$95+ 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LAX
mai 17 — mai 241
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 August, booked 90 days in advance, depart on a Thursday or Friday 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 abril 17, 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 abril 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
sex 5/19:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
seg 5/49:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 4/17![Frontier logo]()
$145
This Frontier deal was found by Cheapflights users on 4/13. 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.
qui 5/75:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
sex 5/89:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 4/13![Frontier logo]()
$146
This Frontier deal was found by Cheapflights users on 4/15. 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.
qui 5/285:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
sáb 5/309:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 4/15![Frontier logo]()
$147
This Frontier deal was found by Cheapflights users on 4/15. 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.
sex 6/55:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
seg 6/89:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 4/15![Frontier logo]()
$148
This Frontier deal was found by Cheapflights users on 4/13. 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.
dom 4/199:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
qui 4/239:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 4/13![Frontier logo]()
$149
This Super.com deal was found by Cheapflights users on 4/14. 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.
seg 5/412:45 pm
PDX
- LAX
1 stop4h 29m
Frontier
seg 5/119:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 4/14![Frontier logo]()
$151
This Expedia deal was found by Cheapflights users on 4/13. 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.
sáb 5/235:31 pm
PDX
- LAX
Nonstop2h 43m
Multiple Airlines
qua 5/278:00 am
LAX
- PDX
1 stop5h 50m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$152
This Trip.com deal was found by Cheapflights users on 4/17. 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.
qui 5/285:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
seg 6/19:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 4/17![Frontier logo]()
$153
This Frontier deal was found by Cheapflights users on 4/14. 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.
sex 6/55:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
dom 6/76:30 am
LAX
- PDX
1 stop10h 16m
Frontier
Deal found 4/14![Frontier logo]()
$154
This Frontier deal was found by Cheapflights users on 4/14. 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.
sex 5/295:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
ter 6/26:30 am
LAX
- PDX
1 stop10h 31m
Frontier
Deal found 4/14![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
sex 5/88:46 pm
PDX
- LAX
2 stops12h 09m
Frontier
seg 5/119:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 4/14![Frontier logo]()
$156
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 abril 17, 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 abril 17, 2026.
This United Airlines deal was found by Cheapflights users on 4/16. 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.
qua 5/135:20 am
PDX
- LAX
1 stop4h 37m
United Airlines
ter 5/198:05 pm
LAX
- PDX
1 stop4h 28m
United Airlines
Deal found 4/16![United Airlines logo]()
$212
This Delta deal was found by Cheapflights users on 4/17. 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.
qui 5/218:20 pm
PDX
- LAX
Nonstop2h 27m
Delta
ter 5/267:35 am
LAX
- PDX
Nonstop2h 22m
Delta
Deal found 4/17![Delta logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 4/13. 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.
ter 5/55:49 pm
PDX
- LAX
Nonstop2h 33m
Alaska Airlines
qui 5/72:17 pm
LAX
- PDX
Nonstop2h 32m
Alaska Airlines
Deal found 4/13![Alaska Airlines logo]()
$257
This Expedia deal was found by Cheapflights users on 4/12. 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.
sex 5/158:46 pm
PDX
- LAX
1 stop12h 17m
Frontier
seg 5/186:30 am
LAX
- PDX
1 stop10h 16m
Frontier
Deal found 4/12![Frontier logo]()
$260
This Southwest deal was found by Cheapflights users on 4/12. 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.
seg 5/115:00 am
PDX
- LAX
1 stop7h 35m
Southwest
qua 5/136:20 am
LAX
- PDX
2 stops7h 20m
Southwest
Deal found 4/12![Southwest logo]()
$278
This Delta deal was found by Cheapflights users on 4/13. 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.
sáb 5/236:50 am
PDX
- LAX
Nonstop2h 27m
Delta
dom 5/247:35 am
LAX
- PDX
Nonstop2h 22m
Delta
Deal found 4/13![Delta logo]()
$219
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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.
qui 5/219:26 pm
PDX
- LAX
Nonstop2h 31m
Alaska Airlines
ter 5/263:36 pm
LAX
- PDX
1 stop17h 53m
Alaska Airlines
Deal found 4/14![Alaska Airlines logo]()
$260
This United Airlines deal was found by Cheapflights users on 4/16. 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.
sáb 7/118:35 am
PDX
- LAX
1 stop7h 00m
United Airlines
ter 7/146:00 am
LAX
- PDX
1 stop4h 20m
United Airlines
Deal found 4/16![United Airlines logo]()
$267
This Southwest deal was found by Cheapflights users on 4/13. 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.
sáb 6/136:15 am
PDX
- LAX
2 stops8h 45m
Southwest
ter 6/168:10 am
LAX
- PDX
1 stop6h 30m
Southwest
Deal found 4/13![Southwest logo]()
$299
This United Airlines deal was found by Cheapflights users on 4/17. 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.
sex 6/265:15 am
PDX
- LAX
1 stop5h 19m
United Airlines
dom 7/56:00 am
LAX
- PDX
1 stop4h 20m
United Airlines
Deal found 4/17![United Airlines logo]()
$293
This Southwest deal was found by Cheapflights users on 4/13. 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.
sex 6/56:00 pm
PDX
- LAX
1 stop4h 10m
Southwest
dom 6/76:55 pm
LAX
- PDX
1 stop6h 05m
Southwest
Deal found 4/13![Southwest logo]()
$312
This United Airlines deal was found by Cheapflights users on 4/15. 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.
qua 6/105:15 am
PDX
- LAX
1 stop5h 19m
United Airlines
qua 6/106:45 pm
LAX
- PDX
1 stop6h 05m
United Airlines
Deal found 4/15![United Airlines logo]()
$299
Last-minute flights from Portland to RiversideDiscover last-minute flight deals from Portland to Riverside. Data last updated abril 17, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Riverside. Data last updated abril 17, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/13. 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.
qui 4/169:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
qui 4/239:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 4/13![Frontier logo]()
$148
This Frontier deal was found by Cheapflights users on 4/13. 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.
dom 4/199:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
qui 4/239:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 4/13![Frontier logo]()
$149
This Frontier deal was found by Cheapflights users on 4/12. 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.
qua 4/2912:38 pm
PDX
- LAX
1 stop10h 36m
Frontier
dom 5/39:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 4/12![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
sex 5/19:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
seg 5/49:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 4/17![Frontier logo]()
$145
This Super.com deal was found by Cheapflights users on 4/14. 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.
seg 5/412:45 pm
PDX
- LAX
1 stop4h 29m
Frontier
seg 5/119:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 4/14![Frontier logo]()
$151
This Frontier deal was found by Cheapflights users on 4/13. 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.
qui 5/75:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
sex 5/89:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 4/13![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 4/14. 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.
sex 5/88:46 pm
PDX
- LAX
2 stops12h 09m
Frontier
seg 5/119:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 4/14![Frontier logo]()
$156
This Expedia deal was found by Cheapflights users on 4/13. 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.
sáb 5/235:31 pm
PDX
- LAX
Nonstop2h 43m
Multiple Airlines
qua 5/278:00 am
LAX
- PDX
1 stop5h 50m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$152
This Frontier deal was found by Cheapflights users on 4/15. 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.
qui 5/285:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
sáb 5/309:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 4/15![Frontier logo]()
$147
This Trip.com deal was found by Cheapflights users on 4/17. 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.
qui 5/285:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
seg 6/19:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 4/17![Frontier logo]()
$153
This Frontier deal was found by Cheapflights users on 4/14. 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.
sex 5/295:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
ter 6/26:30 am
LAX
- PDX
1 stop10h 31m
Frontier
Deal found 4/14![Frontier logo]()
$155
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 abril 17, 2026.
Search for one-way flight options from Portland to Riverside. Find affordable one-way fares based on user searches. Data last updated abril 17, 2026.
This Super.com deal was found by Cheapflights users on 4/13. 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.
sex 5/158:46 pm
PDX
- LAX
1 stop12h 17m
Frontier
Deal found 4/13![Frontier logo]()
$95
This Frontier deal was found by Cheapflights users on 4/14. 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.
sáb 5/212:27 pm
PDX
- LAX
1 stop10h 47m
Frontier
Deal found 4/14![Frontier logo]()
$96
This Trip.com deal was found by Cheapflights users on 4/15. 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.
qua 4/2912:38 pm
PDX
- LAX
1 stop19h 03m
Frontier
Deal found 4/15![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
seg 5/188:46 pm
PDX
- LAX
2 stops24h 24m
Frontier
Deal found 4/16![Frontier logo]()
$98
This American Airlines deal was found by Cheapflights users on 4/14. 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.
ter 5/263:27 pm
PDX
- LAX
Nonstop2h 36m
American Airlines
Deal found 4/14![American Airlines logo]()
$99
This Frontier deal was found by Cheapflights users on 4/14. 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.
seg 4/279:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Deal found 4/14![Frontier logo]()
$100
This Super.com deal was found by Cheapflights users on 4/15. 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.
seg 4/209:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Deal found 4/15![Frontier logo]()
$102
This United Airlines deal was found by Cheapflights users on 4/16. 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.
qua 5/135:20 am
PDX
- LAX
1 stop4h 37m
United Airlines
Deal found 4/16![United Airlines logo]()
$104
This Super.com deal was found by Cheapflights users on 4/14. 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.
sex 5/19:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Deal found 4/14![Frontier logo]()
$105
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 abril 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $145 (Kiwi.com) |
One-way from | $95 (Super.com) |
Popular in | March |
Cheapest in | September |
Average price | $246 |
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 abril 17, 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
qua 5/13
5:20 am-9:57 am
1 stop4h 37m
Los Angeles
ter 5/19
8:05 pm-12:33 am
1 stop4h 28m
$212
Quickest round-trip
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
qui 5/21
8:20 pm-10:47 pm
Nonstop2h 27m
Los Angeles
ter 5/26
7:35 am-9:57 am
Nonstop2h 22m
$217
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
sáb 5/23
6:50 am-9:17 am
Nonstop2h 27m
Los Angeles
dom 5/24
7:35 am-9:57 am
Nonstop2h 22m
$219
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
ter 5/5
5:49 pm-8:22 pm
Nonstop2h 33m
Los Angeles
qui 5/7
2:17 pm-4:49 pm
Nonstop2h 32m
$257
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
sex 5/15
8:46 pm-9:03 am
1 stop12h 17m
Los Angeles
seg 5/18
6:30 am-4:46 pm
1 stop10h 16m
$260
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
qui 5/21
9:26 pm-11:57 pm
Nonstop2h 31m
Los Angeles
ter 5/26
3:36 pm-9:29 am
1 stop17h 53m
$260
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
sáb 7/11
8:35 am-3:35 pm
1 stop7h 00m
Los Angeles
ter 7/14
6:00 am-10:20 am
1 stop4h 20m
$267
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
seg 5/11
5:00 am-12:35 pm
1 stop7h 35m
Los Angeles
qua 5/13
6:20 am-1:40 pm
2 stops7h 20m
$278
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
sex 6/26
5:15 am-10:34 am
1 stop5h 19m
Los Angeles
dom 7/5
6:00 am-10:20 am
1 stop4h 20m
$293
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
sáb 6/13
6:15 am-3:00 pm
2 stops8h 45m
Los Angeles
ter 6/16
8:10 am-2:40 pm
1 stop6h 30m
$299
Showing 1-10 of 23 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
How far ahead should I book a flight from Portland to Riverside?
Use this chart to determine the optimal time to book a round-trip flight from Portland to Riverside. Price data was last updated on April 10, 2026.
To ensure you get the cheapest price possible for a flight from Portland to Riverside, you should look to book at least 90 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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 abril 17, 2026.
It’s typically best to fly out from Portland to Riverside in the evening. Doing so could potentially save you 21% on the flight price compared to flying in the afternoon, which is usually more expensive.
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 April 11, 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. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
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 abril 17, 2026.
The most flights from PDX to R1V are scheduled on a Friday (66 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (40 on average).
How much does it cost to fly round-trip from Portland to Riverside?
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 abril 17, 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.
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Overall
7.9
Entertainment
7.0
Comfort
7.8
Crew
8.5
Boarding
8.1
Food
7.0
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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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 abril 17, 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 abril 17, 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 9 airlines flying from Portland to Riverside
Discover the top 9 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 abril 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$49 | Average$158 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$54 | Average$152 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$83 | Average$242 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$88 | Average$244 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$142 | Average$284 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$148 | Average$263 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$154 | Average$255 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$158 | Average$245 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$292 | FlexibilityNo cancel fee | On-time63% |