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Cheap Flight Deals from San Francisco to Boston

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Round TripOne Way
SFO San Francisco
BOS Boston
From $180.78
Jan 21, 2026 - Jan 24, 2026
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OAK Oakland
BOS Boston
From $305.64
Feb 17, 2026 - Feb 24, 2026
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*All fares above were last found on:
Fares are one way/round trip. Fares incl. all fuel surcharges, taxes & fees and our service fees. Displayed fares are subject to change and cannot be guaranteed at the time of booking. See all booking terms and conditions.

When’s a good time to book a flight from San Francisco to Boston?

What’s the cheapest day of the week to fly from San Francisco to Boston?‡

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

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‡This information is based on historical data from the last 365 days.

Finding Affordable Flights from San Francisco to Boston
  • Plan Ahead - One of the keys to securing cheap flights from San Francisco to Boston is to plan your trip well in advance. Airlines often offer lower prices for those who book tickets months ahead. Keep an eye on special promotions and sales events, which can yield significant savings.
  • Flexibility is Key - Being flexible with your travel dates can also lead to substantial cost savings. Consider flying during off-peak seasons or on weekdays when prices tend to be lower.
  • Set Price Alerts - To keep tabs on flight prices, consider setting up fare alerts. These alerts will notify you when fares from San Francisco to Boston drop, giving you the opportunity to grab cheap deals.
  • Consider Nearby Airports - If Boston has multiple airports, check the prices at each one. Sometimes, flying into a nearby airport and then taking a short train or bus ride to your destination can be a much cheaper option.
  • Bundle and Save - Booking your flight and accommodation together as a package can often result in significant savings. CheapOair offers these bundled deals, so make sure to explore this option.

When is the Cheapest Time to Book Flights from San Francisco to Boston?

‡

Got flexible travel dates? Use our flight data from the past year to discover ideal times to fly from San Francisco to Boston. Find out which months and days typically offer lower fares and score our best savings.

CheapOair provides the predicted prices for one-way trips or round-trips with a duration of 7 days for domestic and 14 days for international trips based on historical data and available flight information. Graphs are estimates only. Prices are subject to change and can't be guaranteed until ticketed.
Estimated price for
Round-trip

‡Graphs are estimates only. Based on historical data and available flight information. Prices are subject to change and cannot be guaranteed until ticketed.

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San Francisco to Boston Flight Route Information

Travel Distance:2,700 Miles
Airlines Flying This Route: United Airlines, JetBlue Airways, Alaska Airlines
Weekly Flights:41
Avg. Flight Duration:5.41 Hours

Insights About Flying from San Francisco to Boston

Q. Which is the high season to travel from San Francisco to Boston?

A. The month of August is considered the high season for flying from SFO to BOS. Traveling during the high season can affect ticket prices and availability, making this data crucial for trip planning.

Q. How many direct flights are available from SFO to BOS?

A. There are a total of 167 direct flights from San Francisco to Boston. For travelers seeking convenience and shorter travel times, this data is important when choosing flight options.

Q. Which is the low season to travel from San Francisco to Boston?

A. April is considered the low season for traveling from San Francisco to Boston, Massachusetts. Travelers looking for cost-effective options and fewer crowds may consider traveling during this period.

Q. How many daily flights are there between San Francisco to Boston?

A. There are as many as 5 daily flights available for travelers between SFO to BOS. This data offers flexibility in choosing departure times that best suit your schedule.

Q. Which is the busiest day for passengers flying between San Francisco to Boston?

A. Monday are the busiest days for passengers flying between San Francisco to Boston. Knowing the peak travel day can help you plan your trip to avoid overcrowded flights or airports.

Q. At what time does the last flight depart to Boston?

A. The last flight to Boston typically departs between 11:00PM - 12:00AM. Travelers who prefer late-night departures will find this information valuable for planning their journey.

Q. What percentage of travelers spent an average of 3 days in Boston, Massachusetts?

A. Approximately 34.72% of travelers spent an average of 3 days exploring Boston. This information can assist in planning the duration of your stay in Boston

Q. What percentage of SFO to BOS flyers traveled with kids under 14?

A. About 4% of passengers on flights from San Francisco to Boston were accompanied by children under the age of 14. This information is useful if you're planning a family trip and want to know how common it is to travel with young children on this route.

Q. What percentage of San Francisco to Boston travelers were over 60 years old?

A. A notable 20% of travelers were aged 60 or older. This statistic provides insights for senior travelers or those seeking a mature travel demographic.

Q. What percentage of SFO to BOS travelers were millennials?

A. Millennials make up a significant portion of travelers on this route, accounting for 35% of all passengers. If you're a millennial looking to connect with like-minded travelers, this statistic might interest you.

Q. What percentage of San Francisco to Boston travelers were female?

A. Almost half of the passengers, approximately 53% were female. Knowing the gender distribution can be useful for solo female travelers or those interested in gender-related travel insights.

Q. What percent of San Francisco to Boston travellers booked first or business class?

A. 7% of travelers booked first or business class on this route.

Q. At what time the earliest flight departs from San Francisco?

A. The earliest flight departs at 6:00AM - 7:00AM.

Q. On which days one can have the most flight options in Boston?

A. Monday offer the most flight options in Boston.

§ All flight facts are based on last 3 months' data except the highest and lowest booking months that are based on last 3 months' data.

Cheap Flights from San Francisco to Boston

Looking for flights from San Francisco to Boston? Look no more, for you're at the right place. Book cheap flights from San Francisco to Boston on CheapOair and enjoy great discounts. Whether its leisure or a business trip, we offer the most competitive rates on flight tickets to destinations around the world. Grab SFO to BOS flight deals on CheapOair and save big!

Airports in San Francisco

The US city of San Francisco in California is primarily served by San Francisco International Airport. The airport also serves San Francisco Bay Area and is a major gateway to Europe and Asia. Located 13 miles away from downtown San Francisco, this airport is the largest in Northern California and the second-busiest in California. San Francisco International Airport is well-connected to all parts of the city through a superb transportation network comprising a rail network (BART and Caltrain), buses operated by nearby San Mateo County (called SamTrans), shared ride, vans, hotel courtesy shuttles, and taxis.

Explore Boston

The capital city of the Commonwealth of Massachusetts, Boston is also the most populous city in the New England region of the northeastern United States. One of the oldest cities in the United States, Boston is home to a plethora of historic places making it an excellent city to visit for history buffs. One can enjoy a walk-through well-off history on the Freedom Trail. Besides the historic attractions, key tourist attractions in the city comprise top seafood restaurants, historic neighborhoods, world-class museums, and picturesque waterfront.

Things to do in Boston

New England Aquarium

New England Aquarium treats history buffs with around 20,000 fish and aquatic animals representing more than 550 species. In the center, there is an artificial Caribbean coral reef featuring a large diversity of tropical fish and underwater life such as turtles, sharks, and moral eels.

Boston Museum of Fine Arts

One of the leading art museums in the US, Boston Museum of Fine Arts is home to a collection of Impressionist paintings, Asian and Persian fine arts, ancient Egyptian treasures, and interesting works from ancient Greece and the Middle East. It is an apt place to visit for art lovers.

Isabella Stewart Gardner Museum

A great place to visit for art and history lovers, Isabella Stewart Gardner Museum is home to assortments including paintings, furniture, sculpture, decorative arts, tapestries, manuscripts, and books displaying the personal taste and expertise of Isabella Stewart Gardner, the creator of the museum. The building is also home to a long green space where there is a beautiful rose garden.

Best Time to Visit Boston

Boston experiences humid mainland climate with warm summers and winters with chilly rain and snow. The best time to visit Boston is between June and October as it is the season of gentle fall climate.

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