Q: How much does it cost for a return flight from Boston to San Francisco?

Airfare is below average for this route at the moment. Boston to San Francisco flights typically cost between ₹ 31,274 and ₹ 51,382 in September. The cheapest return price found within the last 5 days was ₹ 26,972 on JetBlue (15 Sept–23 Sept).

Question 1

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 17% of flights being delayed.

Question 2

How much does it cost for a return flight from Boston to San Francisco?

Accepted Answer

Airfare is below average for this route at the moment.Boston to San Francisco flights typically cost between ₹ 31,274 and ₹ 51,382 in September.
The cheapest return price found within the last 5 days was ₹ 26,972 on JetBlue (15 Sept–23 Sept).

Question 3

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.

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 Thursday has historically faced a higher average of delays compared to other days of the week.

Question 5

How often are flights from Boston to San Francisco delayed?

Accepted Answer

About 20% of weekly flights between Boston and San Francisco have experienced delays in the past year, with the average delay time being 169 minutes.

Question 6

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 3 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

Question 7

How long is the flight from Boston to San Francisco?

Accepted Answer

A quick flight from Boston to San Francisco can take about 6h 30m. Delta provides one of the quickest options available for as low as ₹ 29,679. The distance from Boston to San Francisco is about 4339 km. Generally, flights for this route are direct.

Question 8

What is the cheapest airline to fly from Boston to San Francisco round-trip?

Accepted Answer

JetBlue, at ₹ 28,269, was found to be the cheapest airline from Boston to San Francisco.. JetBlue is currently priced 27% below the average price you’ll pay for this route.

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 45 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, January is the cheapest month in which you can book a flight from Boston to San Francisco (average of ₹ 32,772). Flying from Boston to San Francisco in June is currently the most expensive (average of ₹ 44,566). 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 Monday (51 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (28 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 LATAM Airlines (85%), Air China (83%) or Korean Air (82%) 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 morning. If you’re flexible enough to do this you can expect to save up to 57% on your trip compared to booking a flight at midday.

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 40 flights from Logan Intl (BOS) to San Francisco (SFO) per day to choose from. Flights to San Francisco from Logan Intl are available from 1 airline, which means you should have some options if you want to compare airfare deals. 6h 38m 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	₹ 26,972
One-way from	₹ 15,854
Popular in	June
Cheapest in	January
Average price	₹ 38,959

Cheap flights from Boston to San Francisco from ₹ 15,854

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 19/8. 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 23 July 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 23 July 2026.

Best flights from Boston to San FranciscoDiscover carefully curated flight deals from Boston to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 July 2026.

Discover carefully curated flight deals from Boston to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 July 2026.

Direct flights from Boston to San FranciscoExplore direct flight options from Boston to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 23 July 2026.

Explore direct flight options from Boston to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 23 July 2026.

Last-minute flights from Boston to San FranciscoDiscover last-minute flight deals from Boston to San Francisco. Data last updated 23 July 2026 and is based on user searches.

Discover last-minute flight deals from Boston to San Francisco. Data last updated 23 July 2026 and is based on user searches.

One-way flights from Boston to San FranciscoSearch for one-way flight options from Boston to San Francisco. Find affordable one-way fares based on user searches. Data last updated 23 July 2026.

Search for one-way flight options from Boston to San Francisco. Find affordable one-way fares based on user searches. Data last updated 23 July 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

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

The best time to book flights from Boston to San Francisco is 45 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.

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?

A simple way to save on the total cost of your ticket is to fly from Boston to San Francisco in the morning. If you’re flexible enough to do this you can expect to save up to 57% on your trip compared to booking a flight at midday.

How much does it cost for a return flight from Boston to San Francisco?

Airfare is below average for this route at the moment.

Boston to San Francisco flights typically cost between ₹ 31,274 and ₹ 51,382 in September.The cheapest return price found within the last 5 days was ₹ 26,972 on JetBlue (15 Sept–23 Sept).

Weekly flight availability from Boston to San Francisco

The most flights from BOS to SFO are scheduled on a Monday (51 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (28 on average).

How often are flights from Boston to San Francisco delayed?

About 20% of weekly flights between Boston and San Francisco have experienced delays in the past year, with the average delay time being 169 minutes.

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

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

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

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

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

Over the past year, United Airlines have had the lowest number of delays on this route, with just 17% of flights being delayed.

Reviews of airlines servicing San Francisco

See what other customers who have flown with 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

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 is the cheapest airline to fly from Boston to San Francisco round-trip?

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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Boston and San Francisco flights

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Top airline 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 23 July 2026.

Best flights from Boston to San Francisco
Discover carefully curated flight deals from Boston to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 July 2026.

Direct flights from Boston to San Francisco
Explore direct flight options from Boston to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 23 July 2026.

Last-minute flights from Boston to San Francisco
Discover last-minute flight deals from Boston to San Francisco. Data last updated 23 July 2026 and is based on user searches.

One-way flights from Boston to San Francisco
Search for one-way flight options from Boston to San Francisco. Find affordable one-way fares based on user searches. Data last updated 23 July 2026.

Boston to San Francisco flights typically cost between ₹ 31,274 and ₹ 51,382 in September.
The cheapest return price found within the last 5 days was ₹ 26,972 on JetBlue (15 Sept–23 Sept).