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Costa Mesa

$120+ Cheap flights from Boston (BOS) 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LAX
Oct 29 — Nov 51
Wed 10/29
Wed 11/5
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Costa Mesa are usually found in September or January, booked 61 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Cheap flight deals from Boston to Costa Mesa

Keep the following information in mind while searching for Boston to Costa Mesa flight deals. Data was last updated September 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$207
(United Airlines)

One-way from

$120
(JetBlue)

Popular in

December

Cheapest in

September

Average price

$304
Provider with most accurate pricing for Boston Logan Intl-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Los Angeles flights.
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From Boston Logan Intl to Costa Mesa
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One-way flight from Boston Logan Intl to Costa Mesa
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Highest demand for flights based on searches. 3% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Boston to Costa Mesa

Cheapest flights from Boston to Costa Mesa
Explore the most affordable flight options available from Boston to Costa Mesa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 29, 2025.

This lastminute.com deal was found by Cheapflights users on 9/29. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/256:00 amBOS - LAX
Nonstop6h 27mJetBlue
Fri 10/319:49 pmLAX - BOS
Nonstop5h 31mJetBlue
Deal found 9/29$206
This United Airlines deal was found by Cheapflights users on 9/29. 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.
Fri 10/318:30 amBOS - LAX
Nonstop6h 35mUnited Airlines
Sun 11/1611:20 pmLAX - BOS
1 stop7h 10mUnited Airlines
Deal found 9/29$207
This Kiwi.com deal was found by Cheapflights users on 9/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/318:30 amBOS - LAX
Nonstop6h 35mUnited Airlines
Thu 11/610:51 pmLAX - BOS
Nonstop5h 29mUnited Airlines
Deal found 9/28$210
This Flysmarter deal was found by Cheapflights users on 9/27. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:00 amBOS - LAX
Nonstop6h 15mJetBlue
Fri 10/311:40 pmLAX - BOS
Nonstop5h 25mJetBlue
Deal found 9/27$211
This SmartFares deal was found by Cheapflights users on 9/26. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/256:17 amBOS - LAX
1 stop8h 17mSpirit Airlines
Sat 11/110:35 amLAX - BOS
1 stop9h 17mSpirit Airlines
Deal found 9/26$214
This flugladen.de deal was found by Cheapflights users on 9/27. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/317:59 pmBOS - LAX
Nonstop6h 33mJetBlue
Thu 11/66:04 amLAX - BOS
Nonstop5h 21mJetBlue
Deal found 9/27$215
This Trip.com deal was found by Cheapflights users on 9/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/217:00 amBOS - LAX
Nonstop6h 15mJetBlue
Tue 10/286:04 amLAX - BOS
Nonstop5h 21mJetBlue
Deal found 9/27$216
This United Airlines deal was found by Cheapflights users on 9/28. 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.
Fri 10/246:20 pmBOS - LAX
Nonstop6h 13mUnited Airlines
Fri 10/3110:51 pmLAX - BOS
Nonstop5h 29mUnited Airlines
Deal found 9/28$217
This Cheapflightsfares deal was found by Cheapflights users on 9/27. 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.
Tue 10/286:17 amBOS - LAX
1 stop7h 53mSpirit Airlines
Mon 11/39:36 pmLAX - BOS
1 stop10h 29mSpirit Airlines
Deal found 9/27$218
This Cheapflightsfares deal was found by Cheapflights users on 9/27. 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 10/246:17 amBOS - LAX
1 stop7h 53mSpirit Airlines
Mon 10/276:00 amLAX - BOS
1 stop9h 54mSpirit Airlines
Deal found 9/27$219
This Booking.com deal was found by Cheapflights users on 9/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/238:31 amBOS - LAX
1 stop15h 05mFrontier
Sun 10/262:27 pmLAX - BOS
1 stop15h 06mFrontier
Deal found 9/27$221
This JetBlue deal was found by Cheapflights users on 9/27. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/317:59 pmBOS - LAX
Nonstop6h 33mJetBlue
Wed 11/129:29 pmLAX - BOS
Nonstop5h 31mJetBlue
Deal found 9/27$222

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston 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 September 29, 2025.
Use the filters below to find and compare flights from Boston to Costa Mesa that are best for you.

Fly from

Boston

Fly to

Costa Mesa

Route

Depart

Return

Price

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Thu 10/30

6:15 am-9:43 am

Nonstop6h 28m

Los Angeles

Wed 11/5

10:53 am-7:27 pm

Nonstop5h 34m

$217

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Wed 11/12

7:59 pm-11:32 pm

Nonstop6h 33m

Los Angeles

Sat 11/15

9:29 pm-6:00 am

Nonstop5h 31m

$217

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Fri 10/24

5:24 pm-11:38 pm

1 stop9h 14m

Los Angeles

Fri 10/31

10:51 pm-7:20 am

Nonstop5h 29m

$223

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Mon 11/10

6:10 pm-9:47 pm

Nonstop6h 37m

Los Angeles

Thu 11/13

6:00 am-4:10 pm

1 stop7h 10m

$227

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Thu 10/30

6:00 am-11:39 am

1 stop8h 39m

Los Angeles

Sat 11/1

10:51 pm-7:20 am

Nonstop5h 29m

$227

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Wed 10/22

6:20 pm-9:33 pm

Nonstop6h 13m

Los Angeles

Sun 10/26

12:25 am-10:34 am

1 stop7h 09m

$227

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Wed 10/15

8:55 pm-12:17 am

Nonstop6h 22m

Los Angeles

Sat 11/8

3:30 pm-11:55 pm

Nonstop5h 25m

$252

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Mon 10/6

5:24 pm-11:38 pm

1 stop9h 14m

Los Angeles

Tue 10/7

11:20 pm-7:59 am

Nonstop5h 39m

$253

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Wed 10/15

7:30 am-10:41 am

Nonstop6h 11m

Los Angeles

Sun 10/19

10:55 pm-9:56 am

1 stop8h 01m

$257

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Sat 10/25

7:06 pm-1:41 am

1 stop9h 35m

Los Angeles

Tue 10/28

6:04 am-2:25 pm

Nonstop5h 21m

$259

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/27

Showing 1-10 of 24 results
1
2
3

Best time to book a flight from Boston to Costa Mesa

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

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

Use this chart to determine the optimal time to book a round-trip flight from Boston to Costa Mesa. Price data was last updated on September 26, 2025.

To ensure you get the cheapest price possible for a flight from Boston to Costa Mesa, you should look to book at least 61 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Boston to Costa Mesa (average of $246). Flying from Boston to Costa Mesa in March is currently the most expensive (average of $325). 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 BOS to CM3?

Find hourly flight availability from Boston 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 September 29, 2025.

When flying from Boston 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 Boston to Costa Mesa?

Use this chart to determine the cheapest time to fly round-trip from Boston to Costa Mesa. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Boston to Costa Mesa flight should consider departing on Tuesday evenings 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 Boston to Costa Mesa

Explore weekly flight availability from Boston 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 September 29, 2025.

The most flights from BOS to CM3 are scheduled on a Sunday (59 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (43 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 September 29, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Boston to Costa Mesa have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,964 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,964 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,924 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
JetBlue
7.2
Good
2,912 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Spirit Airlines
6.3
Okay
8,050 reviews
Delta
8.0
Very good
7,964 reviews

Food

7.3

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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

    For a flight from Boston to Costa Mesa, you will be flying from Logan Intl. Boston Logan Intl (BOS) is just 2.6 mi from the center of the city. Logan Intl is the only Boston airport and it handles 48 outbound flights to Costa Mesa per day. 10 airlines have flights to Costa Mesa from Boston Logan Intl on a regular basis.

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

    The Boston Logan Intl to Costa Mesa flight path was viewed by 103 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 Boston to Costa Mesa?

    A quick flight from Boston to Costa Mesa can take about 6h 28m. Delta provides one of the quickest options available for as low as $217. There are 2603 mi between Boston and Costa Mesa. This flight may include one or multiple stops.

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

    $123 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Southwest and United Airlines, with prices starting from $124 and $134, respectively.

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

    Consider China Eastern (90%), Icelandair (89%) or Air China (88%) when booking your flight. These represent the most reliable airlines when flying from Boston to Costa Mesa.

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

    The cheapest flight price from Boston to Costa Mesa is $104. On average you can expect to pay $895. The most popular route, (Boston Logan Intl - Los Angeles), can usually be booked for $197.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Boston to Costa Mesa (average of $246). Flying from Boston to Costa Mesa in March is currently the most expensive (average of $325). 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 Boston to Costa Mesa

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Top 10 airlines flying from Boston to Costa Mesa

Discover the top 10 airlines that operate flights from Boston 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 September 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$71Average$186FlexibilityNo cancel feeOn-time62%
Breeze AirwaysCheapest$88Average$172FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$109Average$255FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$118Average$356FlexibilityNo cancel feeOn-time62%
DeltaCheapest$129Average$410FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$187Average$397FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$191Average$440FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$206Average$430FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$208Average$423FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$256Average$423FlexibilityNo cancel feeOn-time71%

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