Question 1

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 $323. Flights at noon are often more expensive with an average ticket price of $547.

Question 2

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

Accepted Answer

Flights via Phoenix (PHX) offer the lowest average round-trip price of $247.

Question 3

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 10 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

Question 4

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 5

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 September, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $331.

Question 6

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

Accepted Answer

As of August 2025, prices for Boston to San Francisco flights are approximately 8% cheaper when compared to flights at the same time last year.

Question 7

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 $357 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 $325 on momondo.

Question 8

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

Accepted Answer

As of August 2025, there are 47 flights per day flying from Boston to San Francisco. The most common time of day flights depart is 7:00AM, with 47% of flights taking off at noon.

Question 9

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 333 per week as of August 2025. The most frequent departure day is Thu, with 19% of weekly flights leaving on this day.

Question 10

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

Accepted Answer

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

Question 11

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

Accepted Answer

Phoenix (PHX) has the shortest average layover time for this route: 0h 55m.

Question 12

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 13

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 $373. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $537.

Question 14

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

Accepted Answer

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

Question 15

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 16

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

Accepted Answer

Flights connecting via Minneapolis (MSP) have the shortest average one-way travel time: 8h 28m.

Question 17

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 18

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 19

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

Accepted Answer

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

Question 20

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 21

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	$111
Fastest flight time	6h 28m
Direct flights	Every day
Airports in San Francisco	1 airport

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $84	Free Cancellation	Rating 5.8 3,241 reviews	Search Frontier flights
Hawaiian Airlines	PriceFrom $129	Free Cancellation	Rating 7.8 2,611 reviews	Search Hawaiian Airlines flights
Sun Country Air	PriceFrom $150	Free Cancellation	Rating 6.9 334 reviews	Search Sun Country Air flights
Southwest	PriceFrom $153	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights
Delta	PriceFrom $171	Free Cancellation	Rating 8.0 7,983 reviews	Search Delta flights
American Airlines	PriceFrom $175	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
JetBlue	PriceFrom $196	Free Cancellation	Rating 7.2 2,915 reviews	Search JetBlue flights
United Airlines	PriceFrom $227	Free Cancellation	Rating 7.4 8,901 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $227	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights

Cheap flights from Boston to San Francisco from $111

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 8/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of September, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $331.

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

The cheapest day to depart from Boston to San Francisco is on a Wednesday when prices can be found for as low as $373. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $537.

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

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 $323. Flights at noon are often more expensive with an average ticket price of $547.

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

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

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

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

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.

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

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

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

As of August 2025, prices for Boston to San Francisco flights are approximately 8% cheaper when compared to flights at the same time last year.

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

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

What airlines fly to San Francisco?

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

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

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

Flights via Phoenix (PHX) offer the lowest average round-trip price of $247.

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

Flights connecting via Minneapolis (MSP) have the shortest average one-way travel time: 8h 28m.

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

Phoenix (PHX) has the shortest average layover time for this route: 0h 55m.

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

As of August 2025, there are 47 flights per day flying from Boston to San Francisco. The most common time of day flights depart is 7:00AM, with 47% of flights taking off at noon.

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

The number of flights available between Boston and San Francisco is 333 per week as of August 2025. The most frequent departure day is Thu, with 19% of weekly flights leaving on this day.

When to book flights from Boston to San Francisco

Cheap Boston to San Francisco (BOS to SFO) flight deals and tips

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How far is Boston Logan Intl to San Francisco by plane?

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

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

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

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

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What is the most popular airline from Boston to San Francisco?

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