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$86+ 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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
STL — LAX
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
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 Friday and return on a Tuesday

Cheap flight deals from St. Louis to Irvine

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Irvine (IR9). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$139
(Mytrip)

One-way from

$86
(CheapOair)

Popular in

March

Cheapest in

September

Average price

$416
From Lambert-St Louis to Irvine
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One-way flight from Lambert-St Louis to Irvine
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Highest demand for flights based on searches. 2% potential increase in price ($9 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in January 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 January 21, 2025.

This Mytrip deal was found by Cheapflights users on 1/21. 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.
Fri 2/2111:08 pmSTL - LAX
1 stop16h 27mFrontier
Thu 2/278:09 pmLAX - STL
1 stop23h 59mFrontier
Deal found 1/21$139
This Travelocity deal was found by Cheapflights users on 1/19. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/157:04 pmSTL - LAX
1 stop7h 21mMultiple Airlines
Wed 2/261:58 pmLAX - STL
1 stop8h 01mMultiple Airlines
Deal found 1/19$231
This American Airlines deal was found by Cheapflights users on 1/21. 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.
Mon 3/36:10 amSTL - LAX
Nonstop4h 22mAmerican Airlines
Thu 3/65:35 pmLAX - STL
Nonstop3h 28mAmerican Airlines
Deal found 1/21$277
This Southwest deal was found by Cheapflights users on 1/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1812:10 pmSTL - LAX
Nonstop4h 20mSouthwest
Tue 2/252:45 pmLAX - STL
1 stop5h 25mSouthwest
Deal found 1/21$287
This United Airlines deal was found by Cheapflights users on 1/20. 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.
Mon 2/241:03 pmSTL - LAX
1 stop7h 22mUnited Airlines
Thu 2/2712:55 amLAX - STL
1 stop6h 56mUnited Airlines
Deal found 1/20$358
This Delta deal was found by Cheapflights users on 1/20. 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.
Sat 2/153:35 pmSTL - LAX
1 stop7h 36mDelta
Tue 2/186:00 amLAX - STL
1 stop8h 53mDelta
Deal found 1/20$359
This Alaska Airlines deal was found by Cheapflights users on 1/21. 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.
Mon 3/37:00 amSTL - LAX
1 stop9h 55mAlaska Airlines
Thu 3/66:00 amLAX - STL
2 stops15h 59mAlaska Airlines
Deal found 1/21$368
This Mytrip deal was found by Cheapflights users on 1/21. 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 1/234:28 pmSTL - LAX
2 stops20h 46mSpirit Airlines
Mon 1/2711:20 pmLAX - STL
2 stops13h 23mSpirit Airlines
Deal found 1/21$393

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Mon 2/24

11:08 pm-9:40 am

1 stop12h 32m

Los Angeles

Fri 2/28

6:30 am-9:16 am

1 stop24h 46m

$140

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Sat 2/15

7:04 pm-12:25 am

1 stop7h 21m

Los Angeles

Wed 2/26

1:58 pm-11:59 pm

1 stop8h 01m

$231

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Mon 3/3

6:10 am-8:32 am

Nonstop4h 22m

Los Angeles

Thu 3/6

5:35 pm-11:03 pm

Nonstop3h 28m

$277

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Fri 2/21

5:50 pm-8:10 pm

Nonstop4h 20m

Los Angeles

Mon 2/24

6:15 am-11:50 am

Nonstop3h 35m

$351

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Sat 2/15

10:18 am-3:35 pm

1 stop7h 17m

Los Angeles

Tue 2/25

12:55 am-9:51 am

1 stop6h 56m

$353

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Sat 2/15

3:35 pm-9:11 pm

1 stop7h 36m

Los Angeles

Tue 2/18

6:00 am-4:53 pm

1 stop8h 53m

$359

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Mon 3/3

7:00 am-2:55 pm

1 stop9h 55m

Los Angeles

Thu 3/6

9:19 pm-11:59 pm

2 stops24h 40m

$368

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 4/22

5:52 pm-5:48 pm

1 stop25h 56m

$86

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 3/18

5:38 pm-9:58 am

1 stop18h 20m

$118

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 4/1

6:15 pm-8:25 pm

Nonstop4h 10m

$139

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 16 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 January 17, 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 January 21, 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 December 16, 2024.

Travelers seeking maximum savings on their St. Louis to Irvine flight should consider departing on Tuesday evenings when fares are most often at their lowest. Monday at noon 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 January 21, 2025.

The most flights from STL to IR9 are scheduled on a Monday (10 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (1 on average).

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 January 21, 2025.
See what other customers who have flown with United Airlines, Frontier and Alaska Airlines 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
4,662 reviews

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

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
4,662 reviews
Southwest
8.1
Very good
4,662 reviews

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

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
9,706 reviews
Southwest
8.1
Very good
4,662 reviews

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

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
8,521 reviews
Southwest
8.1
Very good
4,662 reviews

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

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
8,984 reviews
Southwest
8.1
Very good
4,662 reviews

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

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

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,662 reviews

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Comfort

8.1

Reviews

1 / 10

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 5 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 19 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 $86 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $118 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 (99%), Japan Airlines (92%) and Alaska Airlines (92%).

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

    Looking at all options, your cheapest flight can be booked for $182. While the most popular route (Lambert-St Louis - Los Angeles) can be booked for $204 on average our data indicates $1,310 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.

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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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$94Average$204FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$119Average$234FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$269Average$427FlexibilityNo cancel feeOn-time71%
DeltaCheapest$275Average$421FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$279Average$462FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$310Average$520FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$332Average$659FlexibilityNo cancel feeOn-time75%
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