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Carlsbad

$120+ Cheap flights from Boston (BOS) to Carlsbad, 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 Carlsbad 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 Carlsbad

Keep the following information in mind while searching for Boston to Carlsbad 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 Carlsbad
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One-way flight from Boston Logan Intl to Carlsbad
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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 Carlsbad

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

This United Airlines 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 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
Thu 11/67:26 pmLAX - BOS
1 stop7h 30mUnited Airlines
Deal found 9/27$207
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 Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/248:55 pmBOS - LAX
Nonstop6h 22mDelta
Mon 10/279:00 pmLAX - BOS
Nonstop5h 35mDelta
Deal found 9/27$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
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/245:24 pmBOS - LAX
1 stop9h 14mUnited Airlines
Tue 10/288:20 amLAX - BOS
Nonstop5h 30mUnited Airlines
Deal found 9/27$223

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Carlsbad 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 Carlsbad that are best for you.

Fly from

Boston

Fly to

Carlsbad

Route

Depart

Return

Price

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Wed 1/28

7:00 am-10:56 am

Nonstop6h 56m

Los Angeles

Wed 3/4

9:20 pm-5:55 am

Nonstop5h 35m

$217

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Tue 12/9

6:00 am-9:34 am

Nonstop6h 34m

Los Angeles

Fri 1/9

2:00 pm-10:27 pm

Nonstop5h 27m

$217

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Sat 10/25

9:53 am-5:01 pm

1 stop10h 08m

Los Angeles

Mon 10/27

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

Fri 10/31

6:00 am-11:39 am

1 stop8h 39m

Los Angeles

Fri 10/31

12:25 am-10:34 am

1 stop7h 09m

$237

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Fri 10/31

7:59 pm-11:32 pm

Nonstop6h 33m

Los Angeles

Wed 11/12

6:00 am-4:37 pm

1 stop7h 37m

$254

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Fri 1/9

5:00 pm-11:58 pm

1 stop9h 58m

Los Angeles

Sat 1/17

8:40 pm-5:01 am

Nonstop5h 21m

$254

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Sat 1/17

6:00 am-9:33 am

Nonstop6h 33m

Los Angeles

Mon 1/19

11:20 pm-12:15 pm

1 stop9h 55m

$254

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Wed 1/14

7:00 am-3:42 pm

1 stop11h 42m

Los Angeles

Sat 1/24

9:30 am-11:59 pm

1 stop11h 29m

$256

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Sun 11/9

6:15 am-9:53 am

Nonstop6h 38m

Los Angeles

Wed 11/12

9:02 pm-5:30 am

Nonstop5h 28m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/27

Showing 1-10 of 23 results
1
2
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Best time to book a flight from Boston to Carlsbad

Have a flexible travel schedule? Discover the best time to fly to Carlsbad 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 Carlsbad

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

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

Booking 61 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boston to Carlsbad. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Boston to Carlsbad (average of $246). Flying from Boston to Carlsbad 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 C4D?

Find hourly flight availability from Boston to Carlsbad. 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.

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

What is the cheapest day to fly from Boston to Carlsbad?

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

Travelers seeking maximum savings on their Boston to Carlsbad 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 Carlsbad

Explore weekly flight availability from Boston to Carlsbad. 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 C4D 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 Carlsbad

Get insights into the airlines that provide service to Carlsbad. 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 Carlsbad. Reviews last updated September 29, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Boston to Carlsbad 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.
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

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

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

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

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

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

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

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

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

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

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

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 Carlsbad. 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 Carlsbad?

    If you book a flight to Carlsbad from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston. There are 48 flights from Logan Intl to Carlsbad per day from 11 different airlines.

  • How popular is this Boston to Carlsbad flight route?

    This flight path from Boston Logan Intl to Carlsbad 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 Carlsbad?

    For as low as $217, Delta can have you in Carlsbad from Boston in 6h 34m. Boston and Carlsbad are separated by a distance of 2603 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most reliable airlines from Boston to Carlsbad?

    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 Boston to Carlsbad on time: China Eastern (90%), Icelandair (89%), Air China (88%).

  • What are the cheapest flights from Boston to Carlsbad?

    On average you can expect to pay $895 for a flight from Boston to Carlsbad. The cheapest flight overall is $104 while the most popular route, (Boston Logan Intl - Los Angeles) is currently priced at $197.

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

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

  • How can I find direct flights from Boston to Carlsbad?

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

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

    Yes. Cheapflights offers flight deals from Boston to Carlsbad 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 Carlsbad?

    Currently, January is the cheapest month in which you can book a flight from Boston to Carlsbad (average of $246). Flying from Boston to Carlsbad 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 Carlsbad

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Top 10 airlines flying from Boston to Carlsbad

Discover the top 10 airlines that operate flights from Boston to Carlsbad. 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$190FlexibilityNo cancel feeOn-time62%
Breeze AirwaysCheapest$88Average$172FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$91Average$269FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$118Average$369FlexibilityNo cancel feeOn-time62%
DeltaCheapest$129Average$394FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$138Average$352FlexibilityNo cancel feeOn-time85%
Sun Country AirCheapest$142Average$316FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$191Average$453FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$206Average$426FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$208Average$414FlexibilityNo cancel feeOn-time69%

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