Question 1

Can stopping save me money on Boston to San Francisco flights?

Accepted Answer

No. A direct flight is the cheapest option for a flight between Boston to San Francisco.

Question 2

How many flights depart from Boston to San Francisco on average per day?

Accepted Answer

As of December 2025, there are 30 flights per day flying from Boston to San Francisco. The most common time of day flights depart is 8:00AM, with 43% of flights taking off at noon.

Question 3

What cabin class options are available on Boston Logan Intl to San Francisco flights?

Accepted Answer

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

Question 4

What airlines fly to San Francisco?

Accepted Answer

JetBlue, United Airlines and Delta are the top three most popular airlines that fly to San Francisco from Boston according to our data. JetBlue is the first choice among our users, with 39% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 9 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

Question 5

How often are flights from Boston to San Francisco delayed?

Accepted Answer

Historically, on average around 16% of flights between Boston and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 170 minutes.

Question 6

What is the most punctual flight time for Boston to San Francisco flights?

Accepted Answer

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Question 7

What is the cheapest month to fly to San Francisco?

Accepted Answer

If you aren’t able to travel to San Francisco during the month of March, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $336.

Question 8

What is the cheapest time of day to depart on your flight to San Francisco?

Accepted Answer

Our data shows that the cheapest Boston to San Francisco flights are usually those with departure times in the evening. Our users have found flights to San Francisco in the evening for as low as $335. Flights at noon are often more expensive with an average ticket price of $519.

Question 9

How far in advance should I book a flight to San Francisco?

Accepted Answer

You are more likely to see cheaper flights to San Francisco from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $368 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Boston for as low as $327 on momondo.

Question 10

What is the cheapest Boston Logan Intl to San Francisco flight route?

Accepted Answer

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

Question 11

Which layover airport has the shortest travel time from Boston to San Francisco?

Accepted Answer

Flights connecting via San Diego (SAN) have the shortest average one-way travel time: 8h 57m.

Question 12

How many flights depart from Boston to San Francisco on average per week?

Accepted Answer

The number of flights available between Boston and San Francisco is 213 per week as of December 2025. The most frequent departure day is Fri, with 20% of weekly flights leaving on this day.

Question 13

Which layover airport offers the lowest fares from Boston to San Francisco?

Accepted Answer

Flights via Charlotte (CLT) offer the lowest average round-trip price of $277.

Question 14

What is the cheapest day to depart on your flight to San Francisco?

Accepted Answer

The cheapest day to depart from Boston to San Francisco is on a Wednesday when prices can be found for as low as $382. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $544.

Question 15

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Question 16

How have Boston to San Francisco flight prices changed over time?

Accepted Answer

As of December 2025, prices for Boston to San Francisco flights are approximately 5% more expensive when compared to flights at the same time last year.

Question 17

Which airline has the best punctuality record on Boston to San Francisco flights?

Accepted Answer

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 13% of their flights experiencing any sort of delay.

Question 18

Which airport is the most popular layover for flights between Boston and San Francisco?

Accepted Answer

Orlando (MCO) was the most common stop: 25% of momondo users choosing 1-stop flights on this route connected there.

Question 19

What is the cheapest airline that flies from Boston Logan Intl to San Francisco?

Accepted Answer

Alaska Airlines, United Airlines, and Delta are the most popular carriers operating from Boston Logan Intl to San Francisco

Question 20

Which layover airport has the shortest connection time from Boston to San Francisco?

Accepted Answer

San Diego (SAN) has the shortest average layover time for this route: 1h 20m.

Question 21

Which airlines fly direct from Boston to San Francisco?

Accepted Answer

In Boston, flights to San Francisco depart at Logan International Airport (BOS) and Manchester Regional Airport (MHT). The flights then land at San Francisco International Airport (SFO), Oakland Airport (OAK), and San Jose Airport (SJC). This route is served by at least six airlines, including Alaska, American, Delta, JetBlue, Spirit, and United Airlines. In case you want to fly directly, you’ll be happy to hear that all the airlines offer direct flights. Note that direct flights are only available at BOS. In case you want to travel aboard one, book your ticket the earliest you can, given that the demand for these flights is ever high. The airlines also offer one and two-stop options. If you intend to travel aboard such a flight, your stopover destination(s) will be dependent on your airline, since the different airlines that ply this route stopover at different destinations. Some of the notable layover airports for flights to San Francisco from Boston include Atlanta (ATL), Dallas (DFW), Houston (IAH), Chicago (MDW), and Las Vegas (LAS).

What is the best way to get in and out of airports in Boston and San Francisco?

To travel to Logan International Airport (BOS), you can take an MBTA Blue Line subway, a taxi, a water ferry, or a Logan Express Bus. Taking the MBTA Blue Line subway is the best way to get to this airport since it is the most economical. To travel to Manchester Regional Airport (MHT), you can take a bus or a taxi. Taking a bus is advisable if you’re in a rush while taking a taxi is recommended if you’re in a rush. Alternatively, you can travel to BOS or MHT using your car. You can find a secure parking spot at either since they feature several long-term and extended stay, short-term, and economy rate parking spots you can take advantage of. In San Francisco, the most suitable option for traveling to the city will depend on your arrival airport. In case you land at San Francisco International Airport (SFO) or Oakland Airport (OAK), the best way is via a Bart subway. On the other hand, if you land at San Jose Airport (SJC), the most efficient way is via the VTA Line 60 shuttle bus to the Santa Clara CalTrain station. At this station, you can catch a train into the city center.

What are the benefits of the different airports in Boston and San Francisco?

Logan International Airport (BOS), Manchester Regional Airport (MHT), San Francisco International Airport (SFO), Oakland Airport (OAK), and San Jose Airport (SJC) have all invested in their amenities. At any, you’ll find lounges, nursing rooms, prayer rooms, children’s play areas, information desks, handicapped toilets, and staff trained on how to offer special assistance to guests with disabilities. Each of the airports has its advantages. Apart from being the closest to the destinations and the only ones serving direct flights, BOS and SFO offer the cheapest flights on the route. MHT, OAK, and SJC face lesser passenger traffic than BOS and SFO. Thus, at MHT, you will have an easier time checking in and boarding your flight, while at OAK or SJC, you will have an easier time checking out. Between OAK and SJC, OAK is the better option simply because it is closer to San Francisco.

Which cities can you get to from San Francisco International Airport?

Depending on your means of transportation, there are several towns you can get to from San Francisco International Airport (SFO). For instance, if you board a BART train, you can get to northern San Mateo County and the East Bay directly, while if you board a Caltrain commuter rail, you can get to Millbrae, Palo Alto, Gilroy, and San Jose.  If you rent a car, you can enjoy a road trip to San Bruno, Tanforan, Burlingame, Brisbane, Westborough, and San Mateo. Renting a car at this airport is quite easy simply because it has a Rental Car Center. This center, accessible via the AirTrain Blue Line, is home to agencies like Alamo, Sixt, Avis, National, Budget, Dollar, Enterprise, Hertz, and Thrifty.

Question 22

When did momondo last update prices for flights from Boston Logan Intl Airport to San Francisco Airport?

Accepted Answer

Prices for flights from Boston Logan Intl Airport to San Francisco Airport are updated daily.

Question 23

How many operators does momondo search for flights from Boston Logan Intl Airport to San Francisco Airport?

Accepted Answer

As of December 2025, there are 9 operators available to choose from for flights from Boston Logan Intl Airport to San Francisco Airport.

Question 24

How old do you have to be to fly from Boston Logan Intl Airport to San Francisco Airport?

Accepted Answer

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to San Francisco Airport.

Question 25

What documentation or ID do you need to fly to San Francisco Airport?

Accepted Answer

The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best Price Found	$214
Fastest flight time	6h 30m
Direct flights	Every day
Airports in San Francisco	1 airport

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $92	Free Cancellation	Rating 5.8 3,070 reviews	Search Frontier flights
Hawaiian Airlines	PriceFrom $129	Free Cancellation	Rating 7.8 2,819 reviews	Search Hawaiian Airlines flights
Southwest	PriceFrom $153	Free Cancellation	Rating 8.0 4,256 reviews	Search Southwest flights
Delta	PriceFrom $194	Free Cancellation	Rating 7.9 8,022 reviews	Search Delta flights
JetBlue	PriceFrom $198	Free Cancellation	Rating 7.2 2,902 reviews	Search JetBlue flights
Sun Country Air	PriceFrom $202	Free Cancellation	Rating 6.9 335 reviews	Search Sun Country Air flights
United Airlines	PriceFrom $228	Free Cancellation	Rating 7.4 9,116 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $236	Free Cancellation	Rating 8.0 11,549 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $256	Free Cancellation	Rating 7.2 11,069 reviews	Search American Airlines flights

Cheap flights from Boston to San Francisco from $118

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to San Francisco departing on 1/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Boston to San Francisco

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Alaska Airlines flights from Boston to San Francisco

Our best Alaska Airlines deals on Boston to San Francisco flight tickets

United Airlines flights from Boston to San Francisco

Our best United Airlines deals on Boston to San Francisco flight tickets

momondo Fare Finder

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

See travel insights to San Francisco from

How to get the cheapest flight ticket from Boston to San Francisco