Cheap flights from San Francisco to Boston
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 Saturday or Thursday and return on a Thursday
Cheap flight deals from San Francisco to Boston
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 16 August 2025.
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 8 August 2025.
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.
What is the cheapest month to book a flight from San Francisco to Boston?
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.
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 16 August 2025.
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.
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 16 August 2025.
The most flights from SFO to BOS are scheduled on a Friday (62 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (15 on average).
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.
Travelling to a place near Boston?
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Alternative routes for San Francisco to Boston
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Fly with Cheapflights
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How does Cheapflights help users find flights from San Francisco to Boston?
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.
Why should you use Cheapflights to find cheap flight tickets from San Francisco to Boston?
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.
Can Cheapflights find flights from San Francisco to Boston with no change fees?
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.
Can Cheapflights notify me if prices for flights from San Francisco to Boston become cheaper?
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.