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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 12/11. 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

Cheap round-trip flights

Southwest Logo
6:00 pm - 11:25 pmBOS-SAN
8h 25m1 stop
Southwest Logo
6:50 am - 7:10 pmSAN-BOS
9h 20m1 stop
$200Southwest
Find Deal
Fri, Dec 5 - Wed, Dec 10
Southwest Logo
2:10 pm - 9:35 pmBOS-SAN
10h 25m1 stop
Southwest Logo
10:30 am - 10:45 pmSAN-BOS
9h 15m2 stops
$218Southwest
Find Deal
Thu, Dec 11 - Mon, Dec 15
Alaska Airlines Logo
4:24 pm - 8:10 pmBOS-SAN
6h 46mnonstop
Alaska Airlines Logo
9:15 am - 5:52 pmSAN-BOS
5h 37mnonstop
$221Alaska Airlines
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Thu, Dec 11 - Mon, Dec 15
JetBlue Logo
7:45 am - 11:23 amBOS-SAN
6h 38mnonstop
JetBlue Logo
8:31 pm - 5:02 amSAN-BOS
5h 31mnonstop
$227JetBlue
Find Deal
Sat, Dec 6 - Tue, Dec 9
Delta Logo
5:25 pm - 8:58 pmBOS-SAN
6h 33mnonstop
Delta Logo
10:26 pm - 6:55 amSAN-BOS
5h 29mnonstop
$232Delta
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Wed, Nov 19 - Tue, Dec 2
JetBlue Logo
3:45 pm - 7:16 pmBOS-SAN
6h 31mnonstop
JetBlue Logo
2:52 pm - 11:16 pmSAN-BOS
5h 24mnonstop
$233JetBlue
Find Deal
Mon, Nov 3 - Wed, Nov 12
Alaska Airlines Logo
7:00 am - 4:57 pmBOS-SAN
12h 57m1 stop
Alaska Airlines Logo
9:59 pm - 3:37 pmSAN-BOS
14h 38m1 stop
$246Alaska Airlines
Find Deal
Fri, Dec 5 - Wed, Dec 10
American Airlines Logo
6:00 am - 11:49 amBOS-SAN
8h 49m1 stop
American Airlines Logo
6:19 am - 8:30 pmSAN-BOS
11h 11m1 stop
$263American Airlines
Find Deal
Thu, Oct 30 - Sat, Nov 8
Delta Logo
5:35 pm - 8:44 pmBOS-SAN
6h 09mnonstop
Delta Logo
10:15 pm - 6:53 amSAN-BOS
5h 38mnonstop
$267Delta
Find Deal
Fri, Oct 3 - Tue, Oct 7
American Airlines Logo
3:35 pm - 9:44 pmBOS-SAN
9h 09m1 stop
American Airlines Logo
12:40 pm - 12:16 amSAN-BOS
8h 36m1 stop
$268American Airlines
Find Deal
Mon, Nov 3 - Wed, Nov 12

Southwest flights from Boston to San Diego

Our best Southwest deals on Boston to San Diego flight tickets
Southwest
Dec 5
BOS6:00 pmBoston Logan Intl
8h 25m
1 stop
SAN11:25 pmSan Diego
Dec 10
SAN6:50 amSan Diego
9h 20m
1 stop
BOS7:10 pmBoston Logan Intl
$200
Find similar
Southwest
Dec 11
BOS2:10 pmBoston Logan Intl
10h 25m
1 stop
SAN9:35 pmSan Diego
Dec 15
SAN10:30 amSan Diego
9h 15m
2 stops
BOS10:45 pmBoston Logan Intl
$218
Find similar
Southwest
Dec 11
BOS2:10 pmBoston Logan Intl
10h 25m
1 stop
SAN9:35 pmSan Diego
Dec 15
SAN9:45 pmSan Diego
8h 55m
1 stop
BOS9:40 amBoston Logan Intl
$230
Find similar

Alaska Airlines flights from Boston to San Diego

Our best Alaska Airlines deals on Boston to San Diego flight tickets
Alaska Airlines
Dec 11
BOS4:24 pmBoston Logan Intl
6h 46m
SAN8:10 pmSan Diego
Dec 15
SAN9:15 amSan Diego
5h 37m
BOS5:52 pmBoston Logan Intl
$221
Find similar
Alaska Airlines
Dec 5
BOS7:00 amBoston Logan Intl
12h 57m
1 stop
SAN4:57 pmSan Diego
Dec 10
SAN9:59 pmSan Diego
14h 38m
1 stop
BOS3:37 pmBoston Logan Intl
$246
Find similar
Alaska Airlines
Dec 5
BOS7:00 amBoston Logan Intl
12h 57m
1 stop
SAN4:57 pmSan Diego
Dec 16
SAN9:34 amSan Diego
11h 25m
1 stop
BOS11:59 pmBoston Logan Intl
$256
Find similar

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 September 15, 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

Fri 12/5

6:00 pm-11:25 pm

1 stop8h 25m

San Diego

Wed 12/10

6:50 am-7:10 pm

1 stop9h 20m

$200

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 12/11

2:10 pm-9:35 pm

1 stop10h 25m

San Diego

Mon 12/15

10:30 am-10:45 pm

2 stops9h 15m

$218

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 12/11

4:24 pm-8:10 pm

Nonstop6h 46m

San Diego

Mon 12/15

9:15 am-5:52 pm

Nonstop5h 37m

$221

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 12/6

7:45 am-11:23 am

Nonstop6h 38m

San Diego

Tue 12/9

8:31 pm-5:02 am

Nonstop5h 31m

$227

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 11/19

5:25 pm-8:58 pm

Nonstop6h 33m

San Diego

Tue 12/2

10:26 pm-6:55 am

Nonstop5h 29m

$232

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Mon 11/3

3:45 pm-7:16 pm

Nonstop6h 31m

San Diego

Wed 11/12

2:52 pm-11:16 pm

Nonstop5h 24m

$233

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Fri 12/5

7:00 am-4:57 pm

1 stop12h 57m

San Diego

Wed 12/10

9:59 pm-3:37 pm

1 stop14h 38m

$246

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 10/30

6:00 am-11:49 am

1 stop8h 49m

San Diego

Sat 11/8

6:19 am-8:30 pm

1 stop11h 11m

$263

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Fri 10/3

5:35 pm-8:44 pm

Nonstop6h 09m

San Diego

Tue 10/7

10:15 pm-6:53 am

Nonstop5h 38m

$267

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Mon 11/3

3:35 pm-9:44 pm

1 stop9h 09m

San Diego

Wed 11/12

12:40 pm-12:16 am

1 stop8h 36m

$268

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 October is also very affordable. Most momondo users find prices during this month for around $347.

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 $337. 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 $379.

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 $370 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 $315 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 September 2025, prices for Boston to San Diego flights are approximately 2% 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

$144

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 $144. The best round-trip flight deal from Boston to San Diego found on momondo in the last 72 hours is $253.
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)
Search flight deals

  • 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 09m.

  • 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
3,172 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $87Free CancellationRating
6.3
8,015 reviews
Search Spirit Airlines flights
Hawaiian AirlinesPriceFrom $138Free CancellationRating
7.8
2,723 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $141Free CancellationRating
7.9
7,954 reviews
Search Delta flights
Sun Country AirPriceFrom $142Free CancellationRating
6.9
330 reviews
Search Sun Country Air flights
JetBluePriceFrom $191Free CancellationRating
7.2
2,912 reviews
Search JetBlue flights
Alaska AirlinesPriceFrom $237Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $247Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
American AirlinesPriceFrom $248Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $291Free CancellationRating
8.0
4,242 reviews
Search Southwest flights

  • Alaska Airlines Flights From Boston to San Diego

    Across 11 Alaska Airlines flights from Boston to San Diego this week, the average price was $417, 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

    $141 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 $358, however, with flight time and availability significantly affecting the price. Delta (7.9/10 from 7,954 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
La Mesa
National City
Poway
Imperial Beach
San Ysidro
Borrego Springs
Lemon Grove
Alpine
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.

An easier way to manage your San Diego trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
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