$157+ Cheap flights from St. Louis (STL) to Irvine, CA
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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
Apr 17 — Apr 241
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Irvine 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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Lambert-St Louis to Irvine are usually found in September or October, booked 61 days in advance, depart on a Thursday or Wednesday and return on a Wednesday
Cheap flight deals from St. Louis to Irvine
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to IrvineExplore the most affordable flight options available from St. Louis to Irvine. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 18, 2026.
Explore the most affordable flight options available from St. Louis to Irvine. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/14. 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.
Sat 4/118:16 pm
STL
- LAX
1 stop29h 56m
Frontier
Sat 4/186:15 am
LAX
- STL
1 stop11h 17m
Frontier
Deal found 3/14![Frontier logo]()
$277
This Frontier deal was found by Cheapflights users on 3/14. 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.
Fri 5/88:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Sun 5/246:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 3/14![Frontier logo]()
$279
This Frontier deal was found by Cheapflights users on 3/13. 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.
Thu 4/210:12 pm
STL
- LAX
1 stop11h 09m
Frontier
Mon 4/610:00 pm
LAX
- STL
1 stop10h 30m
Frontier
Deal found 3/13![Frontier logo]()
$280
This Frontier deal was found by Cheapflights users on 3/15. 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.
Wed 3/258:12 pm
STL
- LAX
1 stop6h 04m
Frontier
Sat 4/410:00 pm
LAX
- STL
1 stop10h 30m
Frontier
Deal found 3/15![Frontier logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 3/14. 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.
Sat 4/111:06 pm
STL
- LAX
1 stop8h 29m
Frontier
Thu 4/1610:53 pm
LAX
- STL
2 stops42h 39m
Frontier
Deal found 3/14![Frontier logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 3/3112:14 pm
STL
- LAX
1 stop7h 16m
Frontier
Sun 4/58:58 pm
LAX
- STL
1 stop10h 50m
Frontier
Deal found 3/15![Frontier logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 5/1412:16 pm
STL
- LAX
1 stop22h 47m
Frontier
Sun 5/178:59 pm
LAX
- STL
2 stops21h 24m
Frontier
Deal found 3/13![Frontier logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 3/298:06 pm
STL
- LAX
1 stop14h 14m
Frontier
Tue 3/316:30 pm
LAX
- STL
2 stops13h 18m
Frontier
Deal found 3/15![Frontier logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 3/2412:14 pm
STL
- LAX
1 stop7h 16m
Frontier
Tue 3/316:30 pm
LAX
- STL
2 stops13h 18m
Frontier
Deal found 3/15![Frontier logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 3/258:12 pm
STL
- LAX
1 stop6h 04m
Frontier
Sun 4/58:35 pm
LAX
- STL
2 stops11h 13m
Frontier
Deal found 3/15![Frontier logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 4/38:16 pm
STL
- LAX
1 stop29h 56m
Frontier
Mon 4/610:53 pm
LAX
- STL
2 stops32h 55m
Frontier
Deal found 3/13![Frontier logo]()
$289
Best flights from St. Louis to IrvineDiscover carefully curated flight deals from St. Louis to Irvine that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 18, 2026.
Discover carefully curated flight deals from St. Louis to Irvine that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 18, 2026.
This Southwest deal was found by Cheapflights users on 3/17. 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 5/49:40 pm
STL
- LAX
Nonstop4h 05m
Southwest
Sat 5/97:35 am
LAX
- STL
Nonstop3h 30m
Southwest
Deal found 3/17![Southwest logo]()
$388
This Southwest deal was found by Cheapflights users on 3/15. 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 4/183:00 pm
STL
- LAX
Nonstop4h 05m
Southwest
Mon 4/2011:55 pm
LAX
- STL
1 stop7h 35m
Southwest
Deal found 3/15![Southwest logo]()
$398
This Southwest deal was found by Cheapflights users on 3/17. 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 5/49:40 pm
STL
- LAX
Nonstop4h 05m
Southwest
Fri 5/85:00 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 3/17![Southwest logo]()
$403
This Southwest deal was found by Cheapflights users on 3/14. 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.
Fri 6/59:55 pm
STL
- LAX
Nonstop3h 50m
Southwest
Mon 6/86:20 pm
LAX
- STL
1 stop5h 35m
Southwest
Deal found 3/14![Southwest logo]()
$413
This Southwest deal was found by Cheapflights users on 3/16. 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 5/23:00 pm
STL
- LAX
Nonstop4h 05m
Southwest
Sat 5/97:35 am
LAX
- STL
Nonstop3h 30m
Southwest
Deal found 3/16![Southwest logo]()
$413
This Southwest deal was found by Cheapflights users on 3/17. 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 8/202:20 pm
STL
- LAX
2 stops7h 00m
Southwest
Mon 8/2411:15 pm
LAX
- STL
1 stop6h 30m
Southwest
Deal found 3/17![Southwest logo]()
$428
This Southwest deal was found by Cheapflights users on 3/13. 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.
Tue 8/49:00 pm
STL
- LAX
Nonstop3h 55m
Southwest
Fri 8/77:10 pm
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 3/13![Southwest logo]()
$428
This Southwest deal was found by Cheapflights users on 3/15. 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.
Sun 6/285:40 am
STL
- LAX
2 stops7h 25m
Southwest
Mon 7/66:20 pm
LAX
- STL
1 stop5h 35m
Southwest
Deal found 3/15![Southwest logo]()
$428
This Southwest deal was found by Cheapflights users on 3/14. 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 8/15:40 am
STL
- LAX
2 stops7h 35m
Southwest
Sat 8/295:50 am
LAX
- STL
2 stops7h 35m
Southwest
Deal found 3/14![Southwest logo]()
$458
This Southwest deal was found by Cheapflights users on 3/16. 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.
Tue 4/288:25 am
STL
- LAX
Nonstop4h 05m
Southwest
Fri 5/15:00 pm
LAX
- STL
1 stop5h 15m
Southwest
Deal found 3/16![Southwest logo]()
$479
This Southwest deal was found by Cheapflights users on 3/13. 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 4/18:25 am
STL
- LAX
1 stop6h 15m
Southwest
Thu 4/25:20 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 3/13![Southwest logo]()
$481
Last-minute flights from St. Louis to IrvineDiscover last-minute flight deals from St. Louis to Irvine. Data last updated March 18, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Irvine. Data last updated March 18, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 3/2412:14 pm
STL
- LAX
1 stop7h 16m
Frontier
Tue 3/316:30 pm
LAX
- STL
2 stops13h 18m
Frontier
Deal found 3/15![Frontier logo]()
$287
This Frontier deal was found by Cheapflights users on 3/15. 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.
Wed 3/258:12 pm
STL
- LAX
1 stop6h 04m
Frontier
Sat 4/410:00 pm
LAX
- STL
1 stop10h 30m
Frontier
Deal found 3/15![Frontier logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 3/258:12 pm
STL
- LAX
1 stop6h 04m
Frontier
Sun 4/58:35 pm
LAX
- STL
2 stops11h 13m
Frontier
Deal found 3/15![Frontier logo]()
$288
This Frontier deal was found by Cheapflights users on 3/15. 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.
Fri 3/278:12 pm
STL
- LAX
1 stop6h 04m
Frontier
Mon 4/610:00 pm
LAX
- STL
1 stop10h 30m
Frontier
Deal found 3/15![Frontier logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 3/298:06 pm
STL
- LAX
1 stop14h 14m
Frontier
Tue 3/316:30 pm
LAX
- STL
2 stops13h 18m
Frontier
Deal found 3/15![Frontier logo]()
$286
This Priceline deal was found by Cheapflights users on 3/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/308:12 pm
STL
- LAX
1 stop6h 04m
Frontier
Sat 4/410:00 pm
LAX
- STL
1 stop10h 30m
Frontier
Deal found 3/15![Frontier logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 3/3112:14 pm
STL
- LAX
1 stop7h 16m
Frontier
Sun 4/58:58 pm
LAX
- STL
1 stop10h 50m
Frontier
Deal found 3/15![Frontier logo]()
$284
This Frontier deal was found by Cheapflights users on 3/13. 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.
Thu 4/210:12 pm
STL
- LAX
1 stop11h 09m
Frontier
Mon 4/610:00 pm
LAX
- STL
1 stop10h 30m
Frontier
Deal found 3/13![Frontier logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 4/38:16 pm
STL
- LAX
1 stop29h 56m
Frontier
Mon 4/610:53 pm
LAX
- STL
2 stops32h 55m
Frontier
Deal found 3/13![Frontier logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 4/88:16 pm
STL
- LAX
1 stop5h 56m
Frontier
Thu 4/162:44 pm
LAX
- STL
2 stops15h 10m
Frontier
Deal found 3/16![Frontier logo]()
$291
This Kiwi.com deal was found by Cheapflights users on 3/14. 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.
Sat 4/118:16 pm
STL
- LAX
1 stop29h 56m
Frontier
Sat 4/186:15 am
LAX
- STL
1 stop11h 17m
Frontier
Deal found 3/14![Frontier logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 3/14. 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.
Sat 4/111:06 pm
STL
- LAX
1 stop8h 29m
Frontier
Thu 4/1610:53 pm
LAX
- STL
2 stops42h 39m
Frontier
Deal found 3/14![Frontier logo]()
$283
One-way flights from St. Louis to IrvineSearch for one-way flight options from St. Louis to Irvine. Find affordable one-way fares based on user searches. Data last updated March 18, 2026.
Search for one-way flight options from St. Louis to Irvine. Find affordable one-way fares based on user searches. Data last updated March 18, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 4/158:23 pm
STL
- LAX
2 stops29h 48m
Frontier
Deal found 3/13![Frontier logo]()
$157
This Super.com deal was found by Cheapflights users on 3/15. 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.
Sat 3/2812:14 pm
STL
- LAX
1 stop6h 58m
Frontier
Deal found 3/15![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 3/16. 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.
Sat 4/48:16 pm
STL
- LAX
2 stops37h 05m
Frontier
Deal found 3/16![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 3/15. 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.
Sat 4/118:16 pm
STL
- LAX
2 stops37h 05m
Frontier
Deal found 3/15![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 5/146:55 pm
STL
- LAX
2 stops40h 08m
Frontier
Deal found 3/13![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 3/17. 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 4/2311:25 am
STL
- LAX
2 stops14h 59m
Frontier
Deal found 3/17![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 3/14. 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 5/73:33 pm
STL
- LAX
2 stops19h 30m
Frontier
Deal found 3/14![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 4/108:16 pm
STL
- LAX
2 stops15h 49m
Frontier
Deal found 3/13![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 4/169:55 pm
STL
- LAX
2 stops11h 46m
Frontier
Deal found 3/16![Frontier logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 3/16. 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 5/135:27 pm
STL
- LAX
2 stops26h 48m
Frontier
Deal found 3/16![Frontier logo]()
$170
Find flight deals from St. Louis to Irvine
Keep the following information in mind while searching for St. Louis to Irvine flight deals. Data was last updated March 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $277 (Kiwi.com) |
One-way from | $157 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $438 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Irvine 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 March 18, 2026.
Use the filters below to find and compare flights from St. Louis to Irvine that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Mon 5/4
9:40 pm-11:45 pm
Nonstop4h 05m
Los Angeles Los Angeles
Sat 5/9
7:35 am-1:05 pm
Nonstop3h 30m
$388
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sat 4/18
3:00 pm-5:05 pm
Nonstop4h 05m
Los Angeles Los Angeles
Mon 4/20
11:55 pm-9:30 am
1 stop7h 35m
$398
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Mon 5/4
9:40 pm-11:45 pm
Nonstop4h 05m
Los Angeles Los Angeles
Fri 5/8
5:00 am-10:35 am
Nonstop3h 35m
$403
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 6/5
9:55 pm-11:45 pm
Nonstop3h 50m
Los Angeles Los Angeles
Mon 6/8
6:20 pm-1:55 am
1 stop5h 35m
$413
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sat 5/2
3:00 pm-5:05 pm
Nonstop4h 05m
Los Angeles Los Angeles
Sat 5/9
7:35 am-1:05 pm
Nonstop3h 30m
$413
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 8/20
2:20 pm-7:20 pm
2 stops7h 00m
Los Angeles Los Angeles
Mon 8/24
11:15 pm-7:45 am
1 stop6h 30m
$428
Quickest round-trip
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Tue 8/4
9:00 pm-10:55 pm
Nonstop3h 55m
Los Angeles Los Angeles
Fri 8/7
7:10 pm-12:45 am
Nonstop3h 35m
$428
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sun 6/28
5:40 am-11:05 am
2 stops7h 25m
Los Angeles Los Angeles
Mon 7/6
6:20 pm-1:55 am
1 stop5h 35m
$428
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sat 8/1
5:40 am-11:15 am
2 stops7h 35m
Los Angeles Los Angeles
Sat 8/29
5:50 am-3:25 pm
2 stops7h 35m
$458
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Tue 4/28
8:25 am-10:30 am
Nonstop4h 05m
Los Angeles Los Angeles
Fri 5/1
5:00 pm-12:15 am
1 stop5h 15m
$479
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Irvine
Have a flexible travel schedule? Discover the best time to fly to Irvine from St. Louis with our price prediction graph.
STL-LAX
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 Irvine
STL-IR9
STL-LAX
How far ahead should I book a flight from St. Louis to Irvine?
Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Irvine. Price data was last updated on March 13, 2026.
To ensure you get the cheapest price possible for a flight from St. Louis to Irvine, you should look to book at least 61 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from St. Louis to Irvine?
Currently, November is the cheapest month in which you can book a flight from St. Louis to Irvine (average of $67). Flying from St. Louis to Irvine in June is currently the most expensive (average of $250). 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 IR9?
Find hourly flight availability from St. Louis to Irvine. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 18, 2026.
Unlike in the morning, when flights are generally more expensive, you can save up to 16% on flights from St. Louis to Irvine by exploring options for tickets in the evening.
What is the cheapest day to fly from St. Louis to Irvine?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to Irvine. Price data was last updated on February 17, 2026.
Travelers seeking maximum savings on their St. Louis to Irvine flight should consider departing on Thursday afternoons 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 Irvine
Explore weekly flight availability from St. Louis to Irvine. 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 March 18, 2026.
The most flights from STL to IR9 are scheduled on a Monday (10 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).
Reviews of airlines servicing Irvine
Get insights into the airlines that provide service to Irvine. 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 Irvine. Reviews last updated March 18, 2026.
Read through reviews of airlines operating flights from St. Louis to Irvine, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Overall
8.0
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Entertainment
7.5
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Irvine. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for St. Louis to Irvine
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Irvine by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from St. Louis to Irvine by cabin class
Find flights from St. Louis to Irvine, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Irvine flights
Browse other St. Louis and Irvine flight options. Last updated on March 18, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on March 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
St. Louis to Irvine flights
Consider these flights traveling from St. Louis to Irvine.
Top 8 airlines flying from St. Louis to Irvine
Discover the top 8 airlines that operate flights from St. Louis to Irvine. 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 March 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$126 | Average$208 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$172 | Average$173 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$228 | Average$376 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$256 | Average$401 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$262 | Average$429 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$273 | Average$444 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$304 | Average$372 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$347 | Average$531 | FlexibilityNo cancel fee | On-time75% |