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$71+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — LAX
Jul 7 — Jul 141
Mon 7/7
Mon 7/14
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to Riverside are usually found in September or October, booked 81 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Philadelphia to Riverside

Keep the following information in mind while searching for Philadelphia to Riverside flight deals. Data was last updated July 2, 2025.

Round-trip from

$141
(Priceline)

One-way from

$71
(Priceline)

Popular in

December

Cheapest in

September

Average price

$338
From Philadelphia to Riverside
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One-way flight from Philadelphia to Riverside
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Highest demand for flights based on searches. 5% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 July 2, 2025.

This Priceline deal was found by Cheapflights users on 6/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/215:40 amPHL - LAX
1 stop9h 27mFrontier
Sun 8/249:31 pmLAX - PHL
1 stop10h 40mFrontier
Deal found 6/30$141
This Priceline deal was found by Cheapflights users on 6/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/27:00 amPHL - LAX
1 stop11h 31mMultiple Airlines
Thu 8/77:45 pmLAX - PHL
1 stop7h 04mMultiple Airlines
Deal found 6/30$151

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 July 2, 2025.
Use the filters below to find and compare flights from Philadelphia to Riverside that are best for you.

Fly from

Philadelphia

Fly to

Riverside

Route

Depart

Return

Price

PhiladelphiaLos Angeles

PHL - LAX

PHLLAX

Philadelphia

Thu 8/21

5:40 am-12:07 pm

1 stop9h 27m

Los Angeles

Sun 8/24

9:31 pm-11:11 am

1 stop10h 40m

$141

PhiladelphiaLos Angeles

PHL - LAX

PHLLAX

Philadelphia

Sat 8/2

7:00 am-3:31 pm

1 stop11h 31m

Los Angeles

Thu 8/7

7:45 pm-5:49 am

1 stop7h 04m

$151

PhiladelphiaLos Angeles

PHL - LAX

PHLLAX

Philadelphia

Tue 8/5

9:45 am-5:08 pm

1 stop10h 23m

$71

PhiladelphiaLos Angeles

PHL - LAX

PHLLAX

Philadelphia

Wed 9/3

7:07 pm-11:09 pm

1 stop7h 02m

$76

PhiladelphiaLos Angeles

PHL - LAX

PHLLAX

Philadelphia

Thu 8/7

6:00 am-3:31 pm

1 stop12h 31m

$100

PhiladelphiaLos Angeles

PHL - LAX

PHLLAX

Philadelphia

Wed 7/30

10:05 am-5:10 pm

1 stop10h 05m

$109

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

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 June 27, 2025.

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 81 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 $246). Flying from Philadelphia to Riverside in March is currently the most expensive (average of $326). 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 July 2, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Philadelphia to Riverside as you normally would.

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 June 29, 2025.

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

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 July 2, 2025.
Read reviews from past customers who have flown Southwest, Spirit Airlines, and Frontier 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
4,272 reviews

Entertainment

7.6

Food

7.0

Boarding

8.2

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.0
Very good
4,272 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Food

7.0

Boarding

8.2

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Spirit Airlines
6.3
Okay
8,103 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Food

7.0

Boarding

8.2

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Frontier
5.9
Fair
3,290 reviews
Southwest
8.0
Very good
4,272 reviews

Entertainment

7.6

Food

7.0

Boarding

8.2

Overall

8.0

Crew

8.6

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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 19 outbound flights to Riverside per day from 9 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 122 times in the past calendar month.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $71. Users have also found prices from $76 and $109 on Spirit Airlines 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 Spirit Airlines (87%), Japan Airlines (84%) or Fiji Airways (83%) 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 $80. While the most popular route (Philadelphia - Los Angeles) can be booked for $141 on average our data indicates $1,507 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 $246). Flying from Philadelphia to Riverside in March is currently the most expensive (average of $326). 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 Philadelphia to Riverside

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Top 9 airlines flying from Philadelphia to Riverside

Discover the top 9 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 July 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$89Average$217FlexibilityNo cancel feeOn-time65%
FrontierCheapest$100Average$260FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$135Average$327FlexibilityNo cancel feeOn-time62%
DeltaCheapest$138Average$414FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$191Average$426FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$210Average$224FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$253Average$482FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$302Average$482FlexibilityNo cancel feeOn-time69%
Sun Country AirCheapest$305Average$402FlexibilityNo cancel feeOn-time83%

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