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Cheap flights from Boston to San Diego from $100

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 5/6. 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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0 bags

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Find the cheapest flights from Boston to San Diego

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Boston to San Diego.
 Logo
10:04 am - 11:56 pmBOS-SAN
16h 52m2 stops
 Logo
10:45 pm - 7:40 amSAN-BOS
5h 55mnonstop
Tue, May 13 - Tue, May 20
 Logo
10:04 am - 11:56 pmBOS-SAN
16h 52m2 stops
 Logo
6:11 pm - 6:10 amSAN-BOS
8h 59m1 stop
Tue, May 13 - Tue, May 20
Delta Logo
5:10 pm - 8:29 pmBOS-SAN
6h 19mnonstop
Delta Logo
9:44 pm - 6:20 amSAN-BOS
5h 36mnonstop
$237Delta
Find Deal
Sat, May 17 - Sat, May 24
Alaska Airlines Logo
8:40 am - 12:01 pmBOS-SAN
6h 21mnonstop
Alaska Airlines Logo
4:00 pm - 6:10 amSAN-BOS
11h 10m1 stop
$241Alaska Airlines
Find Deal
Tue, Jun 3 - Tue, Jun 3
Alaska Airlines Logo
7:30 am - 2:30 pmBOS-SAN
10h 00m1 stop
Alaska Airlines Logo
4:44 pm - 5:40 amSAN-BOS
9h 56m1 stop
$251Alaska Airlines
Find Deal
Tue, Jun 3 - Tue, Jun 3
JetBlue Logo
6:40 am - 9:50 amBOS-SAN
6h 10mnonstop
JetBlue Logo
9:35 pm - 6:19 amSAN-BOS
5h 44mnonstop
$272JetBlue
Find Deal
Tue, Jun 17 - Fri, Jun 27
Delta Logo
5:15 pm - 8:35 pmBOS-SAN
6h 20mnonstop
Delta Logo
9:44 pm - 6:20 amSAN-BOS
5h 36mnonstop
$309Delta
Find Deal
Tue, May 6 - Sat, May 17
JetBlue Logo
3:55 pm - 7:15 pmBOS-SAN
6h 20mnonstop
JetBlue Logo
8:39 pm - 9:14 amSAN-BOS
9h 35m1 stop
$327JetBlue
Find Deal
Fri, May 16 - Sun, May 18
American Airlines Logo
12:33 pm - 6:09 pmBOS-SAN
8h 36m1 stop
American Airlines Logo
10:49 pm - 9:20 amSAN-BOS
7h 31m1 stop
$333American Airlines
Find Deal
Thu, May 8 - Wed, May 14
American Airlines Logo
5:38 pm - 11:59 pmBOS-SAN
9h 21m1 stop
American Airlines Logo
10:45 pm - 10:01 amSAN-BOS
8h 16m1 stop
$369American Airlines
Find Deal
Sun, May 11 - Sun, May 18

JetBlue flights from Boston to San Diego

Our best JetBlue deals on Boston to San Diego flight tickets
JetBlue
Jun 17
BOS6:40 amBoston Logan Intl
6h 10m
SAN9:50 amSan Diego
Jun 27
SAN9:35 pmSan Diego
5h 44m
BOS6:19 amBoston Logan Intl
JetBlue
May 16
BOS3:55 pmBoston Logan Intl
6h 20m
SAN7:15 pmSan Diego
May 18
SAN8:39 pmSan Diego
9h 35m
1 stop
BOS9:14 amBoston Logan Intl
JetBlue
May 6
BOS11:45 amBoston Logan Intl
10h 27m
1 stop
SAN7:12 pmSan Diego
May 13
SAN2:59 pmSan Diego
5h 39m
BOS11:38 pmBoston Logan Intl

Spirit Airlines flights from Boston to San Diego

Our best Spirit Airlines deals on Boston to San Diego flight tickets
Spirit Airlines
May 6
BOS7:00 pmBoston Logan Intl
15h 13m
2 stops
SAN7:13 amSan Diego
May 9
SAN8:48 pmSan Diego
33h 21m
2 stops
BOS9:09 amBoston Logan Intl
Spirit Airlines
May 9
BOS5:42 pmBoston Logan Intl
21h 26m
2 stops
SAN12:08 pmSan Diego
May 10
SAN5:43 pmSan Diego
12h 26m
2 stops
BOS9:09 amBoston Logan Intl
Spirit Airlines
May 13
BOS10:04 amBoston Logan Intl
16h 52m
2 stops
SAN11:56 pmSan Diego
May 19
SAN5:43 pmSan Diego
19h 41m
2 stops
BOS4:24 pmBoston Logan Intl

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 $359.

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 $356. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $467. 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 $416.

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 6 weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $393 when searching 6 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 $341 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 April 2025, prices for Boston to San Diego flights are approximately 15% 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

$100

Fastest flight time

6h 09m

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 $100. The best round-trip flight deal from Boston to San Diego found on momondo in the last 72 hours is $201.
The fastest flight from Boston to San Diego takes 6h 09m
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 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
5.9
3,283 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $112Free CancellationRating
6.3
7,940 reviews
Search Spirit Airlines flights
Hawaiian AirlinesPriceFrom $138Free CancellationRating
7.9
2,393 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $161Free CancellationRating
8.0
7,920 reviews
Search Delta flights
Sun Country AirPriceFrom $166Free CancellationRating
6.9
349 reviews
Search Sun Country Air flights
JetBluePriceFrom $190Free CancellationRating
7.3
2,924 reviews
Search JetBlue flights
Alaska AirlinesPriceFrom $229Free CancellationRating
8.0
9,918 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $245Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $253Free CancellationRating
7.4
8,685 reviews
Search United Airlines flights
SouthwestPriceFrom $316Free CancellationRating
8.0
4,287 reviews
Search Southwest flights
  • Delta Flights From Boston to San Diego

    Across 6 Delta flights from Boston to San Diego this week, the average price was $386, with the best Delta deals starting from $161 round-trip. 7,920 users have rated Delta on momondo, with an average score of 8.0/10.

  • Alaska Airlines Flights From Boston to San Diego

    $229 is the best Alaska Airlines flight deal from Boston to San Diego found on momondo over the last 72 hours. The average Alaska Airlines ticket price found was closer to $437, however, with flight time and availability significantly affecting the price. Alaska Airlines (8.0/10 from 9,911 user reviews) flies into San Diego from Boston 2 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
Chula Vista
Coronado
El Cajon
Julian
La Mesa
National City
Imperial Beach
San Ysidro
Lemon Grove
Borrego Springs
Poway
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.


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Mon 4/28
Mon 5/5

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