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Carlsbad

$112+ Cheap flights from Boston (BOS) to Carlsbad, CA, 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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LAX
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
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 Wednesday or Thursday and return on a Tuesday

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 November 13, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$214
(United Airlines)

One-way from

$112
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$385
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. 4% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 13, 2025.

This United Airlines deal was found by Cheapflights users on 11/13. 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 12/37:15 amBOS - LAX
1 stop8h 50mUnited Airlines
Sun 12/78:24 amLAX - BOS
Nonstop5h 30mUnited Airlines
Deal found 11/13$214
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/239:54 pmBOS - LAX
1 stop14h 16mSpirit Airlines
Tue 12/212:19 amLAX - BOS
2 stops20h 34mSpirit Airlines
Deal found 11/12$215
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 11/269:54 pmBOS - LAX
1 stop26h 36mMultiple Airlines
Wed 12/173:30 pmLAX - BOS
2 stops15h 38mMultiple Airlines
Deal found 11/12$216
This JetBlue deal was found by Cheapflights users on 11/12. 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 12/58:30 pmBOS - LAX
Nonstop6h 29mJetBlue
Thu 12/1110:44 amLAX - BOS
Nonstop5h 20mJetBlue
Deal found 11/12$217
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 12/39:54 pmBOS - LAX
1 stop18h 17mMultiple Airlines
Sat 12/610:39 pmLAX - BOS
1 stop8h 43mMultiple Airlines
Deal found 11/12$218
This United Airlines deal was found by Cheapflights users on 11/12. 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 11/1911:45 amBOS - LAX
1 stop9h 12mUnited Airlines
Sat 12/610:55 pmLAX - BOS
Nonstop5h 31mUnited Airlines
Deal found 11/12$219
This Trip.com deal was found by Cheapflights users on 11/12. 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.
Wed 11/199:20 amBOS - LAX
Nonstop6h 29mJetBlue
Wed 11/266:45 amLAX - BOS
Nonstop5h 22mJetBlue
Deal found 11/12$220
This Kiwi.com deal was found by Cheapflights users on 11/13. 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 11/229:54 pmBOS - LAX
1 stop14h 16mMultiple Airlines
Wed 12/246:00 amLAX - BOS
1 stop16h 14mMultiple Airlines
Deal found 11/13$221
This United Airlines deal was found by Cheapflights users on 11/12. 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 11/198:30 amBOS - LAX
Nonstop6h 35mUnited Airlines
Wed 11/2610:51 pmLAX - BOS
Nonstop5h 29mUnited Airlines
Deal found 11/12$222
This Kiwi.com deal was found by Cheapflights users on 11/11. 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.
Sun 11/2310:46 amBOS - LAX
1 stop10h 37mFrontier
Wed 11/263:18 pmLAX - BOS
2 stops14h 54mFrontier
Deal found 11/11$223
This Southwest deal was found by Cheapflights users on 11/12. 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.
Tue 12/95:30 amBOS - LAX
1 stop8h 15mSouthwest
Sun 12/1410:35 amLAX - BOS
1 stop10h 05mSouthwest
Deal found 11/12$224

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 November 13, 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

Tue 1/6

8:42 pm-12:17 am

Nonstop6h 35m

Los Angeles

Tue 1/13

2:00 pm-10:27 pm

Nonstop5h 27m

$217

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Tue 12/9

5:30 am-10:45 am

1 stop8h 15m

Los Angeles

Sun 12/14

10:35 am-11:40 pm

1 stop10h 05m

$224

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Tue 1/6

7:30 am-11:22 am

Nonstop6h 52m

Los Angeles

Tue 1/13

9:45 pm-6:14 am

Nonstop5h 29m

$224

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Thu 2/5

7:30 am-2:18 pm

1 stop9h 48m

Los Angeles

Thu 2/19

7:00 am-3:28 pm

Nonstop5h 28m

$241

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Mon 12/8

6:00 am-9:34 am

Nonstop6h 34m

Los Angeles

Sun 12/14

10:40 pm-10:47 am

1 stop9h 07m

$244

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Tue 2/10

6:50 am-2:30 pm

2 stops10h 40m

Los Angeles

Wed 2/11

11:00 pm-12:10 pm

2 stops10h 10m

$247

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Wed 2/11

2:40 pm-10:00 pm

2 stops10h 20m

Los Angeles

Thu 2/19

5:50 am-10:55 pm

2 stops14h 05m

$253

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Wed 1/14

8:20 pm-11:56 pm

Nonstop6h 36m

Los Angeles

Wed 1/21

6:00 am-5:13 pm

1 stop8h 13m

$254

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Wed 1/28

8:20 pm-11:56 pm

Nonstop6h 36m

Los Angeles

Sun 2/1

7:00 am-6:45 pm

1 stop8h 45m

$254

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

Fri 12/5

8:30 pm-11:59 pm

Nonstop6h 29m

Los Angeles

Tue 12/9

1:30 pm-12:03 am

1 stop7h 33m

$255

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 24 results
1
2
3

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 November 7, 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 $114). Flying from Boston to Carlsbad in June is currently the most expensive (average of $163). 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 November 13, 2025.

One of the essential ways to save on airfare from Boston to Carlsbad is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 30% on airfare.

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 Monday afternoons when fares are most often at their lowest. Sunday at noon 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 November 13, 2025.

The most flights from BOS to C4D are scheduled on a Thursday (53 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (30 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 November 13, 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
7.9
Good
8,007 reviews

Overall

7.9

Crew

8.5

Comfort

7.9

Entertainment

7.9

Boarding

8.1

Food

7.3

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
8,007 reviews
Delta
7.9
Good
8,007 reviews

Overall

7.9

Crew

8.5

Comfort

7.9

Entertainment

7.9

Boarding

8.1

Food

7.3

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
9,017 reviews
Delta
7.9
Good
8,007 reviews

Overall

7.9

Crew

8.5

Comfort

7.9

Entertainment

7.9

Boarding

8.1

Food

7.3

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
11,051 reviews
Delta
7.9
Good
8,007 reviews

Overall

7.9

Crew

8.5

Comfort

7.9

Entertainment

7.9

Boarding

8.1

Food

7.3

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
2,907 reviews
Delta
7.9
Good
8,007 reviews

Overall

7.9

Crew

8.5

Comfort

7.9

Entertainment

7.9

Boarding

8.1

Food

7.3

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
8,139 reviews
Delta
7.9
Good
8,007 reviews

Overall

7.9

Crew

8.5

Comfort

7.9

Entertainment

7.9

Boarding

8.1

Food

7.3

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 44 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 97 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, JetBlue can have you in Carlsbad from Boston in 6h 35m. 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: KLM (92%), Icelandair (90%), Air China (90%).

  • What are the cheapest flights from Boston to Carlsbad?

    On average you can expect to pay $1,073 for a flight from Boston to Carlsbad. The cheapest flight overall is $108 while the most popular route, (Boston Logan Intl - Los Angeles) is currently priced at $143.

  • 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 $114). Flying from Boston to Carlsbad in June is currently the most expensive (average of $163). 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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$46Average$224FlexibilityNo cancel feeOn-time62%
Breeze AirwaysCheapest$88Average$172FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$99Average$272FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$108Average$364FlexibilityNo cancel feeOn-time62%
DeltaCheapest$129Average$404FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$138Average$353FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$184Average$401FlexibilityNo cancel feeOn-time75%
Sun Country AirCheapest$187Average$397FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$197Average$466FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$217Average$412FlexibilityNo cancel feeOn-time69%

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