St. Louis

$135+ Cheap flights from Riverside, CA to St. Louis (STL)

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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — STL
Dec 23 — Dec 301
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The best prices from Riverside to Lambert-St Louis are usually found in August or September, booked 66 days in advance, depart on a Tuesday or Thursday and return on a Tuesday

Cheap flight deals from Riverside to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Riverside (R1V) to St. Louis (STL). 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 December 18, 2024.

Round-trip from

$160
(CheapOair)

One-way from

$135
(Trip.com)

Popular in

December

Cheapest in

August

Average price

$473
From Riverside to Lambert-St Louis
One-way flight from Riverside to Lambert-St Louis
High demand for flights, 9% potential price rise
Best time to find cheap flights, 1% potential price drop
Average for round-trip flights in December 2024

Find flight deals from Riverside to St. Louis

Cheapest flights from Riverside to St. Louis
Explore the most affordable flight options available from Riverside to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This Gotogate deal was found by Cheapflights users on 12/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/316:30 amLAX - STL
1 stop23h 43mFrontier
Thu 1/210:09 pmSTL - LAX
1 stop12h 26mFrontier
Deal found 12/17$245
This Mytrip deal was found by Cheapflights users on 12/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/307:15 pmLAX - STL
2 stops18h 06mMultiple Airlines
Mon 1/62:00 pmSTL - LAX
2 stops35h 40mMultiple Airlines
Deal found 12/16$363
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/241:30 pmLAX - STL
1 stop6h 04mDelta
Tue 1/215:00 pmSTL - LAX
1 stop7h 33mDelta
Deal found 12/17$431
This American Airlines deal was found by Cheapflights users on 12/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/315:50 pmLAX - STL
Nonstop3h 37mAmerican Airlines
Thu 1/26:30 amSTL - LAX
Nonstop4h 14mAmerican Airlines
Deal found 12/17$472
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2312:45 amLAX - STL
1 stop7h 11mUnited Airlines
Tue 1/218:27 amSTL - LAX
1 stop11h 19mUnited Airlines
Deal found 12/17$550
This Southwest deal was found by Cheapflights users on 12/17. 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.
Sun 12/223:15 pmLAX - STL
1 stop7h 15mSouthwest
Tue 1/219:55 amSTL - LAX
Nonstop4h 20mSouthwest
Deal found 12/17$672
This Alaska Airlines deal was found by Cheapflights users on 12/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/245:28 pmLAX - STL
1 stop17h 59mAlaska Airlines
Sat 12/286:30 amSTL - LAX
Nonstop4h 14mAlaska Airlines
Deal found 12/18$727

Find flights from Riverside to St. Louis within your budget

Customize your flight search to find flights from Riverside to St. Louis 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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Thu 3/6

8:09 pm-5:45 pm

1 stop19h 36m

Lambert-St Louis

Sun 3/9

6:38 pm-9:40 am

1 stop17h 02m

$160

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Wed 2/19

11:30 am-11:59 pm

2 stops10h 29m

Lambert-St Louis

Wed 2/26

6:54 pm-12:25 am

1 stop7h 31m

$230

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Fri 2/7

11:44 am-11:59 pm

1 stop10h 15m

Lambert-St Louis

Tue 2/11

2:49 pm-10:35 pm

1 stop9h 46m

$318

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Sun 1/19

4:00 pm-9:35 pm

Nonstop3h 35m

Lambert-St Louis

Sat 1/25

6:03 am-8:21 am

Nonstop4h 18m

$366

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Wed 1/15

11:35 am-5:10 pm

Nonstop3h 35m

Lambert-St Louis

Wed 1/22

9:55 am-12:15 pm

Nonstop4h 20m

$386

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Tue 1/14

12:51 am-9:55 am

1 stop7h 04m

Lambert-St Louis

Wed 2/12

1:45 pm-7:11 pm

1 stop7h 26m

$394

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Wed 2/19

6:00 am-2:50 pm

1 stop6h 50m

Lambert-St Louis

Fri 2/21

6:59 pm-11:55 pm

1 stop6h 56m

$414

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Sun 2/23

8:09 pm-9:16 am

2 stops11h 07m

$135

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Mon 2/3

4:18 pm-2:43 pm

2 stops20h 25m

$136

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Wed 1/22

11:52 pm-8:10 pm

2 stops18h 18m

$152

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 14 results
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Best time to book a flight from Riverside to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Riverside 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 Riverside to St. Louis

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

How far ahead should I book a flight from Riverside to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Riverside to St. Louis. Price data was last updated on December 13, 2024.

Booking 66 days in advance of your planned departure date is, on average, the best time to get cheap flights from Riverside to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from Riverside to St. Louis (average of $311). Flying from Riverside to St. Louis in March is currently the most expensive (average of $356). 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 R1V to STL?

Find hourly flight availability from Riverside to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2024.

When flying from Riverside to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Riverside to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Riverside to St. Louis. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Riverside to St. Louis flight should consider departing on Sunday 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 St. Louis by month

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

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

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

If weather is an important factor for your trip to St. Louis, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated December 18, 2024.
See what other customers who have flown with American Airlines, Alaska Airlines and Frontier from Riverside to St. Louis have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
4,848 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

8.1
Very good
4,848 reviews
8.1
Very good
4,848 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

8.0
Very good
9,552 reviews
8.1
Very good
4,848 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

8.0
Very good
8,604 reviews
8.1
Very good
4,848 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

7.4
Good
9,059 reviews
8.1
Very good
4,848 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

7.2
Good
10,000 reviews
8.1
Very good
4,848 reviews

Entertainment

7.7

Overall

8.1

Comfort

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

Find useful and relevant information for your journey from Riverside to St. Louis. 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 into for flights to St. Louis from Riverside?

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Riverside. On average, Lambert-St Louis has 0 inbound flights from Riverside 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 Riverside to St. Louis flight route?

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $135. Users have also found prices from $136 and $177 on Spirit Airlines and Alaska Airlines, respectively.

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

    Before booking your flight to St. Louis from Riverside, check out the most reliable airlines to get you to your destination on time: SkyWest Airlines (100%), American Airlines (85%), Alaska Airlines( 83%).

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

    Looking at all options, your cheapest flight can be booked for $183. While the most popular route (Los Angeles - Lambert-St Louis) can be booked for $227 on average our data indicates $410 when flying from Riverside to St. Louis.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Riverside to St. Louis 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 Riverside to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Riverside to St. Louis (average of $311). Flying from Riverside to St. Louis in March is currently the most expensive (average of $356). 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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Alternative routes for Riverside to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from Riverside to St. Louis

Discover the top 7 airlines that operate flights from Riverside to St. Louis. 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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$97Average$230FlexibilityNo cancel feeOn-time65%
FrontierCheapest$104Average$204FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$252Average$431FlexibilityNo cancel feeOn-time71%
DeltaCheapest$276Average$409FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$288Average$480FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$297Average$440FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$353Average$729FlexibilityNo cancel feeOn-time75%
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