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$39+ Cheap flights from Portland (PDX) 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 4/12. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LAX
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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The best prices from Portland to Riverside are usually found in January or February, booked 57 days in advance, depart on a Thursday or Friday and return on a Tuesday

Cheap flight deals from Portland to Riverside

Keep the following information in mind while searching for Portland to Riverside flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$67
(Priceline)

One-way from

$39
(Frontier)

Popular in

March

Cheapest in

January

Average price

$168
Provider with most accurate pricing for Portland-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Portland-Los Angeles flights.
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From Portland to Riverside
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One-way flight from Portland to Riverside
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Highest demand for flights based on searches. 3% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Portland to Riverside

Cheapest flights from Portland to Riverside
Explore the most affordable flight options available from Portland to Riverside. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Priceline deal was found by Cheapflights users on 2/19. 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.
Wed 3/122:33 pmPDX - LAX
1 stop4h 26mMultiple Airlines
Thu 3/135:52 pmLAX - PDX
Nonstop2h 36mMultiple Airlines
Deal found 2/19$67
This Frontier deal was found by Cheapflights users on 2/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/89:40 amPDX - LAX
Nonstop2h 24mFrontier
Sat 3/155:52 pmLAX - PDX
Nonstop2h 36mFrontier
Deal found 2/18$68
This Cheapflightsfares deal was found by Cheapflights users on 2/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/112:33 pmPDX - LAX
1 stop6h 36mSpirit Airlines
Tue 3/255:52 amLAX - PDX
1 stop4h 28mSpirit Airlines
Deal found 2/19$70
This Alaska Airlines deal was found by Cheapflights users on 2/19. 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.
Sun 5/46:00 amPDX - LAX
Nonstop2h 25mAlaska Airlines
Wed 5/76:10 pmLAX - PDX
Nonstop2h 27mAlaska Airlines
Deal found 2/19$147
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/167:14 pmPDX - LAX
1 stop4h 34mDelta
Mon 5/196:35 amLAX - PDX
Nonstop2h 26mDelta
Deal found 2/20$167

Find flights from Portland to Riverside within your budget

Customize your flight search to find flights from Portland 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 February 20, 2025.

Fly from

Portland

Fly to

Riverside

Route

Depart

Return

Price

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Wed 3/12

2:33 pm-6:59 pm

1 stop4h 26m

Los Angeles

Thu 3/13

5:52 pm-8:28 pm

Nonstop2h 36m

$67

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Sat 3/8

9:40 am-12:04 pm

Nonstop2h 24m

Los Angeles

Sat 3/15

5:52 pm-8:28 pm

Nonstop2h 36m

$68

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Tue 3/11

2:33 pm-9:09 pm

1 stop6h 36m

Los Angeles

Tue 3/25

5:52 am-10:20 am

1 stop4h 28m

$70

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Wed 3/12

8:00 am-10:30 am

Nonstop2h 30m

Los Angeles

Wed 3/12

11:30 am-2:05 pm

Nonstop2h 35m

$131

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Fri 5/16

7:14 pm-11:48 pm

1 stop4h 34m

Los Angeles

Mon 5/19

6:35 am-9:01 am

Nonstop2h 26m

$167

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Wed 3/5

8:00 am-10:30 am

Nonstop2h 30m

Los Angeles

Wed 3/5

11:30 am-2:05 pm

Nonstop2h 35m

$201

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Sat 4/12

9:40 am-12:08 pm

Nonstop2h 28m

$39

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Wed 3/26

11:15 am-3:50 pm

1 stop4h 35m

$40

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Tue 5/6

9:34 pm-11:59 pm

Nonstop2h 25m

$69

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Tue 3/11

1:33 pm-6:40 pm

1 stop5h 07m

$78

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 14 results
1
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Best time to book a flight from Portland to Riverside

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

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

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

Use this chart to determine the optimal time to book a round-trip flight from Portland to Riverside. Price data was last updated on February 14, 2025.

To ensure you get the cheapest price possible for a flight from Portland to Riverside, you should look to book at least 57 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 Portland to Riverside?

Currently, January is the cheapest month in which you can book a flight from Portland to Riverside (average of $246). Flying from Portland to Riverside in March is currently the most expensive (average of $344). 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 PDX to R1V?

Find hourly flight availability from Portland 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 February 20, 2025.

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

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

Use this chart to determine the cheapest time to fly round-trip from Portland to Riverside. Price data was last updated on February 16, 2025.

Travelers seeking maximum savings on their Portland to Riverside flight should consider departing on Thursday afternoons 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 Portland to Riverside

Explore weekly flight availability from Portland 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 February 20, 2025.

The most flights from PDX to R1V are scheduled on a Thursday (83 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (28 on average).

Rainfall in Riverside by month

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

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.

Temperature in Riverside by month

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

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).

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 February 20, 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines and Delta from Portland to Riverside to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very good
9,692 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Food

7.1

Overall

8.1

Comfort

8.1

Crew

8.7

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Related info for your journey

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

    If you book a flight to Riverside from Portland, you will be flying from Portland, which is the city’s only airport. Portland (PDX) is located 6.0 mi from the center of Portland. There are 49 flights from Portland to Riverside per day from 8 different airlines.

  • How popular is this Portland to Riverside flight route?

    Flights from Portland to Riverside have been viewed 216 times in the past calendar month.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $39. Users have also found prices from $40 and $69 on Spirit Airlines and Hawaiian Airlines, respectively.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Portland to Riverside on time: SAUDIA (100%), EL AL (97%), China Eastern (95%).

  • What are the cheapest flights from Portland to Riverside?

    While on average a flight from Portland to Riverside is generally $827, our data shows the cheapest flight currently is $37. When looking at the most popular route, (Portland - Los Angeles), you can expect to pay $57 for that flight.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Portland to Riverside (average of $246). Flying from Portland to Riverside in March is currently the most expensive (average of $344). 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.

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Top 7 airlines flying from Portland to Riverside

Discover the top 7 airlines that operate flights from Portland 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$39Average$129FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$54Average$128FlexibilityNo cancel feeOn-time65%
DeltaCheapest$137Average$312FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$138Average$264FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$150Average$319FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$171Average$359FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$192Average$350FlexibilityNo cancel feeOn-time63%
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