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Find cheap flights from Boston to San Francisco from $145

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to San Francisco departing on 8/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
Thu 18/4
Thu 25/4

Search hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to San Francisco, as well as popular online travel agencies
In the last 7 days, travellers have searched 47,600,107 times on KAYAK, and here's why:

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Cheap flight deals from Boston to San Francisco

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
17:10 - 21:05BOS-SFO
6h 55mdirect
07:00 - 15:45SFO-BOS
5h 45mdirect
$303Delta
Find Deal
Tue, 7 May - Sat, 11 May
07:50 - 11:48BOS-SFO
6h 58mdirect
07:00 - 15:45SFO-BOS
5h 45mdirect
$315Delta
Find Deal
Tue, 30 Apr - Wed, 8 May
21:10 - 00:36BOS-SFO
6h 26mdirect
14:00 - 22:49SFO-BOS
5h 49mdirect
$329JetBlue
Find Deal
Sun, 28 Apr - Tue, 7 May
07:50 - 11:48BOS-SFO
6h 58mdirect
07:00 - 15:45SFO-BOS
5h 45mdirect
$331Delta
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Sat, 27 Apr - Tue, 7 May
16:36 - 23:28BOS-SFO
9h 52m1 stop
07:40 - 16:22SFO-BOS
5h 42mdirect
$343Alaska Airlines
Find Deal
Tue, 7 May - Sat, 11 May
06:00 - 09:30BOS-SFO
6h 30mdirect
06:00 - 14:48SFO-BOS
5h 48mdirect
$346JetBlue
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Wed, 3 Apr - Wed, 10 Apr
16:36 - 22:22BOS-SFO
8h 46m1 stop
07:40 - 16:22SFO-BOS
5h 42mdirect
$370Alaska Airlines
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Tue, 30 Apr - Wed, 8 May
06:00 - 09:31BOS-SFO
6h 31mdirect
23:30 - 10:56SFO-BOS
8h 26m1 stop
$481United Airlines
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Wed, 21 Aug - Mon, 26 Aug
08:05 - 15:10BOS-SFO
10h 05m1 stop
11:50 - 23:40SFO-BOS
8h 50m1 stop
$506Southwest
Find Deal
Tue, 7 May - Thu, 9 May
06:00 - 09:31BOS-SFO
6h 31mdirect
23:59 - 12:33SFO-BOS
9h 34m1 stop
$509United Airlines
Find Deal
Thu, 29 Aug - Tue, 3 Sep

Flights from Boston to San Francisco - Travel Insights & Trends

Get data-powered insights and trends into flights from Boston to San Francisco to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Boston to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Boston to San Francisco is January, where tickets cost $422 on average. On the other hand, the most expensive months are June and December, where the average cost of tickets is $713 and $698 respectively.

How far in advance should I book a flight from Boston to San Francisco?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Boston to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Boston to San Francisco, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 50 days before departure.

Which airlines provide the cheapest flights from Boston to San Francisco?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, JetBlue offered the best one-way deal for that route, at $145. KAYAK users also found Boston to San Francisco return flights on Delta from $303 and on JetBlue from $329.

Which airlines fly most frequently between Boston and San Francisco?

United Airlines connects Boston to San Francisco up to 6 flights per day, followed by JetBlue (4 flights per day), and Alaska Airlines (2 flights per day).

How many flights are there between Boston and San Francisco per day?

Each day, there are between 14 and 16 nonstop flights that take off from Boston and land in San Francisco, with an average flight time of 6h 52m. The most common departure time is 07:00 and most flights take off in the morning. Each week, there are 106 flights. The most frequent day of departure is Friday, when 15% of all weekly flights depart. The fewest flights depart on a Sunday.

Which cabin class options are there for flights between Boston and San Francisco?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 3 cabin class options for the route. These are First, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Boston to San Francisco take?

The duration of a direct flight to San Francisco from Boston is typically 6h 21m. The journey crosses a distance of 6,981 km.

What’s the earliest departure time from Boston to San Francisco?

Early birds can take the earliest flight from Boston at 05:10 and will be landing in San Francisco at 09:02.

What’s the latest departure time from Boston to San Francisco?

If you prefer to fly at night, the latest flight from Boston to San Francisco jets off at 21:34 and lands at 00:55.

Good to know

Low season

January

High season

December

Cheapest flight

$145
Best time to beat the crowds (28% less expensive on average)
Most popular time to fly (20% more expensive on average)
Flight from Boston to San Francisco

When to book flights from Boston to San Francisco

Are your dates flexible? Find out the best times to travel from Boston to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to San Francisco

  • If my pet travels with me on my trip from Boston to San Francisco where will I be able to pick it up upon arrival?

    At San Francisco Airport, pets that are traveling in the baggage compartment will be delivered at the baggage claim area. If you instead brought your pet using your airline’s cargo service, you must contact your airline directly. Each airline has its own off-site cargo office location where you can retrieve your pet after your flight.

  • If I am being picked up at San Francisco Airport, where is the best place for my ride to meet me?

    The airport offers a free cell phone lot that is located near the long-term parking lot. Drivers are advised to park there until your flight arrives, since there is no parking of any kind at the terminal building. The maximum waiting time allowed in the cell phone lot is sixty minutes.

  • Is there a post office at San Francisco Airport?

    There is a full United States Postal Branch at the airport just north of the airport, and there are mailboxes located outside each of the terminal buildings. If you are simply in need of stamps, there are stamp machines located on the Departures level of all of the terminal buildings.

  • Where can I get an Uber at San Francisco International Airport?

    Upon arrival at San Francisco International, you should collect all of your bags and then request your ride. Once you have requested your ride you may meet Uber Pool and Express Pool rides on level 5 of the domestic garage and all other rides, such as Uber Black and SUV, can be met at the departures level located on the second floor of the domestic terminal.

  • What is the cheapest flight from Boston to San Francisco?

    In the last 3 days, the lowest price for a flight from Boston to San Francisco was $95 for a one-way ticket and $199 for a return.

  • Which airports will I be using when flying from Boston to San Francisco?

    Boston and San Francisco are both served by 1 main airport. You will leave Boston from Boston Logan Intl and will be arriving at San Francisco.

  • Which airlines offer Wi-Fi service onboard planes from Boston to San Francisco?

    All the following airlines offer inflight Wi-Fi service on the Boston to San Francisco flight route: JetBlue, Alaska Airlines, Delta, American Airlines, Hawaiian Airlines, and Cathay Pacific.

  • Which aircraft models fly most regularly from Boston to San Francisco?

    The Airbus A318/A319/A320/A321 is the aircraft model that flies most regularly on the Boston to San Francisco flight route.

  • Which airline alliances offer flights from Boston to San Francisco?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Boston and San Francisco, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Boston to San Francisco?

    There are direct flights from Boston to San Francisco on a daily basis.

  • How does KAYAK find such low prices on flights from Boston to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to San Francisco with an airline and back to Boston with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from Boston to San Francisco

  • Looking for a cheap flight? 25% of our users found flights on this route for $593 or less round-trip.
  • After long flights from Boston to San Francisco, you are most likely looking to rest and recuperate. That is where the Best Western Plus Grosvenor Airport Hotel can help. This hotel is located just 1.5 miles from the airport and is the perfect hotel for those traveling for both business and pleasure.
  • If you feel like you need of a bit of a pick-me-up after your long flight from Boston to San Francisco, stop by Freshen Up. This unique airport concept is located in the main hall of San Francisco International Airport near the entrance to gates G91-G102. Freshen Up offers shower facilities, toiletries, ironing facilities, and undergarments, all designed to get you feeling like yourself again after your long flight.
  • If you are craving a cold beer before your flight from Boston to San Francisco, then why not stop by the Boston Beer Works? Located in Terminal C near Gate C-14 at Boston Logan International Airport, this restaurant offers soups and salads as well as a variety of wraps and plates and, of course, a wide selection of craft beers.
  • When looking for something completely unique to commemorate your time in Boston, stop by New England Collections located in Terminal A near Gate A-7 at Boston Logan International Airport. This specialty shop carries a whole host of gifts, clothing, and novelties that highlight the unique New England lifestyle.
  • Sports fans with some time on their hands before flights from Boston to San Francisco should make it a point to stop in at Game On located in Terminal A near Gate A15 in Boston Logan International Airport. This unique concept is part restaurant, part sports bar, and part game room.
See more tips

Prefer to fly direct from Boston Logan Intl to San Francisco?

Find which airlines fly direct from Logan Intl to San Francisco, which days they fly and book direct flights.

Direct departures

Boston Logan Intl to San Francisco

Monday

ANA, Air New Zealand, Alaska Airlines, +18 more

ANA, Air New Zealand, +19 more

Tuesday

ANA, Air New Zealand, Alaska Airlines, +18 more

ANA, Air New Zealand, +19 more

Wednesday

ANA, Air China, Air New Zealand, +19 more

ANA, Air China, +20 more

Thursday

ANA, Air New Zealand, Alaska Airlines, +18 more

ANA, Air New Zealand, +19 more

Friday

ANA, Air New Zealand, Alaska Airlines, +18 more

ANA, Air New Zealand, +19 more

Saturday

ANA, Air China, Air New Zealand, +18 more

ANA, Air China, +19 more

Sunday

ANA, Air New Zealand, Alaska Airlines, +19 more

ANA, Air New Zealand, +20 more

See more direct flights

Direct returns

San Francisco to Boston Logan Intl

Monday

ANA, Air New Zealand, Alaska Airlines, +18 more

ANA, Air New Zealand, +19 more

Tuesday

ANA, Air New Zealand, Alaska Airlines, +19 more

ANA, Air New Zealand, +20 more

Wednesday

ANA, Air China, Air New Zealand, +17 more

ANA, Air China, +18 more

Thursday

ANA, Air New Zealand, Alaska Airlines, +18 more

ANA, Air New Zealand, +19 more

Friday

ANA, Air New Zealand, Alaska Airlines, +18 more

ANA, Air New Zealand, +19 more

Saturday

ANA, Air China, Air New Zealand, +18 more

ANA, Air China, +19 more

Sunday

ANA, Air New Zealand, Alaska Airlines, +20 more

ANA, Air New Zealand, +21 more

See more direct flights
See more direct flights

Book cheap flights from Boston to San Francisco

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Boston to San Francisco found on KAYAK in the last 72 hours.
8/5Wed
directJetBlue
6h 26mBOS-SFO
$145
28/8Wed
directDelta
6h 59mBOS-SFO
$152
8/5Wed
1 stopAlaska Airlines
8h 46mBOS-SFO
$158
23/4Tue
directJetBlue
6h 26mBOS-SFO
$172
10/6Mon
directDelta
6h 55mBOS-SFO
$180
15/5Wed
1 stopAlaska Airlines
9h 40mBOS-SFO
$235
7/9Sat
2 stopsUnited Airlines
13h 31mBOS-SFO
$270
23/7Tue
1 stopSun Country Air
8h 26mBOS-SFO
$279
3/6Mon
1 stopSun Country Air
31h 09mBOS-SFO
$302
7/9Sat
3 stopsUnited Airlines
14h 53mBOS-SFO
$364

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Last minute flights from Boston to San Francisco

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Boston to San Francisco that are departing in the next 10 days.
23/3Sat
directAlaska Airlines
6h 54mBOS-SFO
27/3Wed
directAlaska Airlines
5h 40mSFO-BOS
$582
22/3Fri
directJetBlue
6h 41mBOS-SFO
26/3Tue
directJetBlue
5h 39mSFO-BOS
$625
23/3Sat
directJetBlue
6h 52mBOS-SFO
3/4Wed
directJetBlue
5h 48mSFO-BOS
$635
19/3Tue
multi-stopAlaska Airlines
9h 07mBOS-SFO
26/3Tue
directAlaska Airlines
5h 40mSFO-BOS
$638
23/3Sat
directAlaska Airlines
6h 54mBOS-SFO
7/4Sun
directAlaska Airlines
5h 49mSFO-BOS
$640
21/3Thu
directDelta
7h 12mBOS-SFO
4/4Thu
directDelta
5h 35mSFO-BOS
$701
19/3Tue
multi-stopSouthwest
8h 15mBOS-SFO
21/3Thu
multi-stopSouthwest
9h 50mSFO-BOS
$760
23/3Sat
directDelta
7h 12mBOS-SFO
28/3Thu
multi-stopDelta
9h 10mSFO-BOS
$783
19/3Tue
directUnited Airlines
6h 51mBOS-SFO
25/3Mon
directUnited Airlines
5h 40mSFO-BOS
$823
19/3Tue
directUnited Airlines
6h 49mBOS-SFO
21/3Thu
directUnited Airlines
5h 40mSFO-BOS
$1,019

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Boston - San Francisco Flights

Departure:

Boston (BOS)United States

Destination:

San Francisco (SFO)United States

Return flight deals:

San Francisco - Boston

Cabin classes:

$363

Browse origins:

  • Flights » 
  • Boston

Browse destinations:

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  • Worldwide » 
  • San Francisco