Cheap flights from Boston to San Francisco (BOS - SFO)

Flight FAQs

From Boston to San Francisco

Are flight prices decreasing from Boston to San Francisco due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Boston and San Francisco for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Boston Logan Intl to San Francisco to control the spread of COVID-19?

New policies can now be found on Alaska Airlines and Delta to help keep travelers safe while flying. New policies for travelers booking flights from Boston Logan Intl to San Francisco include masks being provided and required on board, daily cleaning and sanitization, use of HEPA filters, pre-flight testing for antibodies and symptoms, and socially distanced seating (for a limited time). Keep in mind that policies will vary by airline.

Which airlines flying from Boston Logan Intl to San Francisco have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like United Airlines, JetBlue, and Delta flying from Boston Logan Intl to San Francisco have implemented new flexible cancellation policies.

Can I find flights from Boston to San Francisco for under $200 on Cheapflights?

Yes, there are multiple flights from Boston to San Francisco for under $200. The cheapest flight booked recently is on Multiple Airlines for just $154, but on average you can expect to pay $171.

Are there nonstop flights from Boston to San Francisco for under $300 on Cheapflights?

Cheapflights has at least 20 direct flights from Boston to San Francisco under $300. A good price for a nonstop flight from Boston to San Francisco is less than $274.

Are there last-minute flights available from Boston to San Francisco for under $200?

There are currently 20+ open flights from Boston to San Francisco within the next 7 days for less than $200.

How popular is this flight route?

Flights from Boston Logan Intl to San Francisco have been viewed 318 times in the past calendar month.

Does it rain more in Boston or San Francisco?

Expected rainfall in Boston is more than in San Francisco. You can expect this to be the case over the next 16 days.

Is Boston weather warmer or cooler than San Francisco?

Temperatures around the 84 °F's can be experienced in July. The weather in San Francisco is colder than in Boston. Plan for potential changes in flight availability as peak weather approaches in this location.

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

Currently priced at $184, Frontier will fly you from Boston to San Francisco and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Frontier is 39% cheaper than the average price of flights available within the next 90 days to this destination.

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

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $75.