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$99+ 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 3/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
1 adult, Economy
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The best prices from Lambert-St Louis to Irvine are usually found in September or August, booked 77 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap 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 February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$168
(Kiwi.com)

One-way from

$99
(Mytrip)

Popular in

March

Cheapest in

September

Average price

$415
Provider with most accurate pricing for Lambert-St Louis-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Los Angeles flights.
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From Lambert-St Louis to Irvine
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One-way flight from Lambert-St Louis to Irvine
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($11 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from St. Louis to Irvine

Cheapest flights from St. Louis to Irvine
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 February 22, 2025.

This Kiwi.com deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” 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 3/127:03 pmSTL - LAX
1 stop7h 22mFrontier
Sun 3/168:18 pmLAX - STL
1 stop11h 18mFrontier
Deal found 2/21$168
This CheapOair deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” 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 4/36:47 pmSTL - LAX
1 stop17h 11mMultiple Airlines
Mon 4/78:18 pmLAX - STL
1 stop25h 28mMultiple Airlines
Deal found 2/21$208
This Mytrip deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/36:47 pmSTL - LAX
3 stops43h 23mSpirit Airlines
Mon 4/74:29 pmLAX - STL
1 stop23h 23mSpirit Airlines
Deal found 2/21$269
This American Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” 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.
Wed 5/76:52 amSTL - LAX
Nonstop4h 06mAmerican Airlines
Mon 5/195:29 pmLAX - STL
Nonstop3h 35mAmerican Airlines
Deal found 2/21$277
This Southwest deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” 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 3/188:10 pmSTL - LAX
1 stop6h 10mSouthwest
Mon 3/246:45 pmLAX - STL
Nonstop3h 35mSouthwest
Deal found 2/22$287
This Delta deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/185:00 pmSTL - LAX
1 stop7h 27mDelta
Mon 3/245:22 pmLAX - STL
1 stop5h 10mDelta
Deal found 2/22$297
This United Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/13:40 pmSTL - LAX
1 stop6h 55mUnited Airlines
Fri 4/41:20 amLAX - STL
1 stop6h 36mUnited Airlines
Deal found 2/21$320
This Hawaiian Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/92:55 pmSTL - LAX
1 stop9h 40mHawaiian Airlines
Tue 9/236:00 amLAX - STL
1 stop10h 37mHawaiian Airlines
Deal found 2/21$384
This Alaska Airlines deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/97:00 amSTL - LAX
1 stop9h 40mAlaska Airlines
Tue 9/239:30 pmLAX - STL
2 stops14h 22mAlaska Airlines
Deal found 2/21$409

Find flights from St. Louis to Irvine within your budget

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 February 22, 2025.

Fly from

St. Louis

Fly to

Irvine

Route

Depart

Return

Price

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Wed 3/12

7:03 pm-12:25 am

1 stop7h 22m

Los Angeles

Sun 3/16

8:18 pm-9:36 am

1 stop11h 18m

$168

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 4/1

6:47 pm-10:43 pm

2 stops29h 56m

Los Angeles

Mon 4/7

4:29 pm-5:52 pm

1 stop23h 23m

$207

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Thu 4/3

6:47 pm-9:58 am

1 stop17h 11m

Los Angeles

Mon 4/7

8:18 pm-11:46 pm

1 stop25h 28m

$208

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Wed 5/7

6:52 am-8:58 am

Nonstop4h 06m

Los Angeles

Mon 5/19

5:29 pm-11:04 pm

Nonstop3h 35m

$277

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 3/18

8:10 pm-12:20 am

1 stop6h 10m

Los Angeles

Mon 3/24

6:45 pm-12:20 am

Nonstop3h 35m

$287

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 3/18

7:00 am-12:15 pm

1 stop7h 15m

Los Angeles

Wed 3/19

12:56 am-9:51 am

1 stop6h 55m

$297

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Thu 3/13

7:00 am-5:12 pm

2 stops12h 12m

Los Angeles

Thu 3/13

9:02 pm-11:59 pm

1 stop24h 57m

$413

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Wed 6/4

6:59 pm-11:48 pm

1 stop6h 49m

Los Angeles

Sat 6/7

12:45 am-8:32 am

1 stop5h 47m

$439

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Sat 3/1

7:04 pm-8:32 am

1 stop15h 28m

$99

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 3/25

6:47 pm-11:37 am

2 stops18h 50m

$102

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 17 results
1
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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.
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.

Travel insights for flights from St. Louis to Irvine

Get recent, data-driven insights about flights from St. Louis to Irvine including ideal travel times, pricing trends, and more.

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 February 14, 2025.

To ensure you get the cheapest price possible for a flight from St. Louis to Irvine, you should look to book at least 77 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, January is the cheapest month in which you can book a flight from St. Louis to Irvine (average of $246). Flying from St. Louis to Irvine in March is currently the most expensive (average of $344). 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 February 22, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Irvine as you normally would.

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 16, 2025.

Travelers seeking maximum savings on their St. Louis to Irvine flight should consider departing on Wednesday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Irvine by month

Plan your trip to Irvine by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Irvine ranges from 0.0 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. July is typically the driest time to visit Irvine when rainfall is around 0.0 in.

Temperature in Irvine by month

Plan your trip to Irvine by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Irvine, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

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 February 22, 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from St. Louis to Irvine have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,396 reviews

Entertainment

7.6

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Southwest
8.1
Very good
4,396 reviews
Southwest
8.1
Very good
4,396 reviews

Entertainment

7.6

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Alaska Airlines
8.0
Very good
9,702 reviews
Southwest
8.1
Very good
4,396 reviews

Entertainment

7.6

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Delta
8.0
Very good
8,203 reviews
Southwest
8.1
Very good
4,396 reviews

Entertainment

7.6

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Hawaiian Airlines
7.9
Good
2,314 reviews
Southwest
8.1
Very good
4,396 reviews

Entertainment

7.6

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

United Airlines
7.4
Good
8,754 reviews
Southwest
8.1
Very good
4,396 reviews

Entertainment

7.6

Comfort

8.1

Food

7.1

Boarding

8.2

Crew

8.7

Overall

8.1

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

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.

  • What airport do you fly from for flights from St. Louis to Irvine?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Irvine. On average, Lambert-St Louis has 0 outbound flights to Irvine per day from 7 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • How popular is this St. Louis to Irvine flight route?

    The Lambert-St Louis to Irvine flight path was viewed by 14 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from St. Louis to Irvine one-way?

    One-way options have recently been found by users for as low as $99 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $102 and Southwest from $139 one-way.

  • What are the most reliable airlines from St. Louis to Irvine?

    The top 3 most reliable airlines when flying from St. Louis to Irvine are Qatar Airways (95%), Japan Airlines (90%) and Alaska Airlines (90%).

  • What are the cheapest flights from St. Louis to Irvine?

    Looking at all options, your cheapest flight can be booked for $163. While the most popular route (Lambert-St Louis - Los Angeles) can be booked for $180 on average our data indicates $1,418 when flying from St. Louis to Irvine.

  • Can I find deals for flights from St. Louis to Irvine that include hotel bookings?

    Yes. In addition to deals on St. Louis to Irvine flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Irvine?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Irvine.

  • Can I find deals for business class flights from St. Louis to Irvine?

    Yes. Cheapflights offers flight deals from St. Louis to Irvine by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Irvine?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Irvine (average of $246). Flying from St. Louis to Irvine in March is currently the most expensive (average of $344). 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.

See more FAQs

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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 February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$94Average$203FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$119Average$234FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$269Average$428FlexibilityNo cancel feeOn-time71%
DeltaCheapest$269Average$417FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$282Average$450FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$296Average$562FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$296Average$503FlexibilityNo cancel feeOn-time69%
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