Cheap flights from California to Boston from $126

In general, January is the cheapest month to fly from California to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $321. If you aren’t able to travel during the month of January, then book flights to Boston from California during September instead. Flights to Boston in September, while not as cheap as those in January, still average around $374.

The cheapest day to depart from California to Boston is on a Tuesday when prices can be found for as low as $406. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Sunday is $495.

According to our data, the cheapest time of day to fly to Boston is in the afternoon. momondo users have found flights departing from California to Boston in the afternoon for as low as $392. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Boston, so prices are often more expensive at around $467 per ticket.

Fly from San Diego to Boston Logan Intl for the best California - Boston Logan Intl flight prices

You are more likely to see cheaper flights to Boston from California when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $398 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from California for as low as $322 on momondo.

There are 4 cabin classes available to choose from on California to Boston flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Frontier, United Airlines, and Alaska Airlines are the most popular carriers operating from California to Boston Logan Intl

JetBlue, United Airlines and Delta are the top three most popular airlines that fly to Boston from California according to our data. JetBlue is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Boston. Keep in mind that there are 9 different airlines that fly to Boston on a routine basis, so you have a few additional options to choose from.

As of August 2026, 99 flights take off from California and land in Boston each day. The most common flight departure time for this route is 10:00AM, with 46% of daily flights taking off at noon.

As of August 2026, 698 flights take off from California and land in Boston each week. The most common flight departure day for this route is Thu, with 19% of weekly flights taking off on this day.