Question 1

How popular is this San Francisco to Boston flight route?

Accepted Answer

The San Francisco to Boston Logan Intl flight path was viewed by 9 users in the past month. Keep an eye out for changes in search interest prior to high and low season. Find deals

Question 2

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

Accepted Answer

Currently priced at $394, United Airlines will fly you from San Francisco to Boston and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and JetBlue - these airlines can fly you to your destination from $395 and $397, respectively. United Airlines is 31% cheaper than the average price of flights available within the next 90 days to this destination. Find deals

Question 3

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

Accepted Answer

The cheapet airlines for a one-way flight from San Francisco to Boston are Alaska Airlines ($212), United Airlines ($214), and JetBlue ($220). Find deals

Question 4

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

Accepted Answer

The best time to book flights from San Francisco to Boston is 64 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. Find deals

Question 5

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

Accepted Answer

Currently, February is the cheapest month in which you can book a flight from San Francisco to Boston (average of $1,183). Flying from San Francisco to Boston in December is currently the most expensive (average of $1,631). 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 Wednesday at midday when fares are most often at their lowest. Saturday at midday 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 (61 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (50 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 most reliable airlines from San Francisco to Boston?

Accepted Answer

No one likes to see their flight delayed. When booking a flight from San Francisco to Boston consider choosing Etihad Airways(95%), American Airlines(87%) or Fiji Airways(85%), as they are the most reliable in getting you off to your destination on time.

Question 11

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

Accepted Answer

Travellers have found that booking a Tuesday departure is the best way to save up to 96% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

Question 12

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 $652 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $813.

Question 13

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

Accepted Answer

Flights from San Francisco to Boston lean towards being more expensive in June. Prices are generally better when you fly from San Francisco to Boston in January, with the cheapest ticket starting at $180.

Question 14

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

Accepted Answer

It’s optimal to fly from San Francisco to Boston in the morning. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight in the afternoon.

Question 15

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

Accepted Answer

Booking a flight from San Francisco (SFO) to Boston Logan Intl (BOS) is your only option if you wish to fly from San Francisco to Boston. On a typical day, there are 54 flights from San Francisco to Logan Intl, all of which are around 5h 42m for a nonstop flight. You can also purchase a plane ticket from 1 airline when you book a flight from San Francisco to Boston.

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

When you search for this flight from San Francisco to Boston, 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 20

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

Accepted Answer

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

Question 21

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

Accepted Answer

Certainly. Search results for flights to Boston from San Francisco shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Question 22

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

Accepted Answer

Yes, Cheapflights offers price alerts on San Francisco to Boston flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

Round-trip from	$394
One-way from	$212
Popular in	June
Cheapest in	January
Average price	$705

Cheap flights from San Francisco to Boston from $212

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 Tuesday or Monday and return on a Thursday

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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 30 June 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 30 June 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 30 June 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 30 June 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 30 June 2025.

Get a feel of what it's like to fly with Alaska Airlines, Southwest, andDelta from San Francisco to Boston by reading reviews from past customers. Users have also rated airlines 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 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.

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

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?

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 30 June 2025.