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

Flights from Riverside to Lambert-St Louis have been viewed 24 times in the past calendar month.

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

For as low as $239, Delta can have you in St. Louis from Riverside in 5h 25m. The distance between Riverside and St. Louis is about 1588 mi. This flight may include one or multiple stops.

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 $67. Users have also found prices from $130 and $142 on Delta and American Airlines, respectively.

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.

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).

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

Looking at all options, your cheapest flight can be booked for $118. While the most popular route (Los Angeles - Lambert-St Louis) can be booked for $152 on average, our data indicates $322 when flying from Riverside to St. Louis.

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 (86%), American Airlines (86%), Qatar Airways( 80%).

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

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

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 9 inbound flights from Riverside per day from 6 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

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.

$142+ Flights from Riverside to St. Louis

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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 Riverside to Lambert-St Louis are usually found in October or April, booked 51 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap 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 4, 2025.

Tue 12/163:30 pmLAX - STL

2 stops16h 44mMultiple Airlines

Thu 12/185:19 pmSTL - LAX

1 stop15h 59mMultiple Airlines

Deal found 12/2

$203

Wed 12/173:30 pmLAX - STL

1 stop22h 54mFrontier

Fri 12/1910:10 pmSTL - LAX

1 stop16h 18mFrontier

Deal found 12/2

$207

Fri 12/128:51 pmLAX - STL

1 stop11h 23mFrontier

Wed 12/177:43 pmSTL - LAX

1 stop13h 59mFrontier

Deal found 12/3

$208

Thu 12/189:58 pmLAX - STL

1 stop21h 27mFrontier

Sun 12/2110:10 pmSTL - LAX

1 stop24h 21mFrontier

Deal found 12/2

$217

Tue 12/167:00 amLAX - STL

1 stop25h 14mFrontier

Tue 1/65:11 pmSTL - LAX

2 stops28h 10mFrontier

Deal found 12/2

$218

Thu 12/189:20 pmLAX - STL

1 stop22h 05mMultiple Airlines

Tue 12/2310:10 pmSTL - LAX

1 stop16h 06mMultiple Airlines

Deal found 12/2

$219

Sun 12/1410:24 pmLAX - STL

1 stop11h 48mMultiple Airlines

Thu 12/185:19 pmSTL - LAX

1 stop15h 59mMultiple Airlines

Deal found 12/2

$223

Sat 12/1310:39 pmLAX - STL

1 stop9h 08mFrontier

Sat 1/107:43 pmSTL - LAX

1 stop14h 54mFrontier

Deal found 12/4

$225

Thu 12/113:30 pmLAX - STL

1 stop28h 18mFrontier

Sun 12/1410:44 pmSTL - LAX

2 stops13h 44mFrontier

Deal found 12/2

$227

Tue 12/238:58 pmLAX - STL

1 stop11h 04mFrontier

Sun 1/410:10 pmSTL - LAX

1 stop24h 21mFrontier

Deal found 12/2

$229

Wed 12/103:30 pmLAX - STL

1 stop18h 42mFrontier

Thu 12/113:30 pmSTL - LAX

2 stops30h 35mFrontier

Deal found 12/2

$230

Fri 12/128:51 pmLAX - STL

1 stop11h 23mFrontier

Sun 12/1410:44 pmSTL - LAX

2 stops13h 44mFrontier

Deal found 12/2

$233

Best flights from Riverside to St. Louis
Discover carefully curated flight deals from Riverside to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 4, 2025.

Tue 1/136:00 amLAX - STL

1 stop8h 45mDelta

Tue 1/203:31 pmSTL - LAX

1 stop7h 47mDelta

Deal found 12/2

$237

Wed 1/216:30 amLAX - STL

1 stop5h 25mSouthwest

Sat 1/2410:25 amSTL - LAX

Nonstop4h 20mSouthwest

Deal found 12/2

$239

Fri 1/3011:20 amLAX - STL

1 stop9h 26mHawaiian Airlines

Mon 2/22:50 pmSTL - LAX

1 stop8h 46mHawaiian Airlines

Deal found 12/1

$260

Wed 2/118:50 amLAX - STL

1 stop10h 25mAmerican Airlines

Sun 2/1510:04 amSTL - LAX

1 stop10h 58mAmerican Airlines

Deal found 12/4

$273

Wed 1/2811:35 amLAX - STL

Nonstop3h 35mSouthwest

Sun 2/19:50 amSTL - LAX

Nonstop4h 20mSouthwest

Deal found 12/2

$244

Fri 1/163:20 pmLAX - STL

1 stop6h 05mDelta

Mon 1/193:31 pmSTL - LAX

1 stop7h 47mDelta

Deal found 12/4

$262

Fri 2/611:25 amLAX - STL

Nonstop3h 35mSouthwest

Mon 2/97:45 pmSTL - LAX

Nonstop4h 15mSouthwest

Deal found 12/4

$256

Mon 1/1212:40 pmLAX - STL

1 stop8h 45mDelta

Sun 1/186:10 amSTL - LAX

1 stop9h 40mDelta

Deal found 12/2

$276

Thu 1/88:45 amLAX - STL

2 stops6h 25mSouthwest

Mon 1/122:15 pmSTL - LAX

2 stops9h 10mSouthwest

Deal found 12/4

$267

Wed 1/146:00 amLAX - STL

1 stop7h 00mDelta

Fri 1/166:55 pmSTL - LAX

2 stops15h 26mDelta

Deal found 12/2

$287

Last-minute flights from Riverside to St. Louis
Discover last-minute flight deals from Riverside to St. Louis. Data last updated December 4, 2025 and is based on user searches.

Fri 12/128:51 pmLAX - STL

1 stop11h 23mFrontier

Wed 12/177:43 pmSTL - LAX

1 stop13h 59mFrontier

Deal found 12/3

$208

Tue 12/163:30 pmLAX - STL

2 stops16h 44mMultiple Airlines

Thu 12/185:19 pmSTL - LAX

1 stop15h 59mMultiple Airlines

Deal found 12/2

$203

Tue 12/167:00 amLAX - STL

1 stop25h 14mFrontier

Tue 1/65:11 pmSTL - LAX

2 stops28h 10mFrontier

Deal found 12/2

$218

Wed 12/173:30 pmLAX - STL

1 stop22h 54mFrontier

Fri 12/1910:10 pmSTL - LAX

1 stop16h 18mFrontier

Deal found 12/2

$207

Thu 12/189:58 pmLAX - STL

1 stop21h 27mFrontier

Sun 12/2110:10 pmSTL - LAX

1 stop24h 21mFrontier

Deal found 12/2

$217

Thu 12/189:20 pmLAX - STL

1 stop22h 05mMultiple Airlines

Tue 12/2310:10 pmSTL - LAX

1 stop16h 06mMultiple Airlines

Deal found 12/2

$219

Fri 1/94:33 pmLAX - STL

1 stop15h 29mFrontier

Sun 1/119:46 pmSTL - LAX

2 stops12h 51mFrontier

Deal found 12/4

$221

Sat 1/104:07 pmLAX - STL

2 stops14h 33mMultiple Airlines

Fri 1/169:03 pmSTL - LAX

1 stop14h 03mMultiple Airlines

Deal found 12/2

$222

Sun 1/119:46 pmLAX - STL

2 stops10h 16mFrontier

Sun 1/1810:09 pmSTL - LAX

1 stop12h 11mFrontier

Deal found 12/2

$209

Mon 1/1211:00 amLAX - STL

1 stop7h 35mSouthwest

Tue 1/1310:35 amSTL - LAX

1 stop6h 05mSouthwest

Deal found 12/3

$220

Tue 1/137:07 pmLAX - STL

2 stops17h 41mMultiple Airlines

Sun 1/181:35 pmSTL - LAX

1 stop7h 47mMultiple Airlines

Deal found 12/2

$213

Wed 1/214:07 pmLAX - STL

1 stop26h 59mMultiple Airlines

Fri 1/237:39 pmSTL - LAX

1 stop20h 05mMultiple Airlines

Deal found 12/1

$211

One-way flights from Riverside to St. Louis
Search for one-way flight options from Riverside to St. Louis. Find affordable one-way fares based on user searches. Data last updated December 4, 2025.

Fri 12/269:15 amLAX - STL

1 stop8h 32mFrontier

Deal found 12/4

$142

Tue 12/97:00 amLAX - STL

1 stop25h 14mFrontier

Deal found 12/3

$147

Sun 12/289:20 pmLAX - STL

2 stops20h 47mMultiple Airlines

Deal found 12/2

$148

Mon 1/55:59 pmLAX - STL

2 stops38h 03mMultiple Airlines

Deal found 12/2

$149

Fri 12/199:15 amLAX - STL

1 stop8h 32mFrontier

Deal found 12/4

$150

Mon 12/158:56 pmLAX - STL

2 stops35h 18mFrontier

Deal found 12/2

$152

Thu 2/56:21 pmLAX - STL

Nonstop3h 38mAmerican Airlines

Deal found 12/3

$153

Sat 1/38:33 amLAX - STL

2 stops47h 29mFrontier

Deal found 12/2

$154

Thu 1/89:17 amLAX - STL

3 stops20h 33mMultiple Airlines

Deal found 12/2

$155

Wed 1/149:55 amLAX - STL

2 stops9h 40mDelta

Deal found 12/2

$157

Thu 1/17:10 amLAX - STL

1 stop8h 10mSouthwest

Deal found 12/2

$158

Wed 1/147:07 pmLAX - STL

3 stops25h 27mMultiple Airlines

Deal found 12/2

$160

Find flight deals from Riverside to St. Louis

Most accurate provider	CheapOair 3 stars
Most trusted provider	CheapOair 3 stars
Round-trip from	$203 (Kiwi.com)
One-way from	$142 (Frontier)
Popular in	December
Cheapest in	October
Average price	$459

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

Search Deals

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

Search Deals

From Riverside to Lambert-St Louis

Search Deals

One-way flight from Riverside to Lambert-St Louis

Search Deals

Highest demand for flights based on searches. 4% potential increase in price ($19 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 December 2025

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Tue 1/13

6:00 am-4:45 pm

1 stop8h 45m

Lambert-St Louis

Tue 1/20

3:31 pm-9:18 pm

1 stop7h 47m

$237

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Wed 1/21

6:30 am-1:55 pm

1 stop5h 25m

Lambert-St Louis

Sat 1/24

10:25 am-12:45 pm

Nonstop4h 20m

$239

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Wed 1/28

11:35 am-5:10 pm

Nonstop3h 35m

Lambert-St Louis

Sun 2/1

9:50 am-12:10 pm

Nonstop4h 20m

$244

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Fri 2/6

11:25 am-5:00 pm

Nonstop3h 35m

Lambert-St Louis

Mon 2/9

7:45 pm-10:00 pm

Nonstop4h 15m

$256

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Fri 1/30

11:20 am-10:46 pm

1 stop9h 26m

Lambert-St Louis

Mon 2/2

2:50 pm-9:36 pm

1 stop8h 46m

$260

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Fri 1/16

3:20 pm-11:25 pm

1 stop6h 05m

Lambert-St Louis

Mon 1/19

3:31 pm-9:18 pm

1 stop7h 47m

$262

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Thu 1/8

8:45 am-5:10 pm

2 stops6h 25m

Lambert-St Louis

Mon 1/12

2:15 pm-9:25 pm

2 stops9h 10m

$267

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Wed 2/11

8:50 am-9:15 pm

1 stop10h 25m

Lambert-St Louis

Sun 2/15

10:04 am-7:02 pm

1 stop10h 58m

$273

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Mon 1/12

12:40 pm-11:25 pm

1 stop8h 45m

Lambert-St Louis

Sun 1/18

6:10 am-1:50 pm

1 stop9h 40m

$276

Los AngelesSt. Louis

LAX - STL

LAXSTL

Los Angeles

Wed 1/14

6:00 am-3:00 pm

1 stop7h 00m

Lambert-St Louis

Fri 1/16

6:55 pm-8:21 am

2 stops15h 26m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/4

Showing 1-10 of 20 results

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.

Cheapflights Insights

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

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

Booking 51 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, September is the cheapest month in which you can book a flight from Riverside to St. Louis (average of $71). Flying from Riverside to St. Louis in March is currently the most expensive (average of $220). 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?

It’s optimal to fly from Riverside to St. Louis in the evening. By choosing this option you can save up to 36% on the cost of your flight, compared to a flight at noon.

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

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

Weekly flight availability from Riverside to St. Louis

The most flights from R1V to STL are scheduled on a Wednesday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).

Reviews of airlines servicing St. Louis

See what other customers who have flown with Southwest, Delta, and United Airlines from Riverside to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Southwest

8.0

Very good

4,250 reviews

Southwest

8.0

Very good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Delta

7.9

Good

8,011 reviews

Southwest

8.0

Very good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

United Airlines

7.4

Good

9,066 reviews

Southwest

8.0

Very good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

American Airlines

7.2

Good

11,047 reviews

Southwest

8.0

Very good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Frontier

5.8

Fair

3,091 reviews

Southwest

8.0

Very good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Related info for your journey

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 9 inbound flights from Riverside per day from 6 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?
Flights from Riverside to Lambert-St Louis have been viewed 24 times in the past calendar month.
How long is the flight from Riverside to St. Louis?
For as low as $239, Delta can have you in St. Louis from Riverside in 5h 25m. The distance between Riverside and St. Louis is about 1588 mi. This flight may include one or multiple stops.
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 $67. Users have also found prices from $130 and $142 on Delta and American 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 (86%), American Airlines (86%), Qatar Airways( 80%).
What are the cheapest flights from Riverside to St. Louis?
Looking at all options, your cheapest flight can be booked for $118. While the most popular route (Los Angeles - Lambert-St Louis) can be booked for $152 on average, our data indicates $322 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, September is the cheapest month in which you can book a flight from Riverside to St. Louis (average of $71). Flying from Riverside to St. Louis in March is currently the most expensive (average of $220). 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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Other flights to St. Louis

Top 6 airlines flying from Riverside to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$128	Average$228	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$248	Average$397	FlexibilityNo cancel fee	On-timeN/A
Alaska Airlines	Cheapest$257	Average$505	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$278	Average$412	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$284	Average$432	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$292	Average$463	FlexibilityNo cancel fee	On-time69%

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$142+ 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 12/26. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Riverside to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Riverside to Lambert-St Louis are usually found in October or April, booked 51 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap flight deals from Riverside to St. Louis

Cheapest flights from Riverside to St. LouisExplore 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 4, 2025.

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 4, 2025.

Find flight deals from Riverside to St. Louis

Keep the following information in mind while searching for Riverside to St. Louis flight deals. Data was last updated December 4, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

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.

Cheapflights Insights

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

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 November 28, 2025.

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

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 4, 2025.

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 November 29, 2025.

Weekly flight availability from Riverside to St. Louis

Reviews of airlines servicing St. Louis

See what other customers who have flown with Southwest, Delta, and United Airlines from Riverside to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

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

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

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

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Alternative routes for Riverside to St. Louis

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Top 6 airlines flying from Riverside to St. Louis

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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 4, 2025.