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Carlsbad

$132+ 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 8/16. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LAX
août 4 — août 111
lun. 8/4
lun. 8/11
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 juillet 30, 2025.

Round-trip from

$225
(Mytrip)

One-way from

$131
(CheapOair)

Popular in

December

Cheapest in

September

Average price

$402
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 ($10 potential savings vs. average RT price).
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Average for round-trip flights in July 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 juillet 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
mar. 8/196:30 amBOS - LAX
1 stop7h 47mSpirit Airlines
dim. 9/75:30 amLAX - BOS
1 stop14h 13mSpirit Airlines
Deal found 7/28$225
This JetBlue deal was found by Cheapflights users on 7/30. 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.
jeu. 9/49:00 amBOS - LAX
Nonstop6h 08mJetBlue
mar. 9/99:45 pmLAX - BOS
Nonstop5h 40mJetBlue
Deal found 7/30$228
This CheapOair deal was found by Cheapflights users on 7/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/196:30 amBOS - LAX
1 stop7h 47mMultiple Airlines
sam. 8/2310:35 pmLAX - BOS
1 stop8h 06mMultiple Airlines
Deal found 7/29$233
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 8/308:23 pmBOS - LAX
1 stop14h 06mAlaska Airlines
ven. 9/56:07 pmLAX - BOS
1 stop8h 53mAlaska Airlines
Deal found 7/28$242
This United Airlines deal was found by Cheapflights users on 7/30. 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.
jeu. 9/257:30 amBOS - LAX
Nonstop6h 11mUnited Airlines
mar. 9/308:15 amLAX - BOS
1 stop7h 41mUnited Airlines
Deal found 7/30$253
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 9/128:35 pmBOS - LAX
Nonstop6h 17mDelta
sam. 9/2011:20 amLAX - BOS
Nonstop5h 34mDelta
Deal found 7/29$257

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 juillet 30, 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

mar. 8/19

6:30 am-11:17 am

1 stop7h 47m

Los Angeles

dim. 9/7

5:30 am-10:43 pm

1 stop14h 13m

$225

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

jeu. 9/4

9:00 am-12:08 pm

Nonstop6h 08m

Los Angeles

mar. 9/9

9:45 pm-6:25 am

Nonstop5h 40m

$228

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

mar. 8/19

6:30 am-11:17 am

1 stop7h 47m

Los Angeles

sam. 8/23

10:35 pm-9:41 am

1 stop8h 06m

$233

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

sam. 8/30

8:23 pm-7:29 am

1 stop14h 06m

Los Angeles

ven. 9/5

4:48 pm-6:00 am

1 stop10h 12m

$242

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

jeu. 9/25

7:30 am-10:41 am

Nonstop6h 11m

Los Angeles

mar. 9/30

8:15 am-6:56 pm

1 stop7h 41m

$253

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

ven. 9/12

8:35 pm-11:52 pm

Nonstop6h 17m

Los Angeles

sam. 9/20

11:20 am-7:54 pm

Nonstop5h 34m

$257

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

sam. 8/16

6:30 am-11:17 am

1 stop7h 47m

$132

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

mer. 9/10

7:05 am-2:00 pm

2 stops9h 55m

$134

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

sam. 8/16

9:40 am-5:08 pm

1 stop10h 28m

$138

BostonLos Angeles

BOS - LAX

BOSLAX

Boston Logan Intl

ven. 9/12

8:35 pm-11:52 pm

Nonstop6h 17m

$139

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 14 results
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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 July 25, 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 $326). 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 juillet 30, 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. Saturday 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 juillet 30, 2025.

The most flights from BOS to C4D are scheduled on a Wednesday (65 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (29 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 juillet 30, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 47 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 95 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 Boston to Carlsbad one-way?

    One-way options have recently been found by users for as low as $131 on Spirit Airlines. Other airlines that offer cheap prices include Southwest from $134 and Frontier from $138 one-way.

  • 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: LATAM Airlines (88%), Japan Airlines (87%), TAP AIR PORTUGAL (85%).

  • What are the cheapest flights from Boston to Carlsbad?

    On average you can expect to pay $2,084 for a flight from Boston to Carlsbad. The cheapest flight overall is $118 while the most popular route, (Boston Logan Intl - Los Angeles) is currently priced at $178.

  • 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 $326). 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.

See more FAQs

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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 juillet 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$71Average$177FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$88Average$264FlexibilityNo cancel feeOn-time65%
Breeze AirwaysCheapest$92Average$234FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$140Average$345FlexibilityNo cancel feeOn-time85%
Sun Country AirCheapest$142Average$316FlexibilityNo cancel feeOn-time83%
DeltaCheapest$149Average$399FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$176Average$367FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$201Average$421FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$206Average$411FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$222Average$451FlexibilityNo cancel feeOn-time71%

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