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Cheap flights from Boston to San Diego from £92

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAN
27 Mar — 3 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boston to San Diego

Enter your travel dates to find the best prices.

Cheapest flights from Boston to San Diego
Explore the most affordable flight options available from Boston to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 25 February 2026.

Tue 31/317:30
BOS
-
SAN
Nonstop6h 37m
Delta
Wed 8/422:03
SAN
-
BOS
Nonstop5h 22m
Delta
Deal found 24/2£163
Wed 8/416:54
BOS
-
SAN
1 stop9h 05m
Delta
Wed 29/406:25
SAN
-
BOS
1 stop7h 39m
Delta
Deal found 24/2£165
Wed 8/405:30
BOS
-
SAN
1 stop8h 14m
Delta
Sat 11/422:03
SAN
-
BOS
Nonstop5h 22m
Delta
Deal found 23/2£167
Sat 25/417:44
BOS
-
SAN
Nonstop6h 29m
Delta
Sat 2/521:59
SAN
-
BOS
Nonstop5h 31m
Delta
Deal found 24/2£168
Tue 31/317:30
BOS
-
SAN
Nonstop6h 37m
Delta
Tue 7/421:55
SAN
-
BOS
1 stop9h 09m
Delta
Deal found 24/2£170
Wed 8/405:50
BOS
-
SAN
1 stop10h 47m
Delta
Thu 30/422:10
SAN
-
BOS
1 stop8h 01m
Delta
Deal found 24/2£174
Wed 25/315:50
BOS
-
SAN
Nonstop6h 29m
JetBlue
Tue 31/320:25
SAN
-
BOS
Nonstop5h 35m
JetBlue
Deal found 23/2£176
Tue 7/417:30
BOS
-
SAN
Nonstop6h 37m
Delta
Tue 14/421:59
SAN
-
BOS
Nonstop5h 31m
Delta
Deal found 24/2£178
Wed 1/417:30
BOS
-
SAN
Nonstop6h 37m
Delta
Tue 7/422:03
SAN
-
BOS
Nonstop5h 22m
Delta
Deal found 23/2£179
Tue 28/417:44
BOS
-
SAN
Nonstop6h 29m
Delta
Fri 1/521:59
SAN
-
BOS
Nonstop5h 31m
Delta
Deal found 24/2£182
Sat 2/516:50
BOS
-
SAN
1 stop7h 51m
Delta
Sat 9/511:50
SAN
-
BOS
1 stop9h 04m
Delta
Deal found 23/2£183
Mon 16/315:50
BOS
-
SAN
Nonstop6h 29m
JetBlue
Tue 24/320:59
SAN
-
BOS
Nonstop5h 22m
JetBlue
Deal found 23/2£184

Find flight deals from Boston to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 25 February 2026.

Round-trip from

£163

One-way from

£92

Popular in

December

Cheapest in

January

Average price

£294
Delta
  • Delta
  • 31/3-8/4
  • Nonstop
  • 11h 59m total
  • Boston to San Diego
Search Deals
Delta
  • Delta
  • 16/5
  • 1 total stop
  • 8h 48m total
  • Boston to San Diego
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£3 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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, Cheapflights users made 858,174 searches. Data last updated 25 February 2026.
Use the filters below to find and compare flights from Boston to San Diego that are best for you.

Fly from

Boston

Fly to

San Diego

Route

Depart

Return

Price

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 6/5

10:55-18:59

1 stop11h 04m

San Diego

Mon 11/5

22:15-09:06

1 stop7h 51m

£174

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 8/4

14:25-22:25

1 stop11h 00m

San Diego

Wed 29/4

19:35-08:05

2 stops9h 30m

£190

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 9/5

06:00-14:05

2 stops11h 05m

San Diego

Wed 13/5

19:35-08:05

2 stops9h 30m

£229

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 9/4

15:50-19:15

Nonstop6h 25m

San Diego

Thu 16/4

20:30-05:07

Nonstop5h 37m

£239

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 18/6

17:15-20:41

Nonstop6h 26m

San Diego

Tue 23/6

22:00-06:41

Nonstop5h 41m

£247

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 9/4

15:45-23:10

1 stop10h 25m

San Diego

Thu 16/4

12:40-00:50

1 stop9h 10m

£262

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Fri 20/3

06:00-00:11

1 stop21h 11m

San Diego

Wed 25/3

22:03-06:25

Nonstop5h 22m

£263

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 29/7

05:25-14:15

2 stops11h 50m

San Diego

Wed 5/8

22:40-09:50

1 stop8h 10m

£266

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 4/6

14:20-21:00

2 stops9h 40m

San Diego

Thu 11/6

19:35-08:10

2 stops9h 35m

£270

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Mon 17/8

10:30-18:05

2 stops10h 35m

San Diego

Fri 21/8

15:30-08:00

1 stop13h 30m

£270

Flights are sorted by cheapest return flights first.

Deals found on 22/2

Showing 1-10 of 22 results
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Best time to book a flight from Boston to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Boston with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a return flight from Boston to San Diego. Price data was last updated on 20 February 2026.

To ensure you get the cheapest price possible for a flight from Boston to San Diego, you should look to book at least 37 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Boston to San Diego?

Currently, March is the cheapest month in which you can book a flight from Boston to San Diego (average of £87). Flying from Boston to San Diego in July is currently the most expensive (average of £146). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to SAN?

Find hourly flight availability from Boston to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 25 February 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Boston to San Diego as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Boston to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Boston to San Diego flight route?

    Flights from Boston Logan Intl to San Diego have been viewed 1 times in the past calendar month.

  • How long is the flight from Boston to San Diego?

    Departing from Boston to San Diego will take you 6h 25m. The distance between Boston and San Diego is about 2581 mi. This flight may include one or multiple stops.

  • What are the most reliable airlines from Boston to San Diego?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Boston to San Diego on time: TAP AIR PORTUGAL (83%), JetBlue (79%), Etihad Airways (77%).

  • Can I find deals for flights from Boston to San Diego that include hotel bookings?

    Yes. In addition to deals on Boston to San Diego flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Boston to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to San Diego.

  • Can I find deals for business class flights from Boston to San Diego?

    Yes. Cheapflights offers flight deals from Boston to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, March is the cheapest month in which you can book a flight from Boston to San Diego (average of £87). Flying from Boston to San Diego in July is currently the most expensive (average of £146). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
El Cajon

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Alternative routes for Boston to San Diego

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

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How does Cheapflights help users find flights from Boston to San Diego?

When you search for this flight from Boston to San Diego, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Boston to San Diego?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to San Diego from Boston.

Can Cheapflights find flights from Boston to San Diego with no change fees?

Yes, we can. To see specific flights from Boston to San Diego with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Boston to San Diego become cheaper?

Not ready to book yet? You can track prices for flights from Boston to San Diego on Cheapflights with our Price Alert feature and get notified when better prices are available.

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