BOS - SFO

₹ 10,328 Find Cheap Flights from Boston to San Francisco

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 3/3. 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
1 adult, Economy, 0 bags

KAYAK searches 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
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Everything you should know

Cheapest return fare
₹ 20,566
Overall average: ₹ 30,984
Delta
Wed 4/3Wed 11/3
BOS - SFO • Direct
Cheapest direct flights
₹ 20,566
Typical prices: ₹ 22,740-₹ 42,309
JetBlue
Wed 11/3Wed 18/3
BOS - SFO • Direct
Our travellers' advice
AI-powered summary based on content written by KAYAK users. AI can make mistakes.
Book Delta's morning flights for better reliability.
Save Alaska's pass to your wallet app for convenience.
User tips
User tips
User tips
User tips
Top airlines
Delta
Cheapest • from ₹ 20,566 (return)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 42% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
September
Cheapest • 9% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to San Francisco!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Boston to San Francisco

Wed, 4 Mar - Wed, 11 Mar
Delta Logo
17:35 - 21:35
BOS
-
SFO
7h 00mdirect
Delta Logo
13:00 - 21:39
SFO
-
BOS
5h 39mdirect
₹ 20,566Delta
Tue, 24 Feb - Wed, 4 Mar
Alaska Airlines Logo
07:00 - 14:02
BOS
-
SFO
10h 02m
1 stop
Alaska Airlines Logo
11:34 - 23:59
SFO
-
BOS
9h 25m
1 stop
₹ 21,019Alaska Airlines
Tue, 3 Mar - Tue, 10 Mar
JetBlue Logo
07:10 - 11:10
BOS
-
SFO
7h 00mdirect
JetBlue Logo
12:30 - 21:08
SFO
-
BOS
5h 38mdirect
₹ 21,472JetBlue
Sat, 4 Apr - Sat, 11 Apr
JetBlue Logo
21:15 - 00:59
BOS
-
SFO
6h 44mdirect
JetBlue Logo
20:45 - 05:27
SFO
-
BOS
5h 42mdirect
₹ 21,653JetBlue
Tue, 24 Feb - Tue, 3 Mar
Delta Logo
07:45 - 11:47
BOS
-
SFO
7h 02mdirect
Delta Logo
07:10 - 15:49
SFO
-
BOS
5h 39mdirect
₹ 21,925Delta
Wed, 4 Mar - Tue, 17 Mar
Delta Logo
17:35 - 21:35
BOS
-
SFO
7h 00mdirect
Delta Logo
13:05 - 05:32
SFO
-
BOS
13h 27m
1 stop
₹ 22,287Delta
Sat, 28 Feb - Tue, 3 Mar
Delta Logo
17:35 - 21:35
BOS
-
SFO
7h 00mdirect
Delta Logo
13:00 - 21:35
SFO
-
BOS
5h 35mdirect
₹ 22,378Delta
Mon, 23 Feb - Tue, 3 Mar
JetBlue Logo
20:33 - 00:25
BOS
-
SFO
6h 52mdirect
JetBlue Logo
20:44 - 05:15
SFO
-
BOS
5h 31mdirect
₹ 22,559JetBlue
Thu, 5 Mar - Wed, 11 Mar
Alaska Airlines Logo
17:44 - 23:59
BOS
-
SFO
9h 15m
1 stop
Alaska Airlines Logo
11:34 - 23:59
SFO
-
BOS
9h 25m
1 stop
₹ 22,649Alaska Airlines
Wed, 29 Apr - Sat, 2 May
Delta Logo
10:55 - 19:54
BOS
-
SFO
11h 59m
1 stop
Delta Logo
07:05 - 15:39
SFO
-
BOS
5h 34mdirect
₹ 22,740Delta
Booking Insights

KAYAK's insights & trends for Boston to San Francisco flights

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

The average price of all round-trip flights from Boston to San Francisco clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Boston to San Francisco, look for departures on Mondays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from San Francisco, Sunday is the cheapest day to fly and Wednesday is the most expensive.

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 round-trip 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 September, where tickets cost ₹ 30,531 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is ₹ 39,410 and ₹ 35,061 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip 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 week.

To get a below average price on the flight from Boston to San Francisco, you should book around 4 weeks before departure, which saves you about 42% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight₹ 10,328
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly (2% 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.

Flights from Boston to San Francisco: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Boston to San Francisco 
GeraldFlew with Delta
BOS
-
SFO
Mar 2025
Book a flight early in the morning. The plane & crew will have arrived the previous night
PaulaFlew with Alaska Airlines
BOS
-
SFO
Jul 2024
Get your boarding pass online and save it to your wallet App on the iPhone. Makes it so easy

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 ₹ 10,328 for a one-way ticket and ₹ 20,566 for a return.

  • 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, Hawaiian Airlines, Asiana Airlines, American Airlines, and Delta.

  • 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?

    SkyTeam is the only airline alliance operating flights between Boston and San Francisco.

  • 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.

  • Which is the best airline for flights from Boston to San Francisco, Delta or JetBlue?

    The two airlines most popular with KAYAK users for flights from Boston to San Francisco are Delta and JetBlue. With an average price for the route of ₹ 23,872 and an overall rating of 7.9, Delta is the most popular choice. JetBlue is also a great choice for the route, with an average price of ₹ 31,525 and an overall rating of 7.2.

  • 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.

KAYAK’s top tips for finding a cheap flight from Boston to San Francisco

  • 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.

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

 
Nonstop data is based off flight results for the next 60 days. Find direct flights from all airlines flying nonstop from Boston Logan Intl to San Francisco.
Find which airlines fly direct from Boston Logan Intl Airport to San Francisco Airport, which days they fly and book direct flights.

Direct departures

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

Direct returns

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

Reviews of the top airlines flying from Boston to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Boston to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to San Francisco? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8180 reviews
8.1Boarding
7.8Entertainment
7.2Food
8.5Crew
7.9Comfort
Airline reviews

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

2.0 MediocreJaspreet, Feb 2026
SEA - SMF
Read more Delta reviews

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

They double booked seats, the gate staff changed my ticket as I was boarding she went over to the computer and changed it without telling me. She messed up an entire three row section for me and others. Other travelers were outraged but the gate staff were so rude, so condescending saying it wasn't their problem to solve. I would rate this a zero if I could. Will not fly Delta again I'll stick with United and American.

I was given middle seat on this flight and prior Boston to Seoul flight That is a problem for long flights, Kayak system did not give me a change to select my seats and assigned me middle seats regardless of my elevated status in Delta. This needs immediate attention.

Inexperienced boarding crew allowed too many bags on to a full flight and delayed takeoff causing a missed connection and unplanned overnight stay. There was a hotel at the airport but Delta would not pay for it offering only to shuttle me to an area hotel. Never even offerred so much as an apology by anyone working for Delta.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Did not realize internet screen was hidden between seats and no info printed!!!!

I noticed that the planes seem to be outdated. There was no entertainment per se. Also, the waiting area did not have any working electrical outlets

Service in business class was not impressive. I ordered coffee with dinner and then watched other people get 2 refills before I got my 1 cup of coffee, and only after I pressed the attendant button overhead. Furthermore, the seats in the forward cabin need maintenance on this 737-800: the upholstery is detaching from the seat frame, at least on the backs of seats 1C, 1D.

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

The crew for the flight was A+ top notch. They were friendly and professional and made the flight a very relaxing and enjoable.

Rude crew member. She seemed annoyed at me without me saying a single word. Also loudly admonished me for having my bag next to my seat instead of tucked away before landing. Just telling me to put it away and guiding me without giving me a lecture would have been enough.

No included food for a 5 hour flight and the entertainment was only accessible if you had wired headphones (not provided). Otherwise though, great and smooth flying and customer service.

Crew were fantastic and so catering and wonderful! Full score for the entire crew!

Because of weather and mechanical issues our flight was 4 hours late. The only compensation offered to us was a meal voucher to be used only at Boston Airport and only on the day issued. But by the time it was offered to us all the restaurants were closed, so there was no way to use that offer.

Friendly crew, efficient boarding and flight arrived early. Couldn’t ask for a better experience

Terrible. They canceled our early morning flight after midnight on the day of and had no available flights to rebook my family on for the next 72 hours. Yet they still had other flights that were not cancelled from JFK so it couldn’t be based on the weather. It felt like they canceled the flight based on it not being profitable enough for them. I am not interested in traveling with the again. The absolute worse customer service and lack of accountability.

Horribly rude check in at airport, worst in 25 years of flying. All over a simple issue they could have googled to resolve.

First time flying with JetBlue and never again. I went to the counter to request meet and assist because I'm 74 and my wife is 79. I walk with a cane and my wife is handicapped and has her own wheel chair. I told the agent that my wife and luggage was at the entrance door. The ticketing agent said to me that they don't offer meet and assist. I need to bring them our luggage and then go back and get my wife in order to get my boarding pass. As I went back to get my luggage a Southwest agent along with a TSA agent recognized the situation and came over and took my wife and luggage to the JetBlue ticketing counter alongside the line and told the JetBlue agent to issue to take our luggage as soon as they could.

1) No pilot available for 1 hour 2) no room for most passengers careyon in overhead—-> stowed below 3) when we landed we had to wait 45 min. Before docking at gate as gate was not ready

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

Information on your arrival and departure airports