$99+ 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 7/31. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LAX
Jul 9 — Jul 161
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Riverside with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Portland to Riverside are usually found in January or August, booked 90 days in advance, depart on a Friday or Thursday and return on a Saturday
Cheap flight deals from Portland to Riverside
Cheapest
Best
Last-minute
One-way
Cheapest flights from Portland to RiversideExplore 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 June 9, 2026.
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 June 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 8/75:36 pm
PDX
- LAX
Nonstop2h 28m
Multiple Airlines
Sat 8/151:56 pm
LAX
- PDX
1 stop28h 12m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Thu 7/305:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Thu 8/66:30 am
LAX
- PDX
1 stop11h 34m
Frontier
Deal found 6/4![Frontier logo]()
$173
This Flightnetwork deal was found by Cheapflights users on 6/6. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/115:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Thu 7/169:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 6/6![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 6/5. 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.
Sat 10/105:30 pm
PDX
- LAX
Nonstop2h 26m
Frontier
Thu 10/159:07 am
LAX
- PDX
Nonstop2h 32m
Frontier
Deal found 6/5![Frontier logo]()
$175
This Super.com deal was found by Cheapflights users on 6/7. 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.
Thu 9/245:30 pm
PDX
- LAX
Nonstop2h 26m
Frontier
Mon 9/2811:55 am
LAX
- PDX
Nonstop2h 32m
Frontier
Deal found 6/7![Frontier logo]()
$176
This Frontier deal was found by Cheapflights users on 6/8. 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.
Sun 10/45:30 pm
PDX
- LAX
Nonstop2h 26m
Frontier
Sun 10/119:07 am
LAX
- PDX
Nonstop2h 32m
Frontier
Deal found 6/8![Frontier logo]()
$178
This Frontier deal was found by Cheapflights users on 6/8. 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 8/85:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Fri 8/219:18 am
LAX
- PDX
Nonstop2h 23m
Frontier
Deal found 6/8![Frontier logo]()
$179
This Frontier deal was found by Cheapflights users on 6/8. 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 8/85:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Sat 8/159:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 6/8![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Mon 10/55:30 pm
PDX
- LAX
Nonstop2h 26m
Frontier
Thu 10/89:07 am
LAX
- PDX
Nonstop2h 32m
Frontier
Deal found 6/8![Frontier logo]()
$181
This Frontier deal was found by Cheapflights users on 6/4. 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 6/275:42 pm
PDX
- LAX
Nonstop2h 29m
Frontier
Sat 7/189:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 6/4![Frontier logo]()
$184
This Southwest deal was found by Cheapflights users on 6/7. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:50 am
PDX
- LAX
1 stop4h 10m
Southwest
Sat 9/1210:10 am
LAX
- PDX
1 stop6h 40m
Southwest
Deal found 6/7![Southwest logo]()
$185
Best flights from Portland to RiversideDiscover carefully curated flight deals from Portland to Riverside that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 9, 2026.
Discover carefully curated flight deals from Portland to Riverside that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 9, 2026.
This Southwest deal was found by Cheapflights users on 6/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/65:30 pm
PDX
- LAX
1 stop3h 45m
Southwest
Wed 10/286:40 am
LAX
- PDX
1 stop3h 30m
Southwest
Deal found 6/8![Southwest logo]()
$201
This Alaska Airlines deal was found by Cheapflights users on 6/8. 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.
Sat 9/2610:33 am
PDX
- LAX
Nonstop2h 39m
Alaska Airlines
Tue 9/298:26 am
LAX
- PDX
Nonstop2h 24m
Alaska Airlines
Deal found 6/8![Alaska Airlines logo]()
$209
This Delta deal was found by Cheapflights users on 6/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/315:10 pm
PDX
- LAX
Nonstop2h 24m
Delta
Sun 11/87:00 am
LAX
- PDX
Nonstop2h 31m
Delta
Deal found 6/4![Delta logo]()
$223
This United Airlines deal was found by Cheapflights users on 6/7. 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.
Sat 11/77:49 pm
PDX
- LAX
1 stop4h 36m
United Airlines
Mon 11/98:05 pm
LAX
- PDX
1 stop4h 49m
United Airlines
Deal found 6/7![United Airlines logo]()
$243
This Alaska Airlines deal was found by Cheapflights users on 6/6. 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.
Sat 9/52:53 pm
PDX
- LAX
Nonstop2h 31m
Alaska Airlines
Mon 9/79:37 pm
LAX
- PDX
Nonstop2h 22m
Alaska Airlines
Deal found 6/6![Alaska Airlines logo]()
$223
This Southwest deal was found by Cheapflights users on 6/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:00 am
PDX
- LAX
1 stop5h 40m
Southwest
Tue 9/229:25 am
LAX
- PDX
2 stops6h 00m
Southwest
Deal found 6/8![Southwest logo]()
$242
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Mon 11/161:39 pm
PDX
- LAX
1 stop4h 22m
United Airlines
Wed 11/188:05 pm
LAX
- PDX
1 stop4h 49m
United Airlines
Deal found 6/6![United Airlines logo]()
$247
This Delta deal was found by Cheapflights users on 6/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/51:40 pm
PDX
- LAX
Nonstop2h 22m
Delta
Mon 9/78:00 pm
LAX
- PDX
Nonstop2h 12m
Delta
Deal found 6/4![Delta logo]()
$249
This Southwest deal was found by Cheapflights users on 6/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:00 am
PDX
- LAX
1 stop5h 30m
Southwest
Sun 8/236:05 am
LAX
- PDX
1 stop4h 10m
Southwest
Deal found 6/5![Southwest logo]()
$243
This Alaska Airlines deal was found by Cheapflights users on 6/8. 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.
Sun 8/910:48 am
PDX
- LAX
Nonstop2h 35m
Alaska Airlines
Tue 8/187:00 am
LAX
- PDX
Nonstop2h 21m
Alaska Airlines
Deal found 6/8![Alaska Airlines logo]()
$258
This Delta deal was found by Cheapflights users on 6/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/277:42 am
PDX
- LAX
Nonstop2h 33m
Delta
Sat 7/186:51 pm
LAX
- PDX
Nonstop2h 13m
Delta
Deal found 6/8![Delta logo]()
$269
Last-minute flights from Portland to RiversideDiscover last-minute flight deals from Portland to Riverside. Data last updated June 9, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Riverside. Data last updated June 9, 2026 and is based on user searches.
This deal was found by Cheapflights users on 6/7. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/135:42 pm
PDX
- LAX
Nonstop2h 29m
Frontier
Sun 6/149:18 am
LAX
- PDX
Nonstop2h 23m
Frontier
Deal found 6/7![Frontier logo]()
$193
This Frontier deal was found by Cheapflights users on 6/4. 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 6/275:42 pm
PDX
- LAX
Nonstop2h 29m
Frontier
Sat 7/189:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 6/4![Frontier logo]()
$184
This iWofly deal was found by Cheapflights users on 6/5. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:42 pm
PDX
- LAX
Nonstop2h 29m
Frontier
Fri 7/109:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 6/5![Frontier logo]()
$187
This Frontier deal was found by Cheapflights users on 6/8. 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 7/95:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Sun 7/129:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 6/8![Frontier logo]()
$198
This Flightnetwork deal was found by Cheapflights users on 6/6. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/115:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Thu 7/169:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 6/6![Frontier logo]()
$174
This Frontier deal was found by Cheapflights users on 6/4. 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 7/115:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Sun 7/129:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 6/4![Frontier logo]()
$199
This Trip.com deal was found by Cheapflights users on 6/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:37 pm
PDX
- LAX
Nonstop2h 32m
Multiple Airlines
Sat 7/259:15 am
LAX
- PDX
Nonstop2h 20m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$194
This Expedia deal was found by Cheapflights users on 6/4. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/245:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Sun 7/269:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 6/4![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 6/4. 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.
Thu 7/305:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Thu 8/66:30 am
LAX
- PDX
1 stop11h 34m
Frontier
Deal found 6/4![Frontier logo]()
$173
One-way flights from Portland to RiversideSearch for one-way flight options from Portland to Riverside. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
Search for one-way flight options from Portland to Riverside. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
This Frontier deal was found by Cheapflights users on 6/7. 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 7/315:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Deal found 6/7![Frontier logo]()
$99
This Southwest deal was found by Cheapflights users on 6/8. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/75:40 am
PDX
- LAX
2 stops8h 50m
Southwest
Deal found 6/8![Southwest logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 9/293:22 pm
PDX
- LAX
1 stop8h 41m
Frontier
Deal found 6/6![Frontier logo]()
$104
This American Airlines deal was found by Cheapflights users on 6/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/155:08 pm
PDX
- LAX
Nonstop2h 34m
American Airlines
Deal found 6/8![American Airlines logo]()
$105
This United Airlines deal was found by Cheapflights users on 6/8. 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 7/85:15 am
PDX
- LAX
1 stop5h 19m
United Airlines
Deal found 6/8![United Airlines logo]()
$110
This Super.com deal was found by Cheapflights users on 6/7. 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.
Fri 7/175:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Deal found 6/7![Frontier logo]()
$112
This Travelocity deal was found by Cheapflights users on 6/8. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Deal found 6/8![Frontier logo]()
$114
This United Airlines deal was found by Cheapflights users on 6/7. 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 7/296:03 pm
PDX
- LAX
1 stop6h 16m
United Airlines
Deal found 6/7![United Airlines logo]()
$115
This Super.com deal was found by Cheapflights users on 6/8. 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.
Mon 8/35:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Deal found 6/8![Frontier logo]()
$116
This Super.com deal was found by Cheapflights users on 6/5. 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.
Fri 7/105:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Deal found 6/5![Frontier logo]()
$117
This Super.com deal was found by Cheapflights users on 6/5. 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.
Thu 7/95:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Deal found 6/5![Frontier logo]()
$118
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 June 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $172 (Kiwi.com) |
One-way from | $99 (Frontier) |
Popular in | March |
Cheapest in | January |
Average price | $257 |
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 June 9, 2026.
Use the filters below to find and compare flights from Portland to Riverside that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Tue 10/6
5:30 pm-9:15 pm
1 stop3h 45m
Los Angeles
Wed 10/28
6:40 am-10:10 am
1 stop3h 30m
$201
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 9/26
10:33 am-1:12 pm
Nonstop2h 39m
Los Angeles
Tue 9/29
8:26 am-10:50 am
Nonstop2h 24m
$209
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 10/31
5:10 pm-7:34 pm
Nonstop2h 24m
Los Angeles
Sun 11/8
7:00 am-9:31 am
Nonstop2h 31m
$223
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 9/5
2:53 pm-5:24 pm
Nonstop2h 31m
Los Angeles
Mon 9/7
9:37 pm-11:59 pm
Nonstop2h 22m
$223
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Thu 9/17
5:00 am-10:40 am
1 stop5h 40m
Los Angeles
Tue 9/22
9:25 am-3:25 pm
2 stops6h 00m
$242
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 11/7
7:49 pm-12:25 am
1 stop4h 36m
Los Angeles
Mon 11/9
8:05 pm-12:54 am
1 stop4h 49m
$243
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 8/22
6:00 am-11:30 am
1 stop5h 30m
Los Angeles
Sun 8/23
6:05 am-10:15 am
1 stop4h 10m
$243
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Mon 11/16
1:39 pm-6:01 pm
1 stop4h 22m
Los Angeles
Wed 11/18
8:05 pm-12:54 am
1 stop4h 49m
$247
Quickest round-trip
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 9/5
1:40 pm-4:02 pm
Nonstop2h 22m
Los Angeles
Mon 9/7
8:00 pm-10:12 pm
Nonstop2h 12m
$249
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sun 8/9
10:48 am-1:23 pm
Nonstop2h 35m
Los Angeles
Tue 8/18
7:00 am-9:21 am
Nonstop2h 21m
$258
Showing 1-10 of 22 resultsSorted by cheapest first
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.
PDX-LAX
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
PDX-R1V
PDX-LAX
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 June 9, 2026.
It’s typically best to fly out from Portland to Riverside in the evening. Doing so could potentially save you 19% on the flight price compared to flying in the afternoon, which is usually more expensive.
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 June 9, 2026.
The most flights from PDX to R1V are scheduled on a Tuesday (62 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).
How much does it cost to fly round-trip from Portland to Riverside?
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 June 8, 2026.
Travelers seeking maximum savings on their Portland to Riverside flight should consider departing on Friday evenings when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
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 June 9, 2026.
Read reviews from past customers who have flown Alaska Airlines,Delta, andHawaiian 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.
Entertainment
7.0
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Entertainment
7.0
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
7.8
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
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.
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Portland and Riverside flights
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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 June 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$50 | Average$162 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$83 | Average$286 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$88 | Average$243 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$142 | Average$287 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$152 | Average$279 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$155 | Average$268 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$158 | Average$271 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$293 | FlexibilityNo cancel fee | On-time63% |