Cheapflights Tip: The best prices from Boston Logan Intl to San Diego are usually found in January or October, booked 67 days in advance, depart on a Monday or Tuesday and return on a Monday
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 27 January 2026.
Popular in
December
Cheapest in
January
Average price
C$ 447
Highest demand for flights based on searches. 2% potential increase in price (C$ 15 potential increase over avg. RT price).
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 round-trip 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
Prices
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Delays
How far ahead should I book a flight from Boston to San Diego?
Use this chart to determine the optimal time to book a round-trip flight from Boston to San Diego. Price data was last updated on 23 January 2026.
The best time to book flights from Boston to San Diego is 67 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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 C$ 161). Flying from Boston to San Diego in July is currently the most expensive (average of C$ 269). 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 27 January 2026.
When flying from Boston to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
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 27 January 2026.
The most flights from BOS to SAN are scheduled on a Monday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).
How often are flights from Boston to San Diego delayed?
About 14% of weekly flights between Boston and San Diego have experienced delays in the past year, with the average delay time being 148 minutes.
What is the most punctual flight time for Boston to San Diego flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Wednesday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Boston to San Diego flights?
Over the past year, JetBlue has had the lowest number of delays on this route, with just 10% of flights being delayed.
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?
The Boston Logan Intl to San Diego flight path was viewed by 4 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
What are the most reliable airlines from Boston to San Diego?
No one likes to see their flight delayed. When booking a flight from Boston to San Diego consider choosing TAP AIR PORTUGAL (88%), JetBlue (84%) or KLM (75%) as they are the most reliable in getting you off to your destination on time.
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 vacation 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 C$ 161). Flying from Boston to San Diego in July is currently the most expensive (average of C$ 269). 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.
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 27 January 2026.
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Boston to San Diego?
Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Boston to San Diego. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
Why should you use Cheapflights to find cheap flight tickets from Boston to San Diego?
Cheapflights simply makes it quick and affordable to book flights from Boston to San Diego by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
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?
Of course! You can now track prices for flights from Boston to San Diego and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.
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