BOS - SAN

$139 Find Cheap Flights from Boston to San Diego - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to San Diego departing on 1/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$248
Typical prices: $290-$469
JetBlue
Tue 8/18Tue 8/25
BOS - SAN • Non-stop
Cheapest one-way
$139
Typical prices: $145-$363
United Airlines
Tue 1/12
BOS - SAN • 1 stop
Advice from real travelers
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
JetBlue adds free Wi-Fi and live TV; Delta offers free Wi-Fi for SkyMiles members.
For more comfort, JetBlue Even More Space beats Delta Comfort Plus on extra legroom.
Expert advice
Expert advice
+1
+1
Expert advice
Expert advice
+1
Nonstop flights
You can fly direct with Alaska Airlines, Delta and others. Average duration is 6h 06m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 88% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 46% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 13% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Diego!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to San Diego that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to San Diego

Tue, Aug 18 - Tue, Aug 25
JetBlue Logo
6:05 am - 9:10 am
BOS
-
SAN
6h 05mnonstop
JetBlue Logo
8:40 pm - 5:19 am
SAN
-
BOS
5h 39mnonstop
$248JetBlue
Wed, Aug 19 - Tue, Aug 25
JetBlue Logo
4:20 pm - 7:29 pm
BOS
-
SAN
6h 09mnonstop
JetBlue Logo
8:40 pm - 5:19 am
SAN
-
BOS
5h 39mnonstop
$249JetBlue
Mon, Aug 24 - Mon, Aug 31
Alaska Airlines Logo
8:00 am - 11:12 am
BOS
-
SAN
6h 12mnonstop
Alaska Airlines Logo
8:59 pm - 5:49 am
SAN
-
BOS
5h 50mnonstop
$250Alaska Airlines
Tue, Aug 25 - Mon, Aug 31
Alaska Airlines Logo
8:00 am - 11:12 am
BOS
-
SAN
6h 12mnonstop
Alaska Airlines Logo
8:59 pm - 5:49 am
SAN
-
BOS
5h 50mnonstop
$250Alaska Airlines
Tue, Aug 25 - Sat, Aug 29
Southwest Logo
3:20 pm - 10:35 pm
BOS
-
SAN
10h 15m
1 stop
Southwest Logo
3:55 pm - 12:25 am
SAN
-
BOS
5h 30mnonstop
$250Southwest
Tue, Sep 8 - Mon, Sep 14
Multiple Airlines Logo
6:00 am - 9:05 am
BOS
-
SAN
6h 05mnonstop
Multiple Airlines Logo
8:59 pm - 5:47 am
SAN
-
BOS
5h 48mnonstop
$250Multiple Airlines
Thu, Oct 15 - Mon, Oct 19
Multiple Airlines Logo
6:35 am - 9:52 am
BOS
-
SAN
6h 17mnonstop
Multiple Airlines Logo
8:34 pm - 5:21 am
SAN
-
BOS
5h 47mnonstop
$250Multiple Airlines
Wed, Sep 9 - Sat, Sep 12
Southwest Logo
10:05 am - 6:20 pm
BOS
-
SAN
11h 15m
2 stops
Southwest Logo
10:40 pm - 9:15 am
SAN
-
BOS
7h 35m
1 stop
$252Southwest
Mon, Aug 24 - Fri, Aug 28
United Airlines Logo
5:01 pm - 10:10 pm
BOS
-
SAN
8h 09m
1 stop
United Airlines Logo
2:15 pm - 1:11 am
SAN
-
BOS
7h 56m
1 stop
$252United Airlines
Tue, Aug 25 - Sat, Aug 29
United Airlines Logo
9:30 am - 2:57 pm
BOS
-
SAN
8h 27m
1 stop
United Airlines Logo
2:15 pm - 1:11 am
SAN
-
BOS
7h 56m
1 stop
$255United Airlines
Booking Insights

KAYAK's insights & trends for Boston to San Diego flights

Get data-powered insights and trends into flights from Boston to San Diego to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Boston to San Diego?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boston to San Diego departing in August.

Flight prices are below average for this route right now.

Flights to San Diego from Boston usually cost between $290 and $469 in August.
The lowest price found in the past 5 days was $248 on JetBlue (Aug 18-Aug 25).

What’s the cheapest day of the week to fly from Boston to San Diego?

The average price of all round-trip flights from Boston to San Diego clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Boston to San Diego, look for departures on Wednesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from San Diego, Saturday is the cheapest day to fly and Sunday is the most expensive.

What is the cheapest month to fly from Boston to San Diego?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to San Diego, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to San Diego is January, where tickets cost $326 (return) on average. On the other hand, the most expensive months are December and April, where the average cost of round-trip tickets is $470 and $410 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to San Diego, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to San Diego, you should book around 3 weeks before departure, which saves you about 46% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Expert advice

Expert advice for your flight from Boston to San Diego

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on JetBlue and Alaska Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Stefanie Waldek

Stefanie Waldek

Expert on Delta

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Brandon Schultz

Brandon Schultz

Expert on SAN

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Blane Bachelor

Blane Bachelor

Expert on BOS

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.

Good to know

Low season

January

Cheapest flight

$139
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 25% increase in price.
Flight from Boston to San Diego

When to book flights from Boston to San Diego

Are your dates flexible? Find out the best times to travel from Boston to San Diego based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from Boston to San Diego: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Boston to San Diego 
CarolFlew with Alaska Airlines
BOS
-
SAN
Jul 2024
Bring your own entertainment (book, puzzles, devices). T mobile offers free internet with Alaska!
Verified travelerFlew with Alaska Airlines
BOS
-
SAN
Mar 2024
Be prepared to wait in long line for shuttle to car rental complex.

FAQs for booking flights from Boston to San Diego

  • What is the quickest way to get from San Diego International Airport to downtown San Diego?

    Rather than renting a car or waiting for taxis, you can take the train into the city from the airport. The fastest way to get from San Diego International Airport is by taking the Amtrak Intercity train to downtown San Diego. You will need to take the Metropolitan Transit System Route 992 to Santa Fe Depot train station downtown.

  • Are there nearby hotels at San Diego International Airport?

    There is a good choice of hotels nearby when you land at San Diego International Airport. The nearest hotel is the Holiday Inn Express San Diego Airport-Old Town, which offers a free airport shuttle for guests. Alternatively, you can check into the Sheraton San Diego Hotel & Marina, which is only half a mile away from the airport.

  • Can I fly from Boston to San Diego non-stop?

    Yes, there are two airlines that offer direct, non-stop flights from Boston to San Diego. The airlines offering these flights, which take less than seven hours, are Alaska Airlines and JetBlue Airways. Delta and American Airlines’ flights to San Diego tend to have layovers at Dallas-Fort Worth Airport.

  • Which airlines have a hub at San Diego International Airport?

    San Diego International Airport is not a hub for any airline but is a focus city for both Alaska Airlines and Southwest Airlines. The services you can expect from Alaska Airlines include complimentary snacks and beverages, as well as free movies and TV shows. On Southwest Airlines you will have free in-flight, non-alcoholic beverages as well as complimentary pretzels and Nabisco snacks.

  • Can I leave my car at Boston Logan International Airport till I return?

    You can leave your car at BOS till you return from your trip since this airport’s Central Parking Garage offers short-term and long-term parking spots. This garage is accessible to all of the airport’s terminals via pedestrian bridges on Level 4. Since its limited spots are often in demand, it’s advisable to reserve your space as early as possible.

  • Where can I breastfeed my baby before and after my flight from Boston to San Diego?

    BOS and SAN feature nursing rooms where mothers can nurse their children and pump milk. At BOS, nursing rooms are on the Landside and Airside of Terminal A and close to Gate B7, while Mamava suites are near Gate B18, Gate C8, and Gates E1 and E9. At SAN, there are lactation rooms on the second level of Terminal 1 West Rotunda, the ground level of Terminal 1 East Rotunda, and near Gate 34 in Terminal 2.

  • Where can I get emergency assistance at San Diego International Airport?

    If you need transportation assistance, emergency housing, or have general airport queries, visit Traveler’s Aid, a non-profit organization that assists stranded passengers at various USA airports. At SAN, it has counters in the Baggage Claims of Terminals 1 and 2.

  • Where can I pray before/after my flight from Boston to San Diego?

    In case you’d like a quiet place to pray before embarking on your flight, you can do so at BOS’ Our Lady of the Airways Chapel, an interfaith chapel on the Arrivals Level of Terminal C. After landing, you can pray at the airport’s Meditation room, on the Airside of Terminal 2.

  • Which airlines offering flights from Boston to San Diego are eco-friendly?

    Alaska, Jet Blue, and Delta Air Lines are ranked as the leading eco-friendly airlines in the USA. This being the case, if you’d like to travel with an airline committed to safeguarding the environment, consider traveling with these airlines.

  • Where can I rejuvenate before exiting San Diego International Airport?

    To rejuvenate, visit SAN’s Be Relax Spa near Gates 26 and 36 in Terminal 2. This spa offers elite massages and spa treatments. Here, you can count on getting value for your money, given that it boasts experienced staff.

  • What is the cheapest flight from Boston to San Diego?

    In the last 5 days, the lowest price for a flight from Boston to San Diego was $139 for a one-way ticket and $248 for a round-trip.

  • Do I need a passport to fly between Boston and San Diego?

    No, a passport isn't needed to fly from Boston to San Diego. However, local authorities might ask for an official ID.

  • Which airlines offer Wi-Fi service onboard planes from Boston to San Diego?

    JetBlue, Alaska Airlines, Delta, Hawaiian Airlines, and American Airlines offer inflight Wi-Fi service on the Boston to San Diego flight route.

  • Which aircraft models fly most regularly from Boston to San Diego?

    The Airbus A318/A319/A320/A321 is the aircraft model that flies most regularly on the Boston to San Diego flight route.

  • Which airline alliances offer flights from Boston to San Diego?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Boston and San Diego, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Boston to San Diego?

    There are nonstop flights from Boston to San Diego on a daily basis.

  • Which is the best airline for flights from Boston to San Diego, Southwest or Alaska Airlines?

    The two airlines most popular with KAYAK users for flights from Boston to San Diego are Southwest and Alaska Airlines. With an average price for the route of $394 and an overall rating of 8.0, Southwest is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $414 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Boston to San Diego?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to San Diego.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to San Diego?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to San Diego?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Diego with an airline and back to Boston with another airline. Booking your flights between Boston and SAN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to San Diego?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Diego from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Boston to San Diego

  • Looking for a cheap flight? 25% of our users found flights on this route for $197 or less one-way and $296 or less round-trip.
  • Looking to relax before your flight from Boston to San Diego? There are several airline lounges at Boston Logan Airport, open to all classes of passenger. Delta Sky Club has two locations in Terminal A or there is the American Airlines Admirals Club located in Terminal B. Alternatively, you can check into the Be Relax spa in Terminal C.
  • If you need to entertain the children on your flight to San Diego, you will find three play areas located around Boston Logan Airport. Offering a safe place for your children to play, Kidport is equipped with climbing structures, a kid-sized replica of Boston Logan’s control tower, plus lots more. You will find one at Terminals A, B, and C.
  • If you are bringing your service animal or pet on your flight from Boston to San Diego, before you fly you will find pet relief areas outside every terminal, on the Arrivals level of Boston Logan Airport. You will also find a pet relief area at Terminal E, post-security. Once you land at San Diego International Airport, you will find seven pet relief areas, both indoor and outdoor.
  • If you or someone you are traveling with has a disability, there are plenty of services and amenities at Boston Logan Airport to make their visit comfortable. In addition to accessible restrooms in each terminal, there are elevators and ramps to make accessing terminals, garages, and curbs easier.
  • Where are the best places to eat at Boston Logan Airport? Terminal B at Boston Logan Airport has the best selection of restaurants, mainly pre-security. From Villa Pizza and WPizza by Wolfgang Puck to three Dunkin‘ Donuts outlets and two Legal Seafoods restaurants, you will have many dining options. If you are craving some local cuisine, head to Dine Boston to experience delicious seasonal ingredients from guest chefs at Terminal E.
  • Boston Logan International Airport (BOS) is Greater Boston’s and New England’s primary airport. Located 3 miles from Boston’s downtown, this air transit hub serves as a hub for Delta and Cape Air and a focus city for JetBlue. San Diego International Airport (SAN) is the primary airport for the Greater San Diego Area. It’s located three miles northwest of downtown San Diego.
  • If you want to travel to BOS via public transit, you can take the MBTA Blue Line to the Airport Station. At this station, you’ll transfer to a Massport Shuttle bus which will drop you at your terminal. Alternatively, you can take the MBTA Red Line or Commuter Rail to South Station. At this station, you’ll transfer to a Route SL1 Silver Line bus which will transport you to your terminal.
  • At SAN, you can rent a car quite easily, given that this airport features an off-site Consolidated Rental Car Center. The facility is accessible by free shuttles that connects it to the airport. It houses locations for multiple car rental agencies, including Enterprise, Avis, Dollar, Firefly, Fox, Hertz, Ace, and Zipcar.

Prefer to fly direct from Boston to San Diego?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Boston Logan Intl to San Diego.
Find which airlines fly direct from Boston Logan Intl Airport to San Diego Airport, which days they fly and book direct flights.

Direct departures

Boston Logan Intl to San Diego

Monday

Alaska Airlines,Delta,JetBlue, +1 more

Alaska Airlines,Delta, +2 more

Tuesday

Alaska Airlines,Delta,JetBlue, +1 more

Alaska Airlines,Delta, +2 more

Wednesday

Alaska Airlines,Delta,JetBlue, +1 more

Alaska Airlines,Delta, +2 more

Thursday

Alaska Airlines,Delta,JetBlue, +1 more

Alaska Airlines,Delta, +2 more

Friday

Alaska Airlines,Delta,JetBlue, +1 more

Alaska Airlines,Delta, +2 more

Saturday

Alaska Airlines,Delta,JetBlue, +1 more

Alaska Airlines,Delta, +2 more

Sunday

Alaska Airlines,Delta,JetBlue, +1 more

Alaska Airlines,Delta, +2 more

See more direct flights

Direct returns

San Diego to Boston Logan Intl

Monday

Alaska Airlines,Delta,JetBlue, +1 more

Alaska Airlines,Delta, +2 more

Tuesday

Alaska Airlines,Delta,JetBlue, +1 more

Alaska Airlines,Delta, +2 more

Wednesday

Alaska Airlines,Delta,JetBlue, +1 more

Alaska Airlines,Delta, +2 more

Thursday

Alaska Airlines,Delta,JetBlue, +1 more

Alaska Airlines,Delta, +2 more

Friday

Alaska Airlines,Delta,JetBlue, +1 more

Alaska Airlines,Delta, +2 more

Saturday

Alaska Airlines,Delta,JetBlue, +1 more

Alaska Airlines,Delta, +2 more

Sunday

Alaska Airlines,Delta,JetBlue, +1 more

Alaska Airlines,Delta, +2 more

See more direct flights

Everything you need to know for your flight from Boston to San Diego

Other airlines flying from Boston to San Diego

Flights from the other most popular airlines that fly from Boston to San Diego according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.