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Costa Mesa

$70+ 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LAX
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Cheapflights Tip: The best prices from Portland to Costa Mesa are usually found in January or February, booked 57 days in advance, depart on a Thursday or Friday and return on a Saturday

Cheap 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 November 3, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$123
(Frontier)

One-way from

$70
(American Airlines)

Popular in

November

Cheapest in

January

Average price

$237
Provider with most accurate pricing for Portland-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Portland-Los Angeles flights.
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From Portland to Costa Mesa
Search Deals
One-way flight from Portland to Costa Mesa
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Portland to Costa Mesa

Cheapest flights from Portland to Costa Mesa
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 November 3, 2025.

This Frontier deal was found by Cheapflights users on 11/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:39 pmPDX - LAX
Nonstop2h 22mFrontier
Sat 12/272:07 pmLAX - PDX
Nonstop2h 37mFrontier
Deal found 11/2$123
This Mytrip deal was found by Cheapflights users on 11/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:14 amPDX - LAX
1 stop8h 38mFrontier
Sun 12/73:30 pmLAX - PDX
1 stop17h 06mFrontier
Deal found 11/2$124
This CheapOair deal was found by Cheapflights users on 11/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1212:55 pmPDX - LAX
1 stop11h 34mFrontier
Fri 2/209:35 amLAX - PDX
Nonstop2h 30mFrontier
Deal found 11/2$125
This Booking.com deal was found by Cheapflights users on 11/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/151:21 pmPDX - LAX
Nonstop2h 26mFrontier
Thu 11/203:18 pmLAX - PDX
1 stop21h 50mFrontier
Deal found 11/2$126
This Kiwi.com deal was found by Cheapflights users on 11/1. 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.
Sun 12/215:39 pmPDX - LAX
Nonstop2h 24mFrontier
Sat 12/272:07 pmLAX - PDX
Nonstop2h 37mFrontier
Deal found 11/1$127
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Sun 11/161:21 pmPDX - LAX
Nonstop2h 26mMultiple Airlines
Fri 11/216:00 amLAX - PDX
1 stop7h 08mMultiple Airlines
Deal found 11/2$129
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 11/173:26 pmPDX - LAX
1 stop8h 59mMultiple Airlines
Fri 11/216:00 amLAX - PDX
1 stop7h 08mMultiple Airlines
Deal found 11/2$132
This CheapOair deal was found by Cheapflights users on 11/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:39 pmPDX - LAX
Nonstop2h 24mFrontier
Tue 12/232:07 pmLAX - PDX
Nonstop2h 37mFrontier
Deal found 11/2$133
This CheapOair deal was found by Cheapflights users on 11/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/167:57 pmPDX - LAX
1 stop16h 12mFrontier
Mon 11/241:48 pmLAX - PDX
Nonstop2h 32mFrontier
Deal found 11/2$137

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 November 3, 2025.
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

Wed 12/3

7:15 am-11:00 am

1 stop3h 45m

Los Angeles

Fri 12/5

5:15 pm-10:30 pm

1 stop5h 15m

$183

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Wed 12/24

4:26 pm-7:03 pm

Nonstop2h 37m

Los Angeles

Thu 1/1

7:24 pm-10:01 pm

Nonstop2h 37m

$187

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Sat 12/27

9:45 pm-12:22 am

Nonstop2h 37m

Los Angeles

Tue 12/30

7:55 pm-10:24 pm

Nonstop2h 29m

$187

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Thu 12/25

9:45 pm-12:22 am

Nonstop2h 37m

Los Angeles

Tue 12/30

7:55 pm-10:24 pm

Nonstop2h 29m

$187

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Wed 12/24

2:47 pm-5:24 pm

Nonstop2h 37m

Los Angeles

Sun 12/28

7:55 pm-10:24 pm

Nonstop2h 29m

$187

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Tue 12/2

5:47 pm-11:23 am

1 stop17h 36m

Los Angeles

Wed 12/3

1:55 pm-4:30 pm

Nonstop2h 35m

$187

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Mon 12/22

5:48 pm-8:25 pm

Nonstop2h 37m

Los Angeles

Tue 12/30

7:55 pm-10:24 pm

Nonstop2h 29m

$187

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Wed 12/31

5:48 pm-8:25 pm

Nonstop2h 37m

Los Angeles

Thu 1/1

7:24 pm-10:01 pm

Nonstop2h 37m

$187

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Mon 12/22

5:48 pm-8:25 pm

Nonstop2h 37m

Los Angeles

Sat 12/27

7:55 pm-10:24 pm

Nonstop2h 29m

$187

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Wed 12/24

2:47 pm-5:24 pm

Nonstop2h 37m

Los Angeles

Fri 1/2

7:55 pm-10:24 pm

Nonstop2h 29m

$187

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/31

Showing 1-10 of 21 results
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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.
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

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 October 31, 2025.

The best time to book flights from Portland to Costa Mesa is 57 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, January is the cheapest month in which you can book a flight from Portland to Costa Mesa (average of $49). Flying from Portland to Costa Mesa in July is currently the most expensive (average of $89). 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 November 3, 2025.

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 November 2, 2025.

Travelers seeking maximum savings on their Portland to Costa Mesa flight should consider departing on Saturday evenings when fares are most often at their lowest. Wednesday 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 November 3, 2025.

The most flights from PDX to CM3 are scheduled on a Sunday (77 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (25 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 November 3, 2025.
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.
Alaska Airlines
8.0
Very good
11,235 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
11,235 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
7.9
Good
8,001 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,799 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
11,036 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.8
Fair
3,117 reviews
Alaska Airlines
8.0
Very good
11,235 reviews

Food

7.1

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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.

  • What airport do you fly from for flights from Portland to Costa Mesa?

    Most people fly from Portland (PDX) if they book a flight from Portland to Costa Mesa. On average, Portland has 39 outbound flights to Costa Mesa per day from 8 airlines. Portland is conveniently located just 6.0 mi from Portland’s city center.

  • How popular is this Portland to Costa Mesa flight route?

    The Portland to Costa Mesa flight path was viewed by 198 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Portland to Costa Mesa?

    Airlines like Southwest and Alaska Airlines fly from Portland to Costa Mesa in about 2h 37m. The time it takes to get you to your destination can typically vary by up to 1h 08m. There are 834 mi between Portland and Costa Mesa. This flight may include one or multiple stops.

  • What are the most reliable airlines from Portland to Costa Mesa?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Portland to Costa Mesa on time: Singapore Airlines (100%), SAUDIA (100%), Horizon Air (100%).

  • What are the cheapest flights from Portland to Costa Mesa?

    On average you can expect to pay $456 for a flight from Portland to Costa Mesa. The cheapest flight overall is $57 while the most popular route, (Portland - Los Angeles) is currently priced at $104.

  • Can I find deals for flights from Portland to Costa Mesa that include hotel bookings?

    Yes. In addition to deals on Portland to Costa Mesa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Costa Mesa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Costa Mesa.

  • Can I find deals for business class flights from Portland to Costa Mesa?

    Yes. Cheapflights offers flight deals from Portland to Costa Mesa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Costa Mesa?

    Currently, January is the cheapest month in which you can book a flight from Portland to Costa Mesa (average of $49). Flying from Portland to Costa Mesa in July is currently the most expensive (average of $89). 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.

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Alternative routes for Portland to Costa Mesa

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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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$54Average$143FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$83Average$191FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$88Average$248FlexibilityNo cancel feeOn-time85%
DeltaCheapest$93Average$287FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$147Average$280FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$148Average$312FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$156Average$321FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$158Average$312FlexibilityNo cancel feeOn-time63%

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