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$129 Cheap Flights from Boston (BOS) to San Diego (SAN)

View $129 flight on Sat, Jan 9, 2027Opens in a new window

Popular airlines from Logan International Airport (BOS) to San Diego Intl. Airport (SAN)

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Cheap Flights from Boston to San Diego (BOS-SAN)

Prices were available within the past 7 days and start at $129 for one-way flights and $257 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Feb 6 - Sat, Feb 13
BOS
Boston
SAN
San Diego
$257 Roundtrip, just found
$257
Roundtrip
just found
Select Delta flight, departing Sat, Feb 6 from Boston to San Diego, returning Sat, Feb 13, priced at $257 just found
Southwest Airlines
Thu, Oct 29 - Tue, Nov 3
BOS
Boston
SAN
San Diego
$257 Roundtrip, just found
$257
Roundtrip
just found
Select Southwest Airlines flight, departing Thu, Oct 29 from Boston to San Diego, returning Tue, Nov 3, priced at $257 just found
Delta
Thu, Oct 29 - Tue, Nov 3
BOS
Boston
SAN
San Diego
$262 Roundtrip, just found
$262
Roundtrip
just found
Select Delta flight, departing Thu, Oct 29 from Boston to San Diego, returning Tue, Nov 3, priced at $262 just found
Southwest Airlines
Thu, Oct 29 - Tue, Nov 3
BOS
Boston
SAN
San Diego
$267 Roundtrip, just found
$267
Roundtrip
just found
Select Southwest Airlines flight, departing Thu, Oct 29 from Boston to San Diego, returning Tue, Nov 3, priced at $267 just found
Alaska Airlines
Sun, Sep 6 - Fri, Sep 11
BOS
Boston
SAN
San Diego
$267 Roundtrip, found 4 hours ago
$267
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Sun, Sep 6 from Boston to San Diego, returning Fri, Sep 11, priced at $267 found 4 hours ago
Alaska Airlines
Fri, Oct 30 - Thu, Nov 5
BOS
Boston
SAN
San Diego
$268 Roundtrip, found 3 days ago
$268
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Fri, Oct 30 from Boston to San Diego, returning Thu, Nov 5, priced at $268 found 3 days ago
Delta
Fri, Sep 4 - Sun, Sep 6
BOS
Boston
SAN
San Diego
$269 Roundtrip, found 1 hour ago
$269
Roundtrip
found 1 hour ago
Select Delta flight, departing Fri, Sep 4 from Boston to San Diego, returning Sun, Sep 6, priced at $269 found 1 hour ago
Southwest Airlines
Sat, Sep 26 - Sat, Oct 3
BOS
Boston
SAN
San Diego
$270 Roundtrip, just found
$270
Roundtrip
just found
Select Southwest Airlines flight, departing Sat, Sep 26 from Boston to San Diego, returning Sat, Oct 3, priced at $270 just found
American Airlines
Wed, Sep 9 - Sun, Sep 13
BOS
Boston
SAN
San Diego
$272 Roundtrip, just found
$272
Roundtrip
just found
Select American Airlines flight, departing Wed, Sep 9 from Boston to San Diego, returning Sun, Sep 13, priced at $272 just found
United
Wed, Aug 19 - Tue, Aug 25
BOS
Boston
SAN
San Diego
$272 Roundtrip, just found
$272
Roundtrip
just found
Select United flight, departing Wed, Aug 19 from Boston to San Diego, returning Tue, Aug 25, priced at $272 just found

Alternative airports near San Diego

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to General Abelardo L. Rodriguez Intl. TIJ. Average driving time to city center is 26 minutes. Flights from $883
TIJ
General Abelardo L. Rodriguez Intl.
Average driving time to city center26 min
Flights from $883
Select flight to McClellan-Palomar CLD. Average driving time to city center is 38 minutes. Flights from $915
CLD
McClellan-Palomar
Average driving time to city center38 min
Flights from $915

Find the cheapest month to fly from Boston (BOS) to San Diego (SAN)

February is typically the cheapest month to fly

From $197 - $313 per traveler.

What you need to know for your flight from Logan Intl. to San Diego Intl.

Boston (BOS) to San Diego (SAN) at a glance

Travel from Boston (BOS) to San Diego (SAN) with a range of airlines on this domestic long-haul route. Whether you're looking for budget-friendly options or full-service carriers, you can compare san diego flights to find the best itinerary that suits your budget and schedule. Discover key information about flight times and details for your trip from Logan International Airport to San Diego International Airport as you prepare to explore the vibrant sights and neighborhoods of San Diego.

  • Fastest flight duration: around 6h 30m non-stop
  • Route distance: roughly 2,600 miles (4,180 km)
  • Flights per week: around 55+ flights with multiple daily departures on average
  • Typical fares (one-way): economy tickets often range from $110–$425, depending on seasonality and how far ahead you book

Flights from Logan International Airport (BOS) to San Diego International Airport (SAN)

Based on the latest traveler bookings, here are the top airlines favored for flights from Boston to San Diego, particularly for non-stop and one-stop options. Popular layover spots include Denver International Airport (DEN), with an approximate 1 hour and 30-minute layover, O'Hare International Airport (ORD) at about 1 hour and 15 minutes, and Sky Harbor International Airport (PHX), also around 1 hour and 30 minutes. These choices allow you to balance price, total travel time, and cabin class while crafting the perfect itinerary.

  • JetBlue Airways: This budget-friendly airline provides both non-stop and one-stop options, with one-way ticket prices generally falling between $110 and $440. JetBlue represents about 32% of departures on this route, typically completing non-stop flights in around 6 hours and 30 minutes.
  • American Airlines: As a full-service airline, American Airlines offers non-stop and one-stop flights, with one-way fares that usually range from $110 to $515. This carrier operates roughly 17% of departures along this route, with an average one-stop journey taking about 7 hours and 30 minutes in the air and around 8 hours and 45 minutes overall.
  • Delta: Another full-service option, Delta provides non-stop and one-stop services with one-way fares typically between $110 and $490. Delta accounts for approximately 16% of all departures on this route, with non-stop flights averaging 6 hours and 30 minutes in duration.
  • Alaska Airlines: This full-service airline also offers both non-stop and one-stop travel, with one-way fares generally ranging from $110 to $475. Alaska Airlines makes up about 16% of the departures for this route, with a standard non-stop flight time of 6 hours and 30 minutes.
  • Southwest Airlines: A low-cost option, Southwest provides non-stop, one-stop, and multi-stop services, with one-way fares typically priced between $115 and $485. This carrier represents around 7% of departures on this route, with one-stop flights averaging 7 hours and 30 minutes in the air, leading to a total travel time of about 8 hours and 45 minutes.

Travelers flying from Boston to San Diego have the option to enhance their journey with upgraded seating. Delta provides first class and premium economy; JetBlue Airways features business class and premium economy; while Alaska Airlines offers both first class and business class services for a more comfortable experience.

Best time to fly from Boston (BOS) to San Diego (SAN)

The most popular months for travelers flying from Boston to San Diego are February, March, and April, when peak temperatures in San Diego reach up to 60.6°F in April. If you prefer quieter travel, consider July, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 70.5°F. For better deals, May usually offers the lowest average one-way fare around $211. Flight availability peaks in April, with approximately 74 flights per week, making it easier to find convenient departure times. March has the fewest flights, with approximately 43 flights per week.

  • Cheapest time to fly: May usually offers good deals with average one-way fare around $211, roughly 12% cheaper than the yearly average.
  • More budget-friendly months to fly: January, March, and July typically offer average one-way fares of around $220.
  • Most flight options: April has the highest number of flights from Boston to San Diego, with approximately 74 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January57.4°F (14.1°C)Average49$217
February56.8°F (13.8°C)Moderately High52$250
March58.1°F (14.5°C)Moderately High43$219
April60.6°F (15.9°C)Moderately High74$273
May62.6°F (17.0°C)Average49$211
June66.4°F (19.1°C)Average54$233
July70.5°F (21.4°C)Moderately Low49$223
August72.3°F (22.4°C)Average58$229
September72.0°F (22.2°C)Moderately Low51$227
October68.2°F (20.1°C)Average59$243
November62.6°F (17.0°C)Moderately Low51$244
December57.4°F (14.1°C)Average72$310

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative route from Boston (BOS) to San Diego (SAN)

  • Boston to Carlsbad (BOS-CLD): McClellan-Palomar Airport (CLD) lies approximately 28 miles from San Diego International Airport (SAN). One-way economy ticket prices for this route generally vary between $110 and $510, influenced by the time of year and how far in advance you book. Travelers can typically expect a one-stop option, with most layovers occurring at Sky Harbor International Airport (PHX). American Airlines is the leading airline operating this route, and first-class service is also available.

How to find the best prices for flights from Boston (BOS) to San Diego (SAN)

Getting some of the best deals on flights from Boston to San Diego is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually found when booking 2 to 8 weeks in advance, coinciding with when most travelers make their reservations. Afternoon departures between 12 PM and 6 PM tend to be less expensive and are popular among travelers. Additionally, flying on Wednesdays often provides lower prices, although Friday remains the most popular travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find San Diego hotel and flight deals.
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at San Diego International Airport from Logan International Airport

San Diego welcomes travelers from Boston with a range of transport options based on price, convenience, and proximity. Here's how to reach San Diego efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in San Diego, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
  • Car rental: Renting a car from San Diego International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at San Diego International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From San Diego International Airport, the Seaport, a seaport, is conveniently located just 0.1 miles away on foot, while Middletown Station, a metro station, is about 2.3 miles from the airport and typically reached by car. Additionally, B Street Cruise Ship Terminal, a cruise terminal, is approximately 3 miles away by car, providing easy access to various transport options.

Frequently asked questions

How much does a flight from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) cost?
You can find cheap one-way flights from $129 and cheap return flights from $257 Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) with Expedia. One-way flights generally range between $125 and $1190, and roundtrip flights usually range from $321 to $2340. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
January is the cheapest month to fly from Boston to San Diego, with average round-trip fares around $306. This price is about 18% lower than the average fare throughout the year, as demand tends to drop after the holiday season. Other affordable months to consider are February and September.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
3 airlines operate nonstop service from BOS to SAN:

  • JetBlue Airways operates around 22 direct flights from BOS to SAN every week
  • Delta operates around 7 direct flights from BOS to SAN every week
  • Hawaiian Airlines operates around 7 direct flights from BOS to SAN every week

What is the cheapest airline that flies from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
JetBlue Airways is one of the cheapest airlines offering nonstop flights from Boston, MA (BOS) to San Diego, CA (SAN), with round-trip tickets starting from around $258. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
To find a cheap flight from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The best airline to fly with from Boston, MA (BOS) to San Diego, CA (SAN) will differ from traveler to traveler. If you like to fly early, JetBlue Airways offers early morning flights. If price is the most important factor, Southwest Airlines typically offers the lowest fares. Southwest Airlines offers the most daily flights from Boston to San Diego, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
For flights from Boston (BOS) to San Diego (SAN), January and February are the best months to travel. You can expect return flights to be around $306 during these months, which are the cheapest times to fly. This is a great opportunity to escape the winter chill in Boston while enjoying pleasant weather in San Diego.*Prices based on flights available on Expedia in the last year.
How many flights per day from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
On average, there are around 4 nonstop flights per day from Logan Intl. (BOS) to San Diego Intl. (SAN). For more options, look at flights that include layovers.
What is the earliest flight from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The earliest flight from Logan International Airport (BOS) to San Diego International Airport (SAN) typically departs at around 5:00 AM, operated by American Airlines. An early departure like this allows you to make the most of your day in San Diego. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The most popular departure times for flights from Boston (BOS) to San Diego (SAN) are in the early morning, from 6am to 9am. About 31% of passengers prefer this time window. Many major carriers, including American Airlines, United Airlines and JetBlue Airways, offer flights during this window. This timing is favored as it lets you arrive in San Diego with plenty of time to enjoy the day.
How long does it take to fly from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
Direct flights from BOS to SAN usually take about 6 hours 30 minutes, traveling roughly 2,582 miles. If you opt for a connecting flight, expect to add around 2 hours 20 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
Business class seats are offered on the BOS to SAN route with JetBlue Airways and American Airlines.First class cabins are available on:

  • Delta Air Lines
  • United Airlines
  • American Airlines
  • Spirit Airlines

How much is a business class flight from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
A direct, return business class ticket from Boston, MA (BOS) to San Diego, CA (SAN) typically costs between $1,694 - $2,414. A non-stop, one-way business class flight is usually around $736 - $1,188. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) flight with Expedia?
It's easy to earn miles on a Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for San Diego from Logan Intl. (BOS)?
From Logan Intl. (BOS), you can fly into San Diego Intl. (SAN) to reach San Diego. Some flights may connect through major hubs like Midway Intl. (MDW), Baltimore Washington Intl. Thurgood Marshall (BWI), Denver Intl. (DEN) before reaching San Diego. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) at the last minute?
Typically, booking a last minute flight from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) flight and hotel package?
Securing a Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) San Diego Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
If you booked your Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Logan Intl.
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$251
Distance
2581 mi
Average flight time
3 hours 19 mins

Book with confidence

Boston to San Diego Flights

The cheapest times to fly from Boston to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boston to San Diego are during the month of February. You can find some of the cheapest flights from Boston to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boston to San Diego

Sunday is one of the best days to book for cheap flights from Boston to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boston to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boston to San Diego in 2026. You can also book with separate airlines for your outbound and return journeys, from $129 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boston to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boston to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Boston to San Diego Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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