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$78+ Cheap flights from Riverside, CA to Portland (PDX)

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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — PDX
Sep 2 — Sep 91
Tue 9/2
Tue 9/9
1 adult, Economy
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Cheapflights Tip: The best prices from Riverside to Portland are usually found in January or February, booked 59 days in advance, depart on a Saturday or Thursday and return on a Thursday

Cheap flight deals from Riverside to Portland

Keep the following information in mind while searching for Riverside to Portland flight deals. Data was last updated August 28, 2025.

Round-trip from

$117
(Cheapflightsfares)

One-way from

$78
(Frontier)

Popular in

November

Cheapest in

January

Average price

$215
From Riverside to Portland
Search Deals
One-way flight from Riverside to Portland
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($12 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 August 2025
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Find flight deals from Riverside to Portland

Cheapest flights from Riverside to Portland
Explore the most affordable flight options available from Riverside to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 28, 2025.

This Frontier deal was found by Cheapflights users on 8/28. 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.
Fri 10/39:44 amLAX - PDX
Nonstop2h 24mFrontier
Mon 10/66:05 amPDX - LAX
1 stop11h 13mFrontier
Deal found 8/28$117
This Frontier deal was found by Cheapflights users on 8/27. 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 9/2010:14 amLAX - PDX
Nonstop2h 24mFrontier
Thu 10/92:18 pmPDX - LAX
Nonstop2h 26mFrontier
Deal found 8/27$118
This Mytrip deal was found by Cheapflights users on 8/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2010:14 amLAX - PDX
Nonstop2h 24mFrontier
Mon 9/221:08 pmPDX - LAX
Nonstop2h 28mFrontier
Deal found 8/27$119
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 9/91:37 pmLAX - PDX
1 stop8h 57mFrontier
Sat 9/131:38 pmPDX - LAX
Nonstop2h 28mFrontier
Deal found 8/27$120
This CheapOair deal was found by Cheapflights users on 8/27. 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.
Fri 9/269:44 amLAX - PDX
Nonstop2h 24mFrontier
Fri 10/36:05 amPDX - LAX
1 stop14h 03mFrontier
Deal found 8/27$121
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 9/122:03 pmLAX - PDX
1 stop10h 09mMultiple Airlines
Tue 9/1612:07 pmPDX - LAX
1 stop6h 48mMultiple Airlines
Deal found 8/27$122
This Frontier deal was found by Cheapflights users on 8/26. 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 10/1610:46 amLAX - PDX
Nonstop2h 20mFrontier
Sat 10/252:18 pmPDX - LAX
Nonstop2h 26mFrontier
Deal found 8/26$124
This FlightHub deal was found by Cheapflights users on 8/27. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/219:44 amLAX - PDX
Nonstop2h 24mFrontier
Thu 9/251:08 pmPDX - LAX
Nonstop2h 28mFrontier
Deal found 8/27$125
This Cheapflightsfares deal was found by Cheapflights users on 8/27. 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.
Fri 10/39:44 amLAX - PDX
Nonstop2h 24mFrontier
Sun 10/51:08 pmPDX - LAX
Nonstop2h 28mFrontier
Deal found 8/27$126
This Frontier deal was found by Cheapflights users on 8/26. 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 10/1610:46 amLAX - PDX
Nonstop2h 20mFrontier
Thu 10/2312:43 pmPDX - LAX
1 stop11h 42mFrontier
Deal found 8/26$127
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 9/166:15 amLAX - PDX
1 stop4h 56mMultiple Airlines
Thu 9/181:08 pmPDX - LAX
Nonstop2h 28mMultiple Airlines
Deal found 8/27$129

Cheapflights Fare Finder

 
Customize your flight search to find flights from Riverside to Portland 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 August 28, 2025.
Use the filters below to find and compare flights from Riverside to Portland that are best for you.

Fly from

Riverside

Fly to

Portland

Route

Depart

Return

Price

Los AngelesPortland

LAX - PDX

LAXPDX

Los Angeles

Thu 9/11

9:44 am-12:08 pm

Nonstop2h 24m

Portland

Sat 9/13

1:38 pm-4:06 pm

Nonstop2h 28m

$117

Los AngelesPortland

LAX - PDX

LAXPDX

Los Angeles

Fri 9/5

9:44 am-12:08 pm

Nonstop2h 24m

Portland

Sat 9/6

1:38 pm-4:06 pm

Nonstop2h 28m

$117

Los AngelesPortland

LAX - PDX

LAXPDX

Los Angeles

Fri 10/3

9:44 am-12:08 pm

Nonstop2h 24m

Portland

Mon 10/6

6:05 am-5:18 pm

1 stop11h 13m

$117

Los AngelesPortland

LAX - PDX

LAXPDX

Los Angeles

Sat 9/20

10:14 am-12:38 pm

Nonstop2h 24m

Portland

Mon 9/22

1:08 pm-3:36 pm

Nonstop2h 28m

$117

Los AngelesPortland

LAX - PDX

LAXPDX

Los Angeles

Thu 9/4

9:44 am-12:08 pm

Nonstop2h 24m

Portland

Fri 9/5

1:08 pm-3:36 pm

Nonstop2h 28m

$118

Los AngelesPortland

LAX - PDX

LAXPDX

Los Angeles

Thu 9/18

9:44 am-12:08 pm

Nonstop2h 24m

Portland

Thu 9/18

1:08 pm-3:36 pm

Nonstop2h 28m

$118

Los AngelesPortland

LAX - PDX

LAXPDX

Los Angeles

Sat 9/20

10:14 am-12:38 pm

Nonstop2h 24m

Portland

Thu 10/9

2:18 pm-4:44 pm

Nonstop2h 26m

$118

Los AngelesPortland

LAX - PDX

LAXPDX

Los Angeles

Sat 9/13

10:14 am-12:38 pm

Nonstop2h 24m

Portland

Mon 9/15

1:08 pm-3:36 pm

Nonstop2h 28m

$118

Los AngelesPortland

LAX - PDX

LAXPDX

Los Angeles

Thu 10/2

2:03 pm-12:12 am

1 stop10h 09m

Portland

Sat 10/11

2:18 pm-4:44 pm

Nonstop2h 26m

$121

Los AngelesPortland

LAX - PDX

LAXPDX

Los Angeles

Sat 11/1

9:51 am-12:23 pm

Nonstop2h 32m

Portland

Sat 11/8

12:52 pm-12:25 am

1 stop11h 33m

$121

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/26

Showing 1-10 of 19 results
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Best time to book a flight from Riverside to Portland

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

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

Use this chart to determine the optimal time to book a round-trip flight from Riverside to Portland. Price data was last updated on August 22, 2025.

Booking 59 days in advance of your planned departure date is, on average, the best time to get cheap flights from Riverside to Portland. 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 Portland?

Currently, November is the cheapest month in which you can book a flight from Riverside to Portland (average of $277). Flying from Riverside to Portland in March is currently the most expensive (average of $368). 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 PDX?

Find hourly flight availability from Riverside to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 28, 2025.

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

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

Use this chart to determine the cheapest time to fly round-trip from Riverside to Portland. Price data was last updated on August 24, 2025.

Travelers seeking maximum savings on their Riverside to Portland flight should consider departing on Saturday at noon 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 Riverside to Portland

Explore weekly flight availability from Riverside to Portland. 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 August 28, 2025.

The most flights from R1V to PDX are scheduled on a Thursday (75 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (32 on average).

Reviews of airlines servicing Portland

Get insights into the airlines that provide service to Portland. 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 Portland. Reviews last updated August 28, 2025.
Read through reviews of airlines operating flights from Riverside to Portland, such as Alaska Airlines, Delta, and Hawaiian Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,977 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,690 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Spirit Airlines
6.3
Okay
8,028 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Frontier
5.8
Fair
3,204 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Food

7.1

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

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

    For a flight from Riverside to Portland, you will be flying into Portland. Portland (PDX) is just 6.0 mi from the center of the city. Portland is the only Portland airport and it handles 46 inbound flights from Riverside per day. 8 airlines have flights to Portland from Riverside on a regular basis.

  • How popular is this Riverside to Portland flight route?

    This flight path from Riverside to Portland was viewed by 127 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Riverside to Portland?

    Departing from Riverside to Portland will take you 2h 24m. There are 834 mi between Riverside and Portland. All flights are typically nonstop.

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

    Consider KLM (90%), Aeromexico (86%) or Korean Air (86%) when booking your flight. These represent the most reliable airlines when flying from Riverside to Portland.

  • What are the cheapest flights from Riverside to Portland?

    On average you can expect to pay $558 for a flight from Riverside to Portland. The cheapest flight overall is $84 while the most popular route, (Los Angeles - Portland) is currently priced at $97.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Riverside to Portland (average of $277). Flying from Riverside to Portland in March is currently the most expensive (average of $368). 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

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Vancouver
Seaside
Beaverton
Clackamas
McMinnville
Lake Oswego
Hillsboro
Cannon Beach
Long Beach
Longview
Tigard
Depoe Bay
Stevenson
Wilsonville
Pacific City
Troutdale
Tillamook
Gresham
Lincoln City
Silverton

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Riverside to Portland

See prices for flight routes from nearby airports that may be better suited for you.
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Santa Ana to Eugene flights
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Fresno to Boise flights

Top 8 airlines flying from Riverside to Portland

Discover the top 8 airlines that operate flights from Riverside to Portland. 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 August 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$30Average$130FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$45Average$126FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$89Average$263FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$113Average$262FlexibilityNo cancel feeOn-time75%
DeltaCheapest$118Average$252FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$138Average$269FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$143Average$353FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$165Average$380FlexibilityNo cancel feeOn-time71%

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