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Riverside

$53+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LAX
Jan 22 — Jan 291
Thu 1/22
Thu 1/29
1 adult, Economy
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Find cheap flights from Portland to Riverside with Cheapflights

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Cheapflights Tip: The best prices from Portland to Riverside are usually found in January or February, booked 90 days in advance, depart on a Friday or Thursday and return on a Saturday

Cheap 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 December 23, 2025.

This Super.com deal was found by Cheapflights users on 12/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:39 pmPDX - LAX
Nonstop2h 24mFrontier
Thu 1/19:07 amLAX - PDX
Nonstop2h 30mFrontier
Deal found 12/22$191
This CheapOair deal was found by Cheapflights users on 12/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:47 pmPDX - LAX
1 stop18h 55mFrontier
Thu 1/19:07 amLAX - PDX
Nonstop2h 30mFrontier
Deal found 12/22$201
This United Airlines deal was found by Cheapflights users on 12/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:45 pmPDX - LAX
1 stop4h 18mUnited Airlines
Fri 1/235:20 pmLAX - PDX
1 stop5h 46mUnited Airlines
Deal found 12/21$208
This CheapOair deal was found by Cheapflights users on 12/22. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/252:29 pmPDX - LAX
1 stop6h 02mFrontier
Sun 1/118:50 amLAX - PDX
Nonstop2h 49mFrontier
Deal found 12/22$216
This Frontier deal was found by Cheapflights users on 12/22. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/235:39 pmPDX - LAX
Nonstop2h 24mFrontier
Thu 1/19:07 amLAX - PDX
Nonstop2h 30mFrontier
Deal found 12/22$239
This Alaska Airlines deal was found by Cheapflights users on 12/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:26 pmPDX - LAX
Nonstop2h 37mAlaska Airlines
Thu 1/17:24 pmLAX - PDX
Nonstop2h 37mAlaska Airlines
Deal found 12/22$252
This Kiwi.com deal was found by Cheapflights users on 12/21. 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.
Tue 12/305:39 pmPDX - LAX
Nonstop2h 24mMultiple Airlines
Wed 12/317:55 pmLAX - PDX
Nonstop2h 29mMultiple Airlines
Deal found 12/21$259

Find flight deals from Portland to Riverside

Keep the following information in mind while searching for Portland to Riverside flight deals. Data was last updated December 23, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$127
(Super.com)

One-way from

$53
(Super.com)

Popular in

December

Cheapest in

January

Average price

$249
Provider with most accurate pricing for Portland-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Los Angeles flights.
Search Deals
From Portland to Riverside
Search Deals
One-way flight from Portland to Riverside
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
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 December 23, 2025.
Use the filters below to find and compare flights from Portland to Riverside that are best for you.

Fly from

Portland

Fly to

Riverside

Route

Depart

Return

Price

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Wed 1/21

1:02 pm-3:25 pm

Nonstop2h 23m

Los Angeles

Wed 1/28

7:00 am-9:25 am

Nonstop2h 25m

$139

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Tue 2/3

1:02 pm-3:25 pm

Nonstop2h 23m

Los Angeles

Sat 2/7

7:00 am-9:26 am

Nonstop2h 26m

$139

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Mon 1/12

10:29 am-12:54 pm

Nonstop2h 25m

Los Angeles

Tue 1/13

2:56 pm-10:46 pm

1 stop7h 50m

$142

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Tue 2/10

11:30 am-4:15 pm

1 stop4h 45m

Los Angeles

Sat 2/14

1:35 pm-8:30 pm

1 stop6h 55m

$159

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Sat 1/24

5:50 pm-8:15 pm

Nonstop2h 25m

Los Angeles

Sun 2/1

8:00 am-8:47 pm

1 stop12h 47m

$162

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Tue 2/3

5:50 pm-8:15 pm

Nonstop2h 25m

Los Angeles

Thu 2/12

6:00 pm-8:49 am

1 stop14h 49m

$162

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Thu 1/22

1:38 pm-9:36 pm

1 stop7h 58m

Los Angeles

Sat 1/24

2:15 pm-4:49 pm

Nonstop2h 34m

$162

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Tue 2/3

9:10 am-1:41 pm

1 stop4h 31m

Los Angeles

Sat 2/7

2:15 pm-4:49 pm

Nonstop2h 34m

$162

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Sat 2/7

5:30 pm-7:55 pm

Nonstop2h 25m

Los Angeles

Sun 2/15

6:50 am-9:15 am

Nonstop2h 25m

$168

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Wed 2/11

10:30 am-12:56 pm

Nonstop2h 26m

Los Angeles

Sun 2/15

6:50 am-9:15 am

Nonstop2h 25m

$168

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 22 results
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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.

Cheapflights Insights

Everything you need to know about your flight from Portland to Riverside

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 December 19, 2025.

To ensure you get the cheapest price possible for a flight from Portland to Riverside, you should look to book at least 90 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 $48). Flying from Portland to Riverside in November is currently the most expensive (average of $107). 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 December 23, 2025.

It’s typically best to fly out from Portland to Riverside in the afternoon. Doing so could potentially save you 6% on the flight price compared to flying in the morning, which is usually more expensive.

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 December 20, 2025.

Travelers seeking maximum savings on their Portland to Riverside flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Saturday 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 December 23, 2025.

The most flights from PDX to R1V are scheduled on a Saturday (73 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (44 on average).

How much does it cost to fly round-trip from Portland 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 December 23, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and Hawaiian Airlines from Portland 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.
Alaska Airlines
8.0
Very good
11,517 reviews

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Alaska Airlines
8.0
Very good
11,517 reviews
Alaska Airlines
8.0
Very good
11,517 reviews

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Delta
7.9
Good
8,015 reviews
Alaska Airlines
8.0
Very good
11,517 reviews

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Hawaiian Airlines
7.8
Good
2,820 reviews
Alaska Airlines
8.0
Very good
11,517 reviews

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
American Airlines
7.2
Good
11,050 reviews
Alaska Airlines
8.0
Very good
11,517 reviews

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.
Frontier
5.8
Fair
3,073 reviews
Alaska Airlines
8.0
Very good
11,517 reviews

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

PDX - BNA

My family especially liked the leg room and comfortable seats.

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 62 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 212 times in the past calendar month.

  • How long is the flight from Portland to Riverside?

    There are many flights that can get you from Portland to Riverside in 2h 23m. Fly via Delta, Southwest, or Alaska Airlines to get the fastest option. There are 834 mi between Portland and Riverside. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $37. Users have also found prices from $43 and $78 on Spirit Airlines and American 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: Horizon Air (100%), Air France (95%), Aeromexico (95%).

  • What are the cheapest flights from Portland to Riverside?

    While on average a flight from Portland to Riverside is generally $659, our data shows the cheapest flight currently is $49. When looking at the most popular route, (Portland - Los Angeles), you can expect to pay $117 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 $48). Flying from Portland to Riverside in November is currently the most expensive (average of $107). 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 Portland to Riverside

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Top 8 airlines flying from Portland to Riverside

Discover the top 8 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 December 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$49Average$147FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$62Average$171FlexibilityNo cancel feeOn-time65%
DeltaCheapest$83Average$262FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$88Average$268FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$148Average$272FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$153Average$294FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$158Average$301FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$176Average$344FlexibilityNo cancel feeOn-time69%

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