
One-way from | $63 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $418 |
Good round-trip deal | $434 or less |
Good one-way deal | $248 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 huhtikuu 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. LouisSacramento
STL - SMF
STLSMF
Lambert-St Louis
ti 5/12
5:51 am-10:48 am
1 stop6h 57m
Sacramento Intl
la 5/16
12:34 am-11:47 am
1 stop9h 13m
$263
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
la 6/20
2:56 pm-7:51 pm
1 stop6h 55m
Ontario
ti 6/23
6:00 am-7:23 pm
1 stop11h 23m
$270
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
ma 6/15
2:56 pm-7:51 pm
1 stop6h 55m
Ontario
ti 6/23
6:00 am-7:23 pm
1 stop11h 23m
$270
St. LouisSan Diego
STL - SAN
STLSAN
Lambert-St Louis
ke 5/20
7:59 pm-11:43 pm
1 stop5h 44m
San Diego
pe 5/29
3:30 pm-11:21 pm
1 stop5h 51m
$297
St. LouisSan Diego
STL - SAN
STLSAN
Lambert-St Louis
pe 5/22
7:59 pm-11:43 pm
1 stop5h 44m
San Diego
ma 5/25
6:30 am-2:31 pm
1 stop6h 01m
$297
St. LouisSan Diego
STL - SAN
STLSAN
Lambert-St Louis
ke 5/20
7:59 pm-11:43 pm
1 stop5h 44m
San Diego
ke 5/27
6:30 am-4:46 pm
1 stop8h 16m
$297
St. LouisSan Diego
STL - SAN
STLSAN
Lambert-St Louis
la 5/23
5:20 pm-9:45 pm
1 stop6h 25m
San Diego
ke 5/27
7:05 am-12:35 pm
Nonstop3h 30m
$315
Quickest round-trip
St. LouisSan Diego
STL - SAN
STLSAN
Lambert-St Louis
ke 5/27
8:25 am-10:25 am
Nonstop4h 00m
San Diego
la 5/30
7:35 am-1:05 pm
Nonstop3h 30m
$324
St. LouisOntario
STL - ONT
STLONT
Lambert-St Louis
ma 7/6
2:52 pm-3:07 pm
1 stop26h 15m
Ontario
ti 7/14
1:28 pm-6:05 pm
1 stop26h 37m
$325
St. LouisSacramento
STL - SMF
STLSMF
Lambert-St Louis
ti 5/12
5:30 am-11:30 am
2 stops8h 00m
Sacramento Intl
su 5/17
11:55 pm-9:05 am
1 stop7h 10m
$349
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-SAN
STL-SNA
STL-LAS
STL-ONT
STL-SFO
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-SAN
STL-SNA
STL-LAS
STL-ONT
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 57 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 month to book a flight from St. Louis to California?
Currently, December is the cheapest month in which you can book a flight from St. Louis to California (average of $95). Flying from St. Louis to California in October is currently the most expensive (average of $969). 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 huhtikuu 28, 2026.
It’s optimal to fly from St. Louis to California in the afternoon. By choosing this option you can save up to 12% on the cost of your flight, compared to a flight in the evening.
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 at noon 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.
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 huhtikuu 28, 2026.
The most flights from STL to USCA are scheduled on a Monday (9 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from St. Louis to California?
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 huhtikuu 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.
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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.
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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 huhtikuu 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 8 airlines flying from St. Louis to California
Discover the top 8 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 huhtikuu 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$88 | Average$241 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$118 | Average$376 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$172 | Average$173 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$180 | Average$402 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$182 | Average$438 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$256 | Average$469 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$304 | Average$372 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$347 | Average$550 | FlexibilityNo cancel fee | On-time75% |