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Costa Mesa

$101+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LAX
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Costa Mesa are usually found in January or September, booked 61 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

Cheap 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 February 12, 2026.

This United Airlines deal was found by Cheapflights users on 2/8. 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 3/108:21 am
BOS
-
LAX
Nonstop6h 44m
United Airlines
Tue 3/1710:39 pm
LAX
-
BOS
Nonstop5h 25m
United Airlines
Deal found 2/8$179
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Mon 3/26:07 pm
BOS
-
LAX
Nonstop6h 43m
United Airlines
Mon 3/912:25 am
LAX
-
BOS
1 stop9h 24m
United Airlines
Deal found 2/9$185
This Cheapflightsfares deal was found by Cheapflights users on 2/9. 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 3/37:55 pm
BOS
-
LAX
Nonstop6h 35m
JetBlue
Tue 3/1710:00 pm
LAX
-
BOS
Nonstop5h 20m
JetBlue
Deal found 2/9$188
This Delta deal was found by Cheapflights users on 2/9. 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 3/107:30 am
BOS
-
LAX
Nonstop6h 37m
Delta
Tue 3/179:15 pm
LAX
-
BOS
Nonstop5h 17m
Delta
Deal found 2/9$189
This JetBlue deal was found by Cheapflights users on 2/11. 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 5/19:36 pm
BOS
-
LAX
Nonstop6h 21m
JetBlue
Tue 5/52:00 pm
LAX
-
BOS
Nonstop5h 35m
JetBlue
Deal found 2/11$190
This JetBlue deal was found by Cheapflights users on 2/10. 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.
Mon 3/97:55 pm
BOS
-
LAX
Nonstop6h 35m
JetBlue
Tue 3/1710:00 pm
LAX
-
BOS
Nonstop5h 20m
JetBlue
Deal found 2/10$191
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 5/167:00 am
BOS
-
LAX
1 stop14h 39m
Multiple Airlines
Tue 5/198:54 pm
LAX
-
BOS
1 stop10h 27m
Multiple Airlines
Deal found 2/11$193
This United Airlines deal was found by Cheapflights users on 2/11. 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 5/25:45 am
BOS
-
LAX
1 stop8h 53m
United Airlines
Sat 5/910:43 pm
LAX
-
BOS
Nonstop5h 41m
United Airlines
Deal found 2/11$195
This Cheapflightsfares deal was found by Cheapflights users on 2/9. 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 2/247:55 pm
BOS
-
LAX
Nonstop6h 35m
JetBlue
Thu 3/1210:00 pm
LAX
-
BOS
Nonstop5h 20m
JetBlue
Deal found 2/9$197
This United Airlines deal was found by Cheapflights users on 2/9. 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 2/258:25 am
BOS
-
LAX
Nonstop6h 40m
United Airlines
Tue 3/38:15 am
LAX
-
BOS
Nonstop5h 26m
United Airlines
Deal found 2/9$198
This United Airlines deal was found by Cheapflights users on 2/10. 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 5/96:20 pm
BOS
-
LAX
Nonstop6h 35m
United Airlines
Tue 5/1210:43 pm
LAX
-
BOS
Nonstop5h 41m
United Airlines
Deal found 2/10$199

Find 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 February 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$179
(United Airlines)

One-way from

$101
(Mytrip)

Popular in

April

Cheapest in

January

Average price

$357
Provider with most accurate pricing for Boston Logan Intl-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Los Angeles flights.
Search Deals
From Boston Logan Intl to Costa Mesa
Search Deals
One-way flight from Boston Logan Intl to Costa Mesa
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($14 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 12, 2026.
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

Sat 5/2

6:20 pm-9:55 pm

Nonstop6h 35m

Los Angeles

Sat 5/9

10:43 pm-7:24 am

Nonstop5h 41m

$179

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Fri 5/1

9:36 pm-12:57 am

Nonstop6h 21m

Los Angeles

Tue 5/5

2:00 pm-10:35 pm

Nonstop5h 35m

$190

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Tue 3/10

11:15 am-2:57 pm

Nonstop6h 42m

Los Angeles

Mon 3/16

12:25 am-12:49 pm

1 stop9h 24m

$194

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Mon 5/4

4:33 pm-11:58 pm

1 stop10h 25m

Los Angeles

Wed 5/27

9:00 am-11:59 pm

1 stop11h 59m

$217

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Tue 3/3

1:20 pm-9:10 pm

1 stop10h 50m

Los Angeles

Tue 3/17

11:05 am-11:50 pm

1 stop9h 45m

$228

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Mon 3/2

5:20 pm-12:10 am

1 stop9h 50m

Los Angeles

Tue 3/31

9:55 pm-8:05 am

1 stop7h 10m

$228

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Thu 2/26

8:25 am-12:05 pm

Nonstop6h 40m

Los Angeles

Sat 2/28

12:25 am-10:49 am

1 stop7h 24m

$237

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Thu 3/12

8:50 pm-12:25 am

Nonstop6h 35m

Los Angeles

Wed 4/8

8:45 pm-5:18 am

Nonstop5h 33m

$238

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Mon 3/9

7:55 pm-11:30 pm

Nonstop6h 35m

Los Angeles

Wed 3/18

10:00 pm-6:20 am

Nonstop5h 20m

$238

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Sat 3/7

6:57 pm-9:01 am

1 stop17h 04m

Los Angeles

Tue 3/10

9:15 pm-5:32 am

Nonstop5h 17m

$246

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Showing 1-10 of 21 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 February 6, 2026.

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, August is the cheapest month in which you can book a flight from Boston to Costa Mesa (average of $115). Flying from Boston to Costa Mesa in April is currently the most expensive (average of $179). 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 February 12, 2026.

It’s typically best to fly out from Boston to Costa Mesa in the evening. Doing so could potentially save you 37% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 February 7, 2026.

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 February 12, 2026.

The most flights from BOS to CM3 are scheduled on a Wednesday (49 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 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 February 12, 2026.
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
7.9
Good
8,181 reviews

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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
7.9
Good
8,181 reviews
Delta
7.9
Good
8,181 reviews

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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
9,279 reviews
Delta
7.9
Good
8,181 reviews

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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
11,271 reviews
Delta
7.9
Good
8,181 reviews

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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
2,895 reviews
Delta
7.9
Good
8,181 reviews

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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
8,444 reviews
Delta
7.9
Good
8,181 reviews

Crew

8.5

Comfort

7.9

Overall

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

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 20 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 134 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 21m. United Airlines provides one of the quickest options available for as low as $190. 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?

    $73 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Spirit Airlines and JetBlue, with prices starting from $91 and $99, respectively.

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

    Consider Air China (79%), Korean Air (77%) or United Airlines (71%) 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 $100. On average you can expect to pay $1,008. The most popular route, (Boston Logan Intl - Los Angeles), can usually be booked for $174.

  • 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, August is the cheapest month in which you can book a flight from Boston to Costa Mesa (average of $115). Flying from Boston to Costa Mesa in April is currently the most expensive (average of $179). 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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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 February 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
Breeze AirwaysCheapest$85Average$154FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$91Average$182FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$92Average$236FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$99Average$358FlexibilityNo cancel feeOn-time62%
DeltaCheapest$143Average$430FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$180Average$345FlexibilityNo cancel feeOn-time83%
United AirlinesCheapest$183Average$409FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$214Average$441FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$226Average$425FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$236Average$341FlexibilityNo cancel feeOn-time75%

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