$100+ Cheap flights from Portland (PDX) to Costa Mesa, 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LAX
Aug 15 — Aug 221
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Costa Mesa 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 Costa Mesa 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 Costa Mesa
Cheapest
Best
Last-minute
One-way
Cheapest flights from Portland to Costa MesaExplore the most affordable flight options available from Portland to Costa Mesa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 16, 2026.
Explore the most affordable flight options available from Portland to Costa Mesa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 16, 2026.
This Super.com deal was found by Cheapflights users on 7/11. 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 8/175:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Fri 8/219:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 7/11![Frontier logo]()
$206
This Alaska Airlines deal was found by Cheapflights users on 7/13. 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.
Wed 8/191:53 pm
PDX
- LAX
Nonstop2h 29m
Alaska Airlines
Wed 8/267:03 am
LAX
- PDX
Nonstop2h 22m
Alaska Airlines
Deal found 7/13![Alaska Airlines logo]()
$207
This Orbitz deal was found by Cheapflights users on 7/11. 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 Orbitz 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
Sat 8/2911:11 am
LAX
- PDX
Nonstop2h 22m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$208
This CheapOair deal was found by Cheapflights users on 7/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:49 pm
PDX
- LAX
1 stop20h 31m
Frontier
Thu 8/209:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 7/14![Frontier logo]()
$209
This Alaska Airlines deal was found by Cheapflights users on 7/13. 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.
Wed 9/22:42 pm
PDX
- LAX
1 stop4h 25m
Alaska Airlines
Wed 9/92:15 pm
LAX
- PDX
Nonstop2h 21m
Alaska Airlines
Deal found 7/13![Alaska Airlines logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 7/14. 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.
Wed 8/195:56 pm
PDX
- LAX
1 stop6h 15m
Multiple Airlines
Mon 9/148:20 am
LAX
- PDX
1 stop5h 30m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 7/13. 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.
Fri 8/215:56 pm
PDX
- LAX
Nonstop2h 28m
Multiple Airlines
Sat 8/229:26 am
LAX
- PDX
1 stop7h 20m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$212
This CheapOair deal was found by Cheapflights users on 7/11. 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 CheapOair 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
Sat 10/178:51 pm
LAX
- PDX
1 stop19h 44m
Frontier
Deal found 7/11![Frontier logo]()
$213
This Super.com deal was found by Cheapflights users on 7/13. 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.
Sat 8/155:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Mon 8/179:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 7/13![Frontier logo]()
$214
This Alaska Airlines deal was found by Cheapflights users on 7/13. 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.
Wed 9/27:03 am
PDX
- LAX
Nonstop2h 44m
Alaska Airlines
Tue 9/88:20 am
LAX
- PDX
1 stop5h 30m
Alaska Airlines
Deal found 7/13![Alaska Airlines logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 7/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:49 pm
PDX
- LAX
1 stop14h 41m
Frontier
Thu 8/206:55 am
LAX
- PDX
1 stop5h 57m
Frontier
Deal found 7/15![Frontier logo]()
$216
This Delta deal was found by Cheapflights users on 7/13. 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.
Wed 9/25:35 pm
PDX
- LAX
Nonstop2h 23m
Delta
Thu 9/107:35 am
LAX
- PDX
Nonstop2h 18m
Delta
Deal found 7/13![Delta logo]()
$217
Best flights from Portland to Costa MesaDiscover carefully curated flight deals from Portland to Costa Mesa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 16, 2026.
Discover carefully curated flight deals from Portland to Costa Mesa that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 16, 2026.
This Alaska Airlines deal was found by Cheapflights users on 7/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/265:38 pm
PDX
- LAX
Nonstop2h 39m
Alaska Airlines
Wed 9/28:26 am
LAX
- PDX
Nonstop2h 24m
Alaska Airlines
Deal found 7/12![Alaska Airlines logo]()
$207
This Delta deal was found by Cheapflights users on 7/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/196:10 am
PDX
- LAX
Nonstop2h 22m
Delta
Wed 9/232:19 pm
LAX
- PDX
Nonstop2h 20m
Delta
Deal found 7/12![Delta logo]()
$207
This Southwest deal was found by Cheapflights users on 7/11. 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 8/257:50 am
PDX
- LAX
1 stop3h 45m
Southwest
Tue 9/19:25 am
LAX
- PDX
2 stops6h 00m
Southwest
Deal found 7/11![Southwest logo]()
$228
This Alaska Airlines deal was found by Cheapflights users on 7/11. 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 9/210:59 am
PDX
- LAX
Nonstop2h 39m
Alaska Airlines
Tue 9/86:15 pm
LAX
- PDX
Nonstop2h 21m
Alaska Airlines
Deal found 7/11![Alaska Airlines logo]()
$207
This Delta deal was found by Cheapflights users on 7/13. 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.
Wed 8/195:35 pm
PDX
- LAX
Nonstop2h 23m
Delta
Sun 8/237:35 am
LAX
- PDX
Nonstop2h 16m
Delta
Deal found 7/13![Delta logo]()
$222
This Southwest deal was found by Cheapflights users on 7/14. 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 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
Mon 8/246:00 pm
LAX
- PDX
1 stop3h 35m
Southwest
Deal found 7/14![Southwest logo]()
$232
This Alaska Airlines deal was found by Cheapflights users on 7/14. 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.
Sat 10/105:45 pm
PDX
- LAX
1 stop5h 59m
Alaska Airlines
Sat 10/172:24 pm
LAX
- PDX
1 stop6h 26m
Alaska Airlines
Deal found 7/14![Alaska Airlines logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 7/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:03 am
PDX
- LAX
1 stop6h 50m
Alaska Airlines
Mon 8/242:56 pm
LAX
- PDX
1 stop5h 55m
Alaska Airlines
Deal found 7/15![Alaska Airlines logo]()
$217
This Southwest deal was found by Cheapflights users on 7/11. 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 9/52:05 pm
PDX
- LAX
1 stop7h 10m
Southwest
Mon 9/76:10 am
LAX
- PDX
1 stop4h 45m
Southwest
Deal found 7/11![Southwest logo]()
$242
This Southwest deal was found by Cheapflights users on 7/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:20 am
PDX
- LAX
2 stops7h 50m
Southwest
Sat 9/53:30 pm
LAX
- PDX
1 stop5h 50m
Southwest
Deal found 7/15![Southwest logo]()
$242
This Alaska Airlines deal was found by Cheapflights users on 7/13. 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.
Thu 8/137:19 am
PDX
- LAX
1 stop4h 25m
Alaska Airlines
Sat 8/157:15 am
LAX
- PDX
1 stop13h 34m
Alaska Airlines
Deal found 7/13![Alaska Airlines logo]()
$223
This Southwest deal was found by Cheapflights users on 7/13. 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.
Fri 9/115:15 pm
PDX
- LAX
1 stop4h 15m
Southwest
Sun 9/135:10 pm
LAX
- PDX
1 stop3h 35m
Southwest
Deal found 7/13![Southwest logo]()
$252
Last-minute flights from Portland to Costa MesaDiscover last-minute flight deals from Portland to Costa Mesa. Data last updated July 16, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Costa Mesa. Data last updated July 16, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 7/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:49 pm
PDX
- LAX
1 stop20h 31m
Frontier
Thu 8/209:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 7/14![Frontier logo]()
$209
This Frontier deal was found by Cheapflights users on 7/11. 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 7/11![Frontier logo]()
$217
This CheapOair deal was found by Cheapflights users on 7/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:49 pm
PDX
- LAX
1 stop15h 41m
Frontier
Sun 8/169:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 7/15![Frontier logo]()
$213
This Super.com deal was found by Cheapflights users on 7/13. 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.
Sat 8/155:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Mon 8/179:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 7/13![Frontier logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 7/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:49 pm
PDX
- LAX
1 stop14h 41m
Frontier
Thu 8/206:55 am
LAX
- PDX
1 stop5h 57m
Frontier
Deal found 7/15![Frontier logo]()
$216
This Super.com deal was found by Cheapflights users on 7/11. 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 8/175:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Fri 8/219:15 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 7/11![Frontier logo]()
$206
This Alaska Airlines deal was found by Cheapflights users on 7/13. 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.
Wed 8/191:53 pm
PDX
- LAX
Nonstop2h 29m
Alaska Airlines
Wed 8/267:03 am
LAX
- PDX
Nonstop2h 22m
Alaska Airlines
Deal found 7/13![Alaska Airlines logo]()
$207
This Kiwi.com deal was found by Cheapflights users on 7/14. 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.
Wed 8/195:56 pm
PDX
- LAX
1 stop6h 15m
Multiple Airlines
Mon 9/148:20 am
LAX
- PDX
1 stop5h 30m
Multiple Airlines
Deal found 7/14![Multiple Airlines logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 7/13. 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.
Fri 8/215:56 pm
PDX
- LAX
Nonstop2h 28m
Multiple Airlines
Sat 8/229:26 am
LAX
- PDX
1 stop7h 20m
Multiple Airlines
Deal found 7/13![Multiple Airlines logo]()
$212
This Alaska Airlines deal was found by Cheapflights users on 7/14. 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.
Wed 8/265:38 pm
PDX
- LAX
Nonstop2h 39m
Alaska Airlines
Tue 9/18:33 am
LAX
- PDX
1 stop5h 13m
Alaska Airlines
Deal found 7/14![Alaska Airlines logo]()
$210
This Orbitz deal was found by Cheapflights users on 7/11. 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 Orbitz 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
Sat 8/2911:11 am
LAX
- PDX
Nonstop2h 22m
Multiple Airlines
Deal found 7/11![Multiple Airlines logo]()
$208
One-way flights from Portland to Costa MesaSearch for one-way flight options from Portland to Costa Mesa. Find affordable one-way fares based on user searches. Data last updated July 16, 2026.
Search for one-way flight options from Portland to Costa Mesa. Find affordable one-way fares based on user searches. Data last updated July 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/11. 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 10/135:35 pm
PDX
- LAX
1 stop14h 37m
Frontier
Deal found 7/11![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 7/11. 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 8/105:49 pm
PDX
- LAX
1 stop15h 41m
Frontier
Deal found 7/11![Frontier logo]()
$101
This Southwest deal was found by Cheapflights users on 7/11. 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 8/1510:40 am
PDX
- LAX
1 stop3h 55m
Southwest
Deal found 7/11![Southwest logo]()
$102
This Super.com deal was found by Cheapflights users on 7/15. 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.
Fri 9/45:56 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Deal found 7/15![Frontier logo]()
$103
This Southwest deal was found by Cheapflights users on 7/13. 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.
Wed 8/267:50 am
PDX
- LAX
1 stop3h 45m
Southwest
Deal found 7/13![Southwest logo]()
$104
This Frontier deal was found by Cheapflights users on 7/11. 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.
Wed 8/195:56 pm
PDX
- LAX
1 stop6h 15m
Frontier
Deal found 7/11![Frontier logo]()
$105
This Super.com deal was found by Cheapflights users on 7/14. 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.
Sat 7/255:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Deal found 7/14![Frontier logo]()
$106
This WAYA deal was found by Cheapflights users on 7/12. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/92:42 pm
PDX
- LAX
1 stop6h 19m
Multiple Airlines
Deal found 7/12![Multiple Airlines logo]()
$108
This Southwest deal was found by Cheapflights users on 7/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:00 am
PDX
- LAX
1 stop5h 15m
Southwest
Deal found 7/14![Southwest logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 7/11. 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 8/175:49 pm
PDX
- LAX
1 stop15h 40m
Frontier
Deal found 7/11![Frontier logo]()
$110
This Trip.com deal was found by Cheapflights users on 7/12. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/185:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Deal found 7/12![Frontier logo]()
$111
Find flight deals from Portland to Costa Mesa
Keep the following information in mind while searching for Portland to Costa Mesa flight deals. Data was last updated July 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $206 (Super.com) |
One-way from | $100 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $267 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland to Costa Mesa 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 16, 2026.
Use the filters below to find and compare flights from Portland to Costa Mesa that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Wed 8/26
5:38 pm-8:17 pm
Nonstop2h 39m
Los Angeles Los Angeles
Wed 9/2
8:26 am-10:50 am
Nonstop2h 24m
$207
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 9/19
6:10 am-8:32 am
Nonstop2h 22m
Los Angeles Los Angeles
Wed 9/23
2:19 pm-4:39 pm
Nonstop2h 20m
$207
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Wed 9/2
10:59 am-1:38 pm
Nonstop2h 39m
Los Angeles Los Angeles
Tue 9/8
6:15 pm-8:36 pm
Nonstop2h 21m
$207
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 10/10
5:45 pm-11:44 pm
1 stop5h 59m
Los Angeles Los Angeles
Sat 10/17
2:24 pm-8:50 pm
1 stop6h 26m
$217
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Mon 8/24
7:03 am-1:53 pm
1 stop6h 50m
Los Angeles Los Angeles
Mon 8/24
2:56 pm-8:51 pm
1 stop5h 55m
$217
Quickest round-trip
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Wed 8/19
5:35 pm-7:58 pm
Nonstop2h 23m
Los Angeles Los Angeles
Sun 8/23
7:35 am-9:51 am
Nonstop2h 16m
$222
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Thu 8/13
7:19 am-11:44 am
1 stop4h 25m
Los Angeles Los Angeles
Sat 8/15
7:15 am-8:49 pm
1 stop13h 34m
$223
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Tue 8/25
7:50 am-11:35 am
1 stop3h 45m
Los Angeles Los Angeles
Tue 9/1
9:25 am-3:25 pm
2 stops6h 00m
$228
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 8/22
6:00 am-11:30 am
1 stop5h 30m
Los Angeles Los Angeles
Mon 8/24
6:00 pm-9:35 pm
1 stop3h 35m
$232
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 9/5
2:05 pm-9:15 pm
1 stop7h 10m
Los Angeles Los Angeles
Mon 9/7
6:10 am-10:55 am
1 stop4h 45m
$242
Showing 1-10 of 23 resultsSorted by cheapest first
Best time to book a flight from Portland to Costa Mesa
Have a flexible travel schedule? Discover the best time to fly to Costa Mesa 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 Costa Mesa
PDX-CM3
PDX-LAX
What is the cheapest time of day to fly from PDX to CM3?
Find hourly flight availability from Portland to Costa Mesa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 16, 2026.
One of the essential ways to save on airfare from Portland to Costa Mesa is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 17% on airfare.
Weekly flight availability from Portland to Costa Mesa
Explore weekly flight availability from Portland to Costa Mesa. 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 16, 2026.
The most flights from PDX to CM3 are scheduled on a Monday (69 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (33 on average).
How much does it cost to fly round-trip from Portland to Costa Mesa?
What is the cheapest day to fly from Portland to Costa Mesa?
Use this chart to determine the cheapest time to fly round-trip from Portland to Costa Mesa. Price data was last updated on July 11, 2026.
Travelers seeking maximum savings on their Portland to Costa Mesa 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.
Reviews of airlines servicing Costa Mesa
Get insights into the airlines that provide service to Costa Mesa. 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 Costa Mesa. Reviews last updated July 16, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Delta, andHawaiian Airlines from Portland to Costa Mesa to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.9
Crew
8.5
Entertainment
7.0
Food
7.0
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Overall
7.9
Crew
8.5
Entertainment
7.0
Food
7.0
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Overall
7.9
Crew
8.5
Entertainment
7.0
Food
7.0
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Overall
7.9
Crew
8.5
Entertainment
7.0
Food
7.0
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Overall
7.9
Crew
8.5
Entertainment
7.0
Food
7.0
Boarding
8.1
Comfort
7.8
Reviews
1 / 20
8.0
ExcellentAnonymous,Nov 2025
PDX - BNA
Overall
7.9
Crew
8.5
Entertainment
7.0
Food
7.0
Boarding
8.1
Comfort
7.8
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 Costa Mesa. 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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Alternative routes for Portland to Costa Mesa
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Costa Mesa by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Portland to Costa Mesa by cabin class
Find flights from Portland to Costa Mesa, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Portland and Costa Mesa flights
Browse other Portland and Costa Mesa flight options. Last updated on July 16, 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 16, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Portland to Costa Mesa flights
Consider these flights traveling from Portland to Costa Mesa.
Top 8 airlines flying from Portland to Costa Mesa
Discover the top 8 airlines that operate flights from Portland to Costa Mesa. 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 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$49 | Average$169 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$83 | Average$290 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$88 | Average$241 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$137 | Average$280 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$142 | Average$354 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$158 | Average$272 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$309 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$168 | Average$336 | FlexibilityNo cancel fee | On-time71% |