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Cheap flights from Boston to San Diego from £94

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 29/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAN
26 Feb — 5 Mar1
1 adult

Cheap 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 21 February 2025.

Round-trip from

£173

One-way from

£94

Popular in

December

Cheapest in

January

Average price

£294
Spirit Airlines
  • Spirit Airlines
  • 7/4-14/4
  • 4 total stops
  • 46h 13m total
  • Boston to San Diego
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Hawaiian Airlines
  • Hawaiian Airlines
  • 29/3
  • Nonstop
  • 6h 47m total
  • Boston to San Diego
Search Deals
High demand for flights, 2% potential price rise
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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 2025
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Find flight deals from Boston to San Diego

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 21 February 2025.

Mon 7/418:13BOS - SAN
2 stops33h 23mSpirit Airlines
Mon 14/421:08SAN - BOS
2 stops12h 50mSpirit Airlines
Deal found 20/2£173
Sat 29/317:10BOS - SAN
Nonstop6h 33mDelta
Sat 5/422:00SAN - BOS
Nonstop5h 27mDelta
Deal found 20/2£188
Mon 7/419:59BOS - SAN
1 stop16h 12mAlaska Airlines
Tue 15/410:11SAN - BOS
Nonstop5h 48mAlaska Airlines
Deal found 20/2£190
Wed 19/311:30BOS - SAN
1 stop11h 57mJetBlue
Tue 1/420:24SAN - BOS
Nonstop5h 36mJetBlue
Deal found 20/2£196
Wed 2/407:43BOS - SAN
1 stop9h 13mUnited Airlines
Mon 14/412:45SAN - BOS
1 stop8h 14mUnited Airlines
Deal found 19/2£216
Thu 8/521:45BOS - SAN
2 stops15h 45mSouthwest
Tue 13/521:20SAN - BOS
1 stop10h 00mSouthwest
Deal found 19/2£228
Sun 6/407:17BOS - SAN
1 stop13h 02mSun Country Air
Fri 11/418:14SAN - BOS
1 stop13h 28mSun Country Air
Deal found 20/2£309
Mon 16/609:15BOS - SAN
Nonstop6h 24mHawaiian Airlines
Fri 20/621:00SAN - BOS
Nonstop5h 54mHawaiian Airlines
Deal found 21/2£316
Sun 16/313:10BOS - SAN
2 stops12h 01mAmerican Airlines
Wed 19/306:30SAN - BOS
2 stops11h 16mAmerican Airlines
Deal found 20/2£324

Find flights from Boston to San Diego within your budget

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 21 February 2025.

Fly from

Boston

Fly to

San Diego

Route

Depart

Return

Price

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Mon 7/4

18:13-00:36

2 stops33h 23m

San Diego

Mon 14/4

21:08-12:58

2 stops12h 50m

£173

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 29/3

17:10-20:43

Nonstop6h 33m

San Diego

Sat 5/4

22:00-06:27

Nonstop5h 27m

£188

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Mon 7/4

19:59-09:11

1 stop16h 12m

San Diego

Tue 15/4

10:11-18:59

Nonstop5h 48m

£190

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Wed 2/4

07:43-13:56

1 stop9h 13m

San Diego

Mon 14/4

12:45-23:59

1 stop8h 14m

£216

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 25/3

15:10-18:38

Nonstop6h 28m

San Diego

Tue 25/3

21:37-11:00

1 stop10h 23m

£227

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Thu 8/5

21:45-10:30

2 stops15h 45m

San Diego

Tue 13/5

21:20-10:20

1 stop10h 00m

£228

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sun 6/4

07:17-17:19

1 stop13h 02m

San Diego

Fri 11/4

18:14-10:42

1 stop13h 28m

£309

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Mon 16/6

09:15-12:39

Nonstop6h 24m

San Diego

Fri 20/6

21:00-05:54

Nonstop5h 54m

£316

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sun 16/3

13:10-22:11

2 stops12h 01m

San Diego

Wed 19/3

06:30-20:46

2 stops11h 16m

£324

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Sat 29/3

16:49-20:36

Nonstop6h 47m

£94

Flights are sorted by cheapest return flights first.

Deals found on 21/2

Showing 1-10 of 16 results
1
2

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.

Travel insights for flights from Boston to San Diego

Get recent, data-driven insights about flights from Boston to San Diego including ideal travel times, pricing trends, and more.

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 14 February 2025.

To ensure you get the cheapest price possible for a flight from Boston to San Diego, you should look to book at least 53 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, January is the cheapest month in which you can book a flight from Boston to San Diego (average of £585). Flying from Boston to San Diego in July is currently the most expensive (average of £920). 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 21 February 2025.

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.

Weekly flight availability from Boston to San Diego

Explore weekly flight availability from Boston to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 21 February 2025.

The most flights from BOS to SAN are scheduled on a Monday (10 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 58.0 inches per month. February is typically the wettest month, when rainfall can reach 58.0 mm. July is typically the driest time to visit San Diego when rainfall is around 0.0 mm.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated 21 February 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines and Delta from Boston to San Diego by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very Good
4,408 reviews
Check prices

Crew

8.7

Entertainment

7.6

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very Good
4,408 reviews
Southwest
8.1
Very Good
4,408 reviews
Check prices

Crew

8.7

Entertainment

7.6

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very Good
9,697 reviews
Southwest
8.1
Very Good
4,408 reviews
Check prices

Crew

8.7

Entertainment

7.6

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very Good
8,217 reviews
Southwest
8.1
Very Good
4,408 reviews
Check prices

Crew

8.7

Entertainment

7.6

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very Good
4,408 reviews
Check prices

Crew

8.7

Entertainment

7.6

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

JetBlue
7.4
Good
3,069 reviews
Southwest
8.1
Very Good
4,408 reviews
Check prices

Crew

8.7

Entertainment

7.6

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

No issues. I needed pre boarding and I was able to get it without issue

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.

  • What are the cheapest airlines flying from Boston to San Diego round-trip?

    Currently priced at £173, 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. Search Cheapflights for deals from Delta and Alaska Airlines - these airlines can fly you to your destination from £188 and £190, respectively. Spirit Airlines is priced at 44% lower than the current average price of a flight leaving 3 months from now.

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

    For one-way options, check prices for Hawaiian Airlines. According to our data, you can fly for as low as £94. Users have also found prices from £99 and £101 on United Airlines and Alaska Airlines, respectively.

  • 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: JetBlue (81%), Hawaiian Airlines (80%), American Airlines (78%).

  • 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, January is the cheapest month in which you can book a flight from Boston to San Diego (average of £585). Flying from Boston to San Diego in July is currently the most expensive (average of £920). 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

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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.

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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.

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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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