$145+ 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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
Jul 20 — Jul 271
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 June 20, 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 June 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Fri 7/317:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Sun 8/29:09 pm
LAX
- STL
1 stop19h 06m
Frontier
Deal found 6/15![Frontier logo]()
$280
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Thu 7/167:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Fri 7/246:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/15![Frontier logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Fri 7/178:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Wed 7/296:30 am
LAX
- STL
1 stop9h 35m
Frontier
Deal found 6/15![Frontier logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 7/88:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Tue 7/141:56 pm
LAX
- STL
2 stops26h 09m
Frontier
Deal found 6/15![Frontier logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Fri 7/178:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Tue 7/286:30 am
LAX
- STL
1 stop9h 35m
Frontier
Deal found 6/15![Frontier logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Thu 8/137:10 pm
STL
- LAX
1 stop16h 20m
Frontier
Mon 8/178:49 pm
LAX
- STL
2 stops18h 41m
Frontier
Deal found 6/15![Frontier logo]()
$288
This Frontier deal was found by Cheapflights users on 6/15. 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.
Tue 7/218:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Wed 7/299:50 am
LAX
- STL
1 stop7h 33m
Frontier
Deal found 6/15![Frontier logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 7/197:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Fri 7/246:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/15![Frontier logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
Fri 8/77:10 pm
STL
- LAX
1 stop16h 20m
Frontier
Mon 8/106:45 pm
LAX
- STL
2 stops20h 52m
Frontier
Deal found 6/14![Frontier logo]()
$292
This Kiwi.com deal was found by Cheapflights users on 6/17. 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.
Mon 7/207:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Mon 7/279:09 pm
LAX
- STL
2 stops20h 14m
Frontier
Deal found 6/17![Frontier logo]()
$293
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 June 20, 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 June 20, 2026.
This Southwest deal was found by Cheapflights users on 6/19. 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 8/298:30 am
STL
- LAX
Nonstop3h 55m
Southwest
Wed 9/912:25 pm
LAX
- STL
1 stop6h 45m
Southwest
Deal found 6/19![Southwest logo]()
$389
This American Airlines deal was found by Cheapflights users on 6/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:37 am
STL
- LAX
Nonstop4h 09m
American Airlines
Sat 8/11:10 am
LAX
- STL
1 stop5h 36m
American Airlines
Deal found 6/14![American Airlines logo]()
$512
This Southwest deal was found by Cheapflights users on 6/14. 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.
Tue 8/48:25 am
STL
- LAX
Nonstop3h 55m
Southwest
Fri 8/77:10 pm
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 6/14![Southwest logo]()
$418
This Southwest deal was found by Cheapflights users on 6/15. 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.
Fri 8/149:05 pm
STL
- LAX
Nonstop3h 55m
Southwest
Thu 8/2012:15 pm
LAX
- STL
1 stop7h 35m
Southwest
Deal found 6/15![Southwest logo]()
$450
This Southwest deal was found by Cheapflights users on 6/15. 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.
Fri 7/316:30 pm
STL
- LAX
1 stop7h 25m
Southwest
Sun 8/25:30 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 6/15![Southwest logo]()
$453
This Southwest deal was found by Cheapflights users on 6/18. 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 7/156:20 pm
STL
- LAX
1 stop6h 35m
Southwest
Mon 7/201:05 pm
LAX
- STL
2 stops7h 40m
Southwest
Deal found 6/18![Southwest logo]()
$455
This Southwest deal was found by Cheapflights users on 6/17. 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.
Sat 7/42:15 pm
STL
- LAX
Nonstop3h 50m
Southwest
Sun 7/55:30 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 6/17![Southwest logo]()
$470
This Southwest deal was found by Cheapflights users on 6/19. 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 7/89:20 pm
STL
- LAX
Nonstop3h 55m
Southwest
Sat 7/185:05 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 6/19![Southwest logo]()
$473
This Southwest deal was found by Cheapflights users on 6/18. 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 7/139:55 pm
STL
- LAX
Nonstop3h 55m
Southwest
Tue 7/1412:50 pm
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 6/18![Southwest logo]()
$473
This Southwest deal was found by Cheapflights users on 6/18. 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 7/169:55 pm
STL
- LAX
Nonstop3h 55m
Southwest
Mon 7/206:35 am
LAX
- STL
Nonstop3h 35m
Southwest
Deal found 6/18![Southwest logo]()
$486
This Southwest deal was found by Cheapflights users on 6/17. 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 7/169:55 pm
STL
- LAX
Nonstop3h 55m
Southwest
Sun 7/195:30 am
LAX
- STL
Nonstop3h 40m
Southwest
Deal found 6/17![Southwest logo]()
$533
Last-minute flights from St. Louis to IrvineDiscover last-minute flight deals from St. Louis to Irvine. Data last updated June 20, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Irvine. Data last updated June 20, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/17. 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.
Fri 7/37:03 pm
STL
- LAX
2 stops16h 22m
Frontier
Wed 7/86:30 am
LAX
- STL
1 stop9h 35m
Frontier
Deal found 6/17![Frontier logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 7/88:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Tue 7/141:56 pm
LAX
- STL
2 stops26h 09m
Frontier
Deal found 6/15![Frontier logo]()
$285
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Thu 7/167:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Fri 7/246:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/15![Frontier logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Fri 7/178:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Wed 7/296:30 am
LAX
- STL
1 stop9h 35m
Frontier
Deal found 6/15![Frontier logo]()
$283
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Fri 7/178:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Tue 7/286:30 am
LAX
- STL
1 stop9h 35m
Frontier
Deal found 6/15![Frontier logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 7/197:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Fri 7/246:30 am
LAX
- STL
1 stop9h 45m
Frontier
Deal found 6/15![Frontier logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 6/17. 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.
Mon 7/207:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Mon 7/279:09 pm
LAX
- STL
2 stops20h 14m
Frontier
Deal found 6/17![Frontier logo]()
$293
This Frontier deal was found by Cheapflights users on 6/15. 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.
Tue 7/218:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Wed 7/299:50 am
LAX
- STL
1 stop7h 33m
Frontier
Deal found 6/15![Frontier logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 7/217:03 pm
STL
- LAX
1 stop16h 22m
Frontier
Sat 7/256:30 am
LAX
- STL
1 stop10h 53m
Frontier
Deal found 6/15![Frontier logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Fri 7/317:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Sun 8/29:09 pm
LAX
- STL
1 stop19h 06m
Frontier
Deal found 6/15![Frontier logo]()
$280
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 June 20, 2026.
Search for one-way flight options from St. Louis to Irvine. Find affordable one-way fares based on user searches. Data last updated June 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/15. 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.
Mon 7/207:10 pm
STL
- LAX
2 stops28h 49m
Frontier
Deal found 6/15![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 8/43:41 pm
STL
- LAX
2 stops23h 20m
Frontier
Deal found 6/15![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 6/15. 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 7/78:08 pm
STL
- LAX
1 stop30h 03m
Frontier
Deal found 6/15![Frontier logo]()
$148
This Frontier deal was found by Cheapflights users on 6/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:46 pm
STL
- LAX
1 stop7h 13m
Frontier
Deal found 6/16![Frontier logo]()
$149
This Priceline deal was found by Cheapflights users on 6/16. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1112:46 pm
STL
- LAX
1 stop7h 13m
Frontier
Deal found 6/16![Frontier logo]()
$152
This Super.com deal was found by Cheapflights users on 6/15. 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.
Wed 7/228:08 pm
STL
- LAX
1 stop6h 03m
Frontier
Deal found 6/15![Frontier logo]()
$154
This Trip.com deal was found by Cheapflights users on 6/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/107:10 pm
STL
- LAX
1 stop16h 15m
Frontier
Deal found 6/16![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 6/16. 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 7/47:19 pm
STL
- LAX
1 stop6h 21m
Frontier
Deal found 6/16![Frontier logo]()
$160
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 June 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $280 (Kiwi.com) |
One-way from | $145 (Kiwi.com) |
Popular in | May |
Cheapest in | September |
Average price | $440 |
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 June 20, 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
Sat 8/29
8:30 am-10:25 am
Nonstop3h 55m
Los Angeles
Wed 9/9
12:25 pm-9:10 pm
1 stop6h 45m
$389
Quickest round-trip
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Tue 8/4
8:25 am-10:20 am
Nonstop3h 55m
Los Angeles
Fri 8/7
7:10 pm-12:45 am
Nonstop3h 35m
$418
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 8/14
9:05 pm-11:00 pm
Nonstop3h 55m
Los Angeles
Thu 8/20
12:15 pm-9:50 pm
1 stop7h 35m
$450
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Fri 7/31
6:30 pm-11:55 pm
1 stop7h 25m
Los Angeles
Sun 8/2
5:30 am-11:10 am
Nonstop3h 40m
$453
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Wed 7/15
6:20 pm-10:55 pm
1 stop6h 35m
Los Angeles
Mon 7/20
1:05 pm-10:45 pm
2 stops7h 40m
$455
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Sat 7/4
2:15 pm-4:05 pm
Nonstop3h 50m
Los Angeles
Sun 7/5
5:30 am-11:10 am
Nonstop3h 40m
$470
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Wed 7/8
9:20 pm-11:15 pm
Nonstop3h 55m
Los Angeles
Sat 7/18
5:05 am-10:45 am
Nonstop3h 40m
$473
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Mon 7/13
9:55 pm-11:50 pm
Nonstop3h 55m
Los Angeles
Tue 7/14
12:50 pm-6:25 pm
Nonstop3h 35m
$473
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 7/16
9:55 pm-11:50 pm
Nonstop3h 55m
Los Angeles
Mon 7/20
6:35 am-12:10 pm
Nonstop3h 35m
$486
St. LouisLos Angeles
STL - LAX
STLLAX
Lambert-St Louis
Thu 7/30
6:37 am-8:46 am
Nonstop4h 09m
Los Angeles
Sat 8/1
1:10 am-8:46 am
1 stop5h 36m
$512
Showing 1-10 of 21 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 June 20, 2026.
Unlike at noon, 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.
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 June 20, 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 (8 on average).
How much does it cost to fly round-trip from St. Louis to Irvine?
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 Tuesday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing 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 June 20, 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.
Comfort
8.0
Food
7.0
Crew
8.6
Overall
7.9
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Crew
8.6
Overall
7.9
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Crew
8.6
Overall
7.9
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Crew
8.6
Overall
7.9
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Crew
8.6
Overall
7.9
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Comfort
8.0
Food
7.0
Crew
8.6
Overall
7.9
Boarding
8.1
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Irvine. 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 Irvine
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St. Louis and Irvine flights
Browse other St. Louis and Irvine flight options. Last updated on June 20, 2026.
Other flights from St. Louis
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St. Louis to Irvine flights
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Top 7 airlines flying from St. Louis to Irvine
Discover the top 7 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 June 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$137 | Average$256 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$201 | Average$453 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$228 | Average$388 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$236 | Average$360 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$263 | Average$451 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$304 | Average$384 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$347 | Average$531 | FlexibilityNo cancel fee | On-time75% |