BOS - SFO

₹ 10,663 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 16/1. 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
₹ 19,893
Overall average: ₹ 29,839
Southwest
Wed 21/1Wed 28/1
BOS - SFO • 2 stops
Cheapest direct flights
₹ 20,341
Typical prices: ₹ 21,596-₹ 42,474
JetBlue
Sun 8/2Mon 16/2
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
United Airlines
Cheapest • from ₹ 20,341 (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 41% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
March
Cheapest • 10% 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, 21 Jan - Wed, 28 Jan
Southwest Logo
06:50 - 14:20
BOS
-
SFO
10h 30m2 stops
Southwest Logo
06:05 - 16:50
SFO
-
BOS
7h 45m1 stop
₹ 19,893Southwest
Tue, 20 Jan - Sun, 25 Jan
United Airlines Logo
06:00 - 09:55
BOS
-
SFO
6h 55mdirect
United Airlines Logo
22:35 - 10:36
SFO
-
BOS
9h 01m1 stop
₹ 20,341United Airlines
Wed, 4 Feb - Tue, 10 Feb
Delta Logo
07:30 - 17:47
BOS
-
SFO
13h 17m1 stop
Delta Logo
07:10 - 15:51
SFO
-
BOS
5h 41mdirect
₹ 20,610Delta
Wed, 11 Feb - Sat, 14 Feb
United Airlines Logo
10:56 - 14:51
BOS
-
SFO
6h 55mdirect
United Airlines Logo
23:55 - 10:55
SFO
-
BOS
8h 00m1 stop
₹ 20,968United Airlines
Wed, 11 Feb - Tue, 24 Mar
Delta Logo
07:50 - 11:50
BOS
-
SFO
7h 00mdirect
Delta Logo
13:00 - 21:39
SFO
-
BOS
5h 39mdirect
₹ 21,058Delta
Tue, 3 Feb - Mon, 9 Feb
Alaska Airlines Logo
16:20 - 22:47
BOS
-
SFO
9h 27m1 stop
Alaska Airlines Logo
18:56 - 15:20
SFO
-
BOS
17h 24m1 stop
₹ 21,148Alaska Airlines
Fri, 16 Jan - Mon, 19 Jan
United Airlines Logo
10:56 - 14:51
BOS
-
SFO
6h 55mdirect
United Airlines Logo
23:25 - 08:10
SFO
-
BOS
5h 45mdirect
₹ 21,237United Airlines
Tue, 13 Jan - Wed, 14 Jan
Delta Logo
07:50 - 11:50
BOS
-
SFO
7h 00mdirect
Delta Logo
08:55 - 06:14
SFO
-
BOS
18h 19m1 stop
₹ 21,506Delta
Sat, 17 Jan - Tue, 20 Jan
Delta Logo
07:30 - 17:47
BOS
-
SFO
13h 17m1 stop
Delta Logo
07:10 - 15:51
SFO
-
BOS
5h 41mdirect
₹ 21,596Delta
Wed, 21 Jan - Sat, 24 Jan
Southwest Logo
06:50 - 14:20
BOS
-
SFO
10h 30m2 stops
Southwest Logo
12:30 - 22:55
SFO
-
BOS
7h 25m1 stop
₹ 21,685Southwest
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 Wednesdays 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 March, where tickets cost ₹ 29,750 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is ₹ 40,772 and ₹ 34,858 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 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight₹ 10,663
Best time to beat the crowds (9% 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 ₹ 10,663 for a one-way ticket and ₹ 19,893 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, American Airlines, Asiana Airlines, Hawaiian Airlines, and Delta.

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

    The Airbus A321neo 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 ₹ 34,677 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 ₹ 28,366 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

  • Looking for a cheap flight? 25% of our users found flights on this route for ₹ 22,717 or less one-way.
  • 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

Alaska Airlines, Delta, JetBlue, +1 more

Alaska Airlines, Delta, +2 more

Tuesday

Alaska Airlines, Delta, JetBlue, +1 more

Alaska Airlines, Delta, +2 more

Wednesday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

Thursday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

Friday

Alaska Airlines, Delta, JetBlue, +1 more

Alaska Airlines, Delta, +2 more

Saturday

Alaska Airlines, Delta, JetBlue, +1 more

Alaska Airlines, Delta, +2 more

Sunday

Alaska Airlines, Delta, JetBlue, +1 more

Alaska Airlines, Delta, +2 more

See more direct flights

Direct returns

San Francisco to Boston Logan Intl

Monday

Alaska Airlines, Delta, JetBlue, +1 more

Alaska Airlines, Delta, +2 more

Tuesday

Alaska Airlines, Delta, JetBlue, +1 more

Alaska Airlines, Delta, +2 more

Wednesday

Alaska Airlines, Delta, JetBlue, +1 more

Alaska Airlines, Delta, +2 more

Thursday

Delta, JetBlue, United Airlines

Delta, JetBlue, +1 more

Friday

Alaska Airlines, Delta, JetBlue, +1 more

Alaska Airlines, Delta, +2 more

Saturday

Alaska Airlines, Delta, JetBlue, +1 more

Alaska Airlines, Delta, +2 more

Sunday

Alaska Airlines, Delta, JetBlue, +1 more

Alaska Airlines, Delta, +2 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 8013 reviews
7.9Entertainment
7.9Comfort
8.5Crew
8.1Boarding
7.3Food
Airline reviews

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

10.0 ExcellentMargaret, Dec 2025
BOS - PIT
Read more Delta reviews

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.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

My issue was with TSA agents for delta airlines. My luggage got flagged. The agent was going thru another persons first. He took 20 min to go thru hers. I asked them to bring mine closer so I could sit down . They said you can go sit it will be fine. I said I am supposed to keep my eyes on my bags at all times. The agent was meticulously unwrapping 2 gifts that the lady had and then tried to re warp it. He was trying to be kind i get it but 20 min for me to stand watching him do that was ridiculous. It was 6 am and there were a ton of travelers. Mine was flagged for some air packed tea that I bought in Turkey. My previous delta flight and 2 others before didn’t flag it. Consistency would be nice. Also on the flight the window shades were down for take off and landing - I thought that was very odd I thought they had to remain open for take off and landing.

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

It was good. I prefer JB over other airlines.I just wish we had headphones for the films, but other than that - good.

The ride share experience in JFK is terrible. After traveling on a flight, then you need to take a subway to the last stop to get an uber or lyft. Unacceptable. Bad job JetBlue for permitting JFK and Port Authority to do this to your passengers.

Checking In on JetBlue site was impossible. It hung up on REAL ID. Even my Global Entry did not help. Luckily, on Kayak site it was a breeze. Entire flight the temperature was COLD! Otherwise the crew was great!

The flight was two hours late due to a computer fault and resulting maintenance. Nothing was offered as compensation beyond bottles of water during the time we were deplaned and waiting in the terminal.

Very pleasant flight attendants. Gate crew rather loud chatting with each other.

Four plus hour flight delay in New York caused us to take off after 11:30pm. We didn’t arrive at our hotel until five hours after check in. Started the trip off feeling exhausted.

Plane was in bad shape. TV’s and WiFi didn’t work. Plane need a refresh. Not enough room for bags.

Everything was great. I liked the text updates so that I never miss a gate change & I have all the latest info.

I don’t usually fly budget airlines or airlines in the United States. It was as good as any other airline. The seats are comfortable and the airline attendants are not rude & surly. Very nice flight (s).

They have the most inexperienced / rude flight staff I’ve encountered

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

Information on your arrival and departure airports