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

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The best prices from Boston to San Diego are usually found in August or May, booked 1 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

How to find the cheapest flight from
Boston (BOS) to San Diego (SAN)

All the information you need to plan the best BOS to SAN flight in 2021: compare Boston to San Diego flight prices with the expected peak season, weather and rainfall in San Diego.
BOS - SAN
Price
$254 - $408
SAN
Temperature
66.2 - 80.6 °F
SAN
Rainfall
0 - 2.8 inches

Popular in

December

High demand for flights, 25% potential price rise

Cheapest in

August

Best time to find cheap flights, 17% potential price drop

Round-trip from

$254

From Boston to San Diego

One-way from

$126

One-way flight from Boston to San Diego

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Boston to San Diego?

It’s generally more expensive to depart on a Monday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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

Find a great deal and save up to 27% by booking at least 17 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Boston to San Diego within the next two weeks, with the cheapest ticket starting at $73.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, July can be a great choice for travel to San Diego. Flights to San Diego from Boston in July are about $80 on average during July, but can be found for as low as $44.

When is the cheapest time to fly from Boston to San Diego (BOS - SAN)?

It’s optimal to fly from Boston to San Diego at noon. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight in the morning.

Cheap flights from Boston to San Diego in May, June 2021

The best prices found for BOS to SAN flights for May, June
20 May - 18 Aug
$237pp
BOS
Boston Logan Intl
Multiple Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
18 May - 20 May
$243pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SAN
San Diego
SAN
San Diego
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
21 May - 17 Aug
$252pp
BOS
Boston Logan Intl
Multiple Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl

Boston to San Diego 2021 flight deals

Cheap flights to San Diego from Boston found for this year
24 Aug - 1 Sep
$157pp
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
24 Aug - 31 Aug
$160pp
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
17 Aug - 25 Aug
$169pp
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl

Non-stop flights to San Diego from Boston

Save time with Boston to San Diego direct flight deals
30 Sep - 3 Oct
$310pp
BOS
Boston Logan Intl
Multiple Airlines
Non-Stop
SAN
San Diego
SAN
San Diego
JetBlue
Non-Stop
BOS
Boston Logan Intl
21 Oct - 23 Oct
$317pp
BOS
Boston Logan Intl
Alaska Airlines
Non-Stop
SAN
San Diego
SAN
San Diego
Alaska Airlines
Non-Stop
BOS
Boston Logan Intl
14 Sep - 19 Sep
$326pp
BOS
Boston Logan Intl
JetBlue
Non-Stop
SAN
San Diego
SAN
San Diego
JetBlue
Non-Stop
BOS
Boston Logan Intl

Last minute flights from Boston to San Diego

Late deals on round-trip flights to San Diego from Boston, departing today and this week
20 May - 18 Aug
$237pp
BOS
Boston Logan Intl
Multiple Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
18 May - 20 May
$243pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
SAN
San Diego
SAN
San Diego
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
21 May - 17 Aug
$252pp
BOS
Boston Logan Intl
Multiple Airlines
 
1 STOP
SAN
San Diego
SAN
San Diego
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl

One-way flights to San Diego from Boston

The cheapest one-way flights from Boston to San Diego
4:19 pm - 9:13 am
Frontier
2 Stops
43h 54m
BOS - SAN
Frontier
$126
Kiwi.com
9:05 am - 6:40 pm
American Airlines
2 Stops
12h 35m
BOS - SAN
American Airlines
4:50 am - 4:00 am
Allegiant Air
2 Stops
26h 10m
BOS - SAN
Allegiant Air
$151
Gotogate

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Boston</span> to <span class="emphasized">San Diego</span> flights.

Flight FAQs

From Boston to San Diego

Are flight prices decreasing from Boston to San Diego due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Boston and San Diego for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Boston Logan Intl to San Diego to control the spread of COVID-19?

Alaska Airlines is one of the many airlines that have implemented additional safety measures to control the spread of COVID-19. New policies for travelers booking flights from Boston Logan Intl to San Diego include masks being provided and required on board, daily cleaning and sanitization, use of HEPA filters, pre-flight testing for antibodies and symptoms, and socially distanced seating (for a limited time). Keep in mind that policies will vary by airline.

Which airlines flying from Boston Logan Intl to San Diego have flexible cancellations due to COVID-19?

Some of our airline partners flying from Boston Logan Intl to San Diego have new flexible policies in place due to COVID-19. JetBlue, American Airlines, and United Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like JetBlue with this kind of flexibility.

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 2 outbound flights from Logan Intl to San Diego offered by 9 different airlines.

Can I find flights from Boston to San Diego for under $200 on Cheapflights?

Yes, there are multiple flights from Boston to San Diego for under $200. The cheapest flight booked recently is on Spirit Airlines for just $157, but on average you can expect to pay $205.

Are there nonstop flights from Boston to San Diego for under $400 on Cheapflights?

Cheapflights has at least 20 direct flights from Boston to San Diego under $400. A good price for a nonstop flight from Boston to San Diego is less than $341.

Are there last-minute flights available from Boston to San Diego for under $300?

There are currently 20+ open flights from Boston to San Diego within the next 7 days for less than $300.

How popular is this flight route?

Within the past month, 406 users have taken a look at flights from Boston Logan Intl to San Diego.

Does it rain more in Boston or San Diego?

Expected rainfall in Boston is less than in San Diego. You can expect this to be the case over the next 16 days.

Is Boston weather warmer or cooler than San Diego?

Temperatures around the 84 °F's can be experienced in July. The weather in San Diego is colder than in Boston. Plan for potential changes in flight availability as peak weather approaches in this location.

How long is the flight from Boston to San Diego?

A quick flight from Boston to San Diego can take about 7h 39m. Spirit Airlines provides one of the quickest options available for as low as $157.

What is the cheapest airline to fly from Boston to San Diego round-trip?

Currently priced at $157, Spirit Airlines will fly you from Boston to San Diego and back. In addition to Spirit Airlines, many other airlines offer competitively priced options for your trip. You may be able to fly from Boston to San Diego for 48% less than the average price by searching for this airline.

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

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $121. American Airlines flights start at $134 while deals on Spirit Airlines start at $141 one-way.

Alternative routes for Boston to San Diego

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for San Diego

Things to know before you go - useful duration and weather info for your trip from Boston to San Diego.
Average temperature for May in San Diego
71.6 °F
Avg rainfall for May in San Diego
0.2 ″

Airports servicing Boston

Airports servicing San Diego

Top 8 airlines flying from Boston to San Diego

The chart below displays the airlines Cheapflights users traveling from Boston to San Diego choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Spirit Airlines
$93 $225 No cancel fee 65%
Frontier
$117 $227 No cancel fee 62%
Sun Country Air
$148 $232 No cancel fee 83%
United Airlines
$127 $273 No cancel fee 69%
Delta
$132 $292 No cancel fee N/A
American Airlines
$130 $297 No cancel fee 71%
Alaska Airlines
$138 $355 No cancel fee 75%
JetBlue
$188 $432 No cancel fee 62%

Hourly flight availability from Boston to San Diego

See what time of day planes typically take off from Boston towards San Diego.
Morning 6 AM to noon 100% of BOS to SAN departures
Early morning Midnight to 6 AM 0% of BOS to SAN departures
Afternoon Noon to 6 PM 0% of BOS to SAN departures
Evening 6 PM to midnight 0% of BOS to SAN departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Boston to San Diego
See how many times per day planes take to the skies headed from Boston to San Diego.
Sunday
4 daily flights
Monday
3 daily flights
Tuesday
1 daily flight
Wednesday
1 daily flight
Thursday
3 daily flights
Friday
5 daily flights
Saturday
1 daily flight
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