Cheap Flights from San Francisco (SFO) to Cambridge (CBG)

Popular airlines from San Francisco Intl. Airport (SFO) to Cambridge (CBG)

Alternative airports near Cambridge

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Stansted STN. Cheapest option available. Average driving time to city center is 33 minutes. Flights from $1,873
STN
Stansted
Cheapest
Average driving time to city center33 min
Flights from $1,873
Flights from San Francisco (SFO) to Cambridge (CBG)
Origin airport
San Francisco Intl.
Destination airport
Cambridge
Distance
5335 mi

San Francisco to Cambridge Flights

The cheapest times to fly from San Francisco to Cambridge

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Francisco to Cambridge are during the month of . You can find some of the cheapest flights from San Francisco to Cambridge with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Francisco to Cambridge

Sunday is one of the best days to book for cheap flights from San Francisco to Cambridge: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Francisco to Cambridge

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Francisco to Cambridge in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Francisco to Cambridge flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Francisco to Cambridge airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Cambridge (CBG) cost?
Get a cheap one-way flight or cheap return flight from San Francisco Intl. Airport (SFO) to Cambridge (CBG) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from San Francisco Intl. Airport (SFO) to Cambridge (CBG)?
is the most affordable month to fly from SFO to CBG. Traveling during an off-peak travel window is often the key to finding better deals on flights.
What is the cheapest airline that flies from San Francisco Intl. Airport (SFO) to Cambridge (CBG)?
To find the cheapest airline that'll fly you from SFO to CBG, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from San Francisco Intl. Airport (SFO) to Cambridge (CBG)?
Nonstop flights from San Francisco Intl. Airport (SFO) to Cambridge (CBG) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SFO to CBG?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Francisco Intl. Airport (SFO) to Cambridge (CBG)?
Opt for a flight from San Francisco Intl. Airport (SFO) to Cambridge (CBG) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from San Francisco Intl. Airport (SFO) to Cambridge (CBG) last-minute?
Waiting until just before your departure to book a ticket from SFO to CBG generally means paying more. While you might find some last-minute offers, there's no guarantee. Keep your travel schedule open to boost your chances of getting a bargain.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to Cambridge (CBG)?
If you reserved your SFO to CBG flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

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*Available to One Key members.