WARNING: This offer requires self-connecting between two separate low-cost flights. If you miss your connection, you will NOT get a refund or be re-booked to the next flight! If you have checked luggage, it will NOT be transferred automatically to your connecting flight, you have to do it yourself!

To increase the chance of making your connecting flight, we recommend a transfer time of at least 3 hours. Remember to check in online for both flights before you depart.

Spirit Airlines & Frontier Airlines are selling cheap flights from Boston to San Diego for as low as $127 return! That works out to a cost of just 2.5 Cents Per Mile for this 5200 mile journey.

The fare only includes a small carry-on bag placed under the seat, and you need to pay extra if you want to use the overhead storage or to check bags.

Our data shows the lowest prices are available in January 2021. See the link(s) below for dates and prices.

Sample date(s) with Skyscanner.com booking link

Dec 2 – Dec 6 ($199)

Dec 6 – Dec 13 ($173)

Dec 10 – Dec 17 ($142)

Dec 11 – Dec 14 ($206)

Dec 17 – Dec 21 ($184)

Dec 19 – Dec 28 ($152)

Dec 24 – Dec 27 ($178)

Jan 2 – Jan 8 ($224)

Jan 4 – Jan 7 ($168)

Jan 6 – Jan 10 ($127)

Are you looking for an apartment to rent for your stay in San Diego? Check out what Vrbo.com has to offer!

We post many cheap flights like this one from Boston to San Diego every single day, so have a look at our Travel Deals page, or check out the related posts below!

Note: Prices are valid at the time of publishing this post, but may change in the future.

COVID-19 Note: During these uncertain times, please make sure to check the relevant Coronavirus restrictions for your destination before you book and before you fly. We recommend also checking the refund policy of the airline, as well as purchasing travel insurance for your trip.

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