$71+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LAX
Mar 5 — Mar 121
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 February or May, 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 February 3, 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 February 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 3/79:24 am
PDX
- LAX
Nonstop2h 26m
Frontier
Thu 3/128:57 pm
LAX
- PDX
1 stop14h 12m
Frontier
Deal found 2/1![Frontier logo]()
$132
This Flightnetwork deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/27:16 pm
PDX
- LAX
Nonstop2h 26m
Frontier
Sun 3/89:20 am
LAX
- PDX
Nonstop2h 32m
Frontier
Deal found 2/1![Frontier logo]()
$133
This Orbitz deal was found by Cheapflights users on 2/2. 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 4/1611:48 am
PDX
- LAX
1 stop12h 23m
Frontier
Sun 4/199:20 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 2/2![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/610:08 am
PDX
- LAX
Nonstop2h 25m
Frontier
Sun 3/810:15 pm
LAX
- PDX
1 stop10h 43m
Frontier
Deal found 2/2![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 1/31. 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 2/277:38 pm
PDX
- LAX
Nonstop2h 26m
Multiple Airlines
Wed 3/411:00 am
LAX
- PDX
1 stop4h 48m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$137
This CheapOair deal was found by Cheapflights users on 2/1. 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 3/79:24 am
PDX
- LAX
Nonstop2h 26m
Frontier
Sun 3/86:15 am
LAX
- PDX
1 stop28h 54m
Frontier
Deal found 2/1![Frontier logo]()
$138
This Delta deal was found by Cheapflights users on 2/2. 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 3/45:10 pm
PDX
- LAX
Nonstop2h 24m
Delta
Tue 3/109:45 am
LAX
- PDX
Nonstop2h 29m
Delta
Deal found 2/2![Delta logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/310:30 am
PDX
- LAX
Nonstop2h 33m
Multiple Airlines
Sat 3/78:20 am
LAX
- PDX
Nonstop2h 36m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/910:08 am
PDX
- LAX
Nonstop2h 25m
Multiple Airlines
Tue 3/1010:50 am
LAX
- PDX
Nonstop2h 35m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$141
This Expedia deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/277:38 pm
PDX
- LAX
Nonstop2h 26m
Multiple Airlines
Mon 3/27:45 am
LAX
- PDX
1 stop8h 03m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$143
This Expedia deal was found by Cheapflights users on 2/2. 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.
Sun 4/55:14 pm
PDX
- LAX
Nonstop2h 26m
Multiple Airlines
Wed 4/81:57 pm
LAX
- PDX
Nonstop2h 33m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$144
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 February 3, 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 February 3, 2026.
This Delta deal was found by Cheapflights users on 2/2. 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.
Tue 3/177:58 pm
PDX
- LAX
Nonstop2h 36m
Delta
Tue 3/244:30 pm
LAX
- PDX
Nonstop2h 28m
Delta
Deal found 2/2![Delta logo]()
$139
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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 3/42:30 pm
PDX
- LAX
Nonstop2h 29m
Alaska Airlines
Mon 3/99:08 pm
LAX
- PDX
Nonstop2h 34m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$158
This Delta deal was found by Cheapflights users on 1/31. 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 2/281:02 pm
PDX
- LAX
Nonstop2h 21m
Delta
Tue 3/36:50 am
LAX
- PDX
Nonstop2h 25m
Delta
Deal found 1/31![Delta logo]()
$148
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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 3/32:30 pm
PDX
- LAX
Nonstop2h 29m
Alaska Airlines
Mon 3/99:08 pm
LAX
- PDX
Nonstop2h 34m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$167
This Delta deal was found by Cheapflights users on 2/2. 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.
Tue 2/241:02 pm
PDX
- LAX
Nonstop2h 21m
Delta
Sat 2/286:50 am
LAX
- PDX
Nonstop2h 25m
Delta
Deal found 2/2![Delta logo]()
$157
This Delta deal was found by Cheapflights users on 1/31. 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 2/215:10 pm
PDX
- LAX
Nonstop2h 24m
Delta
Sat 2/286:50 am
LAX
- PDX
Nonstop2h 25m
Delta
Deal found 1/31![Delta logo]()
$157
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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 3/73:52 pm
PDX
- LAX
1 stop7h 11m
Alaska Airlines
Wed 3/114:00 pm
LAX
- PDX
1 stop7h 44m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$177
This Delta deal was found by Cheapflights users on 1/31. 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.
Fri 4/37:58 pm
PDX
- LAX
Nonstop2h 36m
Delta
Tue 4/74:30 pm
LAX
- PDX
Nonstop2h 28m
Delta
Deal found 1/31![Delta logo]()
$158
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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 3/32:30 pm
PDX
- LAX
Nonstop2h 29m
Alaska Airlines
Tue 3/36:00 pm
LAX
- PDX
1 stop5h 44m
Alaska Airlines
Deal found 2/2![Alaska Airlines logo]()
$181
This Delta deal was found by Cheapflights users on 1/31. 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.
Thu 4/301:05 pm
PDX
- LAX
Nonstop2h 20m
Delta
Tue 5/57:40 am
LAX
- PDX
Nonstop2h 24m
Delta
Deal found 1/31![Delta logo]()
$158
This Delta deal was found by Cheapflights users on 1/31. 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.
Tue 3/36:25 am
PDX
- LAX
Nonstop2h 26m
Delta
Tue 3/31:45 pm
LAX
- PDX
Nonstop2h 25m
Delta
Deal found 1/31![Delta logo]()
$179
Last-minute flights from Portland to Costa MesaDiscover last-minute flight deals from Portland to Costa Mesa. Data last updated February 3, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Costa Mesa. Data last updated February 3, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 2/207:38 pm
PDX
- LAX
Nonstop2h 26m
Frontier
Sat 3/78:57 pm
LAX
- PDX
1 stop13h 12m
Frontier
Deal found 2/1![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 1/31. 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 2/277:38 pm
PDX
- LAX
Nonstop2h 26m
Multiple Airlines
Wed 3/411:00 am
LAX
- PDX
1 stop4h 48m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$137
This Expedia deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/277:38 pm
PDX
- LAX
Nonstop2h 26m
Multiple Airlines
Mon 3/27:45 am
LAX
- PDX
1 stop8h 03m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$143
This Flightnetwork deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/27:16 pm
PDX
- LAX
Nonstop2h 26m
Frontier
Sun 3/89:20 am
LAX
- PDX
Nonstop2h 32m
Frontier
Deal found 2/1![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/310:30 am
PDX
- LAX
Nonstop2h 33m
Multiple Airlines
Sat 3/78:20 am
LAX
- PDX
Nonstop2h 36m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$140
This Delta deal was found by Cheapflights users on 2/2. 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 3/45:10 pm
PDX
- LAX
Nonstop2h 24m
Delta
Tue 3/109:45 am
LAX
- PDX
Nonstop2h 29m
Delta
Deal found 2/2![Delta logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/610:08 am
PDX
- LAX
Nonstop2h 25m
Frontier
Sun 3/810:15 pm
LAX
- PDX
1 stop10h 43m
Frontier
Deal found 2/2![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 2/1. 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 3/79:24 am
PDX
- LAX
Nonstop2h 26m
Frontier
Sun 3/89:28 pm
LAX
- PDX
1 stop11h 45m
Frontier
Deal found 2/1![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/910:08 am
PDX
- LAX
Nonstop2h 25m
Multiple Airlines
Tue 3/1010:50 am
LAX
- PDX
Nonstop2h 35m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$141
This Expedia deal was found by Cheapflights users on 2/1. 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.
Thu 3/129:53 am
PDX
- LAX
Nonstop2h 26m
Multiple Airlines
Tue 3/172:08 pm
LAX
- PDX
Nonstop2h 33m
Multiple Airlines
Deal found 2/1![Multiple Airlines logo]()
$134
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 February 3, 2026.
Search for one-way flight options from Portland to Costa Mesa. Find affordable one-way fares based on user searches. Data last updated February 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 1/31. 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 4/2411:48 am
PDX
- LAX
1 stop23h 41m
Frontier
Deal found 1/31![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 1/31. 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 3/88:09 pm
PDX
- LAX
1 stop25h 21m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$72
This Frontier deal was found by Cheapflights users on 2/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/55:14 pm
PDX
- LAX
Nonstop2h 26m
Frontier
Deal found 2/1![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 3/210:18 pm
PDX
- LAX
1 stop9h 57m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 2/207:38 pm
PDX
- LAX
Nonstop2h 26m
Frontier
Deal found 2/2![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 2/2. 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 3/319:43 am
PDX
- LAX
1 stop9h 47m
Frontier
Deal found 2/2![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 1/31. 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 3/912:52 pm
PDX
- LAX
1 stop23h 47m
Frontier
Deal found 1/31![Frontier logo]()
$79
This Southwest deal was found by Cheapflights users on 2/3. 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 3/46:00 am
PDX
- LAX
1 stop7h 50m
Southwest
Deal found 2/3![Southwest logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 1/31. 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 3/16:56 pm
PDX
- LAX
1 stop12h 10m
Multiple Airlines
Deal found 1/31![Multiple Airlines logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 2/3. 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 2/99:22 pm
PDX
- LAX
1 stop11h 00m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$83
This Southwest deal was found by Cheapflights users on 2/1. 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 2/286:00 am
PDX
- LAX
1 stop3h 45m
Southwest
Deal found 2/1![Southwest logo]()
$84
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 February 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $132 (Kiwi.com) |
One-way from | $71 (Kiwi.com) |
Popular in | November |
Cheapest in | February |
Average price | $184 |
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 February 3, 2026.
Use the filters below to find and compare flights from Portland to Costa Mesa that are best for you.
Fly from
Portland
Fly to
Costa Mesa
Route
Depart
Return
Price
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Tue 3/17
7:58 pm-10:34 pm
Nonstop2h 36m
Los Angeles
Tue 3/24
4:30 pm-6:58 pm
Nonstop2h 28m
$139
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 2/28
1:02 pm-3:23 pm
Nonstop2h 21m
Los Angeles
Tue 3/3
6:50 am-9:15 am
Nonstop2h 25m
$148
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Tue 2/24
1:02 pm-3:23 pm
Nonstop2h 21m
Los Angeles
Sat 2/28
6:50 am-9:15 am
Nonstop2h 25m
$157
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 2/21
5:10 pm-7:34 pm
Nonstop2h 24m
Los Angeles
Sat 2/28
6:50 am-9:15 am
Nonstop2h 25m
$157
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Wed 3/4
2:30 pm-4:59 pm
Nonstop2h 29m
Los Angeles
Mon 3/9
9:08 pm-11:42 pm
Nonstop2h 34m
$158
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Fri 4/3
7:58 pm-10:34 pm
Nonstop2h 36m
Los Angeles
Tue 4/7
4:30 pm-6:58 pm
Nonstop2h 28m
$158
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Thu 4/30
1:05 pm-3:25 pm
Nonstop2h 20m
Los Angeles
Tue 5/5
7:40 am-10:04 am
Nonstop2h 24m
$158
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Tue 3/3
2:30 pm-4:59 pm
Nonstop2h 29m
Los Angeles
Mon 3/9
9:08 pm-11:42 pm
Nonstop2h 34m
$167
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 3/7
3:52 pm-11:03 pm
1 stop7h 11m
Los Angeles
Wed 3/11
4:00 pm-11:44 pm
1 stop7h 44m
$177
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Tue 3/3
6:25 am-8:51 am
Nonstop2h 26m
Los Angeles
Tue 3/3
1:45 pm-4:10 pm
Nonstop2h 25m
$179
Showing 1-10 of 22 results
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
How far ahead should I book a flight from Portland to Costa Mesa?
Use this chart to determine the optimal time to book a round-trip flight from Portland to Costa Mesa. Price data was last updated on January 30, 2026.
The best time to book flights from Portland to Costa Mesa is 90 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Portland to Costa Mesa?
Currently, October is the cheapest month in which you can book a flight from Portland to Costa Mesa (average of $50). Flying from Portland to Costa Mesa in November is currently the most expensive (average of $107). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
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 February 3, 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.
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 January 31, 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.
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 February 3, 2026.
The most flights from PDX to CM3 are scheduled on a Friday (62 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (27 on average).
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 February 3, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and Hawaiian 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.
Food
7.1
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Food
7.1
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Food
7.1
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Food
7.1
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Food
7.1
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Food
7.1
Comfort
7.8
Boarding
8.1
Entertainment
7.0
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
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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Alternative routes for Portland to Costa Mesa
See prices for flight routes from nearby airports that may be better suited for you.
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 February 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$39 | Average$149 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$57 | Average$168 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$82 | Average$241 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$83 | Average$265 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$137 | Average$262 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$142 | Average$299 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$148 | Average$315 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$158 | Average$300 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$161 | Average$245 | FlexibilityNo cancel fee | On-time62% |