Cheap flights from Boston to San Diego from $119

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to San Diego departing on 9/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Boston to San Diego (BOS-SAN)

Cheap round-trip flights

JetBlue Logo
3:45 pm - 6:58 pmBOS-SAN
6h 13mnonstop
JetBlue Logo
8:55 pm - 5:40 amSAN-BOS
5h 45mnonstop
$237JetBlue
Find Deal
Sat, Sep 27 - Wed, Oct 1
 Logo
7:45 am - 10:50 amBOS-SAN
6h 05mnonstop
 Logo
5:57 pm - 10:48 amSAN-BOS
13h 51m2 stops
Wed, Sep 24 - Fri, Oct 31
Spirit Airlines Logo
5:50 am - 7:29 amBOS-SAN
28h 39m3 stops
Spirit Airlines Logo
6:15 am - 10:47 pmSAN-BOS
13h 32m2 stops
$239Spirit Airlines
Find Deal
Fri, Sep 5 - Tue, Sep 9
Alaska Airlines Logo
7:45 am - 10:50 amBOS-SAN
6h 05mnonstop
Alaska Airlines Logo
7:59 pm - 3:00 pmSAN-BOS
16h 01m1 stop
$247Alaska Airlines
Find Deal
Wed, Sep 3 - Sat, Sep 6
Hawaiian Airlines Logo
8:01 am - 11:18 amBOS-SAN
6h 17mnonstop
Hawaiian Airlines Logo
11:37 am - 12:20 amSAN-BOS
9h 43m1 stop
$255Hawaiian Airlines
Find Deal
Tue, Oct 21 - Fri, Oct 31
Alaska Airlines Logo
8:23 pm - 7:41 amBOS-SAN
14h 18m1 stop
Alaska Airlines Logo
7:59 pm - 3:00 pmSAN-BOS
16h 01m1 stop
$256Alaska Airlines
Find Deal
Wed, Sep 3 - Tue, Sep 9
American Airlines Logo
5:24 am - 12:24 pmBOS-SAN
10h 00m1 stop
American Airlines Logo
10:31 pm - 10:56 amSAN-BOS
9h 25m1 stop
$257American Airlines
Find Deal
Wed, Oct 22 - Sat, Nov 1
American Airlines Logo
3:48 pm - 9:43 pmBOS-SAN
8h 55m1 stop
American Airlines Logo
10:45 pm - 12:23 pmSAN-BOS
10h 38m1 stop
$272American Airlines
Find Deal
Wed, Sep 3 - Sun, Sep 7
Hawaiian Airlines Logo
8:01 am - 11:18 amBOS-SAN
6h 17mnonstop
Hawaiian Airlines Logo
9:53 pm - 6:41 amSAN-BOS
5h 48mnonstop
$275Hawaiian Airlines
Find Deal
Wed, Oct 8 - Sun, Oct 12
Southwest Logo
5:50 pm - 10:45 pmBOS-SAN
7h 55m1 stop
Southwest Logo
9:10 pm - 8:10 amSAN-BOS
8h 00m1 stop
$282Southwest
Find Deal
Fri, Sep 26 - Tue, Sep 30

Alaska Airlines flights from Boston to San Diego

Our best Alaska Airlines deals on Boston to San Diego flight tickets
Alaska Airlines
Sep 3
BOS7:45 amBoston Logan Intl
6h 05m
SAN10:50 amSan Diego
Sep 6
SAN7:59 pmSan Diego
16h 01m
1 stop
BOS3:00 pmBoston Logan Intl
Alaska Airlines
Sep 3
BOS8:23 pmBoston Logan Intl
14h 18m
1 stop
SAN7:41 amSan Diego
Sep 9
SAN7:59 pmSan Diego
16h 01m
1 stop
BOS3:00 pmBoston Logan Intl
Alaska Airlines
Sep 3
BOS8:23 pmBoston Logan Intl
14h 18m
1 stop
SAN7:41 amSan Diego
Sep 7
SAN9:35 pmSan Diego
5h 50m
BOS6:25 amBoston Logan Intl

Spirit Airlines flights from Boston to San Diego

Our best Spirit Airlines deals on Boston to San Diego flight tickets
Spirit Airlines
Sep 5
BOS5:50 amBoston Logan Intl
28h 39m
3 stops
SAN7:29 amSan Diego
Sep 9
SAN6:15 amSan Diego
13h 32m
2 stops
BOS10:47 pmBoston Logan Intl
Spirit Airlines
Sep 13
BOS5:50 amBoston Logan Intl
28h 39m
2 stops
SAN7:29 amSan Diego
Sep 20
SAN1:35 pmSan Diego
18h 38m
2 stops
BOS11:13 amBoston Logan Intl
Spirit Airlines
Sep 3
BOS10:34 amBoston Logan Intl
23h 55m
2 stops
SAN7:29 amSan Diego
Sep 6
SAN8:24 amSan Diego
23h 49m
3 stops
BOS11:13 amBoston Logan Intl

momondo 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, momondo users made 832,500 searches. Data last updated August 19, 2025.
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

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 9/27

3:45 pm-6:58 pm

Nonstop6h 13m

San Diego

Wed 10/1

8:55 pm-5:40 am

Nonstop5h 45m

$237

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 9/24

7:45 am-10:50 am

Nonstop6h 05m

San Diego

Fri 10/31

5:57 pm-10:48 am

2 stops13h 51m

$238

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Fri 9/5

5:50 am-7:29 am

3 stops28h 39m

San Diego

Tue 9/9

6:15 am-10:47 pm

2 stops13h 32m

$239

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 9/3

7:45 am-10:50 am

Nonstop6h 05m

San Diego

Sat 9/6

7:59 pm-3:00 pm

1 stop16h 01m

$247

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 10/21

8:01 am-11:18 am

Nonstop6h 17m

San Diego

Fri 10/31

11:37 am-12:20 am

1 stop9h 43m

$255

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 9/3

8:23 pm-7:41 am

1 stop14h 18m

San Diego

Tue 9/9

7:59 pm-3:00 pm

1 stop16h 01m

$256

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 10/22

5:24 am-12:24 pm

1 stop10h 00m

San Diego

Sat 11/1

10:31 pm-10:56 am

1 stop9h 25m

$257

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 9/3

3:48 pm-9:43 pm

1 stop8h 55m

San Diego

Sun 9/7

10:45 pm-12:23 pm

1 stop10h 38m

$272

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 10/8

8:01 am-11:18 am

Nonstop6h 17m

San Diego

Sun 10/12

9:53 pm-6:41 am

Nonstop5h 48m

$275

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Fri 9/26

5:50 pm-10:45 pm

1 stop7h 55m

San Diego

Tue 9/30

9:10 pm-8:10 am

1 stop8h 00m

$282

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Diego from

How to get the cheapest flight ticket from Boston to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of January, then departing from Boston during the month May is also very affordable. Most momondo users find prices during this month for around $349.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Boston to San Diego is on a Tuesday. Travelers who choose to depart for San Diego on a Tuesday will often find tickets for as low as $342. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $424. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the evening when flights can be purchased for as low as $186. Flights in the morning are often more expensive with an average ticket price of $382.

What is the cheapest Boston Logan Intl to San Diego flight route?

Fly from Boston Logan Intl to San Diego for the best Boston Logan Intl - San Diego flight prices

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

You are more likely to see cheaper flights to San Diego from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $375 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Boston for as low as $319 on momondo.

What cabin class options are available on Boston Logan Intl to San Diego flights?

There are 4 cabin classes available to choose from on Boston Logan Intl to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Boston to San Diego flight prices changed over time?

As of August 2025, prices for Boston to San Diego flights are approximately 14% cheaper when compared to flights at the same time last year.

When to book flights from Boston to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to San Diego according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to San Diego (BOS to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to San Diego

Best Price Found

$119

Fastest flight time

6h 03m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from Boston in the past 72 hours is $119. The best round-trip flight deal from Boston to San Diego found on momondo in the last 72 hours is $237.
The fastest flight from Boston to San Diego takes 6h 03m
Direct flights go from Boston to San Diego every day.
There is 1 airport near San Diego: San Diego (SAN)
  • How far is Boston Logan Intl to San Diego by plane?

    A flight from Boston Logan Intl to San Diego will travel around 2576.8 mi. In terms of flight time, this usually takes a little over 6h 05m.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to San Diego Airport?

    Prices for flights from Boston Logan Intl Airport to San Diego Airport are updated daily.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to San Diego Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport to San Diego Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The travel and health documents you'll need for your trip to San Diego Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Diego Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Boston to San Diego?

  • What is the most popular airline from Boston to San Diego?

Best airlines flying from Boston to San Diego

Compare and see reviews for airlines that fly from Boston to San Diego with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $84Free CancellationRating
5.8
3,211 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $87Free CancellationRating
6.3
8,037 reviews
Search Spirit Airlines flights
Hawaiian AirlinesPriceFrom $138Free CancellationRating
7.8
2,665 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $142Free CancellationRating
7.9
7,981 reviews
Search Delta flights
Sun Country AirPriceFrom $142Free CancellationRating
6.9
333 reviews
Search Sun Country Air flights
JetBluePriceFrom $189Free CancellationRating
7.2
2,915 reviews
Search JetBlue flights
Alaska AirlinesPriceFrom $237Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $244Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
8,922 reviews
Search United Airlines flights
SouthwestPriceFrom $291Free CancellationRating
8.0
4,246 reviews
Search Southwest flights
  • Alaska Airlines Flights From Boston to San Diego

    Across 8 Alaska Airlines flights from Boston to San Diego this week, the average price was $424, with the best Alaska Airlines deals starting from $237 round-trip. 10,000 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.

  • Delta Flights From Boston to San Diego

    $142 is the best Delta flight deal from Boston to San Diego found on momondo over the last 72 hours. The average Delta ticket price found was closer to $361, however, with flight time and availability significantly affecting the price. Delta (7.9/10 from 7,981 user reviews) flies into San Diego from Boston 6 times in an average week so prices can vary.

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
Chula Vista
El Cajon
Julian
National City
La Mesa
Imperial Beach
Poway
San Ysidro
Borrego Springs
Alpine
Lemon Grove
Santee

Why use momondo?

Why should I use momondo to find a flight deal from Boston to San Diego?

It is quick and easy to find Boston to San Diego flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Diego that suits you.

Can I find flights from Boston to San Diego with flexible booking policies on momondo?

momondo does allow users to show only those flights to San Diego from Boston which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Boston to San Diego?

momondo provides multiple filters to help you find the best flight to San Diego from Boston. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Boston to San Diego right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Boston to San Diego flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Sun 8/24
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