$105+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LAX
Aug 24 — Aug 311
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 September or January, 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 July 25, 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 July 25, 2026.
This Expedia deal was found by Cheapflights users on 7/21. 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.
Wed 8/1210:42 am
PDX
- LAX
1 stop4h 40m
Multiple Airlines
Mon 8/179:15 am
LAX
- PDX
Nonstop2h 20m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$202
This Frontier deal was found by Cheapflights users on 7/22. 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 8/285:56 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Wed 9/236:15 am
LAX
- PDX
1 stop8h 12m
Frontier
Deal found 7/22![Frontier logo]()
$203
This Frontier deal was found by Cheapflights users on 7/25. 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.
Mon 9/145:30 pm
PDX
- LAX
Nonstop2h 26m
Frontier
Sat 9/1911:55 am
LAX
- PDX
Nonstop2h 32m
Frontier
Deal found 7/25![Frontier logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/145:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Sun 8/169:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 7/23![Frontier logo]()
$205
This Alaska Airlines deal was found by Cheapflights users on 7/22. 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.
Mon 8/2410:33 am
PDX
- LAX
Nonstop2h 39m
Alaska Airlines
Mon 8/242:56 pm
LAX
- PDX
1 stop5h 55m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$206
This Frontier deal was found by Cheapflights users on 7/22. 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.
Mon 8/316:17 pm
PDX
- LAX
1 stop4h 22m
Frontier
Mon 9/2111:55 am
LAX
- PDX
Nonstop2h 32m
Frontier
Deal found 7/22![Frontier logo]()
$207
This Frontier deal was found by Cheapflights users on 7/21. 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 8/135:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Sat 8/159:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 7/21![Frontier logo]()
$209
This Alaska Airlines deal was found by Cheapflights users on 7/22. 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.
Wed 8/267:03 am
PDX
- LAX
1 stop10h 19m
Alaska Airlines
Wed 9/27:03 am
LAX
- PDX
Nonstop2h 22m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/275:56 pm
PDX
- LAX
Nonstop2h 28m
Multiple Airlines
Wed 9/28:26 am
LAX
- PDX
Nonstop2h 24m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/245:56 pm
PDX
- LAX
Nonstop2h 28m
Multiple Airlines
Tue 9/228:26 am
LAX
- PDX
Nonstop2h 24m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$212
This Frontier deal was found by Cheapflights users on 7/21. 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 8/205:56 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Sat 8/229:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 7/21![Frontier logo]()
$213
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 July 25, 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 July 25, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/22. 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.
Mon 8/2410:33 am
PDX
- LAX
Nonstop2h 39m
Alaska Airlines
Mon 8/242:56 pm
LAX
- PDX
1 stop5h 55m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$206
This Delta deal was found by Cheapflights users on 7/20. 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.
Sun 8/3010:50 am
PDX
- LAX
Nonstop2h 25m
Delta
Wed 9/237:35 am
LAX
- PDX
Nonstop2h 16m
Delta
Deal found 7/20![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 7/24. 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 10/286:40 am
PDX
- LAX
1 stop6h 35m
Southwest
Sat 10/315:25 am
LAX
- PDX
2 stops6h 45m
Southwest
Deal found 7/24![Southwest logo]()
$222
This United Airlines deal was found by Cheapflights users on 7/21. 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 9/27:00 am
PDX
- LAX
1 stop5h 01m
United Airlines
Sun 9/69:37 am
LAX
- PDX
1 stop5h 10m
United Airlines
Deal found 7/21![United Airlines logo]()
$237
This Alaska Airlines deal was found by Cheapflights users on 7/22. 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 8/238:18 pm
PDX
- LAX
Nonstop2h 30m
Alaska Airlines
Wed 9/238:26 am
LAX
- PDX
Nonstop2h 24m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 7/23. 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.
Wed 9/2310:47 am
PDX
- LAX
Nonstop2h 26m
Delta
Sun 9/277:35 am
LAX
- PDX
Nonstop2h 16m
Delta
Deal found 7/23![Delta logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 7/20. 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.
Mon 8/315:55 pm
PDX
- LAX
Nonstop2h 39m
Alaska Airlines
Wed 9/237:34 pm
LAX
- PDX
Nonstop2h 21m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$217
This Delta deal was found by Cheapflights users on 7/24. 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 8/291:42 pm
PDX
- LAX
Nonstop2h 22m
Delta
Sun 8/302:19 pm
LAX
- PDX
Nonstop2h 14m
Delta
Deal found 7/24![Delta logo]()
$227
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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.
Wed 9/27:03 am
PDX
- LAX
1 stop4h 35m
Alaska Airlines
Tue 9/89:44 am
LAX
- PDX
1 stop6h 51m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 7/20. 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.
Tue 9/110:37 am
PDX
- LAX
1 stop6h 45m
Alaska Airlines
Wed 9/232:56 pm
LAX
- PDX
1 stop5h 54m
Alaska Airlines
Deal found 7/20![Alaska Airlines logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 7/25. 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 9/197:30 am
PDX
- LAX
1 stop6h 03m
Alaska Airlines
Wed 9/237:16 am
LAX
- PDX
1 stop6h 34m
Alaska Airlines
Deal found 7/25![Alaska Airlines logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 7/24. 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.
Wed 8/262:42 pm
PDX
- LAX
1 stop4h 25m
Alaska Airlines
Wed 9/28:26 am
LAX
- PDX
Nonstop2h 24m
Alaska Airlines
Deal found 7/24![Alaska Airlines logo]()
$235
Last-minute flights from Portland to RiversideDiscover last-minute flight deals from Portland to Riverside. Data last updated July 25, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Riverside. Data last updated July 25, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 7/21. 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.
Wed 8/1210:42 am
PDX
- LAX
1 stop4h 40m
Multiple Airlines
Mon 8/179:15 am
LAX
- PDX
Nonstop2h 20m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$202
This Trip.com deal was found by Cheapflights users on 7/21. 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.
Thu 8/135:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Mon 8/179:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 7/21![Frontier logo]()
$204
This Frontier deal was found by Cheapflights users on 7/21. 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 8/135:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Sat 8/159:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 7/21![Frontier logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/145:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Sun 8/169:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 7/23![Frontier logo]()
$205
This Frontier deal was found by Cheapflights users on 7/22. 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 8/2012:20 pm
PDX
- LAX
1 stop11h 51m
Frontier
Mon 8/249:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 7/22![Frontier logo]()
$208
This Frontier deal was found by Cheapflights users on 7/21. 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 8/205:56 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Sat 8/229:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 7/21![Frontier logo]()
$213
This Alaska Airlines deal was found by Cheapflights users on 7/22. 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.
Mon 8/2410:33 am
PDX
- LAX
Nonstop2h 39m
Alaska Airlines
Mon 8/242:56 pm
LAX
- PDX
1 stop5h 55m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 8/245:56 pm
PDX
- LAX
Nonstop2h 28m
Multiple Airlines
Tue 9/228:26 am
LAX
- PDX
Nonstop2h 24m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$212
This Alaska Airlines deal was found by Cheapflights users on 7/22. 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.
Wed 8/267:03 am
PDX
- LAX
1 stop4h 35m
Alaska Airlines
Tue 9/226:15 pm
LAX
- PDX
Nonstop2h 21m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/275:56 pm
PDX
- LAX
Nonstop2h 28m
Multiple Airlines
Wed 9/28:26 am
LAX
- PDX
Nonstop2h 24m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$211
This Frontier deal was found by Cheapflights users on 7/22. 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 8/285:56 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Wed 9/236:15 am
LAX
- PDX
1 stop8h 12m
Frontier
Deal found 7/22![Frontier logo]()
$203
This Frontier deal was found by Cheapflights users on 7/22. 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.
Mon 8/316:17 pm
PDX
- LAX
1 stop4h 22m
Frontier
Mon 9/2111:55 am
LAX
- PDX
Nonstop2h 32m
Frontier
Deal found 7/22![Frontier logo]()
$207
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 July 25, 2026.
Search for one-way flight options from Portland to Riverside. Find affordable one-way fares based on user searches. Data last updated July 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 8/2912:20 pm
PDX
- LAX
1 stop11h 51m
Frontier
Deal found 7/24![Frontier logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 10/205:35 pm
PDX
- LAX
1 stop20h 24m
Frontier
Deal found 7/22![Frontier logo]()
$106
This Super.com deal was found by Cheapflights users on 7/22. 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.
Sat 8/155:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Deal found 7/22![Frontier logo]()
$107
This Frontier deal was found by Cheapflights users on 7/21. 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 8/15:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Deal found 7/21![Frontier logo]()
$108
This Alaska Airlines deal was found by Cheapflights users on 7/21. 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.
Wed 9/232:42 pm
PDX
- LAX
1 stop5h 55m
Alaska Airlines
Deal found 7/21![Alaska Airlines logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 10/29:34 pm
PDX
- LAX
1 stop18h 18m
Frontier
Deal found 7/21![Frontier logo]()
$110
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 9/109:34 pm
PDX
- LAX
1 stop18h 18m
Frontier
Deal found 7/20![Frontier logo]()
$111
This Expedia deal was found by Cheapflights users on 7/22. 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.
Sat 1/95:55 pm
PDX
- LAX
1 stop6h 03m
Alaska Airlines
Deal found 7/22![Alaska Airlines logo]()
$112
This Southwest deal was found by Cheapflights users on 7/24. 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 9/126:20 am
PDX
- LAX
2 stops7h 50m
Southwest
Deal found 7/24![Southwest logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 7/21. 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.
Sun 9/612:20 pm
PDX
- LAX
1 stop11h 51m
Frontier
Deal found 7/21![Frontier logo]()
$115
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 July 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $202 (Expedia) |
One-way from | $105 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $280 |
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 July 25, 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
Mon 8/24
10:33 am-1:12 pm
Nonstop2h 39m
Los Angeles
Mon 8/24
2:56 pm-8:51 pm
1 stop5h 55m
$206
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sun 8/30
10:50 am-1:15 pm
Nonstop2h 25m
Los Angeles
Wed 9/23
7:35 am-9:51 am
Nonstop2h 16m
$217
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sun 8/23
8:18 pm-10:48 pm
Nonstop2h 30m
Los Angeles
Wed 9/23
8:26 am-10:50 am
Nonstop2h 24m
$217
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Wed 9/23
10:47 am-1:13 pm
Nonstop2h 26m
Los Angeles
Sun 9/27
7:35 am-9:51 am
Nonstop2h 16m
$217
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Mon 8/31
5:55 pm-8:34 pm
Nonstop2h 39m
Los Angeles
Wed 9/23
7:34 pm-9:55 pm
Nonstop2h 21m
$217
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Wed 9/2
7:03 am-11:38 am
1 stop4h 35m
Los Angeles
Tue 9/8
9:44 am-4:35 pm
1 stop6h 51m
$217
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Tue 9/1
10:37 am-5:22 pm
1 stop6h 45m
Los Angeles
Wed 9/23
2:56 pm-8:50 pm
1 stop5h 54m
$217
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 9/19
7:30 am-1:33 pm
1 stop6h 03m
Los Angeles
Wed 9/23
7:16 am-1:50 pm
1 stop6h 34m
$217
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Wed 10/28
6:40 am-1:15 pm
1 stop6h 35m
Los Angeles
Sat 10/31
5:25 am-12:10 pm
2 stops6h 45m
$222
Quickest round-trip
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 8/29
1:42 pm-4:04 pm
Nonstop2h 22m
Los Angeles
Sun 8/30
2:19 pm-4:33 pm
Nonstop2h 14m
$227
Showing 1-10 of 24 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 July 25, 2026.
It’s typically best to fly out from Portland to Riverside in the evening. Doing so could potentially save you 16% on the flight price compared to flying in the morning, 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 July 25, 2026.
The most flights from PDX to R1V are scheduled on a Saturday (60 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (29 on average).
How much does it cost to fly round-trip from Portland to Riverside?
Airfare is below average for this route at the moment.
Portland to Riverside flights typically cost between $202 and $312 in August.The cheapest round-trip price found within the last 5 days was $202 on Multiple Airlines (Aug 12-Aug 17).
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 July 25, 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 July 25, 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.
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Boarding
8.1
Entertainment
7.0
Food
7.0
Overall
7.9
Comfort
7.8
Crew
8.5
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Complete your trip
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Alternative routes for Portland to Riverside
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Riverside by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Portland to Riverside by cabin class
Find flights from Portland to Riverside, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Portland and Riverside flights
Browse other Portland and Riverside flight options. Last updated on July 25, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on July 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Portland to Riverside flights
Consider these flights traveling from Portland to Riverside.
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 July 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$49 | Average$170 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$83 | Average$276 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$88 | Average$241 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$142 | Average$355 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$157 | Average$275 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$158 | Average$283 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$163 | Average$306 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$177 | Average$339 | FlexibilityNo cancel fee | On-time71% |