$170 Cheap Frontier Airlines flights Boston (BOS) to San Diego (SAN)

View $170 flight on Mon, Aug 18, 2025Opens in a new window

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$170 Cheap Frontier Airlines flights Boston (BOS) to San Diego (SAN)

Prices were available within the past 7 days and start at $170 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Boston (BOS) to San Diego (SAN)
Origin airport
Logan Intl.
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, JetBlue Airways, Southwest Airlines, Spirit Airlines, Sun Country Airlines, United
Popular airline
JetBlue Airways
Distance
2581 mi
Average flight time
3 hours 59 mins

Frequently asked questions

How much is a Frontier Airlines flight from Logan Intl. Airport (BOS) to San Diego Intl. Airport (SAN)?
Landing cheap one-way Frontier Airlines flights from BOS to SAN from $170 on Expedia is a breeze --- just filter by "Price (lowest to highest)." Or check out our budget-friendly return fares for your next exciting vacation.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from BOS to SAN with Frontier Airlines?
January is one of the most affordable months to jet off to San Diego with Frontier Airlines. You could also find great prices on one-way and return fares in November.
What is the cheapest time to book flights from Logan Intl. Airport (BOS) to San Diego Intl. Airport (SAN) with Frontier Airlines?
To find cheap Frontier Airlines fares from Logan Intl. Airport (BOS) to San Diego Intl. Airport (SAN), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact how much you pay. Sunday is usually the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your journey on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Frontier Airlines fly nonstop from Logan Intl. Airport (BOS) to San Diego Intl. Airport (SAN)?
Enter your dates, hit search and select the "Nonstop" filter on Expedia to browse any direct flights from BOS to SAN with Frontier Airlines or other carriers.
What is the earliest Frontier Airlines flight from BOS to SAN?
To find the earliest departures from BOS to SAN with Frontier Airlines, sort your results by "Morning" and "Early Morning." Choosing an early flight usually means cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Frontier Airlines fly into in San Diego?
San Diego Intl. Airport (SAN) is the primary San Diego gateway for Frontier Airlines flights from Logan Intl. Airport (BOS).
Why fly with Frontier Airlines from BOS to SAN?
A rewarding loyalty program and the ability to collect points through Frontier Miles are the start of the reasons to jet off from BOS to SAN with Frontier Airlines. Plus, when you sign up to our One Key™ program, you can receive OneKeyCash™* in addition to any airline loyalty program earnings. It's yours to spend on your next adventure.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Frontier Airlines flight from Logan Intl. Airport (BOS) to San Diego Intl. Airport (SAN)?
Depending on the type of ticket you purchased, a fee generally applies if you change or cancel your booking more than 24 hours after it has been confirmed. To secure flexible fares, select our "No cancel fee" or "Changes included" filter while looking for flights. For more details on changing or canceling your reservation, head to "Trips," select your flight and click on "Manage Booking."

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*Available to One Key members.