$62 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 10/27. 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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1 adult, Economy

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Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Riverside

Sat, Nov 15 - Sat, Dec 13
Frontier Logo
12:52 pm - 12:25 amPDX-LAX
11h 33m1 stop
Frontier Logo
10:44 am - 1:20 pmLAX-PDX
2h 36mnonstop
$114Frontier
Find Deal
Fri, Dec 5 - Sat, Dec 6
Frontier Logo
2:15 pm - 4:38 pmPDX-LAX
2h 23mnonstop
Frontier Logo
10:44 am - 1:20 pmLAX-PDX
2h 36mnonstop
$115Frontier
Find Deal
Sat, Oct 25 - Thu, Nov 6
Frontier Logo
2:18 pm - 4:44 pmPDX-LAX
2h 26mnonstop
Frontier Logo
8:40 pm - 6:36 pmLAX-PDX
21h 56m1 stop
$116Frontier
Find Deal
Thu, Nov 6 - Sat, Nov 8
Frontier Logo
1:21 pm - 3:47 pmPDX-LAX
2h 26mnonstop
Frontier Logo
9:51 am - 12:23 pmLAX-PDX
2h 32mnonstop
$117Frontier
Find Deal
Thu, Nov 6 - Mon, Nov 10
Frontier Logo
1:21 pm - 3:47 pmPDX-LAX
2h 26mnonstop
Frontier Logo
9:51 am - 12:23 pmLAX-PDX
2h 32mnonstop
$118Frontier
Find Deal
Sat, Nov 1 - Mon, Nov 3
Frontier Logo
1:21 pm - 3:47 pmPDX-LAX
2h 26mnonstop
Frontier Logo
9:51 am - 12:23 pmLAX-PDX
2h 32mnonstop
$119Frontier
Find Deal
Tue, Nov 4 - Tue, Nov 4
Alaska Airlines Logo
7:00 am - 12:11 pmPDX-LAX
5h 11m1 stop
Alaska Airlines Logo
2:18 pm - 4:50 pmLAX-PDX
2h 32mnonstop
$131Alaska Airlines
Find Deal
Sat, Nov 1 - Tue, Nov 4
Multiple Airlines Logo
1:21 pm - 3:47 pmPDX-LAX
2h 26mnonstop
Multiple Airlines Logo
3:58 pm - 8:37 pmLAX-PDX
4h 39m1 stop
$145Multiple Airlines
Find Deal
Sat, Nov 15 - Tue, Dec 9
Multiple Airlines Logo
1:21 pm - 3:47 pmPDX-LAX
2h 26mnonstop
Multiple Airlines Logo
7:00 am - 9:36 amLAX-PDX
2h 36mnonstop
$146Multiple Airlines
Find Deal
Tue, Nov 18 - Wed, Dec 10
Southwest Logo
7:15 am - 11:00 amPDX-LAX
3h 45m1 stop
Southwest Logo
5:15 pm - 10:30 pmLAX-PDX
5h 15m1 stop
$154Southwest
Find Deal

Everything you should know

Cheapest round-trip
$114
Overall average: $237
Frontier
Sat 11/15Sat 12/13
PDX - LAX • 1 stop
Cheapest non-stop
$114
Typical prices: $172-$317
Frontier
Sat 11/15Mon 12/8
PDX - LAX • Non-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Riverside!
Useful Info

Good to know

Low seasonSeptember
Cheapest flight$62
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 18% 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 
CatlinFlew with Alaska AirlinesPDX-LAXJun 2025
New terminal at PDX is gorgeous & very easy. LAX is a horrible, stressful mess & worse than when I grew up there. Waited with confirmed reservation at Dollar rentals for 90 minutes with 3 clerks. ALLOW EXTRA TIME.
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.

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 21m.

  • How many flights are there between Portland and Riverside?

    115 direct flights run between Portland and Riverside on a daily basis. On average, there are about 809 departures each week.

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

    Consider leaving on a Saturday and avoid Thursdays if you are looking for the best rates. For your return to Portland, you’ll find the best rates on Fridays 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 $62. Frontier offered a round-trip connection from $114 and Alaska Airlines from $131.

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.

Reviews of the 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 11082 reviews
7.0Entertainment
8.5Crew
7.1Food
8.1Boarding
7.8Comfort
Airline reviews

When I bought my tickets I up great my seats for extra $104 each seats 8A and 8B in the way back from Portland to Palm Springs they gave me the seats 15. I thought it was for round trip same seats . So I was very disappointed ☹️

6.0 GoodAnonymous, Sep 2025PDX - PSP
Read more Alaska Airlines reviews

When I bought my tickets I up great my seats for extra $104 each seats 8A and 8B in the way back from Portland to Palm Springs they gave me the seats 15. I thought it was for round trip same seats . So I was very disappointed ☹️

Staff inside Portland terminal were rude, made us fell rushed and not at all accommodating to seniors. For this alone I will probably never booked from them again.

It was fine—the seats are not very comfortable and the aisles are very narrow. Nothing different from other airlines

Well the flight being delayed multiple time really was frustrating. But the crew and flight was good.

generally good. No snacks or drinks on the flight 3379 from Portland to San Jose, CA. Sad.

Everything except for the lack of a choice of the snack provided was great.

I like the friendliness of the staff. The food choices were OK. I wish there was more options. The entertainment through the movie portal was alright.

There was a very drunk man behind me who kept talking loudly to no one in particular. He was slurring his words and at times he didn’t know where we were going or whether or not we landed. He was also loudly using a lot of profanity. The attendants didn’t seem to notice or care and in fact continued to serve him alcohol. He was allowed to purchase 4 little bottles.

At the Portland airport, Alaska Airlines has put in a system where you have to create your own bag tag, then put your own suitcase onto a scale to weigh it. The day we were there, the system was not working properly, and we kept on being told to go onto different lines so it took us approximately 45 minutes to check our bag in. I do not work for the airlines why am I subjected to doing this? How all these companies are shifting their work onto people who have paid good money for their products is crazy. And then the system that the customers are supposed to use don't work properly..

I liked Alaska better than other carriers that I have EVER used. Unfortunately, the plane from LAX to Guanacaste leg of my journey had some mechanical problems and had to return to LAX - causing my journey to be very long and added a day to my total trip. The Airline was very prompt in offering their apology and have given me credit to use for my next flight. I thought the terminal in LAX was too cold for comfort, especially if there is a long wait between flights.

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

Food was surprisingly good but the WiFi was not great

My flight was extremely cold. I had a jacket and a cover was left in each seat. The cover was extremely thin and I have a disability, fibromyalgia and arthrithis and AC air is the worst. I closed my vent and my husbands vent and it still was frigid. I asked the attendant if I could get another cover and she quickly almost dismissively and totally unconcerned stating, (I quote) (one per chair) and walked off so quickly that I didn't get a chance to explain to her that I literally have adisability. I didnt want to make a seen so I set on that flight for over 5 hours in pain, joints locking up and extremely uncomfortable. When my fibromyalgia flares up my joints not only ache but they will lock up also and it takes me days to get back to my regular self even though I take medication for it. I felt like it would not have hurt anyone at all for her to just give me an extra cover because I'm sure they have all types of medical issues in people that fly every day.

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

The crew was EXTREMELY helpful And sweet and the flight was smooth!

The Kayak confirmation number did not work for checking in the day before. I checked in at 8.30 using my ticket number. When I arrived at the airport, I was informed that the flight was overbooked, and since I had checked in late, I did not have a seat. The Next flight was not until ten PM. I called my wife, who had been taking care of our kids all weekend, and she was upset, calling me a liar and telling me to stay in SD. It turned my weekend getaway into a nightmare! I blame the Kayak website and will not book flights using your app in the future.

One hour waiting time after boarding, but arrived in time. I am satisfied

Flying with Hawaiian Airlines is a treat! They have the best crew, food and drinks! I’ve always enjoyed flying with Hawaiian Airlines and will continue to use them!

Amazing all female crew, including the pilot. Great flight attendants and smooth trip. Food was good. Boarding the plane from back to front would have made things significantly smoother. Took forever to wait for people to clear the alley. A little extra leg room would be nice also. Please thank your flight crew!

We decided to take our mom on vacation but we were worried how well she will do on the flight, she's a senior and required special accommodations such as transport chair since she can't stand for long periods. To our surprise my whole family was given priority boarding, my mom was given chair, we were not standing in line and were given seats in good area next to our mom. A+ experience!

I understand that both Hawaiian and Alaskan are in the process of merging but I could not get real-time flight info or access my boarding pass on either app

We got surprised and switched to Alaska airline. Dirtiest tray and seats I have ever board on and we travel all the time. Help desk would not help by chat as I'm disabled to get my sets assigned tell me call Hawaiian air. I call Hawaiian air was told the flights RT are by Alaska. Make it short, worse flights of our life.

First class ticket. They ran out of food and I sat hungry watching the others eat

They we able to seat my companion and I next to each other. Plane’s temperature was very cool. Willl be more prepared on return trip.

The flight crew was rude. We were in first class and no one even offered water until an hour after we were in the air. Horrible experience

Great. Quick and quiet and east. The breakfast choices were a welcome surprise!

The stewardess hit me with the food kart twice on the head and didn't say I'm sorry once. The same stewardess gave me a warm Apple Juice with No ice. The Flight was delayed for Departure 6 times, starting from 2:36pm, finally taking off 7:50pm. I was late picking up my child from the sitter by 3 hours.

Did not get the seat I selected and paid for.

My flight was delayed for several hours. Sitting at gate 16 for several hours, I got a text from Kayak the gate changed to 9 before it was announced. Very bad communication at each gate from American Airlines employees. I received 10 notifications of delay from Kayak. My vacation started off horrible! I will write to American Airlines corporate office also.

Delayed flight that lead to a missed connection and a 5-hour trip became a 12-hour flight 🙄

As smooth as you can expect. Some issues with boarding because the previous plane took forever to deplane but overall, a good experience.

There is no room, no gluten free options, or any free internet/entertainment. You have to bring your own tablet or smartphone because there are no screens.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

Boarding gate in Honolulu was staffed with a great clerk with a soothing voice despite the flight delay of over an hour. Flight attendants in the plane were all grumpy, not pleasant looking bunch. Their sour attitude showed throughout the flight. Inly able to get a select few movies started. Most of the movie links in the “free entertainment” did not work.

I knew going into this that Frontier, being a low cost carrier, would be pretty bare bones and charge for most extras but this was made up for by the fact that the airplane was a reasonably new Airbus, every employee was great and best of all, Everett Washington is an amazing airport - thanks Frontier for flying there!!!

i was unable to check in the flight. refund requested

It was well done. It was my first time flying with them and I was nervous b/c I have heard of many cancelled and/or delray flights. Everything went smoothly.

Just know that everything, and I mean everything is “ala cart”. 60$ just to put something in the overhead bin. I will never fly Frontier again nor do I recommend them to anyone else.

The single worst check in experience I could imagine. I’ll never do any business with Frontier or any affiliated company

Too many extra fees, uncomfortable, little leg room. Will not recommend this airline.

Everyone seemed to be in zone 1 for boarding. Maybe break it up a little. Otherwise, smooth flight.

Frontier is the Walmart of airlines. Frontier has removed adjustability and comfort from their seats to make the flight lighter and save gas. This makes it impossible to sleep on their flights. Their customer service is abysmal. Once, I bought a drink on the plane, and they swiped my credit card on the plane to pay for it. Then I got three weeks of daily notices from my bank telling me they tried to charge the wrong card number over and over again. I tried to call them, but they removed the ability to actually talk to someone that can resolve such a problem from their company to cut corners. The only way to talk to someone in person is to go to the check-in counter at the airport (40 minutes drive from my house). Eventually their system gave up on trying to charge the card, after 21 days of repeated tries. They don't pad their prices even a little to handle customer service issues like missed flights. They also have a blanket policy preventing helping you reschedule a missed flight if their system says you "cancelled" your own flight online. This is a major problem because their website is broken on mobile devices, the only web browser you have at the airport when their gate staff tell you that you have to reschedule your own missed flight online because they can't help you. I tried to reschedule my flight on my android device and instead, their website crashed and "cancelled" my missed flight. When I got to the counter, the agent argued with me for 5 minutes insisting that I intentionally cancelled my own flight (implying I had to buy another flight). She missed the point: the problem was that I could not buy another flight because their website is broken. I left to avoid more conflict with the "customer service" agent. I tried to redress my issue with their only other "customer service" chanel available: the contact form on their website. The response I got was more of the same: you cancelled your own flight, according to our website / computer records, therefore we won't help you. I was trying to explain the problem with their broken website that cost me hundreds of dollars by crashing / malfunctioning and resulting in a cancelled flight, but they only had deaf ears for this problem. Worst customer service I have ever experienced. I will never buy another Frontier flight again, because it is a risky, painful move that I will likely regret often.

I think Frontier was very good at communication. Their app worked very well. Loading was great and the flight was nice and easy.

This airline sucks. They offer low rates then charge you for everything, the app does not work well, the seats are the most uncomfortable. Maintenance issues on the flight, and you still have to sit through their credit card commercials. People are nice enough but does not make up for overall poor experience.

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