HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Riverside

$100+ Cheap flights from Philadelphia (PHL) 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LAX
Apr 24 — May 11
Fri 4/24
Fri 5/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Philadelphia 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 Philadelphia to Riverside are usually found in July or June, booked 61 days in advance, depart on a Thursday or Wednesday and return on a Saturday

Cheap flight deals from Philadelphia to Riverside

Cheapest flights from Philadelphia to Riverside
Explore the most affordable flight options available from Philadelphia to Riverside. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2026.

This Frontier deal was found by Cheapflights users on 3/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/410:40 am
PHL
-
LAX
1 stop11h 52m
Frontier
Fri 6/128:56 pm
LAX
-
PHL
1 stop11h 51m
Frontier
Deal found 3/21$270
This Kiwi.com deal was found by Cheapflights users on 3/21. 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.
Sat 4/48:36 pm
PHL
-
LAX
2 stops37h 45m
Frontier
Tue 4/78:58 pm
LAX
-
PHL
1 stop29h 33m
Frontier
Deal found 3/21$272
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/103:01 pm
PHL
-
LAX
2 stops21h 05m
Multiple Airlines
Sat 4/181:52 pm
LAX
-
PHL
1 stop8h 02m
Multiple Airlines
Deal found 3/22$273
This Frontier deal was found by Cheapflights users on 3/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/210:40 am
PHL
-
LAX
1 stop11h 52m
Frontier
Mon 6/812:59 am
LAX
-
PHL
Nonstop5h 17m
Frontier
Deal found 3/23$274
This Kiwi.com deal was found by Cheapflights users on 3/23. 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.
Thu 5/79:16 pm
PHL
-
LAX
2 stops27h 09m
Frontier
Fri 5/157:10 pm
LAX
-
PHL
1 stop13h 47m
Frontier
Deal found 3/23$275
This Kiwi.com deal was found by Cheapflights users on 3/23. 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.
Sat 4/2510:24 pm
PHL
-
LAX
2 stops36h 54m
Frontier
Thu 4/301:52 pm
LAX
-
PHL
1 stop8h 02m
Frontier
Deal found 3/23$276
This Kiwi.com deal was found by Cheapflights users on 3/23. 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 6/1011:35 am
PHL
-
LAX
1 stop9h 14m
Frontier
Tue 6/309:43 am
LAX
-
PHL
1 stop23h 04m
Frontier
Deal found 3/23$277
This Kiwi.com deal was found by Cheapflights users on 3/23. 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.
Sat 5/307:50 pm
PHL
-
LAX
Nonstop5h 57m
Frontier
Mon 6/811:21 pm
LAX
-
PHL
1 stop12h 15m
Frontier
Deal found 3/23$278
This Frontier deal was found by Cheapflights users on 3/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/308:35 pm
PHL
-
LAX
1 stop15h 00m
Frontier
Sun 5/3112:49 am
LAX
-
PHL
Nonstop5h 21m
Frontier
Deal found 3/23$279
This Expedia deal was found by Cheapflights users on 3/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/48:36 pm
PHL
-
LAX
1 stop17h 24m
Frontier
Fri 4/106:15 am
LAX
-
PHL
1 stop20h 16m
Frontier
Deal found 3/20$280
This CheapOair deal was found by Cheapflights users on 3/24. 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 6/48:35 pm
PHL
-
LAX
1 stop30h 41m
Frontier
Tue 6/912:14 pm
LAX
-
PHL
1 stop15h 06m
Frontier
Deal found 3/24$281
This CheapOair deal was found by Cheapflights users on 3/24. 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.
Wed 5/277:50 pm
PHL
-
LAX
Nonstop5h 57m
Frontier
Thu 6/46:30 am
LAX
-
PHL
1 stop20h 07m
Frontier
Deal found 3/24$282

Find flight deals from Philadelphia to Riverside

Keep the following information in mind while searching for Philadelphia to Riverside flight deals. Data was last updated March 25, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$270
(Frontier)

One-way from

$100
(eDestinos)

Popular in

December

Cheapest in

July

Average price

$484
Provider with most accurate pricing for Philadelphia-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Los Angeles flights.
Search Deals
From Philadelphia to Riverside
Search Deals
One-way flight from Philadelphia to Riverside
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($109 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Riverside 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 March 25, 2026.
Use the filters below to find and compare flights from Philadelphia to Riverside that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

PhiladelphiaLos Angeles

PHL - LAX

PHLLAX

Philadelphia

Wed 6/3

7:50 pm-10:47 pm

Nonstop5h 57m

Los Angeles

Sat 6/6

12:49 am-9:10 am

Nonstop5h 21m

$431

PhiladelphiaLos Angeles

PHL - LAX

PHLLAX

Philadelphia

Tue 5/5

6:20 am-1:00 pm

2 stops9h 40m

Los Angeles

Tue 5/26

7:30 am-10:00 pm

2 stops11h 30m

$431

PhiladelphiaLos Angeles

PHL - LAX

PHLLAX

Philadelphia

Sat 5/30

5:35 am-12:10 pm

2 stops9h 35m

Los Angeles

Wed 6/10

6:00 am-6:40 pm

2 stops9h 40m

$462

PhiladelphiaLos Angeles

PHL - LAX

PHLLAX

Philadelphia

Sat 8/1

5:00 am-12:05 pm

2 stops10h 05m

Los Angeles

Fri 8/7

5:45 am-5:25 pm

2 stops8h 40m

$476

PhiladelphiaLos Angeles

PHL - LAX

PHLLAX

Philadelphia

Fri 5/15

5:40 am-12:35 pm

2 stops9h 55m

Los Angeles

Tue 5/19

9:35 am-10:40 pm

2 stops10h 05m

$476

PhiladelphiaLos Angeles

PHL - LAX

PHLLAX

Philadelphia

Tue 6/23

4:35 pm-10:50 pm

2 stops9h 15m

Los Angeles

Tue 6/30

5:35 am-6:40 pm

2 stops10h 05m

$507

PhiladelphiaLos Angeles

PHL - LAX

PHLLAX

Philadelphia

Wed 8/5

2:45 pm-9:10 pm

2 stops9h 25m

Los Angeles

Sun 8/9

7:25 am-8:10 pm

2 stops9h 45m

$508

PhiladelphiaLos Angeles

PHL - LAX

PHLLAX

Philadelphia

Tue 7/21

4:35 pm-11:00 pm

2 stops9h 25m

Los Angeles

Fri 7/31

5:55 am-6:20 pm

2 stops9h 25m

$508

PhiladelphiaLos Angeles

PHL - LAX

PHLLAX

Philadelphia

Thu 9/10

6:45 am-6:29 pm

2 stops14h 44m

Los Angeles

Mon 9/14

5:15 pm-5:27 am

1 stop9h 12m

$518

PhiladelphiaLos Angeles

PHL - LAX

PHLLAX

Philadelphia

Wed 6/10

4:35 pm-10:50 pm

2 stops9h 15m

Los Angeles

Sat 6/13

8:30 pm-10:50 am

2 stops11h 20m

$519

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/20

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Philadelphia to Riverside

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

How far ahead should I book a flight from Philadelphia to Riverside?

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to Riverside. Price data was last updated on March 13, 2026.

The price you pay for your flight from Philadelphia to Riverside may vary depending on when you book. For the best chance of a lower fare, look to book 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Philadelphia to Riverside?

Currently, January is the cheapest month in which you can book a flight from Philadelphia to Riverside (average of $113). Flying from Philadelphia to Riverside in March is currently the most expensive (average of $163). 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 PHL to R1V?

Find hourly flight availability from Philadelphia 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 March 25, 2026.

Unlike at noon, when flights are generally more expensive, you can save up to 27% on flights from Philadelphia to Riverside by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Philadelphia to Riverside?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Riverside. Price data was last updated on March 23, 2026.

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

Weekly flight availability from Philadelphia to Riverside

Explore weekly flight availability from Philadelphia to Riverside. 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 March 25, 2026.

The most flights from PHL to R1V are scheduled on a Monday (23 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).

How much does it cost to fly round-trip from Philadelphia to Riverside?

Reviews of airlines servicing Riverside

Get insights into the airlines that provide service to Riverside. 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 Riverside. Reviews last updated March 25, 2026.
Read reviews from past customers who have flown Southwest,JetBlue, andAmerican Airlines from Philadelphia to Riverside. 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.
Southwest
8.0
Very good
4,333 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,333 reviews
Southwest
8.0
Very good
4,333 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
JetBlue
7.2
Good
2,905 reviews
Southwest
8.0
Very good
4,333 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,494 reviews
Southwest
8.0
Very good
4,333 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Spirit Airlines
6.3
Okay
8,541 reviews
Southwest
8.0
Very good
4,333 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
3,017 reviews
Southwest
8.0
Very good
4,333 reviews

Crew

8.6

Comfort

8.0

Entertainment

7.5

Boarding

8.1

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from Philadelphia 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 Philadelphia to Riverside?

    Most people fly from Philadelphia (PHL) if they book a flight from Philadelphia to Riverside. On average, Philadelphia has 18 outbound flights to Riverside per day from 8 airlines. Philadelphia is conveniently located just 7.0 mi from Philadelphia’s city center.

  • How popular is this Philadelphia to Riverside flight route?

    Flights from Philadelphia to Riverside have been viewed 82 times in the past calendar month.

  • How long is the flight from Philadelphia to Riverside?

    There are many flights that can get you from Philadelphia to Riverside in 5h 57m. Fly via Frontier or Southwest to get the fastest option. Airlines will cover a distance of 2395 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Philadelphia to Riverside one-way?

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $58. Users have also found prices from $69 and $114 on Frontier and Southwest, respectively.

  • What are the most reliable airlines from Philadelphia to Riverside?

    No one likes to see their flight delayed. When booking a flight from Philadelphia to Riverside consider choosing Japan Airlines (85%), Qatar Airways (80%) or British Airways (80%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Philadelphia to Riverside?

    Looking at all options, your cheapest flight can be booked for $259. While the most popular route (Philadelphia - Los Angeles) can be booked for $185 on average, our data indicates $1,483 when flying from Philadelphia to Riverside.

  • Can I find deals for flights from Philadelphia to Riverside that include hotel bookings?

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

  • How can I find direct flights from Philadelphia to Riverside?

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

  • Can I find deals for business class flights from Philadelphia to Riverside?

    Yes. Cheapflights offers flight deals from Philadelphia 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 Philadelphia to Riverside?

    Currently, January is the cheapest month in which you can book a flight from Philadelphia to Riverside (average of $113). Flying from Philadelphia to Riverside in March is currently the most expensive (average of $163). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Philadelphia to Riverside

See prices for flight routes from nearby airports that may be better suited for you.
Newark to San Francisco flights
John F Kennedy Intl to San Francisco flights
John F Kennedy Intl to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
LaGuardia to San Francisco flights
Newark to Los Angeles flights
Newark to Las Vegas flights
Dulles Intl to Las Vegas flights
LaGuardia to Los Angeles flights
LaGuardia to Las Vegas flights
Dulles Intl to Los Angeles flights
Reagan-National to Las Vegas flights
Reagan-National to Los Angeles flights
Dulles Intl to San Francisco flights
Philadelphia to Las Vegas flights
Newark to San Diego flights
Reagan-National to San Francisco flights
Newark to Ontario flights
LaGuardia to Burbank flights
Philadelphia to Los Angeles flights
John F Kennedy Intl to San Diego flights
John F Kennedy Intl to Ontario flights
Newark to Burbank flights
Philadelphia to San Francisco flights
Newark to Santa Ana flights
Dulles Intl to San Diego flights
Newark to San Jose flights
John F Kennedy Intl to San Jose flights
LaGuardia to Ontario flights
Pittsburgh to Las Vegas flights
LaGuardia to San Diego flights
Newark to Oakland flights
John F Kennedy Intl to Oakland flights
John F Kennedy Intl to Santa Ana flights
Dulles Intl to Ontario flights
Reagan-National to San Diego flights
Philadelphia to San Diego flights
John F Kennedy Intl to Palm Springs flights
Pittsburgh to Los Angeles flights
Reagan-National to Ontario flights
Newark to Palm Springs flights
Philadelphia to Ontario flights
Newark to Sacramento flights
Dulles Intl to Sacramento flights
Dulles Intl to San Jose flights
John F Kennedy Intl to Reno flights
Pittsburgh to San Francisco flights
LaGuardia to San Jose flights

Top 8 airlines flying from Philadelphia to Riverside

Discover the top 8 airlines that operate flights from Philadelphia to Riverside. 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 March 25, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$98Average$244FlexibilityNo cancel feeOn-time65%
FrontierCheapest$119Average$277FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$196Average$470FlexibilityNo cancel feeOn-time63%
DeltaCheapest$204Average$414FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$210Average$268FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$222Average$451FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$238Average$454FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$265Average$459FlexibilityNo cancel feeOn-time62%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.