$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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LAX
Apr 29 — May 61
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 May, 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 March 30, 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 March 30, 2026.
This Super.com deal was found by Cheapflights users on 3/30. 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 5/75:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Mon 5/119:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 3/30![Frontier logo]()
$142
This Frontier deal was found by Cheapflights users on 3/26. 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 4/1812:27 pm
PDX
- LAX
1 stop10h 47m
Frontier
Thu 4/239:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 3/26![Frontier logo]()
$144
This Expedia deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/66:19 pm
PDX
- LAX
1 stop25h 13m
Frontier
Sat 6/139:18 am
LAX
- PDX
Nonstop2h 23m
Frontier
Deal found 3/29![Frontier logo]()
$145
This Super.com deal was found by Cheapflights users on 3/27. 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 4/209:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Thu 4/239:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 3/27![Frontier logo]()
$146
This Super.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/249:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Sun 4/269:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 3/25![Frontier logo]()
$147
This Frontier deal was found by Cheapflights users on 3/27. 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 4/209:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Fri 4/249:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 3/27![Frontier logo]()
$148
This Super.com deal was found by Cheapflights users on 3/27. 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 4/249:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Sat 5/26:15 am
LAX
- PDX
1 stop28h 05m
Frontier
Deal found 3/27![Frontier logo]()
$149
This Frontier deal was found by Cheapflights users on 3/26. 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 6/45:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Fri 6/129:18 am
LAX
- PDX
Nonstop2h 23m
Frontier
Deal found 3/26![Frontier logo]()
$150
This Super.com deal was found by Cheapflights users on 3/29. 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 4/169:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Thu 4/239:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 3/29![Frontier logo]()
$151
This Super.com deal was found by Cheapflights users on 3/27. 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
Sun 5/249:20 am
LAX
- PDX
Nonstop2h 30m
Frontier
Deal found 3/27![Frontier logo]()
$152
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 March 30, 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 March 30, 2026.
This Alaska Airlines deal was found by Cheapflights users on 3/28. 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 5/99:32 pm
PDX
- LAX
Nonstop2h 27m
Alaska Airlines
Tue 5/127:45 pm
LAX
- PDX
Nonstop2h 33m
Alaska Airlines
Deal found 3/28![Alaska Airlines logo]()
$197
This Southwest deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/259:35 am
PDX
- LAX
2 stops8h 05m
Southwest
Mon 4/275:30 pm
LAX
- PDX
1 stop7h 25m
Southwest
Deal found 3/25![Southwest logo]()
$205
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Sat 7/257:00 am
PDX
- LAX
1 stop6h 55m
United Airlines
Tue 7/288:05 pm
LAX
- PDX
1 stop4h 45m
United Airlines
Deal found 3/27![United Airlines logo]()
$219
This Delta deal was found by Cheapflights users on 3/26. 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 4/146:45 am
PDX
- LAX
Nonstop2h 24m
Delta
Tue 4/217:40 am
LAX
- PDX
Nonstop2h 24m
Delta
Deal found 3/26![Delta logo]()
$263
This Southwest deal was found by Cheapflights users on 3/26. 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 5/75:00 am
PDX
- LAX
1 stop5h 15m
Southwest
Mon 5/117:50 pm
LAX
- PDX
1 stop5h 05m
Southwest
Deal found 3/26![Southwest logo]()
$222
This Alaska Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/249:30 pm
PDX
- LAX
Nonstop2h 29m
Alaska Airlines
Mon 9/282:05 pm
LAX
- PDX
Nonstop2h 22m
Alaska Airlines
Deal found 3/25![Alaska Airlines logo]()
$259
This Delta deal was found by Cheapflights users on 3/28. 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 4/151:05 pm
PDX
- LAX
Nonstop2h 20m
Delta
Tue 4/289:45 am
LAX
- PDX
Nonstop2h 23m
Delta
Deal found 3/28![Delta logo]()
$263
This United Airlines deal was found by Cheapflights users on 3/29. 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.
Thu 6/258:35 am
PDX
- LAX
1 stop5h 20m
United Airlines
Fri 7/38:10 pm
LAX
- PDX
1 stop4h 40m
United Airlines
Deal found 3/29![United Airlines logo]()
$279
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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 5/510:51 am
PDX
- LAX
1 stop10h 23m
Alaska Airlines
Thu 5/77:05 am
LAX
- PDX
Nonstop2h 33m
Alaska Airlines
Deal found 3/26![Alaska Airlines logo]()
$262
Last-minute flights from Portland to Costa MesaDiscover last-minute flight deals from Portland to Costa Mesa. Data last updated March 30, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Costa Mesa. Data last updated March 30, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 3/27. 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.
Tue 4/141:48 pm
PDX
- LAX
1 stop9h 26m
Frontier
Thu 4/169:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 3/27![Frontier logo]()
$154
This Super.com deal was found by Cheapflights users on 3/29. 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 4/169:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Thu 4/239:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 3/29![Frontier logo]()
$151
This Frontier deal was found by Cheapflights users on 3/26. 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 4/1812:27 pm
PDX
- LAX
1 stop10h 47m
Frontier
Thu 4/239:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 3/26![Frontier logo]()
$144
This Booking.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/199:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Sat 4/256:15 am
LAX
- PDX
1 stop28h 05m
Frontier
Deal found 3/25![Frontier logo]()
$145
This Super.com deal was found by Cheapflights users on 3/27. 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 4/209:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Thu 4/239:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 3/27![Frontier logo]()
$146
This Frontier deal was found by Cheapflights users on 3/27. 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 4/209:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Fri 4/249:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 3/27![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 3/26. 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 4/209:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Thu 5/78:27 pm
LAX
- PDX
1 stop23h 24m
Frontier
Deal found 3/26![Frontier logo]()
$152
This Frontier deal was found by Cheapflights users on 3/28. 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 4/249:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Fri 5/19:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 3/28![Frontier logo]()
$143
This Super.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/249:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Sun 4/269:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 3/25![Frontier logo]()
$147
This Super.com deal was found by Cheapflights users on 3/27. 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 4/249:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Sat 5/26:15 am
LAX
- PDX
1 stop28h 05m
Frontier
Deal found 3/27![Frontier logo]()
$149
This Super.com deal was found by Cheapflights users on 3/30. 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 4/279:54 am
PDX
- LAX
Nonstop2h 25m
Frontier
Fri 5/19:13 am
LAX
- PDX
Nonstop2h 37m
Frontier
Deal found 3/30![Frontier logo]()
$142
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 March 30, 2026.
Search for one-way flight options from Portland to Costa Mesa. Find affordable one-way fares based on user searches. Data last updated March 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:28 pm
PDX
- LAX
2 stops28h 46m
Frontier
Deal found 3/25![Frontier logo]()
$97
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 5/1412:35 pm
PDX
- LAX
1 stop11h 41m
Frontier
Deal found 3/29![Frontier logo]()
$98
This Priceline deal was found by Cheapflights users on 3/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/315:31 pm
PDX
- LAX
Nonstop2h 43m
Frontier
Deal found 3/27![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 5/37:46 pm
PDX
- LAX
1 stop26h 18m
Multiple Airlines
Deal found 3/27![Multiple Airlines logo]()
$100
This Southwest deal was found by Cheapflights users on 3/27. 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 4/181:35 pm
PDX
- LAX
2 stops7h 20m
Southwest
Deal found 3/27![Southwest logo]()
$101
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Tue 5/55:30 am
PDX
- LAX
1 stop4h 22m
United Airlines
Deal found 3/27![United Airlines logo]()
$104
This United Airlines deal was found by Cheapflights users on 3/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/275:15 am
PDX
- LAX
1 stop5h 19m
United Airlines
Deal found 3/28![United Airlines logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 5/177:46 pm
PDX
- LAX
1 stop25h 39m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$106
This CheapOair deal was found by Cheapflights users on 3/29. 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.
Tue 5/265:46 pm
PDX
- LAX
1 stop15h 09m
Frontier
Deal found 3/29![Frontier logo]()
$107
This Alaska Airlines deal was found by Cheapflights users on 3/30. 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 5/1210:30 am
PDX
- LAX
1 stop6h 16m
Alaska Airlines
Deal found 3/30![Alaska Airlines 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 March 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $142 (Super.com) |
One-way from | $97 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $268 |
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 March 30, 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
Sat 5/9
9:32 pm-11:59 pm
Nonstop2h 27m
Los Angeles
Tue 5/12
7:45 pm-10:18 pm
Nonstop2h 33m
$197
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 4/25
9:35 am-5:40 pm
2 stops8h 05m
Los Angeles
Mon 4/27
5:30 pm-12:55 am
1 stop7h 25m
$205
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Sat 7/25
7:00 am-1:55 pm
1 stop6h 55m
Los Angeles
Tue 7/28
8:05 pm-12:50 am
1 stop4h 45m
$219
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Thu 5/7
5:00 am-10:15 am
1 stop5h 15m
Los Angeles
Mon 5/11
7:50 pm-12:55 am
1 stop5h 05m
$222
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Thu 9/24
9:30 pm-11:59 pm
Nonstop2h 29m
Los Angeles
Mon 9/28
2:05 pm-4:27 pm
Nonstop2h 22m
$259
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Tue 5/5
10:51 am-9:14 pm
1 stop10h 23m
Los Angeles
Thu 5/7
7:05 am-9:38 am
Nonstop2h 33m
$262
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Tue 4/14
6:45 am-9:09 am
Nonstop2h 24m
Los Angeles
Tue 4/21
7:40 am-10:04 am
Nonstop2h 24m
$263
Quickest round-trip
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Wed 4/15
1:05 pm-3:25 pm
Nonstop2h 20m
Los Angeles
Tue 4/28
9:45 am-12:08 pm
Nonstop2h 23m
$263
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Thu 6/25
8:35 am-1:55 pm
1 stop5h 20m
Los Angeles
Fri 7/3
8:10 pm-12:50 am
1 stop4h 40m
$279
Cheapest one-way
PortlandLos Angeles
PDX - LAX
PDXLAX
Portland
Wed 5/13
5:20 am-9:57 am
1 stop4h 37m
$104
Showing 1-10 of 20 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
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 March 13, 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 March 30, 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 19% 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 March 23, 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 March 30, 2026.
The most flights from PDX to CM3 are scheduled on a Friday (65 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (36 on average).
How much does it cost to fly round-trip from Portland to Costa Mesa?
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 March 30, 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
Comfort
7.8
Overall
7.9
Food
7.0
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Overall
7.9
Food
7.0
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Overall
7.9
Food
7.0
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Overall
7.9
Food
7.0
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Overall
7.9
Food
7.0
Entertainment
7.0
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Boarding
8.1
Comfort
7.8
Overall
7.9
Food
7.0
Entertainment
7.0
Crew
8.5
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 March 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$49 | Average$168 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$54 | Average$157 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$83 | Average$248 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$88 | Average$240 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$137 | Average$260 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$142 | Average$305 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$148 | Average$261 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$158 | Average$245 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$158 | Average$300 | FlexibilityNo cancel fee | On-time63% |