Question 1

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

Accepted Answer

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often. Find deals

Question 2

How often are flights from Boston to San Francisco delayed?

Accepted Answer

About 16% of weekly flights between Boston and San Francisco have experienced delays in the past year, with the average delay time being 170 minutes. Find deals

Question 3

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

Accepted Answer

Over the past year, United Airlines have had the lowest number of delays on this route, with just 13% of flights being delayed. Find deals

Question 4

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

Accepted Answer

Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week. Find deals

Question 5

How popular is this Boston to San Francisco flight route?

Accepted Answer

This flight path from Boston Logan Intl to San Francisco was viewed by 8 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

Question 6

How long is the flight from Boston to San Francisco?

Accepted Answer

A quick flight from Boston to San Francisco can take about 6h 58m. Delta provides one of the quickest options available for as low as ₹ 23,553. The distance from Boston to San Francisco is about 4339 km. Generally, flights for this route are direct.

Question 7

What are the cheapest airlines flying from Boston to San Francisco round-trip?

Accepted Answer

Delta, at ₹ 11,867, was found to be the cheapest airline from Boston to San Francisco. An alternate airline flying to your destination would be JetBlue. Delta is currently priced 64% below the average price you’ll pay for this route.

Question 8

What are the cheapest airlines to fly from Boston to San Francisco one-way?

Accepted Answer

The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as ₹ 9,009. However, be on the lookout for offers from JetBlue and Hawaiian Airlines, as they are both options that can get you from Boston to San Francisco for a low price.

Question 9

How far ahead should I book a flight from Boston to San Francisco?

Accepted Answer

The best time to book flights from Boston to San Francisco is 67 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Question 10

What is the cheapest month to book a flight from Boston to San Francisco?

Accepted Answer

Currently, March is the cheapest month in which you can book a flight from Boston to San Francisco (average of ₹ 9,256). Flying from Boston to San Francisco in July is currently the most expensive (average of ₹ 17,229). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 11

Weekly flight availability from Boston to San Francisco

Accepted Answer

The most flights from BOS to SFO are scheduled on a Friday (30 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (16 on average).

Question 12

E

Accepted Answer

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

Question 13

E

Accepted Answer

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

Question 14

What are the most reliable airlines from Boston to San Francisco?

Accepted Answer

Consider KLM (97%), Hawaiian Airlines (85%) or JetBlue (85%) when booking your flight. These represent the most reliable airlines when flying from Boston to San Francisco.

Question 15

What is the cheapest time of day to fly from BOS to SFO?

Accepted Answer

A simple way to save on the total cost of your ticket is to fly from Boston to San Francisco in the evening. If you’re flexible enough to do this you can expect to save up to 62% on your trip compared to booking a flight in the afternoon.

Question 16

What airports do I use to fly from Boston to San Francisco?

Accepted Answer

If you wish to fly to San Francisco from Boston, then you need to book flights from Boston Logan Intl to San Francisco. There are 23 flights from Logan Intl (BOS) to San Francisco (SFO) per day to choose from. Flights to San Francisco from Logan Intl are available from 2 different airlines, which means you should have some options if you want to compare airfare deals. 7h 00m is how long a nonstop flight from Boston to San Francisco typically takes.

Question 17

Can I find deals for flights from Boston to San Francisco that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Boston to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 18

How can I find direct flights from Boston to San Francisco?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to San Francisco.

Question 19

Can I find deals for business class flights from Boston to San Francisco?

Accepted Answer

Yes. Cheapflights offers flight deals from Boston to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 20

How does Cheapflights help users find flights from Boston to San Francisco?

Accepted Answer

When you search for this flight from Boston to San Francisco, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Question 21

Why should you use Cheapflights to find cheap flight tickets from Boston to San Francisco?

Accepted Answer

Millions of users choose and trust Cheapflights to book the best flight deals from Boston to San Francisco for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Question 22

Can Cheapflights find flights from Boston to San Francisco with no change fees?

Accepted Answer

Users can book flights with no change fees policies with our dedicated filters. Book flights from Boston to San Francisco flexibly with Cheapflights today.

Question 23

Can Cheapflights notify me if prices for flights from Boston to San Francisco become cheaper?

Accepted Answer

Of course! You can now track prices for flights from Boston to San Francisco and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

Round-trip from	₹ 19,887
One-way from	₹ 10,906
Popular in	December
Cheapest in	March
Average price	₹ 31,343

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest₹ 11,867	Average₹ 24,149	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
JetBlue	Cheapest₹ 20,767	Average₹ 31,890	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights

Cheap flights from Boston to San Francisco from ₹ 10,906

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/3. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Boston to San Francisco

Cheapest flights from Boston to San FranciscoExplore the most affordable flight options available from Boston to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 January 2026.

Explore the most affordable flight options available from Boston to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 January 2026.

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Best time to book a flight from Boston to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Boston with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Boston to San Francisco

How far ahead should I book a flight from Boston to San Francisco?

What is the cheapest month to book a flight from Boston to San Francisco?

What is the cheapest time of day to fly from BOS to SFO?

Weekly flight availability from Boston to San Francisco

How often are flights from Boston to San Francisco delayed?

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

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

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

Reviews of airlines servicing San Francisco

See what other customers who have flown with Delta and JetBlue from Boston to San Francisco have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Boston to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airports do I use to fly from Boston to San Francisco?

How popular is this Boston to San Francisco flight route?

How long is the flight from Boston to San Francisco?

What are the cheapest airlines flying from Boston to San Francisco round-trip?

What are the cheapest airlines to fly from Boston to San Francisco one-way?

What are the most reliable airlines from Boston to San Francisco?

Can I find deals for flights from Boston to San Francisco that include hotel bookings?

How can I find direct flights from Boston to San Francisco?

Can I find deals for business class flights from Boston to San Francisco?

What is the cheapest month to book a flight from Boston to San Francisco?

Travelling to a place near San Francisco?

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Top 2 airlines flying from Boston to San Francisco

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How does Cheapflights help users find flights from Boston to San Francisco?

Why should you use Cheapflights to find cheap flight tickets from Boston to San Francisco?

Can Cheapflights find flights from Boston to San Francisco with no change fees?

Can Cheapflights notify me if prices for flights from Boston to San Francisco become cheaper?

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Cheapest flights from Boston to San Francisco
Explore the most affordable flight options available from Boston to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 January 2026.