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

View AU$168 flight on Sat, 19 Sept 2026Opens in a new window

Flight 1

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

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, 4 Dec - Tue, 8 Dec
BOS
Boston
SAN
San Diego
AU$365 Return, found 5 days ago
AU$365
Return
found 5 days ago
Select Delta flight, departing Fri, 4 Dec from Boston to San Diego, returning Tue, 8 Dec, priced at AU$365 found 5 days ago
Alaska Airlines
Fri, 4 Dec - Tue, 8 Dec
BOS
Boston
SAN
San Diego
AU$380 Return, found 5 days ago
AU$380
Return
found 5 days ago
Select Alaska Airlines flight, departing Fri, 4 Dec from Boston to San Diego, returning Tue, 8 Dec, priced at AU$380 found 5 days ago
Delta
Fri, 4 Dec - Tue, 8 Dec
BOS
Boston
SAN
San Diego
AU$388 Return, found 5 days ago
AU$388
Return
found 5 days ago
Select Delta flight, departing Fri, 4 Dec from Boston to San Diego, returning Tue, 8 Dec, priced at AU$388 found 5 days ago
Delta
Fri, 4 Dec - Tue, 8 Dec
BOS
Boston
SAN
San Diego
AU$389 Return, found 5 days ago
AU$389
Return
found 5 days ago
Select Delta flight, departing Fri, 4 Dec from Boston to San Diego, returning Tue, 8 Dec, priced at AU$389 found 5 days ago
Delta
Fri, 4 Dec - Tue, 8 Dec
BOS
Boston
SAN
San Diego
AU$393 Return, found 5 days ago
AU$393
Return
found 5 days ago
Select Delta flight, departing Fri, 4 Dec from Boston to San Diego, returning Tue, 8 Dec, priced at AU$393 found 5 days ago
Delta
Fri, 4 Dec - Tue, 8 Dec
BOS
Boston
SAN
San Diego
AU$394 Return, found 5 days ago
AU$394
Return
found 5 days ago
Select Delta flight, departing Fri, 4 Dec from Boston to San Diego, returning Tue, 8 Dec, priced at AU$394 found 5 days ago
Alaska Airlines
Fri, 4 Dec - Tue, 8 Dec
BOS
Boston
SAN
San Diego
AU$408 Return, found 5 days ago
AU$408
Return
found 5 days ago
Select Alaska Airlines flight, departing Fri, 4 Dec from Boston to San Diego, returning Tue, 8 Dec, priced at AU$408 found 5 days ago
Delta
Fri, 4 Dec - Tue, 8 Dec
BOS
Boston
SAN
San Diego
AU$409 Return, found 5 days ago
AU$409
Return
found 5 days ago
Select Delta flight, departing Fri, 4 Dec from Boston to San Diego, returning Tue, 8 Dec, priced at AU$409 found 5 days ago
American Airlines
Fri, 4 Dec - Tue, 8 Dec
BOS
Boston
SAN
San Diego
AU$414 Return, found 5 days ago
AU$414
Return
found 5 days ago
Select American Airlines flight, departing Fri, 4 Dec from Boston to San Diego, returning Tue, 8 Dec, priced at AU$414 found 5 days ago
United
Mon, 28 Sept - Mon, 5 Oct
BOS
Boston
SAN
San Diego
AU$620 Return, found 4 days ago
AU$620
Return
found 4 days ago
Select United flight, departing Mon, 28 Sept from Boston to San Diego, returning Mon, 5 Oct, priced at AU$620 found 4 days ago

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

September is typically the cheapest month to fly

From AU$280 - AU$373 per traveller.

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 AU$168 and cheap return flights from AU$365 BOS to SAN with Expedia. One-way flights typically cost between AU$293 and AU$1,218 and return flights often range between AU$445 and AU$1,796. 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 BOS to SAN ticket fares go up or down.
What is the cheapest month to fly from Boston, MA (BOS) to San Diego, CA (SAN)?
The cheapest months to fly from Boston, MA (BOS) to San Diego, CA (SAN) are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
There are 3 airlines offering direct flights from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.). Here are the top carriers:
  • JetBlue Airways operates 19 direct flights from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) every week.
  • Delta operates 7 direct flights from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) every week.
  • Southwest Airlines operates 7 direct flights from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) 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 return flights from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.), with tickets starting from around AU$361 for flights that can be booked for departure within the next year. JetBlue Airways also offers one of the cheapest connecting return flights on this route, with tickets starting from around AU$377. 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.
How do I find cheap flights from Boston, MA (BOS) to San Diego, CA (SAN)?
To find a cheap flight from Boston, MA (BOS) to San Diego, CA (SAN), 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-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) 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, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.), 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) to San Diego, CA (SAN)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
You'll find around 5 nonstop flights per day from Boston Logan International (BOS) to San Diego International (SAN). For even more choices, look at flights that include layovers, as there are approximately 204 connecting flights per day. Some common connection points include O'Hare International (ORD), Baltimore Washington International Thurgood Marshall (BWI), and Midway International (MDW).
What is the earliest flight from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
The earliest flight from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) typically departs around 5:00 AM. This flight is operated by American Airlines. This is a seasonal service active in April. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
You'll typically find the most flights from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) on a Sunday, with around 105 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, United, and Delta. Sundays offer notably more flight options compared to other days of the week, making it a good day to consider if you're looking for flexibility.
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, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.) are in the morning, from 6am to 9am. Many major carriers, including American Airlines, Alaska Airlines and JetBlue Airways, offer flights during this window. Many travellers prefer these early morning flights as they allow you to arrive in San Diego with plenty of time to start your day.
How long does it take to fly from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
When flying from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.), you'll find that nonstop flights typically take around 6 hours 18 minutes. This route covers a distance of approximately 4155 kilometres. If you opt for a flight with one stop, your travel time will generally be longer, averaging about 8 hours 30 minutes. Flights with two or more stops usually take even longer, around 11 hours 30 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to allow for some flexibility in your travel plans.
Can you fly business or first class from Boston, MA (BOS-Logan Intl.) to San Diego, CA (SAN-San Diego Intl.)?
Yes, you can fly business class or first class between BOS and SAN. Airlines that offer business class service on this route include:
  • JetBlue Airways
  • Delta
First class cabins are available on:
  • Alaska Airlines
  • United
  • Delta
  • American Airlines
How do I earn miles on a Boston, MA (BOS) to San Diego, CA (SAN) flight with Expedia?
It's easy to earn miles on a Boston, MA (BOS) to San Diego, CA (SAN) 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, CA (SAN) from Boston, MA (BOS)?
If you're planning to travel to San Diego from Logan International Airport (BOS), you can fly directly into San Diego International Airport (SAN). Some flights may connect through major hubs like Midway International Airport (MDW), Baltimore Washington International Thurgood Marshall Airport (BWI), or Denver International Airport (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) to San Diego, CA (SAN) at the last minute?
Typically, booking a last minute flight from Boston, MA (BOS) to San Diego, CA (SAN) 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) to San Diego, CA (SAN) flight and hotel package?
Securing a Boston, MA (BOS) to San Diego, CA (SAN) flight and hotel package 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) to San Diego, CA (SAN)?
If you booked your Boston, MA (BOS) to San Diego, CA (SAN) 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, United
Roundtrip price
AU$364
Distance
4131 km
Average flight time
3 hours 6 mins

Book with confidence

Your quick guide to flights from Boston to San Diego

Pick up great flights from Boston to San Diego

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Boston to San Diego. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Boston to San Diego that take around hours.

Find cheap flights from Boston to San Diego

From the great flight deals with prices currently ranging from AU$365 to AU$620, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Boston to San Diego around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to San Diego is normally in December.

Reasons to book your flight from Boston to San Diego with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Boston to San Diego across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to San Diego right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Boston to San Diego

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*Available to Expedia members.