San Diego

$137+ Cheap flights from Boston to San Diego (BOS - SAN)

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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAN
Apr 27 — May 41
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Boston Logan Intl to San Diego are usually found in January or October, booked 56 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Boston to San Diego

Cheapest flights from Boston to San Diego
Explore the most affordable flight options available from Boston to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 3/24. 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 4/286:00 am
BOS
-
SAN
Nonstop6h 24m
JetBlue
Tue 4/288:35 pm
SAN
-
BOS
Nonstop5h 29m
JetBlue
Deal found 3/24$232
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:44 pm
BOS
-
SAN
Nonstop6h 29m
Delta
Tue 5/129:49 pm
SAN
-
BOS
Nonstop5h 41m
Delta
Deal found 3/26$237
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:10 pm
BOS
-
SAN
1 stop8h 28m
Delta
Tue 4/289:59 pm
SAN
-
BOS
Nonstop5h 31m
Delta
Deal found 3/26$247
This Alaska Airlines deal was found by Cheapflights users on 3/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/55:56 pm
BOS
-
SAN
Nonstop6h 33m
Alaska Airlines
Wed 5/138:54 pm
SAN
-
BOS
Nonstop5h 50m
Alaska Airlines
Deal found 3/26$252
This Cheapflightsfares deal was found by Cheapflights users on 3/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/44:15 pm
BOS
-
SAN
Nonstop6h 18m
JetBlue
Tue 6/91:41 pm
SAN
-
BOS
Nonstop5h 42m
JetBlue
Deal found 3/26$258
This Southwest deal was found by Cheapflights users on 3/24. 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.
Thu 6/44:30 pm
BOS
-
SAN
Nonstop6h 10m
Southwest
Tue 6/92:35 pm
SAN
-
BOS
Nonstop5h 25m
Southwest
Deal found 3/24$261
This Southwest deal was found by Cheapflights users on 3/25. 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 5/55:35 am
BOS
-
SAN
2 stops9h 35m
Southwest
Tue 5/1212:00 pm
SAN
-
BOS
1 stop7h 40m
Southwest
Deal found 3/25$262
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:44 pm
BOS
-
SAN
Nonstop6h 29m
Delta
Sat 5/29:59 pm
SAN
-
BOS
Nonstop5h 31m
Delta
Deal found 3/26$263
This Southwest deal was found by Cheapflights users on 3/25. 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.
Wed 4/2212:55 pm
BOS
-
SAN
1 stop11h 25m
Southwest
Tue 4/287:40 pm
SAN
-
BOS
2 stops9h 35m
Southwest
Deal found 3/25$268
This Cheapflightsfares deal was found by Cheapflights users on 3/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/39:00 am
BOS
-
SAN
Nonstop6h 31m
JetBlue
Sun 6/78:44 pm
SAN
-
BOS
Nonstop5h 37m
JetBlue
Deal found 3/26$270

Find flight deals from Boston to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$232
(Cheapflightsfares)

One-way from

$134
(Southwest)

Popular in

December

Cheapest in

January

Average price

$353

Good round-trip deal

$296 or less

Good one-way deal

$198 or less
Provider with most accurate pricing for Boston Logan Intl-San Diego flight deals.
Provider most trusted by Cheapflights users for Boston Logan Intl-San Diego flights.
From Boston Logan Intl to San Diego
One-way flight from Boston Logan Intl to San Diego
Highest demand for flights based on searches. 3% potential increase in price ($12 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Average for round-trip flights in March 2026
Price to beat on a round-trip flight from Boston Logan Intl to San Diego.
Price to beat on a one-way flight from Boston Logan Intl to San Diego.

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to San Diego 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 March 28, 2026.
Use the filters below to find and compare flights from Boston to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 4/28

9:25 am-2:20 pm

1 stop7h 55m

San Diego

Tue 4/28

9:59 pm-6:30 am

Nonstop5h 31m

$247

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 5/6

5:44 pm-9:13 pm

Nonstop6h 29m

San Diego

Mon 5/11

9:49 pm-6:30 am

Nonstop5h 41m

$263

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Mon 5/4

5:56 pm-9:29 pm

Nonstop6h 33m

San Diego

Thu 5/14

8:54 pm-5:44 am

Nonstop5h 50m

$289

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 5/5

5:44 pm-9:13 pm

Nonstop6h 29m

San Diego

Sun 5/10

9:49 pm-6:30 am

Nonstop5h 41m

$297

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 6/4

4:30 pm-7:40 pm

Nonstop6h 10m

San Diego

Mon 6/8

7:50 pm-8:00 am

2 stops9h 10m

$300

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 5/6

7:00 am-3:53 pm

1 stop11h 53m

San Diego

Sat 5/9

8:07 am-4:53 pm

Nonstop5h 46m

$307

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 4/30

7:37 am-2:38 pm

1 stop10h 01m

San Diego

Sun 5/3

9:59 pm-6:30 am

Nonstop5h 31m

$311

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Fri 4/24

3:45 pm-11:10 pm

1 stop10h 25m

San Diego

Sat 5/9

6:25 am-6:45 pm

2 stops9h 20m

$316

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 7/21

5:10 pm-8:25 pm

Nonstop6h 15m

San Diego

Wed 7/29

9:53 pm-6:30 am

Nonstop5h 37m

$325

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Mon 4/27

3:45 pm-10:30 pm

2 stops9h 45m

San Diego

Tue 5/5

6:20 am-6:35 pm

2 stops9h 15m

$327

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 23 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Boston to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to San Diego in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to San Diego

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

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

Use this chart to determine the optimal time to book a round-trip flight from Boston to San Diego. Price data was last updated on March 13, 2026.

The price you pay for your flight from Boston to San Diego may vary depending on when you book. For the best chance of a lower fare, look to book 56 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, March is the cheapest month in which you can book a flight from Boston to San Diego (average of $118). Flying from Boston to San Diego in February is currently the most expensive (average of $197). 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 SAN?

Find hourly flight availability from Boston to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2026.

When flying from Boston to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Boston to San Diego?

The best insider tips for Boston to San Diego flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Boston to San Diego trip
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on SAN

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Paul Rubio

Paul Rubio

Expert on BOS

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated March 28, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Delta, andHawaiian Airlines from Boston to San Diego by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.

Comfort

7.8

Crew

8.5

Entertainment

7.0

Food

7.0

Overall

7.9

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

robert,Feb 2026

LAS - SAN

The good customer service team made you fell welcome on the flight.

Related info for your journey

Find useful and relevant information for your journey from Boston to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airports do I use to fly from Boston to San Diego?

    To fly from Boston to San Diego, you need to book a flight from Logan Intl (BOS) to San Diego (SAN). Nonstop flights to San Diego from Boston Logan Intl take 6h 05m on average. When it comes time to book airfare, you have a few options: there are 7 outbound flights from Logan Intl to San Diego offered by 8 different airlines.

  • How popular is this Boston to San Diego flight route?

  • How long is the flight from Boston to San Diego?

    Delta and Southwest can get you from Boston to San Diego in just under 6h 10m. Your travel time can differ by up to 1h 45m. There are 2581 mi between Boston and San Diego. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Boston to San Diego round-trip?

    Currently priced at $118, Hawaiian Airlines will fly you from Boston to San Diego and back. In addition to Hawaiian Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Spirit Airlines - these airlines can fly you to your destination from $131 and $140, respectively. Hawaiian Airlines is currently priced 67% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Boston to San Diego one-way?

    The cheapest airlines for a one-way flight from Boston to San Diego are Alaska Airlines ($118), JetBlue ($118), and Hawaiian Airlines ($118).

  • What are the most reliable airlines from Boston to San Diego?

    No one likes to see their flight delayed. When booking a flight from Boston to San Diego consider choosing Icelandair (89%), TAP AIR PORTUGAL (84%) or Etihad Airways (77%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Boston to San Diego?

    The cheapest flight price from Boston to San Diego is $132. On average you can expect to pay $570. The most popular route, (Boston Logan Intl - San Diego), can usually be booked for $232.

  • Where are the most common layover locations when flying from Boston to San Diego?

  • What are some popular things to do or see while on a layover in Phoenix?

    Most Phoenix visitors opt to spend their time experiencing Chase Field, Desert Ridge Marketplace, and Phoenix Symphony Hall. Chase Field, Desert Ridge Marketplace, and Phoenix Symphony Hall are located about 4.0 mi, 16.7 mi, and 4.3 mi, respectively from Phoenix Sky Harbor Intl. Travelers can book a car rental at Phoenix Sky Harbor Intl for about $58 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Boston to San Diego flights?

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

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

  • How can I find direct flights from Boston to San Diego?

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

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

    Yes. Cheapflights offers flight deals from Boston to San Diego 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 San Diego?

    Currently, March is the cheapest month in which you can book a flight from Boston to San Diego (average of $118). Flying from Boston to San Diego in February is currently the most expensive (average of $197). 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

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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Top 8 airlines flying from Boston to San Diego

Discover the top 8 airlines that operate flights from Boston to San Diego. 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 March 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$118Average$318FlexibilityNo cancel feeOn-time85%
DeltaCheapest$131Average$345FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$140Average$299FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$166Average$358FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$223Average$413FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$252Average$413FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$256Average$446FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$280Average$417FlexibilityNo cancel feeOn-time63%

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