$117 Cheap Flights from Boston (BOS) to San Francisco (SFO)

View $117 flight on Sat, Nov 8, 2025Opens in a new window

Popular airlines from Logan International Airport (BOS) to San Francisco Intl. Airport (SFO)

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

Prices were available within the past 7 days and start at $117 for one-way flights and $232 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Tue, Oct 21 - Tue, Oct 21
BOS
Boston
SFO
San Francisco
$232 Roundtrip, found 1 day ago
$232
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Tue, Oct 21 from Boston to San Francisco, returning Tue, Oct 21, priced at $232 found 1 day ago
Bargain Flight
Tue, Oct 7 - Tue, Oct 14
BOS
Boston
SFO
San Francisco
$235 Roundtrip, just found
$235
Roundtrip
just found
Select Bargain Flight flight, departing Tue, Oct 7 from Boston to San Francisco, returning Tue, Oct 14, priced at $235 just found
Hawaiian Airlines
Sat, Sep 6 - Tue, Sep 23
BOS
Boston
SFO
San Francisco
$237 Roundtrip, found 1 day ago
$237
Roundtrip
found 1 day ago
Select Hawaiian Airlines flight, departing Sat, Sep 6 from Boston to San Francisco, returning Tue, Sep 23, priced at $237 found 1 day ago
United
Tue, Oct 7 - Tue, Oct 14
BOS
Boston
SFO
San Francisco
$237 Roundtrip, just found
$237
Roundtrip
just found
Select United flight, departing Tue, Oct 7 from Boston to San Francisco, returning Tue, Oct 14, priced at $237 just found
Delta
Tue, Oct 7 - Tue, Oct 14
BOS
Boston
SFO
San Francisco
$237 Roundtrip, just found
$237
Roundtrip
just found
Select Delta flight, departing Tue, Oct 7 from Boston to San Francisco, returning Tue, Oct 14, priced at $237 just found
JetBlue Airways
Tue, Aug 26 - Wed, Sep 3
BOS
Boston
SFO
San Francisco
$239 Roundtrip, found 2 hours ago
$239
Roundtrip
found 2 hours ago
Select JetBlue Airways flight, departing Tue, Aug 26 from Boston to San Francisco, returning Wed, Sep 3, priced at $239 found 2 hours ago
United
Tue, Oct 7 - Tue, Oct 14
BOS
Boston
SFO
San Francisco
$239 Roundtrip, just found
$239
Roundtrip
just found
Select United flight, departing Tue, Oct 7 from Boston to San Francisco, returning Tue, Oct 14, priced at $239 just found
Alaska Airlines
Tue, Aug 19 - Tue, Aug 26
BOS
Boston
SFO
San Francisco
$240 Roundtrip, found 1 hour ago
$240
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Tue, Aug 19 from Boston to San Francisco, returning Tue, Aug 26, priced at $240 found 1 hour ago
Bargain Flight
Sat, Sep 27 - Mon, Oct 6
BOS
Boston
SFO
San Francisco
$245 Roundtrip, just found
$245
Roundtrip
just found
Select Bargain Flight flight, departing Sat, Sep 27 from Boston to San Francisco, returning Mon, Oct 6, priced at $245 just found
Alaska Airlines
Tue, Oct 14 - Wed, Oct 22
BOS
Boston
SFO
San Francisco
$247 Roundtrip, just found
$247
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Oct 14 from Boston to San Francisco, returning Wed, Oct 22, priced at $247 just found

Find the cheapest month to fly from Boston (BOS) to San Francisco (SFO)

October is typically the cheapest month to fly

From $158 - $286 per traveler.

Graph displaying average flight prices per month

Alternative airports near San Francisco

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

Select flight to Norman Y. Mineta San Jose Intl. SJC. Average driving time to city center is 50 minutes. Flights from $323
SJC
Norman Y. Mineta San Jose Intl.
Average driving time to city center50 min
Flights from $323
Select flight to Oakland Intl. OAK. Average driving time to city center is 26 minutes. Flights from $397
OAK
Oakland Intl.
Average driving time to city center26 min
Flights from $397
Flights from Boston (BOS) to San Francisco (SFO)
Origin airport
Logan Intl.
Destination airport
San Francisco Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$231
Distance
2697 mi
Average flight time
3 hours 35 mins

Boston to San Francisco Flights

The cheapest times to fly from Boston to San Francisco

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 Boston to San Francisco are during the month of October. You can find some of the cheapest flights from Boston to San Francisco with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Boston to San Francisco: 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 Boston to San Francisco

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 Boston to San Francisco in 2025. You can also book with separate airlines for your outbound and return journeys, from $117 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 Boston to San Francisco 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 Boston to San Francisco 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 Logan Intl. Airport (BOS) to San Francisco Intl. Airport (SFO) cost?
You can find cheap return tickets from Logan Intl. Airport (BOS) to San Francisco Intl. Airport (SFO) starting from $232. Book your seat and start your adventure. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a JetBlue Airways flight leaving BOS on July 22 2025 and touching down at SFO. The price was last updated on July 3 2025 and has not changed since.
What is the cheapest month to fly from BOS to SFO?
The cheapest flights from BOS to SFO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Logan Intl. Airport (BOS) to San Francisco Intl. Airport (SFO)?
Avoid the detours and travel nonstop to San Francisco Intl. Airport (SFO) from Logan Intl. Airport (BOS) with 3 airlines, including:

  • United Airlines
  • JetBlue Airways
  • Delta Air Lines

What is the cheapest airline that flies from BOS to SFO?
With tickets starting at $116 for a one-way flight from BOS to SFO, JetBlue Airways is currently the cheapest airline flying this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from BOS on September 24 2025. Prices were last updated on July 3 2025 and have not changed since.
How many flights per day from Logan Intl. Airport (BOS) to San Francisco Intl. Airport (SFO)?
Every day on average, 8 nonstop flights operate from Logan Intl. Airport (BOS) to San Francisco Intl. Airport (SFO). Choose the departure that best fits your schedule.
What are the most popular departure times for flights from Logan Intl. Airport (BOS) to San Francisco Intl. Airport (SFO)?
The 5 PM departures from BOS to SFO are the most sought after. These flights can come with a higher price due to their popularity. If you want to save on your fare, book during off-peak hours.
What day of the week has the most flights from BOS to SFO?
Jet off on a Friday if you're after the largest selection of flights from Logan Intl. Airport (BOS) to San Francisco Intl. Airport (SFO).
What is the earliest flight from Logan Intl. Airport (BOS) to San Francisco Intl. Airport (SFO)?
The first flight of the day out of Logan Intl. Airport (BOS) is at around 6:00AM UTC-5. Hop on this flight and you'll arrive at San Francisco Intl. Airport (SFO) at approximately 9:55AM UTC-8. The overall travel time is 6h 55m.
How long does it take to fly from Logan Intl. Airport (BOS) to San Francisco Intl. Airport (SFO)?
Flights from BOS to SFO have an average travel time of 6 hours and 53 minutes. The total distance between the two is 2,700 mi.
What is the best time to fly from Logan Intl. Airport (BOS) to San Francisco Intl. Airport (SFO)?
To land at San Francisco Intl. Airport (SFO) on schedule, opt for a flight that leaves from Logan Intl. Airport (BOS) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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.
What airports do you fly into for San Francisco from Logan Intl. Airport (BOS)?
San Francisco Intl. Airport (SFO) is the only airport in San Francisco with direct flights from Logan Intl. Airport (BOS). Browse the options and find cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Logan Intl. Airport (BOS) to San Francisco Intl. Airport (SFO) last-minute?
Holding off until right before your break to book a flight from BOS to SFO generally means paying more. While you may come across some last-minute deals, they aren't always guaranteed. Be flexible with your travel plans for the best chance of snagging a bargain.
Is it cheaper to book a BOS to SFO flight and hotel package?
You can save money by booking a BOS to SFO flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After selecting your preferred flights and accommodations, consider adding extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from Logan Intl. Airport (BOS) to San Francisco Intl. Airport (SFO)?
Typically, it's possible to cancel or reschedule your BOS to SFO flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.