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Costa Mesa

$55+ 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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LAX
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 Tuesday

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 April 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$90
(Frontier)

One-way from

$57
(FlightHub)

Popular in

November

Cheapest in

January

Average price

$188
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. 8% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 17, 2025.

This Frontier deal was found by Cheapflights users on 4/16. 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.
Sun 5/251:24 pmPDX - LAX
Nonstop2h 23mFrontier
Thu 5/299:43 amLAX - PDX
Nonstop2h 41mFrontier
Deal found 4/16$90
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 5/281:24 pmPDX - LAX
Nonstop2h 23mMultiple Airlines
Sat 5/3110:30 amLAX - PDX
1 stop6h 15mMultiple Airlines
Deal found 4/15$100
This Booking.com deal was found by Cheapflights users on 4/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/301:37 pmPDX - LAX
1 stop7h 38mSpirit Airlines
Wed 6/410:30 amLAX - PDX
1 stop6h 15mSpirit Airlines
Deal found 4/16$147
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
Sat 5/102:40 pmPDX - LAX
Nonstop2h 29mHawaiian Airlines
Tue 5/132:16 pmLAX - PDX
Nonstop2h 27mHawaiian Airlines
Deal found 4/16$151
This Delta deal was found by Cheapflights users on 4/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/176:11 amPDX - LAX
Nonstop2h 24mDelta
Mon 5/197:00 amLAX - PDX
Nonstop2h 24mDelta
Deal found 4/16$157
This Alaska Airlines deal was found by Cheapflights users on 4/17. 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.
Wed 6/410:30 amPDX - LAX
Nonstop2h 27mAlaska Airlines
Wed 6/257:00 amLAX - PDX
Nonstop2h 23mAlaska Airlines
Deal found 4/17$168
This Southwest deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/105:10 amPDX - LAX
2 stops7h 55mSouthwest
Tue 5/133:15 pmLAX - PDX
1 stop3h 45mSouthwest
Deal found 4/15$178
This American Airlines deal was found by Cheapflights users on 4/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/82:00 pmPDX - LAX
Nonstop2h 27mAmerican Airlines
Fri 9/127:02 pmLAX - PDX
Nonstop2h 28mAmerican Airlines
Deal found 4/17$216

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 April 17, 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

Sun 5/25

1:24 pm-3:47 pm

Nonstop2h 23m

Los Angeles

Thu 5/29

9:43 am-12:24 pm

Nonstop2h 41m

$90

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Mon 5/19

4:42 pm-7:05 pm

Nonstop2h 23m

Los Angeles

Wed 5/28

10:30 am-4:45 pm

1 stop6h 15m

$96

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Sat 5/10

5:40 pm-6:51 am

1 stop13h 11m

Los Angeles

Thu 5/15

6:00 am-12:42 pm

1 stop6h 42m

$140

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Sat 5/10

2:40 pm-5:09 pm

Nonstop2h 29m

Los Angeles

Thu 5/15

11:20 am-1:47 pm

Nonstop2h 27m

$151

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Sat 5/17

6:11 am-8:35 am

Nonstop2h 24m

Los Angeles

Mon 6/2

7:00 am-9:24 am

Nonstop2h 24m

$157

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Sat 5/17

4:00 pm-10:39 pm

1 stop6h 39m

Los Angeles

Tue 5/20

9:33 pm-11:59 pm

Nonstop2h 26m

$167

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Sat 5/10

5:10 am-1:05 pm

2 stops7h 55m

Los Angeles

Tue 5/13

3:15 pm-7:00 pm

1 stop3h 45m

$178

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Wed 9/10

2:35 pm-8:08 pm

1 stop5h 33m

$55

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Thu 5/1

4:42 pm-7:05 pm

Nonstop2h 23m

$58

PortlandLos Angeles

PDX - LAX

PDXLAX

Portland

Sat 5/17

5:30 pm-7:58 pm

Nonstop2h 28m

$79

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 17 results
1
2

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 April 11, 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 $246). Flying from Portland to Costa Mesa in June is currently the most expensive (average of $328). 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 April 17, 2025.

When flying from Portland to Costa Mesa, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 30, 2025.

Travelers seeking maximum savings on their Portland to Costa Mesa flight should consider departing on Thursday afternoons when fares are most often at their lowest. Tuesday mornings 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 April 17, 2025.

The most flights from PDX to CM3 are scheduled on a Thursday (80 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (24 on average).

Rainfall in Costa Mesa by month

Plan your trip to Costa Mesa by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Costa Mesa ranges from 0.0 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. July is typically the driest time to visit Costa Mesa when rainfall is around 0.0 in.

Temperature in Costa Mesa by month

Plan your trip to Costa Mesa by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Costa Mesa, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

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 April 17, 2025.
Read through reviews of airlines operating flights from Portland to Costa Mesa, such as Alaska Airlines, Southwest and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Veronica,May 2024

IAD - LAX

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.
Alaska Airlines
8.0
Very good
9,882 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Veronica,May 2024

IAD - LAX

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.
Southwest
8.0
Very good
4,280 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Veronica,May 2024

IAD - LAX

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.
Delta
8.0
Very good
7,917 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Veronica,May 2024

IAD - LAX

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.
Hawaiian Airlines
7.9
Good
2,382 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Veronica,May 2024

IAD - LAX

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,882 reviews

Boarding

8.2

Overall

8.0

Food

7.1

Crew

8.5

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Veronica,May 2024

IAD - LAX

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

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 53 outbound flights to Costa Mesa per day from 9 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 232 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from Portland to Costa Mesa one-way?

    The cheapest airlines for a one-way flight from Portland to Costa Mesa are Spirit Airlines ($57), Frontier ($58), and Delta ($79).

  • 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: Condor (100%), Horizon Air (100%), China Eastern (100%).

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

    On average you can expect to pay $589 for a flight from Portland to Costa Mesa. The cheapest flight overall is $63 while the most popular route, (Portland - Los Angeles) is currently priced at $103.

  • 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 $246). Flying from Portland to Costa Mesa in June is currently the most expensive (average of $328). 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$39Average$130FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$48Average$120FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$88Average$277FlexibilityNo cancel feeOn-time85%
DeltaCheapest$88Average$281FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$138Average$257FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$152Average$358FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$156Average$307FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$188Average$376FlexibilityNo cancel feeOn-time63%

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