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Find cheap flights from Portland to Riverside from $42

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 5/29. 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.
1 adult
0 bags
Sat 5/25
Sat 6/1

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Good to know

Low season

January

High season

March

Cheapest flight

$42
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly with an average 31% 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

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 25m.

  • How many flights are there between Portland and Riverside?

    89 direct flights run between Portland and Riverside on a daily basis. On average, there are about 629 departures each week.

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

    Consider leaving on a Tuesday and avoid Saturdays 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 Mondays.

  • 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 Spirit Airlines for $42. Frontier offered a round-trip connection from $92 and Spirit Airlines from $93.

See more FAQs

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 79 days before departure, on average.
  • Book at least 3 weeks before departure in order to get a below-average price.
  • High season is considered to be February, March and April. The cheapest month to fly is January.
See more tips

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 9110 reviews
8.2boarding
7.3entertainment
7.9comfort
8.6crew
7.3food
Airline reviews

It was so easy to board using my boarding pass on my iPhone, and I liked what I was given on the plane for food and drink, and everyone was very friendly.

10.0 ExcellentAnonymous, Apr 2024PDX - OAK
Read more about Alaska Airlines reviews

It was so easy to board using my boarding pass on my iPhone, and I liked what I was given on the plane for food and drink, and everyone was very friendly.

dont re-route to San Jose. Re-route to closer airport. Provide shuttle bus to go to SFO, not just LYFT vouchers.

Staff seemed genuinely nice, not just going through the motions.

I would have rated the entire experience much better were it not for two things: 1. There was inconsistency between what we were told once on the plane vs. the answer I received to the question about "spreading out" from our assigned seats because the flight was sparsely populated, and the entire row we were in was empty but for us. I asked about one of us moving over one seat to make more room for us; before getting on the plane, I was told we could, which seemed like a sensible answer. Once on the plane, it was announced that we needed to stay in our assigned seats despite all of the empty space in our row, which seemed unneccessarily restrictive. 2. To add to the discomfort, we sat on the tarmac once the plane landed in Burbank for over half an hour waiting for a gate to become available. During that time we had to remain seated and buckled in, which was becoming more difficult as time dragged on, especially for my wife. If all of this was due to regulations, that may mitigate the sense of "needless" restriction somewhat, but it points to a need to make regulations less restrictive where it is not appropriate for the current conditions. The crew was not "nasty" about the restrictions, so I do not resent their actions, but it certainly would have been a much more pleasant flight if we had a few more options when it comes to comfort.

The seat side plug ins didn’t work in my row, and I ran out of things to do since my iPad and iPhone ran out of juice. The flight attendant offered me a free drink but I don’t drink. I suggested a free snack box instead and she just shrugged and walked off. Why do us non-drinkers get the short end of the stick?

Flight left two hours late with no real explanation and they inexplicably had the heat running on the flight as well

I like Alaska Air fine. Great crew. Late departure still arrived on time.

Plane delayed, emergency light on so we couldn’t board- further delayed, had to sit on run way for an hour for other plane priority

I missed my flight and was not able to rebook. I switched to jet blue for a same day flight. Both legs were cancelled. Unacceptable.

It was just fine. Short flight so nothing special to comment on.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Crew was not friendly when I went to request a seat change.

Really impressive staff at airport and on plane, especially given how busy it was

Was a great smooth flight from Detroit to San Diego.

Flight boarded without pilots. Sat on plane for 3 hrs. after over an hour late boarding. Plane never took off. Had to deplane near midnight. Line for rebooking was 3 hours + long. I had to leave.

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

Plane felt so crowded and tightly packed. The chair itself was not comfortable.

We were told there would be no food/beverage service due to turbulence. There was very little turbulence on the 2+ hour flight. I was in First Class and thought they could have done a quick service after take off as they had a quite bit of time before we would be reaching the predicted turbulent area. They could have at least passed out a quick bag of pretzels.

They attended to my needs as I couldn't walk and they provided a wheelchair for me.q

They charged me 212.00 for a heavy check in bag at the gate. The pricing and process was so confusing - as if it was designed to purposefully gouge customers who need to board plane. That experience combined with the outrageous price charged will prevent me from ever flying Spirit again. And I’ll be sure to tell the story to anyone who cares to hear.

The text told me it was changed to Terminal E and Gate D5. But with no one on site to ask questions there was confusion on where to go as all the gates were E's. Then we took the skyline to the D area. We left to get something to eat. No announcement was made but my daughter happened to asked and they told her our gate was moved to D12. I will not fly Spirit again.

The agent at the check in desk was absolutely rude. The rest of the team after that was good, but the check in process at LAS was miserable. The woman at the desk spoke like we were stupid and was rude throughout the process.

Its so random that they only allow 40 pounds on checked bags when all airlines take 55. They then charge you for each 10 extra pounds, so my checked suitcase was $130 and the flight $30 ... its like whattt, im for sure not traveling with Spirit again

So bad. The check in process was laborious and the check in agent didn't seem to know how to manage the process efficiently and was confused about how to check in my son's sports equipment. The baggage fees were outrageous and so expensive. $90 for a carry on bag? And $200 additional for 2 check ins. The security lines were insanely long and the terminal was not very nice in the Spirit area. $5 for a water on board. It was my first and last time flying Spirit - I tried to save $ by flying them due to the accommodating schedule but I should have paid for Southwest, because it would've actually ended up less expensive due to the free bags with Southwest. There were no charging ports on the airplane, no wifi and really uncomfortable seating. The flight crew were great though, courteous and efficient in their boarding. Flight was delayed 1 hour, but we made up 15 minutes in flight.

My experience was better than expected. What I did find not so great was the seats. Very little room, they did not recline and the tray table was the size of a post card. There was no food to try, just standard snacks that you had to pay for and I don’t know of any entertainment. I would fly again even though everything was an upcharge. Flight was on time with little disturbance

Okay, cost of baggage and bidding for a seat is weird.

thy don't even ofer water we have to buy it for $4.49 and paid for our cary on bags $100 each we never will fly in this company again.

Super cool and laid back, three lovely ladies. Couldn’t ask for better service.

It was fine. Boarding was a little rude. On flight staff was great. The cost to purchase everything was a bit annoying but I get that's the business model.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Not have to pay for every single item to take a flight. Seating and delays sucked.

Flight was cancelled and I had to spend the night in the airport lugging my suitcase around

If you don’t check in 24 hours in advance, they will charge you $110 to check your bag instead of the $30. I did not get an email with this information and did not check in. In addition, my flight home was cancelled at layover and I had to spend the night in the airport, and then have another layover at another airport before making it home. Will not fly frontier again.

Book cheap flights from Portland to Riverside

Recent round-trip flight deals

5/7Tue
1 stopFrontier
10h 30mPDX-LAX
5/8Wed
1 stopFrontier
11h 40mLAX-PDX
$92
5/14Tue
1 stopSpirit Airlines
6h 40mPDX-LAX
5/14Tue
1 stopSpirit Airlines
12h 22mLAX-PDX
$93
5/13Mon
1 stopFrontier
19h 34mPDX-LAX
5/21Tue
1 stopFrontier
5h 41mLAX-PDX
$95
5/8Wed
1 stopFrontier
10h 31mPDX-LAX
5/13Mon
1 stopFrontier
27h 01mLAX-PDX
$96
5/8Wed
1 stop
10h 31mPDX-LAX
5/14Tue
1 stop
12h 22mLAX-PDX
$102
5/13Mon
1 stop
4h 35mPDX-LAX
5/18Sat
1 stop
4h 44mLAX-PDX
$104
5/15Wed
nonstopAlaska Airlines
2h 25mPDX-LAX
5/31Fri
nonstopAlaska Airlines
2h 29mLAX-PDX
$157
6/12Wed
nonstopAlaska Airlines
2h 25mPDX-LAX
11/19Tue
nonstopAlaska Airlines
2h 22mLAX-PDX
$158
5/15Wed
nonstopDelta
2h 34mPDX-LAX
5/19Sun
nonstopDelta
2h 26mLAX-PDX
$177
5/18Sat
nonstopDelta
2h 28mPDX-LAX
5/25Sat
nonstopDelta
2h 20mLAX-PDX
$188

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Recent one-way flight deals

5/29Wed
1 stopSpirit Airlines
7h 25mPDX-LAX
$42
5/14Tue
1 stopSpirit Airlines
6h 40mPDX-LAX
$43
5/13Mon
1 stopFrontier
4h 35mPDX-LAX
$49
5/13Mon
1 stopFrontier
19h 34mPDX-LAX
$56
5/25Sat
nonstopDelta
2h 25mPDX-LAX
$79
6/26Wed
nonstopDelta
2h 34mPDX-LAX
$80
6/4Tue
1 stopAlaska Airlines
6h 02mPDX-LAX
$88
6/26Wed
1 stopAlaska Airlines
4h 50mPDX-LAX
$89
10/13Sun
1 stopUnited Airlines
4h 30mPDX-LAX
$154
5/10Fri
2 stopsUnited Airlines
11h 43mPDX-LAX
$215

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Last minute flights from Portland to Riverside

Last minute flight, train and bus deals

4/30Tue
multi-stopFrontier
10h 30mPDX-LAX
5/1Wed
multi-stopFrontier
11h 40mLAX-PDX
$120
4/30Tue
multi-stopFrontier
26h 34mPDX-LAX
5/3Fri
multi-stopFrontier
27h 01mLAX-PDX
$149
4/30Tue
multi-stopFrontier
10h 30mPDX-LAX
5/2Thu
multi-stopFrontier
11h 45mLAX-PDX
$154
4/30Tue
multi-stop
19h 21mPDX-LAX
5/8Wed
multi-stop
11h 40mLAX-PDX
$160
4/30Tue
multi-stopSpirit Airlines
12h 44mPDX-LAX
5/1Wed
multi-stopSpirit Airlines
19h 44mLAX-PDX
$163
4/30Tue
multi-stopSpirit Airlines
21h 58mPDX-LAX
5/1Wed
multi-stopSpirit Airlines
19h 44mLAX-PDX
$197
4/26Fri
multi-stop
12h 10mPDX-LAX
5/16Thu
multi-stop
6h 05mLAX-PDX
$229
4/30Tue
nonstopAlaska Airlines
2h 25mPDX-LAX
5/1Wed
multi-stopAlaska Airlines
6h 49mLAX-PDX
$417
4/26Fri
multi-stopAlaska Airlines
4h 28mPDX-LAX
5/15Wed
nonstopAlaska Airlines
2h 28mLAX-PDX
$431
4/27Sat
nonstopDelta
2h 23mPDX-LAX
5/15Wed
nonstopDelta
2h 25mLAX-PDX
$435

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Flights to Riverside

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