$134+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
Jun 4 — Jun 111
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 58 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 May 5, 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 May 5, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 5/298:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Mon 6/88:59 pm
LAX
- STL
2 stops18h 31m
Frontier
Deal found 5/5![Frontier logo]()
$269
This Frontier deal was found by Cheapflights users on 5/5. 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 5/298:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Sun 6/76:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 5/5![Frontier logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 5/238:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Wed 6/106:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 5/5![Frontier logo]()
$271
This Trip.com deal was found by Cheapflights users on 5/5. 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.
Fri 6/127:03 pm
STL
- LAX
1 stop6h 24m
Frontier
Sun 6/148:56 pm
LAX
- STL
1 stop19h 57m
Frontier
Deal found 5/5![Frontier logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 5/206:51 pm
STL
- LAX
1 stop16h 12m
Frontier
Mon 5/258:59 pm
LAX
- STL
2 stops15h 49m
Frontier
Deal found 5/1![Frontier logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 5/299:06 pm
STL
- LAX
1 stop13h 57m
Frontier
Wed 6/38:27 pm
LAX
- STL
2 stops20h 56m
Frontier
Deal found 5/4![Frontier logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 9/18:08 pm
STL
- LAX
2 stops17h 21m
Frontier
Mon 9/78:56 pm
LAX
- STL
1 stop20h 27m
Frontier
Deal found 5/4![Frontier logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/96:03 pm
STL
- LAX
1 stop17h 22m
Frontier
Tue 6/162:00 pm
LAX
- STL
2 stops27h 23m
Frontier
Deal found 5/4![Frontier logo]()
$276
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 5/219:06 pm
STL
- LAX
1 stop13h 57m
Frontier
Sat 5/238:59 pm
LAX
- STL
1 stop20h 24m
Frontier
Deal found 5/1![Frontier logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 6/127:03 pm
STL
- LAX
1 stop6h 24m
Frontier
Mon 6/152:00 pm
LAX
- STL
2 stops50h 18m
Frontier
Deal found 5/2![Frontier logo]()
$278
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 6/15:27 pm
STL
- LAX
2 stops41h 28m
Frontier
Thu 6/46:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 4/30![Frontier logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 5/229:06 pm
STL
- LAX
1 stop13h 57m
Frontier
Sat 5/308:59 pm
LAX
- STL
2 stops45h 12m
Frontier
Deal found 4/30![Frontier logo]()
$280
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 May 5, 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 May 5, 2026.
This Southwest deal was found by Cheapflights users on 5/4. 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 7/79:20 pm
STL
- LAX
Nonstop3h 50m
Southwest
Wed 7/225:00 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 5/4![Southwest logo]()
$377
This Southwest deal was found by Cheapflights users on 5/1. 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 6/36:35 am
STL
- LAX
2 stops8h 45m
Southwest
Wed 6/108:10 am
LAX
- STL
2 stops7h 35m
Southwest
Deal found 5/1![Southwest logo]()
$387
This Southwest deal was found by Cheapflights users on 5/4. 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 6/127:15 pm
STL
- LAX
1 stop7h 35m
Southwest
Tue 6/165:00 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 5/4![Southwest logo]()
$410
This Southwest deal was found by Cheapflights users on 5/2. 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 8/129:00 pm
STL
- LAX
Nonstop3h 55m
Southwest
Sun 8/166:45 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 5/2![Southwest logo]()
$411
This Southwest deal was found by Cheapflights users on 5/2. 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 5/303:00 pm
STL
- LAX
Nonstop4h 05m
Southwest
Sat 6/65:00 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 5/2![Southwest logo]()
$433
This Southwest deal was found by Cheapflights users on 5/4. 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 8/2511:55 am
STL
- LAX
2 stops7h 50m
Southwest
Sun 8/301:20 pm
LAX
- STL
2 stops7h 40m
Southwest
Deal found 5/4![Southwest logo]()
$441
This Southwest deal was found by Cheapflights users on 5/3. 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 10/26:30 am
STL
- LAX
2 stops7h 25m
Southwest
Wed 10/72:45 pm
LAX
- STL
1 stop7h 00m
Southwest
Deal found 5/3![Southwest logo]()
$443
This Southwest deal was found by Cheapflights users on 5/4. 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 7/118:45 pm
STL
- LAX
Nonstop3h 55m
Southwest
Sat 7/185:00 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 5/4![Southwest logo]()
$454
This Southwest deal was found by Cheapflights users on 5/2. 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 6/108:25 am
STL
- LAX
Nonstop3h 55m
Southwest
Mon 6/156:35 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 5/2![Southwest logo]()
$470
This Southwest deal was found by Cheapflights users on 5/2. 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 7/272:15 pm
STL
- LAX
2 stops7h 30m
Southwest
Thu 7/301:05 pm
LAX
- STL
2 stops7h 35m
Southwest
Deal found 5/2![Southwest logo]()
$473
This Southwest deal was found by Cheapflights users on 5/4. 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 6/129:55 pm
STL
- LAX
Nonstop3h 50m
Southwest
Mon 6/156:35 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 5/4![Southwest logo]()
$490
Last-minute flights from St. Louis to IrvineDiscover last-minute flight deals from St. Louis to Irvine. Data last updated May 5, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Irvine. Data last updated May 5, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 5/206:51 pm
STL
- LAX
1 stop16h 12m
Frontier
Mon 5/258:59 pm
LAX
- STL
2 stops15h 49m
Frontier
Deal found 5/1![Frontier logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 5/219:06 pm
STL
- LAX
1 stop13h 57m
Frontier
Sat 5/238:59 pm
LAX
- STL
1 stop20h 24m
Frontier
Deal found 5/1![Frontier logo]()
$277
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 5/229:06 pm
STL
- LAX
1 stop13h 57m
Frontier
Sat 5/308:59 pm
LAX
- STL
2 stops45h 12m
Frontier
Deal found 4/30![Frontier logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 5/238:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Wed 6/106:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 5/5![Frontier logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 5/1. 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 5/289:21 pm
STL
- LAX
1 stop13h 42m
Frontier
Fri 6/58:59 pm
LAX
- STL
2 stops14h 56m
Frontier
Deal found 5/1![Frontier logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 5/298:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Mon 6/88:59 pm
LAX
- STL
2 stops18h 31m
Frontier
Deal found 5/5![Frontier logo]()
$269
This Frontier deal was found by Cheapflights users on 5/5. 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 5/298:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Sun 6/76:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 5/5![Frontier logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 5/299:06 pm
STL
- LAX
1 stop13h 57m
Frontier
Wed 6/38:27 pm
LAX
- STL
2 stops20h 56m
Frontier
Deal found 5/4![Frontier logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 6/15:27 pm
STL
- LAX
2 stops41h 28m
Frontier
Thu 6/46:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 4/30![Frontier logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 6/96:03 pm
STL
- LAX
1 stop17h 22m
Frontier
Tue 6/162:00 pm
LAX
- STL
2 stops27h 23m
Frontier
Deal found 5/4![Frontier logo]()
$276
This Trip.com deal was found by Cheapflights users on 5/5. 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.
Fri 6/127:03 pm
STL
- LAX
1 stop6h 24m
Frontier
Sun 6/148:56 pm
LAX
- STL
1 stop19h 57m
Frontier
Deal found 5/5![Frontier logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 6/127:03 pm
STL
- LAX
1 stop6h 24m
Frontier
Mon 6/152:00 pm
LAX
- STL
2 stops50h 18m
Frontier
Deal found 5/2![Frontier logo]()
$278
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 May 5, 2026.
Search for one-way flight options from St. Louis to Irvine. Find affordable one-way fares based on user searches. Data last updated May 5, 2026.
This Super.com deal was found by Cheapflights users on 5/4. 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.
Tue 5/126:51 pm
STL
- LAX
1 stop16h 12m
Frontier
Deal found 5/4![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 5/5. 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 6/282:56 pm
STL
- LAX
1 stop20h 29m
Frontier
Deal found 5/5![Frontier logo]()
$138
This Super.com deal was found by Cheapflights users on 5/4. 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.
Fri 5/229:06 pm
STL
- LAX
1 stop13h 57m
Frontier
Deal found 5/4![Frontier logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 6/28:08 pm
STL
- LAX
2 stops27h 02m
Frontier
Deal found 4/30![Frontier logo]()
$140
This CheapOair deal was found by Cheapflights users on 5/2. 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.
Thu 5/219:06 pm
STL
- LAX
1 stop24h 26m
Frontier
Deal found 5/2![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 5/4. 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 5/196:51 pm
STL
- LAX
1 stop16h 12m
Frontier
Deal found 5/4![Frontier logo]()
$144
This Frontier deal was found by Cheapflights users on 5/1. 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 5/248:08 pm
STL
- LAX
1 stop6h 08m
Frontier
Deal found 5/1![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 6/38:08 pm
STL
- LAX
2 stops14h 55m
Frontier
Deal found 4/30![Frontier logo]()
$148
This Super.com deal was found by Cheapflights users on 5/3. 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.
Sun 6/142:56 pm
STL
- LAX
1 stop26h 11m
Frontier
Deal found 5/3![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 5/2. 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 5/299:06 pm
STL
- LAX
2 stops27h 20m
Frontier
Deal found 5/2![Frontier logo]()
$150
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 May 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $269 (Kiwi.com) |
One-way from | $134 (Super.com) |
Popular in | March |
Cheapest in | September |
Average price | $422 |
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 May 5, 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
Tue 7/7
9:20 pm-11:10 pm
Nonstop3h 50m
Los Angeles
Wed 7/22
5:00 am-10:40 am
Nonstop3h 40m
$377
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Wed 6/3
6:35 am-1:20 pm
2 stops8h 45m
Los Angeles
Wed 6/10
8:10 am-5:45 pm
2 stops7h 35m
$387
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 6/12
7:15 pm-12:50 am
1 stop7h 35m
Los Angeles
Tue 6/16
5:00 am-10:40 am
Nonstop3h 40m
$410
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Wed 8/12
9:00 pm-10:55 pm
Nonstop3h 55m
Los Angeles
Sun 8/16
6:45 am-12:20 pm
Nonstop3h 35m
$411
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sat 5/30
3:00 pm-5:05 pm
Nonstop4h 05m
Los Angeles
Sat 6/6
5:00 am-10:40 am
Nonstop3h 40m
$433
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Tue 8/25
11:55 am-5:45 pm
2 stops7h 50m
Los Angeles
Sun 8/30
1:20 pm-11:00 pm
2 stops7h 40m
$441
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 10/2
6:30 am-11:55 am
2 stops7h 25m
Los Angeles
Wed 10/7
2:45 pm-11:45 pm
1 stop7h 00m
$443
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sat 7/11
8:45 pm-10:40 pm
Nonstop3h 55m
Los Angeles
Sat 7/18
5:00 am-10:40 am
Nonstop3h 40m
$454
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Wed 6/10
8:25 am-10:20 am
Nonstop3h 55m
Los Angeles
Mon 6/15
6:35 am-12:10 pm
Nonstop3h 35m
$470
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Mon 7/27
2:15 pm-7:45 pm
2 stops7h 30m
Los Angeles
Thu 7/30
1:05 pm-10:40 pm
2 stops7h 35m
$473
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
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 May 5, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 12% 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 May 5, 2026.
The most flights from STL to IR9 are scheduled on a Sunday (10 on average). You will have fewer flight options on Tuesday, 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 Irvine?
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 May 5, 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.
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Boarding
8.1
Entertainment
7.5
Comfort
8.0
Crew
8.6
Overall
7.9
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 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
Toggle through the tabs below to find thousands of 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 May 5, 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 May 5, 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 May 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$128 | Average$238 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$172 | Average$173 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$228 | Average$378 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$256 | Average$456 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$273 | Average$440 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$276 | Average$404 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$304 | Average$384 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$347 | Average$550 | FlexibilityNo cancel fee | On-time75% |