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Costa Mesa

$48+ Cheap flights from Seattle (SEA) 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LAX
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Costa Mesa are usually found in January or September, booked 30 days in advance, depart on a Thursday or Friday and return on a Saturday

Cheap flight deals from Seattle to Costa Mesa

Keep the following information in mind while searching for Seattle to Costa Mesa flight deals. Data was last updated March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$97
(Cheapflightsfares)

One-way from

$48
(FlightHub)

Popular in

November

Cheapest in

January

Average price

$213
Provider with most accurate pricing for Seattle/Tacoma Intl-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Los Angeles flights.
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From Seattle/Tacoma Intl to Costa Mesa
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One-way flight from Seattle/Tacoma Intl to Costa Mesa
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Highest demand for flights based on searches. 10% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Seattle to Costa Mesa

Cheapest flights from Seattle to Costa Mesa
Explore the most affordable flight options available from Seattle to Costa Mesa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/252:30 pmSEA - LAX
Nonstop2h 53mSpirit Airlines
Mon 4/2810:32 amLAX - SEA
Nonstop2h 53mSpirit Airlines
Deal found 3/26$97
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/254:17 pmSEA - LAX
Nonstop2h 48mFrontier
Mon 4/285:35 pmLAX - SEA
Nonstop3h 00mFrontier
Deal found 3/27$98
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/247:35 pmSEA - LAX
Nonstop2h 52mMultiple Airlines
Sun 4/275:35 pmLAX - SEA
Nonstop3h 00mMultiple Airlines
Deal found 3/27$105
This Alaska 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/226:51 pmSEA - LAX
1 stop12h 32mAlaska Airlines
Wed 4/239:45 amLAX - SEA
Nonstop2h 58mAlaska Airlines
Deal found 3/27$177
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/222:00 pmSEA - LAX
Nonstop2h 45mDelta
Thu 4/248:15 pmLAX - SEA
Nonstop3h 01mDelta
Deal found 3/27$187
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 4/264:55 pmSEA - LAX
1 stop5h 00mSouthwest
Sat 5/34:05 pmLAX - SEA
1 stop4h 05mSouthwest
Deal found 3/27$192
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.
Wed 7/25:00 amSEA - LAX
1 stop5h 20mUnited Airlines
Mon 7/74:15 pmLAX - SEA
1 stop4h 41mUnited Airlines
Deal found 3/27$223
This Hawaiian 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/299:07 pmSEA - LAX
Nonstop2h 52mHawaiian Airlines
Thu 7/39:15 pmLAX - SEA
Nonstop2h 44mHawaiian Airlines
Deal found 3/27$237

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle 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 28, 2025.
Use the filters below to find and compare flights from Seattle to Costa Mesa that are best for you.

Fly from

Seattle

Fly to

Costa Mesa

Route

Depart

Return

Price

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Fri 4/25

2:30 pm-5:23 pm

Nonstop2h 53m

Los Angeles

Mon 4/28

10:32 am-1:25 pm

Nonstop2h 53m

$97

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Fri 4/25

4:17 pm-7:05 pm

Nonstop2h 48m

Los Angeles

Mon 4/28

5:35 pm-8:35 pm

Nonstop3h 00m

$98

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Thu 4/24

7:35 pm-10:27 pm

Nonstop2h 52m

Los Angeles

Sun 4/27

5:35 pm-8:35 pm

Nonstop3h 00m

$105

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sat 4/26

9:50 am-5:53 pm

1 stop8h 03m

Los Angeles

Sat 4/26

9:05 pm-11:55 pm

Nonstop2h 50m

$167

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Tue 4/22

2:00 pm-4:45 pm

Nonstop2h 45m

Los Angeles

Tue 4/29

7:00 am-9:58 am

Nonstop2h 58m

$177

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Sat 4/26

4:55 pm-9:55 pm

1 stop5h 00m

Los Angeles

Sat 5/3

4:05 pm-8:10 pm

1 stop4h 05m

$192

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Fri 6/20

6:25 am-9:20 am

Nonstop2h 55m

Los Angeles

Fri 7/4

4:15 pm-8:56 pm

1 stop4h 41m

$241

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Tue 4/8

8:04 pm-10:52 pm

Nonstop2h 48m

$48

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Thu 4/24

4:17 pm-7:05 pm

Nonstop2h 48m

$50

SeattleLos Angeles

SEA - LAX

SEALAX

Seattle/Tacoma Intl

Wed 4/30

10:10 am-12:56 pm

Nonstop2h 46m

$87

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 16 results
1
2

Best time to book a flight from Seattle to Costa Mesa

Have a flexible travel schedule? Discover the best time to fly to Costa Mesa from Seattle 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 Seattle to Costa Mesa

How far ahead should I book a flight from Seattle to Costa Mesa?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Costa Mesa. Price data was last updated on March 21, 2025.

The price you pay for your flight from Seattle to Costa Mesa may vary depending on when you book. For the best chance of a lower fare, look to book 30 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Seattle to Costa Mesa (average of $246). Flying from Seattle to Costa Mesa in March is currently the most expensive (average of $330). 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 SEA to CM3?

Find hourly flight availability from Seattle 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 28, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Costa Mesa as you normally would.

What is the cheapest day to fly from Seattle to Costa Mesa?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Costa Mesa. Price data was last updated on March 23, 2025.

Travelers seeking maximum savings on their Seattle to Costa Mesa flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Costa Mesa

Explore weekly flight availability from Seattle 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 28, 2025.

The most flights from SEA to CM3 are scheduled on a Thursday (120 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (48 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 March 28, 2025.
To help decide which airline to fly from Seattle to Costa Mesa, see what other customers have to say about Southwest, Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Crew

8.7

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.1
Very good
4,274 reviews
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Crew

8.7

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Crew

8.7

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,897 reviews
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Crew

8.7

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Hawaiian Airlines
7.9
Good
2,336 reviews
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Crew

8.7

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,274 reviews

Comfort

8.1

Crew

8.7

Food

7.1

Entertainment

7.6

Boarding

8.2

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Related info for your journey

Find useful and relevant information for your journey from Seattle 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 Seattle to Costa Mesa?

    Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Costa Mesa. You should not have trouble finding flights to Costa Mesa from Seattle/Tacoma Intl; the airport handles an average of 67 outbound flights to Costa Mesa per day. You should also have plenty of airline options to choose from since 9 airlines have flights from the Seattle airport to Costa Mesa. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

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

    The Seattle/Tacoma Intl to Costa Mesa flight path was viewed by 256 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 Seattle to Costa Mesa one-way?

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $48. Users have also found prices from $50 and $89 on Frontier and Hawaiian Airlines, respectively.

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

    No one likes to see their flight delayed. When booking a flight from Seattle to Costa Mesa consider choosing Aer Lingus (98%), KLM (97%) or Air China (96%) as they are the most reliable in getting you off to your destination on time.

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

    Looking for the cheapest flight from Seattle to Costa Mesa? While on average our users pay $1,102, our data indicates the cheapest price to be $43. The most popular route (Seattle/Tacoma Intl - Los Angeles), is priced around $97.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Costa Mesa?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Costa Mesa (average of $246). Flying from Seattle to Costa Mesa in March is currently the most expensive (average of $330). 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 Seattle to Costa Mesa

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Top 8 airlines flying from Seattle to Costa Mesa

Discover the top 8 airlines that operate flights from Seattle 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 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$39Average$128FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$40Average$125FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$78Average$265FlexibilityNo cancel feeOn-time85%
DeltaCheapest$117Average$267FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$136Average$267FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$150Average$314FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$156Average$359FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$157Average$317FlexibilityNo cancel feeOn-time71%
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