$97+ 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 6/19. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LAX
Jun 19 — Jun 261
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 January or August, booked 90 days in advance, depart on a Thursday or Friday 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 May 20, 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 May 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/16. 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.
Fri 6/55:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Sun 6/79:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 5/16![Frontier logo]()
$159
This Frontier deal was found by Cheapflights users on 5/18. 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 6/55:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Mon 6/89:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 5/18![Frontier logo]()
$163
This Frontier deal was found by Cheapflights users on 5/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Sat 6/69:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 5/16![Frontier logo]()
$164
This Frontier deal was found by Cheapflights users on 5/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/163:22 pm
PDX
- LAX
1 stop8h 41m
Frontier
Sat 9/2611:55 am
LAX
- PDX
Nonstop2h 32m
Frontier
Deal found 5/16![Frontier logo]()
$165
This Booking.com deal was found by Cheapflights users on 5/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/165:42 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Wed 7/228:15 pm
LAX
- PDX
1 stop21h 49m
Frontier
Deal found 5/18![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 5/15. 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.
Wed 8/55:16 pm
PDX
- LAX
1 stop6h 55m
Frontier
Thu 8/139:18 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 5/15![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 5/20. 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.
Sat 9/265:30 pm
PDX
- LAX
Nonstop2h 26m
Frontier
Mon 9/2811:55 am
LAX
- PDX
Nonstop2h 32m
Frontier
Deal found 5/20![Frontier logo]()
$168
This CheapOair deal was found by Cheapflights users on 5/18. 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 8/285:42 pm
PDX
- LAX
Nonstop2h 29m
Frontier
Wed 9/28:15 pm
LAX
- PDX
1 stop21h 09m
Frontier
Deal found 5/18![Frontier logo]()
$169
This Frontier deal was found by Cheapflights users on 5/18. 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 8/175:42 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Sat 8/229:18 am
LAX
- PDX
Nonstop2h 23m
Frontier
Deal found 5/18![Frontier logo]()
$170
This Frontier deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/412:26 pm
PDX
- LAX
1 stop11h 45m
Frontier
Sun 7/59:18 am
LAX
- PDX
Nonstop2h 20m
Frontier
Deal found 5/18![Frontier logo]()
$173
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 May 20, 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 May 20, 2026.
This Alaska Airlines deal was found by Cheapflights users on 5/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/112:39 pm
PDX
- LAX
Nonstop2h 27m
Alaska Airlines
Tue 8/117:34 pm
LAX
- PDX
1 stop4h 18m
Alaska Airlines
Deal found 5/17![Alaska Airlines logo]()
$226
This Southwest deal was found by Cheapflights users on 5/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:55 am
PDX
- LAX
1 stop4h 00m
Southwest
Tue 8/111:25 pm
LAX
- PDX
1 stop4h 50m
Southwest
Deal found 5/17![Southwest logo]()
$229
This Delta deal was found by Cheapflights users on 5/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:33 am
PDX
- LAX
Nonstop2h 27m
Delta
Mon 7/137:10 am
LAX
- PDX
Nonstop2h 18m
Delta
Deal found 5/15![Delta logo]()
$239
This United Airlines deal was found by Cheapflights users on 5/19. 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.
Fri 7/105:15 am
PDX
- LAX
1 stop5h 19m
United Airlines
Sun 7/126:00 am
LAX
- PDX
1 stop4h 20m
United Airlines
Deal found 5/19![United Airlines logo]()
$303
This Alaska Airlines deal was found by Cheapflights users on 5/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/119:27 pm
PDX
- LAX
Nonstop2h 29m
Alaska Airlines
Tue 7/148:20 am
LAX
- PDX
1 stop8h 27m
Alaska Airlines
Deal found 5/16![Alaska Airlines logo]()
$236
This Delta deal was found by Cheapflights users on 5/17. 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.
Sat 6/207:47 am
PDX
- LAX
Nonstop2h 33m
Delta
Wed 6/247:10 am
LAX
- PDX
Nonstop2h 24m
Delta
Deal found 5/17![Delta logo]()
$279
This Alaska Airlines deal was found by Cheapflights users on 5/17. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/259:27 pm
PDX
- LAX
Nonstop2h 29m
Alaska Airlines
Sun 8/27:00 am
LAX
- PDX
Nonstop2h 21m
Alaska Airlines
Deal found 5/17![Alaska Airlines logo]()
$258
This Southwest deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/187:25 am
PDX
- LAX
1 stop4h 20m
Southwest
Wed 6/243:40 pm
LAX
- PDX
1 stop6h 45m
Southwest
Deal found 5/18![Southwest logo]()
$297
This Southwest deal was found by Cheapflights users on 5/19. 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 7/315:20 pm
PDX
- LAX
1 stop4h 20m
Southwest
Sat 8/811:05 am
LAX
- PDX
1 stop5h 35m
Southwest
Deal found 5/19![Southwest logo]()
$299
This Delta deal was found by Cheapflights users on 5/18. 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 6/176:30 am
PDX
- LAX
Nonstop2h 30m
Delta
Sat 6/206:45 pm
LAX
- PDX
Nonstop2h 21m
Delta
Deal found 5/18![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 5/16. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/125:00 pm
PDX
- LAX
1 stop7h 05m
Southwest
Fri 6/197:35 pm
LAX
- PDX
1 stop5h 45m
Southwest
Deal found 5/16![Southwest logo]()
$299
This Southwest deal was found by Cheapflights users on 5/15. 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.
Fri 6/265:30 am
PDX
- LAX
1 stop6h 05m
Southwest
Sun 6/288:10 am
LAX
- PDX
1 stop5h 15m
Southwest
Deal found 5/15![Southwest logo]()
$308
Last-minute flights from Portland to Costa MesaDiscover last-minute flight deals from Portland to Costa Mesa. Data last updated May 20, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Costa Mesa. Data last updated May 20, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 5/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Sat 6/69:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 5/16![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 5/16. 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.
Tue 6/25:46 pm
PDX
- LAX
1 stop21h 50m
Frontier
Sat 6/69:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 5/16![Frontier logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 5/16. 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.
Fri 6/55:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Sun 6/79:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 5/16![Frontier logo]()
$159
This Frontier deal was found by Cheapflights users on 5/18. 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 6/55:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Mon 6/89:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 5/18![Frontier logo]()
$163
This Super.com deal was found by Cheapflights users on 5/18. 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 6/55:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Sat 6/69:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 5/18![Frontier logo]()
$173
This Frontier deal was found by Cheapflights users on 5/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/55:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Wed 8/196:30 am
LAX
- PDX
1 stop10h 27m
Frontier
Deal found 5/16![Frontier logo]()
$174
This Booking.com deal was found by Cheapflights users on 5/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/65:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Sun 6/76:30 am
LAX
- PDX
1 stop10h 16m
Frontier
Deal found 5/17![Frontier logo]()
$178
This Super.com deal was found by Cheapflights users on 5/19. 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 6/195:42 pm
PDX
- LAX
Nonstop2h 29m
Frontier
Sat 6/209:18 am
LAX
- PDX
Nonstop2h 23m
Frontier
Deal found 5/19![Frontier logo]()
$168
This Frontier deal was found by Cheapflights users on 5/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/195:42 pm
PDX
- LAX
Nonstop2h 29m
Frontier
Sat 7/49:18 am
LAX
- PDX
Nonstop2h 23m
Frontier
Deal found 5/16![Frontier logo]()
$170
This Frontier deal was found by Cheapflights users on 5/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/225:42 pm
PDX
- LAX
Nonstop2h 29m
Frontier
Sat 7/49:18 am
LAX
- PDX
Nonstop2h 23m
Frontier
Deal found 5/16![Frontier logo]()
$169
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 May 20, 2026.
Search for one-way flight options from Portland to Costa Mesa. Find affordable one-way fares based on user searches. Data last updated May 20, 2026.
This Super.com deal was found by Cheapflights users on 5/18. 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 6/195:42 pm
PDX
- LAX
Nonstop2h 29m
Frontier
Deal found 5/18![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/95:42 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Deal found 5/19![Frontier logo]()
$98
This Frontier deal was found by Cheapflights users on 5/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/175:36 pm
PDX
- LAX
Nonstop2h 28m
Frontier
Deal found 5/20![Frontier logo]()
$100
This Expedia deal was found by Cheapflights users on 5/18. 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 8/125:16 pm
PDX
- LAX
1 stop15h 14m
Frontier
Deal found 5/18![Frontier logo]()
$101
This Super.com deal was found by Cheapflights users on 5/18. 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 5/235:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Deal found 5/18![Frontier logo]()
$102
This Super.com deal was found by Cheapflights users on 5/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/285:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Deal found 5/20![Frontier logo]()
$103
This Frontier deal was found by Cheapflights users on 5/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/295:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Deal found 5/20![Frontier logo]()
$104
This Super.com deal was found by Cheapflights users on 5/18. 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 6/15:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Deal found 5/18![Frontier logo]()
$107
This Super.com deal was found by Cheapflights users on 5/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/45:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Deal found 5/19![Frontier logo]()
$109
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 May 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $159 (Kiwi.com) |
One-way from | $97 (Super.com) |
Popular in | March |
Cheapest in | January |
Average price | $237 |
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 May 20, 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
Tue 8/11
2:39 pm-5:06 pm
Nonstop2h 27m
Los Angeles
Tue 8/11
7:34 pm-11:52 pm
1 stop4h 18m
$226
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Tue 8/11
6:55 am-10:55 am
1 stop4h 00m
Los Angeles
Tue 8/11
1:25 pm-6:15 pm
1 stop4h 50m
$229
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 7/11
9:27 pm-11:56 pm
Nonstop2h 29m
Los Angeles
Tue 7/14
8:20 am-4:47 pm
1 stop8h 27m
$236
Quickest round-trip
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Wed 7/8
6:33 am-9:00 am
Nonstop2h 27m
Los Angeles
Mon 7/13
7:10 am-9:28 am
Nonstop2h 18m
$239
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 7/25
9:27 pm-11:56 pm
Nonstop2h 29m
Los Angeles
Sun 8/2
7:00 am-9:21 am
Nonstop2h 21m
$258
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 6/20
7:47 am-10:20 am
Nonstop2h 33m
Los Angeles
Wed 6/24
7:10 am-9:34 am
Nonstop2h 24m
$279
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Thu 6/18
7:25 am-11:45 am
1 stop4h 20m
Los Angeles
Wed 6/24
3:40 pm-10:25 pm
1 stop6h 45m
$297
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Fri 7/31
5:20 pm-9:40 pm
1 stop4h 20m
Los Angeles
Sat 8/8
11:05 am-4:40 pm
1 stop5h 35m
$299
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Fri 6/12
5:00 pm-12:05 am
1 stop7h 05m
Los Angeles
Fri 6/19
7:35 pm-1:20 am
1 stop5h 45m
$299
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Fri 7/10
5:15 am-10:34 am
1 stop5h 19m
Los Angeles
Sun 7/12
6:00 am-10:20 am
1 stop4h 20m
$303
Showing 1-10 of 24 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 May 20, 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 afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 16% 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 May 20, 2026.
The most flights from PDX to CM3 are scheduled on a Monday (63 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (31 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 May 16, 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 May 20, 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.
Boarding
8.1
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Food
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Food
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Food
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Food
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
Food
7.0
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Overall
7.9
Crew
8.5
Comfort
7.8
Entertainment
7.0
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 Costa Mesa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Portland and Costa Mesa flights
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Top 9 airlines flying from Portland to Costa Mesa
Discover the top 9 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 May 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$51 | Average$166 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$54 | Average$145 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$83 | Average$266 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$88 | Average$242 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$137 | Average$270 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$142 | Average$320 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$150 | Average$273 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$158 | Average$258 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$312 | FlexibilityNo cancel fee | On-time63% |