Question 1

How popular is this San Francisco to Boston flight route?

Accepted Answer

This flight path from San Francisco to Boston Logan Intl was viewed by 13 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

Question 2

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

Accepted Answer

Currently priced at £188, Alaska Airlines will fly you from San Francisco to Boston and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from JetBlue and Southwest - these airlines can fly you to your destination from £190 and £191, respectively. You may be able to fly from San Francisco to Boston for 31% less than the average price by searching for these airlines.

Question 3

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

Accepted Answer

One-way options have recently been found by users for as low as £101 on Alaska Airlines. Other airlines that offer cheap prices include United Airlines from £102 and JetBlue from £105 one-way.

Question 4

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

Accepted Answer

Booking 64 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to Boston. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Question 5

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

Accepted Answer

Currently, October is the cheapest month in which you can book a flight from San Francisco to Boston (average of £10). Flying from San Francisco to Boston in July is currently the most expensive (average of £724). 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 6

What is the cheapest day to fly from San Francisco to Boston?

Accepted Answer

Travellers seeking maximum savings on their San Francisco to Boston flight should consider departing on Thursday evenings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 7

Weekly flight availability from San Francisco to Boston

Accepted Answer

The most flights from SFO to BOS are scheduled on a Monday (57 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (34 on average).

Question 8

E

Accepted Answer

In terms of precipitation, rainfall in Boston ranges from 78.0 - 101.0 inches per month. March is typically the wettest month, when rainfall can reach 101.0 mm. July is typically the driest time to visit Boston when rainfall is around 78.0 mm.

Question 9

E

Accepted Answer

If weather is an important factor for your trip to Boston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

Question 10

What are the cheapest flights from San Francisco to Boston?

Accepted Answer

The cheapest flight price from San Francisco to Boston is £86. On average you can expect to pay £637. The most popular route, (San Francisco - Boston Logan Intl), can usually be booked for £178.

Question 11

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

Accepted Answer

Before booking your flight to Boston from San Francisco, check out the most reliable airlines to get you to your destination on time: Etihad Airways (95%), American Airlines (87%), Fiji Airways( 85%).

Question 12

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

Accepted Answer

Sunday flights are found to be more expensive to fly from San Francisco to Boston. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Boston.

Question 13

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

Accepted Answer

To save on the cost of your flight from San Francisco to Boston, book at least 37 days before your planned departure. Booking around this time can save you about 61% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £311 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £389.

Question 14

What is the cheapest month to fly from San Francisco to Boston?

Accepted Answer

January is one of the best times of the year to fly to Boston from San Francisco. Prices for January average £273 per person but you can even find prices for as low as £86. The most expensive prices can be found in the month of June. Opting for a January flight can save you 23% on your journey compared to booking in June

Question 15

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

Accepted Answer

Unlike in the morning, when flights are generally more expensive, you can save up to 58% on flights from San Francisco to Boston by exploring options for tickets at midday.

Question 16

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

Accepted Answer

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

Question 17

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

Accepted Answer

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

Question 18

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

Accepted Answer

Yes. Cheapflights offers flight deals from San Francisco to Boston 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 19

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

Accepted Answer

Cheapflights helps you search for flights from San Francisco to Boston via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Question 20

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

Accepted Answer

Cheapflights simply makes it quick and affordable to book flights from San Francisco to Boston by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Question 21

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

Accepted Answer

Need flexible booking options for your flight to Boston from San Francisco? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Question 22

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

Accepted Answer

Of course! You can now track prices for flights from San Francisco to Boston 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	£188
One-way from	£101
Popular in	June
Cheapest in	January
Average price	£307
Good round-trip deal	£164 or less
Good one-way deal	£245 or less

Cheap flights from San Francisco to Boston from £101

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 21/7. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from San Francisco to Boston Logan Intl are usually found in January or February, booked 64 days in advance, depart on a Friday or Wednesday and return on a Thursday

Cheap flight deals from San Francisco to Boston

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Find flight deals from San Francisco to Boston

Cheapest flights from San Francisco to BostonExplore the most affordable flight options available from San Francisco to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 July 2025.

Explore the most affordable flight options available from San Francisco to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 July 2025.

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

Best time to book a flight from San Francisco to Boston

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

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a return flight from San Francisco to Boston. Price data was last updated on 27 June 2025.

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

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

Find hourly flight availability from San Francisco to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 1 July 2025.

Weekly flight availability from San Francisco to Boston

Explore weekly flight availability from San Francisco to Boston. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 1 July 2025.

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated 1 July 2025.

Read through reviews of airlines operating flights from San Francisco to Boston, such as Alaska Airlines, Southwest, andDelta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

How popular is this San Francisco to Boston flight route?

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

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

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

What are the cheapest flights from San Francisco to Boston?

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

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

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

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

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

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

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

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

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Cheapest flights from San Francisco to Boston
Explore the most affordable flight options available from San Francisco to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 July 2025.