$38 Find Cheap Flights from Portland to Riverside

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Riverside departing on 6/21. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Cheap Flight Deals from Portland to Riverside (PDX-LAX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Riverside that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Portland to Riverside

KAYAK's recommended round-trip deals from the most popular airlines that fly from Portland to Riverside.
Discover the best prices for you by selecting your travel dates on KAYAK.
Frontier Logo
1:19 pm - 3:50 pmPDX-LAX
2h 31mnonstop
Frontier Logo
9:43 am - 12:07 pmLAX-PDX
2h 24mnonstop
$76Frontier
Find Deal
Sat, Aug 9 - Sat, Aug 16
Frontier Logo
1:19 pm - 3:51 pmPDX-LAX
2h 32mnonstop
Frontier Logo
9:43 am - 12:14 pmLAX-PDX
2h 31mnonstop
$77Frontier
Find Deal
Sat, Jun 21 - Sat, Jun 28
Frontier Logo
1:19 pm - 3:51 pmPDX-LAX
2h 32mnonstop
Frontier Logo
9:43 am - 12:14 pmLAX-PDX
2h 31mnonstop
$85Frontier
Find Deal
Thu, Jun 19 - Sat, Jun 21
Spirit Airlines Logo
5:40 pm - 6:51 amPDX-LAX
13h 11m1 stop
Spirit Airlines Logo
10:30 am - 4:45 pmLAX-PDX
6h 15m1 stop
$112Spirit Airlines
Find Deal
Wed, May 21 - Sat, May 24
Spirit Airlines Logo
5:40 pm - 6:51 amPDX-LAX
13h 11m1 stop
Spirit Airlines Logo
10:30 am - 4:45 pmLAX-PDX
6h 15m1 stop
$114Spirit Airlines
Find Deal
Wed, Jun 4 - Tue, Jun 10
Delta Logo
5:05 pm - 7:31 pmPDX-LAX
2h 26mnonstop
Delta Logo
8:20 pm - 10:41 pmLAX-PDX
2h 21mnonstop
$137Delta
Find Deal
Sat, May 31 - Tue, Jun 3
Delta Logo
6:11 am - 8:35 amPDX-LAX
2h 24mnonstop
Delta Logo
5:55 pm - 10:20 pmLAX-PDX
4h 25m1 stop
$147Delta
Find Deal
Wed, May 21 - Sat, May 24
Alaska Airlines Logo
1:25 pm - 6:45 pmPDX-LAX
5h 20m1 stop
Alaska Airlines Logo
9:33 pm - 11:59 pmLAX-PDX
2h 26mnonstop
$161Alaska Airlines
Find Deal
Mon, May 19 - Mon, May 19
Alaska Airlines Logo
5:30 pm - 9:29 pmPDX-LAX
3h 59m1 stop
Alaska Airlines Logo
7:00 am - 9:23 amLAX-PDX
2h 23mnonstop
$168Alaska Airlines
Find Deal
Sat, Jun 14 - Wed, Jun 18
American Airlines Logo
2:00 pm - 4:27 pmPDX-LAX
2h 27mnonstop
American Airlines Logo
7:02 pm - 9:30 pmLAX-PDX
2h 28mnonstop
$229American Airlines
Find Deal
Thu, Sep 25 - Mon, Sep 29
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Good to know

Low seasonFebruary
High seasonMarch
Cheapest flight$38
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from Portland to Los Angeles

When to book flights from Portland to Riverside

Are your dates flexible? Find out the best times to travel from Portland to Riverside based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from Portland to Riverside: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Portland to Riverside 
Verified travelerFlew with Alaska AirlinesPDX-LAXOct 2024
LAX is a large airport with long walking distances to exit in terminal 6.
Verified travelerFlew with Alaska AirlinesPDX-LAXJun 2024
Los Angeles airport has convenient entry & exit without long walks to & from the gates.
Verified travelerFlew with Alaska AirlinesPDX-LAXMay 2024
Very very pleasant. Very smooth. I was happy to get to my destination on time.

FAQs for booking flights from Portland to Riverside

  • Which airports will I be using when flying from Portland to Riverside?

    When flying out of Portland you’ll be using Portland. Riverside does not have its own airport so you’ll be flying into nearby Los Angeles airport, which is 59.3 mi away.

  • How long does a flight from Portland to Riverside take?

    Direct flights cover the 834 miles separating Portland and Riverside in about 2h 22m.

  • How many flights are there between Portland and Riverside?

    104 direct flights run between Portland and Riverside on a daily basis. On average, there are about 733 departures each week.

  • What’s the cheapest day of the week to fly between Portland and Riverside?

    Consider leaving on a Saturday and avoid Mondays if you are looking for the best rates. For your return to Portland, you’ll find the best rates on Saturdays and the most expensive ones on Thursdays.

  • How does KAYAK find such low prices on flights from Portland to Riverside?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Riverside.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Riverside?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Riverside from Portland is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Riverside?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Riverside with an airline and back to Portland with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Riverside?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Riverside from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from Portland to Riverside?

    In the last 72 hours, the cheapest one-way ticket between Portland and Riverside found on KAYAK was with Frontier for $38. Frontier offered a round-trip connection from $76 and Spirit Airlines from $112.

Top tips for finding cheap flights from Portland to Riverside

  • There is no airport in Riverside. Instead, you’ll be flying into Los Angeles Airport when flying between Portland and Riverside.
  • The cheapest flight from Portland to Riverside was found 57 days before departure, on average.
  • Book at least 2 weeks before departure in order to get a below-average price.
  • High season is considered to be October, November and December. The cheapest month to fly is January.

Top 5 airlines serving Portland to Riverside

Need help choosing which airline to fly with from Portland to Riverside? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9968 reviews
8.2Boarding
8.5Crew
7.1Food
7.1Entertainment
7.9Comfort
Airline reviews

OUr pilot was very good and also a good landing in a very gusting Phoenix. Most important.

8.0 ExcellentAnonymous, Apr 2025PDX - PHX
Read more Alaska Airlines reviews

OUr pilot was very good and also a good landing in a very gusting Phoenix. Most important.

Although both planes (flights) had mechanical issue delaying both of my flights, the crew members handled everything with ease. Both flights had the smoothest take off and landing. I opted to upgrade my seat to first class and really lucked out getting the seat at the very front of the plane. Awesome treat to myself. I really enjoyed my flight.

The staff from check-in counter to the flight crew were great. Flight was right on schedule. 10/10

Changed flight from San Fran to Seattle Then with a Delayed takeoff barely made my connection Waited over an hour for luggage 😜

Very comfortable - thanks. Only small criticism was the delay in disembarking caused by the passengers in the front two rows chatting to the cabin crew.

Probably one of the best flights I’ve had! From entering the airport, to boarding to landing.

Plane had a maintenance problem two hours into the flight and we had to turn around. Alaska was nice to put us up in the Hilton in LAX but the cost of food in the city was WAY higher than our vouchers and the hotel had no continental breakfast. We ended up spending over $100 on food for our family in addition to the vouchers.

Delays, delays, delays.... (and) Told no room for carry on after boarding B Group and told to drop off our carry on at door to be checked in instead. There was plenty of room left in the overheads above our seats right up to the end of boarding!!!!

Wonderful! The Alaska call center representative was really helpful. I accidently made a mistake of picking a flight option for another day. She was extremely helpful. My daughter had a nose bleed during the flight - the crew helped with an ice pack. I wish they had checked afterwards.

Arrive on time cause the TSA can be quite the project. Besides that your trip will be awesome.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Seats are much much more comfortable than United, which is what I usually fly

If I pay extra for "comfort+" I expect leg room where I can stretch my legs. I was seated with an attendant's seat blocking my feet. Knee space was fine but my feet had less room than the non-"comfort+" seats. Also, don't go cheap on food when you have flights of 3+ hours. It's insulting.

Only one side of the heafphone jack work. Crew was friendly and helpful.

Great. Flight departed early and arrived early. Deplaning and baggage claim ww were quick.

My seat had no padding, it was literally plywood with a plastic cover. I could not change seats on my 10 hour flight. My excitement for this trip helped me deal with the pain.

They separated our seats and moved us to the back of the plane. Hundreds of dollars and thousands of miles used and this was my platinum member experience.

AC barely worked on a 50 minute flight. It was very warm the whole flight. Flight was very bumpy and hard landing.

Got on the plane and then needed to deboard the plane because they didn’t have any pilots?

The flight was canceled two hours before departure, it took over five hours to rebook us on another flight.

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

Flight boarded from Gate 39 at OGG, the farthest gate in the terminal. There were no Hawaiian themed amenities for the flight. The first class service was mediocre at best; I received not special welcome or recognition as an executive platinum member of American Advantage program. The flight attendants were more concerned with their cell phones than saying "thank you" to the passengers as we disembarked. Fortunately, the flight arrived at LAX a few minutes early.

Bigger seats. Board back to front! Disembark front to back!

Extraordinary service in business class, and very good breakfast and snacks. A really lovely flight.

This flight didn’t happen because AA agents didn’t let us board the flight

Plane was pretty clean, staff was friendly and helpful, flight left about on time arrived early. Took a long time to board and get off the plane - carry on items didn't have enough room so people had to move all around to find places.

The service and food needs to improve to catch up with other international flights

Would have been good to have a meal since it was a 5.5 hour flight

We boarded after several delays due to mechanical failure and a gate change. The seat cushion in the exit row was very compressed and offered no cushion, making the four-hour journey reasonably uncomfortable. The WiFi worked for a few people, but for most, it did not, and you cannot get entertainment unless you can connect—American Airlines flights do not have seatback screens, and you must use your mobile phone.

AA is always pretty solid. Was on time all the way around today so can’t complain!

Worst airline ever! The guy weighing my bag had his foot on the metal plate and when I called him out on it, I got this stupid little smirk. La is a scam and so is Spirit Airlines. All the flight attendants looked like they hated our flight just as much as we did.

Unclear pricing; ended up being charged an extra $52 just to get onboard

Spirit is awful. Too expensive for what you get. Stop nickel and diming.

would be great to get basic water, soda at least and stop charging for carry ons

Your crew is a representation of your Standards and Values. The crew from Seattle to LAX, was very disappointing. The crew was more interested in hanging out at the lobby area. Talking, laughing loudly and eating all the snacks. They did not do regular rounds to see if customers needed anything. This was a huge disappointment. I will no longer be flying with your airlines moving forward.

- flight attendants not very friendly. - Paid for WiFi and plane didn’t have it working , never got a refund.

We got to fly on the new airplane. Much better as it’s roomier and cleaner than before. Most Importantly it’s much more comfortable. I still can’t move the seat back but the extra space made up for it. I didn’t taste the food or drinks because they charge for everything so I didn’t bother. I didn’t experience the entertainment because I downloaded my own movies on my phone. The crew was great. The flight itself was smooth . No complaints.

I was comfortable because I upgraded. I would not have been comfortable in economy. It was a short flight so there was limited food service and no inflight entertainment.

I thought since I upgraded my seat I would get some perks. Free water, free snacks. Free carry on luggage.

It’s ridiculous to pay for carry-on luggage. I also wasn’t given an option to specify I have carry on bag at time of ticket purchase. I also could not specify I have carry on luggage at time of online check-in.

The reps working at the airport counter were dumber than a second coat of paint.

My costume jewelry was stolen out of my bag. Got to airport and my bag weighed 45 pounds- 5 pounds over cost me $100 Long lines in tier one. No entertainment No WiFi no free drinks or snacks

Not very good. Paid in excess of $400 for assigned seating for my family and that was not provided. I want that money back.

The seats were hard molded plastic covered in plastic vinyl. And the scam to charge people extra to sit together. Don’t they know we can just ask someone to trade seats. And watching the staff separate young children from parents… super classy. We had to guilt them into offering up our seats. This companies policies suck. Don’t give them your money.

The seats were awful, hard plastic covered in sheet vinyl. The airline tries to scam you into paying extra to get seat together when the flight wasn’t full. They were going to separate a family with young children but my wife who had a row to herself gave up her seat so the young mom could be with her young boys. I’m never giving this airline my money again.

It was a short flight so no food or entertainment….

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

I’ve never traveled on Frontier before. If you want basic, no frills, friendly service at great prices then give them a fly!

Everything went as planned. Crew was great. Seats were still not that comfortable.

No frills for sure. No gate announcements about flight delay, not even water to drink on the flight.

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

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