Question 1

How popular is this Boston to San Diego flight route?

Accepted Answer

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

Question 2

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

Accepted Answer

Currently priced at £180, Southwest will fly you from Boston to San Diego and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Alaska Airlines and United Airlines - these airlines can fly you to your destination from £182 and £185, respectively. Southwest is priced at 36% lower than the current average price of a flight leaving 3 months from now.

Question 3

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

Accepted Answer

For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as £109. Users have also found prices from £113 and £117 on Southwest and JetBlue, respectively.

Question 4

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

Accepted Answer

To ensure you get the cheapest price possible for a flight from Boston to San Diego, you should look to book at least 67 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.

Question 5

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

Accepted Answer

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.

Question 6

Weekly flight availability from Boston to San Diego

Accepted Answer

The most flights from BOS to SAN are scheduled on a Thursday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 on average).

Question 7

E

Accepted Answer

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.

Question 8

E

Accepted Answer

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).

Question 9

What are the cheapest flights from Boston to San Diego?

Accepted Answer

While on average a flight from Boston to San Diego is generally £187, our data shows the cheapest flight currently is £181. When looking at the most popular route, (Boston Logan Intl - San Diego), you can expect to pay £183 for that flight.

Question 10

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

Accepted Answer

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: KLM (100%), TAP AIR PORTUGAL (99%), JetBlue (97%).

Question 11

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

Accepted Answer

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 50 days in advance, which can save you up to 81% on flights from Boston to San Diego compared to booking the week you need them. Waiting 50 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £325. For sooner than that we have options available in the next 3 days from £522.

Question 12

What is the cheapest month to fly from Boston to San Diego?

Accepted Answer

January is one of the best times of the year to fly to San Diego from Boston. Prices for January average £283 per person but you can even find prices for as low as £84. The most expensive prices can be found in the month of December. Opting for a January flight can save you 23% on your journey compared to booking in December

Question 13

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

Accepted Answer

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.

Question 14

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

Accepted Answer

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

Question 15

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

Accepted Answer

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.

Question 16

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

Accepted Answer

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.

Question 17

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

Accepted Answer

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.

Question 18

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

Accepted Answer

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.

Question 19

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

Accepted Answer

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.

Question 20

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

Accepted Answer

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.

Round-trip from	£180
One-way from	£109
Popular in	December
Cheapest in	January
Average price	£300
Good one-way deal	£183 or less

Cheap flights from Boston to San Diego from £109

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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Boston to San Diego

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Find flight deals from Boston to San Diego

Cheapest flights from Boston to San DiegoExplore 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 11 July 2025.

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 11 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Boston to San Diego that are best for you.

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.

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 27 June 2025.

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

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 11 July 2025.

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 11 July 2025.

Reviews of airlines servicing San Diego

See what other customers who have flown with Alaska Airlines, Southwest, andDelta from Boston to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

What are the cheapest flights from Boston to San Diego?

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

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

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

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

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

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

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

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

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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 11 July 2025.