How popular is this St. Louis to Riverside flight route?

This flight path from Lambert-St Louis to Riverside was viewed by 16 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

How long is the flight from St. Louis to Riverside?

Airlines like Delta and United Airlines fly from St. Louis to Riverside in about 6h 30m. The time it takes to get you to your destination can typically vary by up to 4h 59m. There are 1588 mi between St. Louis and Riverside. Both multi-stop and nonstop flights can be found to your destination and back.

In terms of precipitation, rainfall in Riverside 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 Riverside when rainfall is around 0.0 in.

If weather is an important factor for your trip to Riverside, 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).

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

Looking at all options, your cheapest flight can be booked for $147. While the most popular route (Lambert-St Louis - Los Angeles) can be booked for $130 on average, our data indicates $1,288 when flying from St. Louis to Riverside.

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

Consider Cathay Pacific (79%), Qantas Airways (77%) or Japan Airlines (77%) when booking your flight. These represent the most reliable airlines when flying from St. Louis to Riverside.

What are the most popular airlines that fly from St. Louis to Riverside?

Before booking your flight from St. Louis to Riverside check out the most popular airlines for this route: Southwest, American Airlines or Frontier.

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

If you book a flight to Riverside from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 6 flights from Lambert-St Louis to Riverside per day from 7 different airlines.

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

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

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

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

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

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

$103+ Flights from St. Louis to Riverside

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from St. Louis to Riverside 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 Riverside are usually found in September or January, booked 58 days in advance, depart on a Wednesday or Thursday and return on a Thursday

Cheap flight deals from St. Louis to Riverside

Most accurate provider	Justfly.com 3 stars
Most trusted provider	Justfly.com 3 stars
Round-trip from	$176 (CheapOair)
One-way from	$103 (Kiwi.com)
Popular in	March
Cheapest in	September
Average price	$372

Provider with most accurate pricing for Lambert-St Louis-Los Angeles flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-Los Angeles flights.

Search Deals

From Lambert-St Louis to Riverside

Search Deals

One-way flight from Lambert-St Louis to Riverside

Search Deals

Highest demand for flights based on searches. 3% potential increase in price ($14 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in October 2025

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Find flight deals from St. Louis to Riverside

Cheapest flights from St. Louis to Riverside
Explore the most affordable flight options available from St. Louis to Riverside. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

Mon 11/312:09 pmSTL - LAX

1 stop5h 36mFrontier

Thu 11/133:27 pmLAX - STL

1 stop20h 30mFrontier

Deal found 10/27

$176

Mon 11/1012:09 pmSTL - LAX

1 stop5h 36mMultiple Airlines

Thu 11/139:04 amLAX - STL

2 stops22h 03mMultiple Airlines

Deal found 10/27

$179

Wed 11/127:45 pmSTL - LAX

1 stop15h 48mFrontier

Sun 11/166:44 amLAX - STL

1 stop24h 23mFrontier

Deal found 10/27

$182

Wed 12/317:43 pmSTL - LAX

1 stop13h 59mFrontier

Mon 1/55:09 pmLAX - STL

2 stops38h 53mFrontier

Deal found 10/27

$183

Mon 12/13:53 pmSTL - LAX

1 stop20h 46mFrontier

Fri 12/58:51 pmLAX - STL

1 stop11h 23mFrontier

Deal found 10/26

$192

Mon 11/247:04 pmSTL - LAX

1 stop21h 43mFrontier

Fri 12/58:51 pmLAX - STL

1 stop11h 23mFrontier

Deal found 10/26

$193

Thu 11/132:42 pmSTL - LAX

1 stop7h 11mMultiple Airlines

Fri 11/146:10 amLAX - STL

2 stops24h 57mMultiple Airlines

Deal found 10/28

$195

Tue 12/3010:48 amSTL - LAX

1 stop25h 22mFrontier

Sat 1/311:08 amLAX - STL

2 stops54h 59mFrontier

Deal found 10/28

$197

Wed 12/177:43 pmSTL - LAX

1 stop13h 59mFrontier

Tue 12/238:58 pmLAX - STL

1 stop11h 04mFrontier

Deal found 10/29

$198

Tue 11/117:45 pmSTL - LAX

1 stop6h 40mFrontier

Sat 11/152:48 pmLAX - STL

1 stop16h 19mFrontier

Deal found 10/28

$200

Thu 11/132:42 pmSTL - LAX

1 stop7h 11mMultiple Airlines

Sat 11/159:04 amLAX - STL

2 stops22h 03mMultiple Airlines

Deal found 10/28

$201

Best flights from St. Louis to Riverside
Discover carefully curated flight deals from St. Louis to Riverside that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 29, 2025.

Tue 12/96:00 amSTL - LAX

2 stops11h 29mDelta

Tue 12/1611:40 amLAX - STL

2 stops11h 21mDelta

Deal found 10/28

$314

Tue 3/108:30 amSTL - LAX

1 stop6h 30mUnited Airlines

Fri 3/1312:25 amLAX - STL

1 stop7h 56mUnited Airlines

Deal found 10/27

$315

Tue 3/108:25 amSTL - LAX

Nonstop4h 10mSouthwest

Sat 3/144:05 pmLAX - STL

1 stop7h 45mSouthwest

Deal found 10/27

$320

Sat 12/66:30 amSTL - LAX

2 stops12h 24mDelta

Wed 12/1011:40 amLAX - STL

2 stops11h 21mDelta

Deal found 10/28

$314

Tue 2/174:30 pmSTL - LAX

1 stop6h 49mUnited Airlines

Mon 2/2312:55 amLAX - STL

1 stop6h 28mUnited Airlines

Deal found 10/27

$315

Fri 1/910:15 amSTL - LAX

1 stop8h 00mSouthwest

Tue 1/1311:35 amLAX - STL

Nonstop3h 35mSouthwest

Deal found 10/27

$320

Tue 3/173:00 pmSTL - LAX

1 stop5h 58mUnited Airlines

Tue 3/3112:40 amLAX - STL

1 stop7h 02mUnited Airlines

Deal found 10/28

$315

Tue 4/141:30 pmSTL - LAX

1 stop5h 43mUnited Airlines

Sat 4/185:00 amLAX - STL

1 stop5h 43mUnited Airlines

Deal found 10/27

$315

Sat 4/49:13 amSTL - LAX

1 stop5h 47mUnited Airlines

Fri 4/1012:40 amLAX - STL

1 stop7h 02mUnited Airlines

Deal found 10/28

$315

Last-minute flights from St. Louis to Riverside
Discover last-minute flight deals from St. Louis to Riverside. Data last updated October 29, 2025 and is based on user searches.

Mon 11/312:09 pmSTL - LAX

1 stop5h 36mFrontier

Thu 11/133:27 pmLAX - STL

1 stop20h 30mFrontier

Deal found 10/27

$176

Mon 11/1012:09 pmSTL - LAX

1 stop5h 36mMultiple Airlines

Thu 11/139:04 amLAX - STL

2 stops22h 03mMultiple Airlines

Deal found 10/27

$179

Tue 11/117:45 pmSTL - LAX

1 stop6h 40mFrontier

Wed 11/122:48 pmLAX - STL

1 stop16h 19mFrontier

Deal found 10/28

$200

Wed 11/127:45 pmSTL - LAX

1 stop15h 48mFrontier

Sun 11/166:44 amLAX - STL

1 stop24h 23mFrontier

Deal found 10/27

$182

Wed 11/127:45 pmSTL - LAX

1 stop6h 40mMultiple Airlines

Tue 11/1812:59 amLAX - STL

2 stops20h 02mMultiple Airlines

Deal found 10/27

$204

Thu 11/132:42 pmSTL - LAX

1 stop7h 11mMultiple Airlines

Fri 11/146:10 amLAX - STL

2 stops24h 57mMultiple Airlines

Deal found 10/28

$195

Thu 11/132:42 pmSTL - LAX

1 stop7h 11mMultiple Airlines

Sat 11/159:04 amLAX - STL

2 stops22h 03mMultiple Airlines

Deal found 10/28

$201

Thu 11/132:42 pmSTL - LAX

1 stop7h 11mFrontier

Fri 11/149:22 pmLAX - STL

1 stop9h 45mFrontier

Deal found 10/28

$202

Thu 11/132:42 pmSTL - LAX

1 stop7h 11mFrontier

Sun 11/167:48 pmLAX - STL

2 stops35h 19mFrontier

Deal found 10/26

$207

Mon 11/247:04 pmSTL - LAX

1 stop21h 43mFrontier

Fri 12/58:51 pmLAX - STL

1 stop11h 23mFrontier

Deal found 10/26

$193

Thu 11/273:14 pmSTL - LAX

1 stop8h 16mFrontier

Thu 12/48:51 pmLAX - STL

1 stop11h 23mFrontier

Deal found 10/26

$206

One-way flights from St. Louis to Riverside
Search for one-way flight options from St. Louis to Riverside. Find affordable one-way fares based on user searches. Data last updated October 29, 2025.

Mon 11/107:45 pmSTL - LAX

2 stops14h 29mMultiple Airlines

Deal found 10/27

$103

Sat 12/207:43 pmSTL - LAX

2 stops42h 33mFrontier

Deal found 10/27

$105

Sun 2/88:36 pmSTL - LAX

1 stop12h 26mFrontier

Deal found 10/27

$106

Fri 12/57:43 pmSTL - LAX

1 stop24h 55mFrontier

Deal found 10/27

$107

Mon 12/157:43 pmSTL - LAX

2 stops26h 22mFrontier

Deal found 10/27

$108

Wed 1/287:43 pmSTL - LAX

1 stop21h 04mFrontier

Deal found 10/27

$109

Mon 12/227:43 pmSTL - LAX

2 stops26h 48mFrontier

Deal found 10/28

$110

Tue 11/47:45 pmSTL - LAX

1 stop6h 40mFrontier

Deal found 10/28

$111

Sun 12/710:42 amSTL - LAX

2 stops39h 47mFrontier

Deal found 10/28

$112

Tue 12/3010:48 amSTL - LAX

1 stop25h 22mFrontier

Deal found 10/27

$113

Mon 11/247:04 pmSTL - LAX

1 stop21h 43mFrontier

Deal found 10/27

$115

Fri 1/28:42 pmSTL - LAX

1 stop12h 56mFrontier

Deal found 10/27

$116

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Riverside that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 12/9

6:00 am-3:29 pm

2 stops11h 29m

Los Angeles

Tue 12/16

11:40 am-1:01 am

2 stops11h 21m

$314

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Sat 12/6

6:30 am-4:54 pm

2 stops12h 24m

Los Angeles

Wed 12/10

11:40 am-1:01 am

2 stops11h 21m

$314

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 3/10

8:30 am-1:00 pm

1 stop6h 30m

Los Angeles

Fri 3/13

12:25 am-10:21 am

1 stop7h 56m

$315

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 2/17

4:30 pm-9:19 pm

1 stop6h 49m

Los Angeles

Mon 2/23

12:55 am-9:23 am

1 stop6h 28m

$315

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 3/17

3:00 pm-6:58 pm

1 stop5h 58m

Los Angeles

Tue 3/31

12:40 am-9:42 am

1 stop7h 02m

$315

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 4/14

1:30 pm-5:13 pm

1 stop5h 43m

Los Angeles

Sat 4/18

5:00 am-12:43 pm

1 stop5h 43m

$315

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Sat 4/4

9:13 am-1:00 pm

1 stop5h 47m

Los Angeles

Fri 4/10

12:40 am-9:42 am

1 stop7h 02m

$315

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Tue 3/10

8:25 am-10:35 am

Nonstop4h 10m

Los Angeles

Sat 3/14

4:05 pm-1:50 am

1 stop7h 45m

$320

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Fri 1/9

10:15 am-4:15 pm

1 stop8h 00m

Los Angeles

Tue 1/13

11:35 am-5:10 pm

Nonstop3h 35m

$320

St. LouisLos Angeles

STL - LAX

STLLAX

Lambert-St Louis

Thu 1/8

10:42 am-9:11 am

1 stop24h 29m

$133

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 20 results

Best time to book a flight from St. Louis to Riverside

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

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Riverside

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

To ensure you get the cheapest price possible for a flight from St. Louis to Riverside, you should look to book at least 58 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 Riverside?

Currently, November is the cheapest month in which you can book a flight from St. Louis to Riverside (average of $67). Flying from St. Louis to Riverside in May is currently the most expensive (average of $214). 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 R1V?

Unlike in the morning, when flights are generally more expensive, you can save up to 55% on flights from St. Louis to Riverside by exploring options for tickets in the evening.

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

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

Reviews of airlines servicing Riverside

Read through reviews of airlines operating flights from St. Louis to Riverside, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Southwest

8.0

Very good

4,241 reviews

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Delta

7.9

Good

7,992 reviews

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

United Airlines

7.4

Good

8,999 reviews

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

American Airlines

7.2

Good

11,032 reviews

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Frontier

5.8

Fair

3,124 reviews

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Related info for your journey

What airport do you fly from for flights from St. Louis to Riverside?
If you book a flight to Riverside from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 6 flights from Lambert-St Louis to Riverside per day from 7 different airlines.
How popular is this St. Louis to Riverside flight route?
This flight path from Lambert-St Louis to Riverside was viewed by 16 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
How long is the flight from St. Louis to Riverside?
Airlines like Delta and United Airlines fly from St. Louis to Riverside in about 6h 30m. The time it takes to get you to your destination can typically vary by up to 4h 59m. There are 1588 mi between St. Louis and Riverside. Both multi-stop and nonstop flights can be found to your destination and back.
What are the most reliable airlines from St. Louis to Riverside?
Consider Cathay Pacific (79%), Qantas Airways (77%) or Japan Airlines (77%) when booking your flight. These represent the most reliable airlines when flying from St. Louis to Riverside.
What are the cheapest flights from St. Louis to Riverside?
Looking at all options, your cheapest flight can be booked for $147. While the most popular route (Lambert-St Louis - Los Angeles) can be booked for $130 on average, our data indicates $1,288 when flying from St. Louis to Riverside.
Can I find deals for flights from St. Louis to Riverside that include hotel bookings?
Yes. In addition to deals on St. Louis to Riverside flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Riverside?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Riverside.
Can I find deals for business class flights from St. Louis to Riverside?
Yes. Cheapflights offers flight deals from St. Louis to Riverside 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 Riverside?
Currently, November is the cheapest month in which you can book a flight from St. Louis to Riverside (average of $67). Flying from St. Louis to Riverside in May is currently the most expensive (average of $214). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 7 airlines flying from St. Louis to Riverside

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$94	Average$224	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$171	Average$365	FlexibilityNo cancel fee	On-timeN/A
Spirit Airlines	Cheapest$172	Average$173	FlexibilityNo cancel fee	On-time65%
Southwest	Cheapest$259	Average$432	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$264	Average$404	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$270	Average$431	FlexibilityNo cancel fee	On-time69%
Alaska Airlines	Cheapest$296	Average$547	FlexibilityNo cancel fee	On-time75%

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$103+ Cheap flights from St. Louis (STL) to Riverside, 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 11/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Riverside with Cheapflights

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3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to Riverside are usually found in September or January, booked 58 days in advance, depart on a Wednesday or Thursday and return on a Thursday

Cheap flight deals from St. Louis to Riverside

Keep the following information in mind while searching for St. Louis to Riverside flight deals. Data was last updated October 29, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Riverside

Cheapest flights from St. Louis to RiversideExplore the most affordable flight options available from St. Louis to Riverside. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

Explore the most affordable flight options available from St. Louis to Riverside. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Riverside that are best for you.

Best time to book a flight from St. Louis to Riverside

Have a flexible travel schedule? Discover the best time to fly to Riverside from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Riverside

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Riverside. Price data was last updated on October 24, 2025.

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

What is the cheapest time of day to fly from STL to R1V?

Find hourly flight availability from St. Louis to Riverside. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Riverside. Price data was last updated on October 26, 2025.

Reviews of airlines servicing Riverside

Read through reviews of airlines operating flights from St. Louis to Riverside, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

How popular is this St. Louis to Riverside flight route?

How long is the flight from St. Louis to Riverside?

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

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

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

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

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

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

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.

Alternative routes for St. Louis to Riverside

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

Top 7 airlines flying from St. Louis to Riverside

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Cheapest flights from St. Louis to Riverside
Explore the most affordable flight options available from St. Louis to Riverside. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.