SFO - BOS

$154 Find Cheap Flights from San Francisco to Boston - Compare and Save

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Everything you should know

Cheapest round-trip
$288
Typical prices: $343-$578
Frontier, JetBlue
Sat 9/22Sat 10/6
SFO - BOS • 1 stop
Cheapest non-stop
$307
Typical prices: $345-$581
JetBlue
Wed 9/12Wed 9/19
SFO - BOS • Non-stop
Nonstop flights
You can fly direct with United Airlines, JetBlue and Delta. Average duration is 5h 48m
Direct flights
+1
Direct flights
+1
Avoid delays
Most punctual • 86% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 33% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 24% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $174 (round-trip)
Shortest trip • 8h 24m (one-way)
Insights
Insights
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We hope you love your trip to Boston!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Francisco to Boston

Tue, Sep 22 - Tue, Oct 6
Multiple Airlines Logo
10:05 pm - 12:09 pmSFO  San Francisco-BOS Boston Logan Intl
11h 04m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
6:50 am - 10:13 amBOS  Boston Logan Intl-SFO San Francisco
6h 23mnonstop
$288Multiple Airlines
Tue, Sep 22 - Tue, Sep 29
Multiple Airlines Logo
10:05 pm - 12:09 pmSFO  San Francisco-BOS Boston Logan Intl
11h 04m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
9:30 pm - 12:56 amBOS  Boston Logan Intl-SFO San Francisco
6h 26mnonstop
$290Multiple Airlines
Wed, Sep 23 - Wed, Sep 30
Frontier Logo
3:15 pm - 10:22 amSFO  San Francisco-BOS Boston Logan Intl
16h 07m2 stops Las Vegas Harry Reid Intl Orlando
Frontier Logo
12:54 pm - 8:08 pmBOS  Boston Logan Intl-SFO San Francisco
10h 14m1 stop Atlanta Hartsfield-Jackson
$292Frontier
Thu, Sep 10 - Sat, Sep 12
Frontier Logo
10:05 pm - 12:09 pmSFO  San Francisco-BOS Boston Logan Intl
11h 04m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
12:54 pm - 7:48 pmBOS  Boston Logan Intl-SFO San Francisco
9h 54m1 stop Atlanta Hartsfield-Jackson
$295Frontier
Sat, Sep 12 - Sat, Sep 19
JetBlue Logo
2:00 pm - 11:19 pmSFO  San Francisco-BOS Boston Logan Intl
6h 19mnonstop
JetBlue Logo
9:30 pm - 12:56 amBOS  Boston Logan Intl-SFO San Francisco
6h 26mnonstop
$307JetBlue
Tue, Sep 15 - Tue, Sep 22
JetBlue Logo
7:50 am - 4:34 pmSFO  San Francisco-BOS Boston Logan Intl
5h 44mnonstop
JetBlue Logo
9:30 pm - 12:56 amBOS  Boston Logan Intl-SFO San Francisco
6h 26mnonstop
$308JetBlue
Wed, Sep 23 - Wed, Oct 7
United Airlines Logo
2:07 pm - 10:59 pmSFO  San Francisco-BOS Boston Logan Intl
5h 52mnonstop
United Airlines Logo
7:45 am - 11:15 amBOS  Boston Logan Intl-SFO San Francisco
6h 30mnonstop
$317United Airlines
Wed, Oct 28 - Tue, Nov 3
United Airlines Logo
10:40 am - 7:19 pmSFO  San Francisco-BOS Boston Logan Intl
5h 39mnonstop
United Airlines Logo
1:51 pm - 5:40 pmBOS  Boston Logan Intl-SFO San Francisco
6h 49mnonstop
$317United Airlines
Wed, Sep 9 - Sat, Sep 19
Delta Logo
12:20 pm - 9:08 pmSFO  San Francisco-BOS Boston Logan Intl
5h 48mnonstop
Delta Logo
7:35 am - 11:04 amBOS  Boston Logan Intl-SFO San Francisco
6h 29mnonstop
$317Delta
Sat, Sep 12 - Sat, Sep 19
Delta Logo
12:20 pm - 9:08 pmSFO  San Francisco-BOS Boston Logan Intl
5h 48mnonstop
Delta Logo
7:35 am - 11:04 amBOS  Boston Logan Intl-SFO San Francisco
6h 29mnonstop
$317Delta
Booking Insights

Price, demand and travel trends for San Francisco to Boston flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights from San Francisco to Boston with more confidence.

What's the cheapest day of the week to fly from San Francisco to Boston?

Wednesday is the cheapest day of the week to fly from San Francisco to Boston, it is 11% cheaper than the average day. Sunday is the most expensive day with flight prices 9% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • January is the cheapest month to fly from San Francisco to Boston at $337 round-trip.
  • June ($506) and December ($501) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 50% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from San Francisco to Boston the cheapest?

Flights from San Francisco to Boston are cheapest 4 weeks before departure. Booking in this window typically costs about 33% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from San Francisco to Boston

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on JetBlue and Alaska Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and Delta

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Blane Bachelor

Blane Bachelor

Expert on BOS and SFO

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Key details for San Francisco to Boston flights

Low season

February

Cheapest flight

$154
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 15% increase in price.
Flight from San Francisco to Boston

When to book flights from San Francisco to Boston

Are your dates flexible? Find out the best times to travel from San Francisco to Boston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your San Francisco to Boston flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • What are some good hotels near Logan International Airport?

    The Embassy Suites by Hilton is a solid choice that is only a 5-minute drive from Logan International Airport and a 15-minute drive from the popular Museum of Fine Arts. The Westin Boston Waterfront is a 4-star choice that is a 10-minute drive from the airport and a 5-minute walk from the waterfront.

  • Does Logan International Airport have pet relief areas?

    If you are traveling with a pet or service animal, make sure to let them relieve themselves after you have arrived at Logan International Airport. There is a pet relief area conveniently located outside of every Arrivals terminal, and travelers can get complimentary waste bags at each location.

  • What are some good dining options in San Jose Mineta International Airport?

    If you would like to grab a bite to eat before your flight takes off, make sure to browse through the different dining options at San Jose Mineta International Airport. Flames Eatery and Bar is a casual restaurant that is located in Terminal B and serves American-style meals, while Gordon Biersch Brewing Company is known for having an impressive craft beer selection. Jamba Juice and Peet’s Coffee and Tea are both convenient choices for travelers short on time that would like to purchase to-go items.

  • Does Logan International Airport have a prayer room?

    Logan International Airport is home to the Our Lady of the Airways Chapel that is located between Terminals B and C and is open to all travelers. The Chapel hosts Mass on Sundays and can be used for individual prayer when a ceremony is not occurring.

  • Where can I relax at SFO?

    Consider buying a lounge ticket to access either the Air France-KLM lounge in the International Terminal’s Concourse A or the Centurion Lounge hosted in Terminal 3’s Gate 74. You may also pay at the entrance to enjoy their services such as books, magazines, and drinks. SFO has also set aside a USO lounge housed in Terminal 1’s Mezzanine Level for active US military members plus their families. It offers refreshments, showers, and toys.

  • Are pets welcome at San Francisco Airport (SFO)?

    If you are towing with your four-legged friend, you will be happy to hear that San Francisco Airport is home to hygienic pet relief spaces in Terminal 1C, close to Gate C5-C7, and in Terminal 3 Courtyard 4, close to Gate F11. However, the airport has put in place some pet policies that require you to confine your pet in its kennel except while going through screenings for security and potty breaks.

  • Does BOS offer any accessible services?

    Yes. The shuttle buses at BOS are lift-equipped and have an audio and video stop announcement system. In addition to terminals and garages with elevators, all terminals have curb ramps on all levels as well as accessible restrooms with adult-changing tables.

  • What family services are offered at Logan International Airport (BOS)?

    BOS is a family-oriented airport with child-friendly amenities. Let your kids blow off some steam after your flight from San Francisco at the Kidport play areas in Terminal A’s Gate 18, Terminal B’s Gates B30-B36, and Terminal C’s Gate 25. These spaces are equipped with slides, climbing structures, airfield mimics, and a Boston Logan tower child-sized replica. If you are traveling with toddlers, changing rooms with changing tables are found in all restrooms in the airport.

  • Which airlines offer extra legroom and free seat selection on San Francisco to Boston flights?

    Among airlines operating San Francisco to Boston flights:

    • JetBlue: offers extra legroom; offers free seat selection
    • United Airlines: offers extra legroom; offers free seat selection
    • Delta: offers extra legroom; offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • What airlines are available from San Francisco to Boston?

    3 airlines operate flights between San Francisco and Boston. The airlines offering nonstop flights on this route include:
    • United Airlines
    • JetBlue
    • Delta

  • Which airports can I use when flying from San Francisco to Boston?

    Flights from San Francisco to Boston usually depart from San Francisco (SFO) and arrive at Boston Logan Intl (BOS).

  • Which airlines include bags at no extra cost on San Francisco to Boston flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • JetBlue: a cabin bag and a checked bag in Economy Class
    • United Airlines: a cabin bag and a checked bag in Economy Class
    • Delta: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

  • What cabin classes can I book on flights from San Francisco to Boston?

    Four cabin classes are available on flights from San Francisco to Boston:

    • Economy Class
    • Premium Economy Class
    • Business Class
    • First Class

    Prices vary by airline.

  • How much can I save by taking a layover when flying from San Francisco to Boston?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $174 round-trip via Baltimore/Washington (BWI), compared to $445 for nonstop.

  • What is the standard checked-bag allowance on flights from San Francisco to Boston?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $35–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from San Francisco to Boston?

    The Airbus A318/A319/A320/A321 family is used most often on this route, operated mainly by JetBlue. Other aircraft seen on the route include Airbus A321neo variants.

  • Which airports do connecting flights from San Francisco to Boston pass through?

    One-stop flights from San Francisco to Boston most commonly connect through:

    • Philadelphia (PHL) - 26% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 19% of one-stop connections
    • San Diego (SAN) - 10% of one-stop connections
    • Denver Intl (DEN) - 7% of one-stop connections

    Philadelphia (PHL) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from San Francisco to Boston?

    Yes. Being flexible with your travel dates can save you up to 19% on the San Francisco to Boston route. Wednesday is the cheapest departure day at $395 round-trip on average, while Sunday is the most expensive at $484, a difference of $89. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • At what point is a flight considered delayed from San Francisco to Boston?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the San Francisco to Boston route, 18% of flights were delayed in the past 3 months, with delays averaging 2 hours 50 minutes.

  • How are flight departures from San Francisco to Boston spread across the day?

    Morning is the busiest departure period on San Francisco to Boston flights, with 65% of flights leaving in that window. Night departures account for 21%, afternoon flights for 7%, and evening flights for 7%.

  • What popular places can I visit in Boston?

    Some of the most popular sights in Boston are Fenway Park, TD Garden and South Station. These are among the most viewed places in Boston on KAYAK.

  • How long is a flight from San Francisco to Boston?

    A nonstop flight from San Francisco to Boston takes 5h 48m, covering 2,696 miles.

  • What are the earliest and latest flights from San Francisco to Boston?

    These are the earliest and latest flight times available from San Francisco to Boston:

    • Earliest: departs at 6:00 am and lands at 11:48 am
    • Latest: departs at 11:59 pm and lands at 5:47 am.

    The flight takes about 5h 48m.

  • How expensive are last-minute San Francisco to Boston flights?

    Last-minute fares on this route - booked within 2 weeks of departure - run 33% above the route average of $442. Book 4 weeks before departure for the lowest fares.

  • Do I need a passport to fly from San Francisco to Boston?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from San Francisco to Boston changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $288 to $2,494. That means the highest observed fare was about 9x higher than the lowest one.

  • How are flight prices from San Francisco to Boston looking right now?

    One-way fares from San Francisco to Boston are currently lower than usual. Average one-way flight prices are about $158, which is 43% below the typical average for this route.

  • How does Alaska Airlines’s on-time performance compare to other airlines on San Francisco to Boston flights?

    Alaska Airlines is slightly above the route average for timely arrivals, while Delta has a lower on-time arrival rate. On-time arrival rates on San Francisco to Boston flights are:

    • Alaska Airlines: 86% on time
    • Delta: 83% on time
    • United Airlines: 83% on time

    Overall, flights on this route are on time 82% of the time on average.

  • How do delay rates compare for morning and evening flights from San Francisco to Boston?

    Evening flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

  • How much time can I save by choosing a different layover airport from San Francisco to Boston?

    Flying via Baltimore/Washington (BWI) gives the shortest average 1-stop total travel time at 8h 12m, compared with 8h 24m via Phoenix Sky Harbor Intl (PHX) and 8h 28m via Philadelphia (PHL).

  • What is the time difference between San Francisco and Boston?

    Boston is 3 hours ahead of San Francisco (Eastern Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at Boston Logan Intl Airport (BOS)?

    Boston Logan Intl Airport (BOS) hosts 5 major car rental companies, with daily rates starting from around $23 for economy cars. Top options include:
    · Dollar
    · Hertz
    · Budget
    · Thrifty
    · Sixt

  • How much should I expect to pay for a San Francisco to Boston flight?

    Round-trip flights from San Francisco to Boston range from $343 to $578, with an average of $442 over the past 12 months. Anything below $343 counts as a good deal.

  • Which airlines offer Wi-Fi on San Francisco to Boston flights?

    Two airlines offer in-flight Wi-Fi on San Francisco to Boston flights:

    • • JetBlue
    • • Delta

    Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

Your guide to booking San Francisco to Boston flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates can be flexible, aim for a Wednesday departure instead of Sunday. On this route, Wednesday flights average $395 - about $89 less than Sunday (18% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 4 weeks before you fly. On this route, that window historically saves about 33% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your San Francisco to Boston trip for January. Fares historically average $337 round-trip in that month - typically $169 less than the most expensive month, which is June (based on the last 12 months).
  • If arriving on time is high on your priority list, Alaska Airlines is the strongest pick on this route. 86% of Alaska Airlines flights from San Francisco to Boston arrived on time in the past 3 months, slightly above the route's average on-time arrival rate of 82%. When flights on this route do arrive late, the average delay is 2 hours 50 minutes, so choosing a carrier with strong on-time performance can make a difference on tight schedules.
  • If you have the time, taking a 1-stop flight through Baltimore/Washington Airport (BWI) can be cheaper than flying direct. The cheapest layover option averages $174 round-trip on this route - about $271 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Boston Logan Intl Airport.
    - Courtyard by Marriott Boston Logan Airport
    - Embassy Suites by Hilton Boston at Logan Airport
    - Hyatt Regency Boston Harbor
  • If you are interested in flights from San Francisco to Boston, there are three different airports that you can choose to fly out of. While San Francisco International Airport is the largest airport in the region and is closest to the city center, Oakland International Airport is another popular choice. San Jose Mineta International Airport is also a convenient option for anyone located south of San Francisco.
  • For those that would like a direct flight from San Francisco to Boston, consider booking your ticket with either JetBlue or Delta, as these companies are known for providing above-average legroom. If you are willing to have a connecting flight, consider booking with Southwest Airlines, as they allow travelers to check up to two bags for free.
  • To have a bit of extra help navigating San Francisco International Airport, look into hiring an Airport Butler. Airport Butlers are meant to provide assistance with carrying bags, checking in, finding your gate, and even personal shopping. They can be booked ahead of time through the airport’s website or directly at the check-in area.
  • Do you find flying to be stressful? Make sure to keep your eyes open for the San Francisco International Airport Wag Brigade. The Wag Brigade is made up of several trained dogs and a Juliana-breed pig, and they travel throughout the different terminals to say hi to travelers and relieve stress before boarding flights.
  • If you have some extra time to kill before your flight, consider purchasing an access pass for the Escape Lounge located in Oakland International Airport. This lounge is available to travelers from all airlines and provides complimentary snacks, access to televisions, and high-speed WiFi.
  • If you are a traveling enthusiast, consider booking flights from San Francisco to Boston with layovers. Common layovers on this route include Minneapolis St. Paul Airport (MSP), John F. Kennedy Airport (JFK), and Las Vegas Harry Reid Airport (LAS) depending on your airline alternative and the airport you are departing from.
  • Direct flights from San Francisco to Boston are eco-friendlier compared to flights with layovers, with approximately 1,863 kg of carbon being released per person. If you want to fly more sustainably, choose United Airlines. The airline releases 32% less carbon.
  • Boston’s downtown is roughly three to five miles from BOS and you can conveniently get there by either shuttle, bus, taxi, or rail. The MBTA rail leaves from the airport for South Station. The Silver Line 1 buses on route SL1 leave from all airport terminals to the city center whereas taxis, Lyft, and Uber offer door-to-door services. Shuttles are offered by Massport for free.
  • Take time to check out the art installations at Oakland International Airport (OAK) and elevate your airport experience. If you are leaving from Gates 26-32, there is a striking glass window wall, 160 feet long, titled Going Away, Coming Home. The North Field at OAK is also home to Oakland Aviation Museum.
  • Bring forth your inner Elton John with the pianos at San Jose International Airport (SJC). Go ahead and share your talents with other travelers opposite the security checkpoint on Terminal A’s Level 2. There is also a baby grand in the Baggage Claim of Terminal B.

Prefer to fly direct from San Francisco to Boston?

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

Direct departures

San Francisco to Boston Logan Intl

Monday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Tuesday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Wednesday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Thursday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Friday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Saturday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Sunday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

See more direct flights

Direct returns

Boston Logan Intl to San Francisco

Monday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Tuesday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Wednesday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Thursday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Friday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Saturday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

Sunday

Delta,JetBlue,United Airlines

Delta,JetBlue, +1 more

See more direct flights

Everything you need to know for your flight from San Francisco to Boston

Other airlines flying from San Francisco to Boston