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BOS - SFO

Find cheap flights from Boston to San Francisco from £80

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 29/5. 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
0 bags
Sat 1/6
Sat 8/6

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 43,740,974 times on KAYAK, and here's why:

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Cheap flight deals from Boston to San Francisco (BOS-SFO)

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.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
21:15 - 00:45BOS-SFO
6h 30mdirect
06:00 - 14:35SFO-BOS
5h 35mdirect
£174JetBlue
Find Deal
Sat, 24 Aug - Wed, 4 Sep
14:40 - 23:59BOS-SFO
12h 19m1 stop
06:00 - 14:35SFO-BOS
5h 35mdirect
£181JetBlue
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Sat, 24 Aug - Wed, 4 Sep
19:00 - 22:39BOS-SFO
6h 39mdirect
06:00 - 14:35SFO-BOS
5h 35mdirect
£188JetBlue
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Thu, 5 Sep - Wed, 11 Sep
07:05 - 11:04BOS-SFO
6h 59mdirect
07:00 - 15:37SFO-BOS
5h 37mdirect
£196Delta
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Sat, 31 Aug - Tue, 10 Sep
08:50 - 12:25BOS-SFO
6h 35mdirect
16:48 - 05:50SFO-BOS
10h 02m1 stop
£199Alaska Airlines
Find Deal
Thu, 30 May - Tue, 4 Jun
17:10 - 21:05BOS-SFO
6h 55mdirect
22:05 - 06:57SFO-BOS
5h 52mdirect
£204Delta
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Wed, 29 May - Mon, 3 Jun
07:00 - 13:40BOS-SFO
9h 40m1 stop
14:30 - 23:01SFO-BOS
5h 31mdirect
£208Alaska Airlines
Find Deal
Tue, 21 May - Tue, 28 May
11:19 - 16:34BOS-SFO
8h 15m1 stop
23:59 - 10:22SFO-BOS
7h 23m1 stop
£268Sun Country Air
Find Deal
Sat, 8 Jun - Mon, 24 Jun
11:14 - 16:47BOS-SFO
8h 33m1 stop
17:45 - 23:16SFO-BOS
26h 31m1 stop
£288Sun Country Air
Find Deal
Tue, 25 Jun - Tue, 9 Jul
17:59 - 00:17BOS-SFO
9h 18m1 stop
05:30 - 15:59SFO-BOS
7h 29m1 stop
£331United Airlines
Find Deal
Thu, 16 May - Tue, 21 May

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

The average price of all flights from Boston to San Francisco clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to San Francisco on a Monday and more expensive on a Wednesday. On your return trip to Boston, you should consider flying back on a Monday, and avoid Thursdays for better deals.

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 £222 on average. On the other hand, the most expensive months are June and December, where the average cost of tickets is £375 and £367 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.
The best deals for a one-way ticket found by KAYAK users over the last 3 days were on JetBlue (£80) and Delta (£84). The cheapest round-trip tickets were found on JetBlue (£174) and Delta (£196).

Which airlines fly most frequently between Boston and San Francisco?

Boston and San Francisco are connected by different airlines. The airlines that fly that route the most regularly are United Airlines (7 flights per day), JetBlue (4 flights per day), and Alaska Airlines (3 flights per day).

Which airlines fly direct between Boston and San Francisco?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Boston to San Francisco.
There are 4 airlines that fly direct from Boston to San Francisco. They are: Alaska Airlines, Delta, JetBlue and United Airlines. The cheapest price of all airlines flying this route was found with JetBlue at £100 for a one-way flight. On average, the best prices for this route can be found at JetBlue.

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

Each day, there are between 15 and 21 nonstop flights that take off from Boston and land in San Francisco, with an average flight time of 6h 39m. The most common departure time is 07:00 and most flights take off in the morning. Each week, there are 133 flights. The most frequent day of departure is Thursday, when 16% of all weekly flights depart. The fewest flights depart on a Saturday.

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, Business and 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?

A direct flight to San Francisco will take on average 6h 25m to travel the 2,696 miles flying distance from Boston.

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

Early birds can take the earliest flight from Boston at 06:15 and will be landing in San Francisco at 09:50.

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 21:30 and lands at 00:56.

Good to know - Cheap tickets from Boston to San Francisco

Low season

January

High season

December

Cheapest flight

£80
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 £100 for a one-way ticket and £217 for a return.

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

    JetBlue, Alaska Airlines, Delta, American Airlines, and Hawaiian Airlines offer inflight Wi-Fi service on the Boston to San Francisco flight route.

  • 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.

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

    The two airlines most popular with KAYAK users for flights from Boston to San Francisco are Alaska Airlines and JetBlue. With an average price for the route of £339 and an overall rating of 8.0, Alaska Airlines is the most popular choice. JetBlue is also a great choice for the route, with an average price of £211 and an overall rating of 7.6.

  • 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 from San Francisco to Boston? 25% of our users found flights on this route for £133 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.
See more tips

Prefer to fly direct from Boston 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, +19 more

ANA, Air New Zealand, +20 more

Tuesday

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

ANA, Air New Zealand, +20 more

Wednesday

ANA, Air China, Air New Zealand, +20 more

ANA, Air China, +21 more

Thursday

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

ANA, Air New Zealand, +20 more

Friday

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

ANA, Air New Zealand, +19 more

Saturday

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

ANA, Air China, +20 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, +20 more

ANA, Air New Zealand, +21 more

Tuesday

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

ANA, Air New Zealand, +21 more

Wednesday

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

ANA, Air China, +20 more

Thursday

ANA, Air New Zealand, Alaska Airlines, +21 more

ANA, Air New Zealand, +22 more

Friday

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

ANA, Air New Zealand, +19 more

Saturday

ANA, Air China, Air New Zealand, +22 more

ANA, Air China, +23 more

Sunday

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

ANA, Air New Zealand, +21 more

See more direct flights
See more direct flights

Top 3 airlines serving 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.
8.0
Alaska AirlinesOverall score based on 9115 reviews
7.3Food
7.3Entertainment
7.9Comfort
8.6Crew
8.2Boarding
Airline reviews

Like South West(2 check in baggage free) if Alaskan Airlines could give at least one check in baggage free then it would be great.

8.0 ExcellentAnonymous, May 2024OGG - SFO
Read more about Alaska Airlines reviews

Like South West(2 check in baggage free) if Alaskan Airlines could give at least one check in baggage free then it would be great.

Staff great. Tight seating. Pretzels and drink same as any other airline.

Horrible. I likely will have to spend several thousand dollars to rebook my international flights, due to their delays, plus a hotel in SF. I can’t wait to never fly them again!

I was seated at the back of the plane and the flight attendants were fantastic. I did not get food so can’t say. Thought the movie selection was lean.

The messaging about the change in flight destination and options for getting to SFO was poor. There should have been frequent updates. When I spoke to the boarding agent moment before we were supposed to board, he was flippant and offered no help before the announcement was made that transportation would be arranged. It was as poor of an experience that I've ever had.

My plane ride down landed 20 min late. Boarding at SFO was strange too. The people at the terminal were nice—but, boarding lacked direction, and was confusing . Coming back was worse—the plane was hours behind—and I barely caught the last Bart train back to San Francisco (3 min more and I would have been in trouble). It was a very stressful trip, and it didn’t need to be.

dont re-route to San Jose. Re-route to closer airport. Provide shuttle bus to go to SFO, not just LYFT vouchers.

WiFi connection bad. Food is really awful. Crew very nice and efficient

It was the worst experience because they delayed the flight by 2 and half hours. We were supposed to depart by 3:41 but they did the depart by 6 pm. It was so boring!!

This was a short flight with many open seats. Overhead space is limited and there are no screens in the seat back. But overall the flight was comfortable and fast.

I had back trouble prior to my flight and everyone was great about helping me.

My tv was broken on the flight which is disappointing when you pay for a seat and expect a service

Always delays from Boston to Salt lake but this time was very long. Don’t understand while they board the passengers and then make them sit in the plane

Service for food to our seat was a bit slow. Snack choices were just pretzels or baked chips. My seat cushion was not attached. Other than Barbie, video choice were not very good or current.

After we landed, we were held on the plane for 30 minutes. There was no one at the gate once we landed and we forced to sit on a plan that had already over an hour delayed.

almost 4 hour delay as they over booked and had to wait for 8-10 volunteers to agree to travel next day.

Old plane. No outlets for laptop or phone. Seats worn out. Area around seat dirty.

I loved the flight and the crew. It was comfortable and smooth.

The crew was openly hostile and condescending to the customers. They spent the majority of that time in the rear talking and seemed really agitated when people asked questions. I heard five different people told that the information they requested was in the handout or safety brief.

ticketing issues caused many customers to have to go back to check in after waiting in security, then go through security line again.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

So so. Terrible aircraft choice for that leg of the flight.

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

This was a Lufthansa flight. Disappointing main meal. Very rough over Canada and arrival at FRA. IFE was almost unusable.

I was not able to buy food in the flight. They refer to include your Credit card in the APP, and if you are not from USA (i have a credit card form Canada) it is not possible

The flight and crew were fine. The entertainment- the sound was so bad through the headphones I could barely understand it and it was a show I had seen before. The food might have been fine but having to have an account with united in order to access the app in order to pay for the food was rage inducing. I had entered my credit card info at home and logged in as guest but that wouldn’t allow the “wallet” tab to open in the app. And then the wifi was so bad that it took about 45 minutes to fully log in and get all the info working at which time I missed the food. You shouldn’t have to give your address, email and phone number in order to get a hamburger.

United airline kept delaying our flight back to Phoenix for 8 hours before they cancelled it! If they know that we are not flying out for whatever the reason is, why did they keep lying to us for hours. We could find another flight earlier or even find a hotel with a shuttle. But cancellation at about midnight was not fun. We stayed in the airport all night till the following morning when we bought an Alaska tickets to go back to Phoenix. Total of 14 hours in the airport.

Poor seating comfort, seat cushion too thin, very uncomfortable. My luggage didi not make the flight due to equipment change. At least. United had it delivered the next day. I was without my toilet items for one day.

My experience is based on one crew member. I had found my seat and sat down but there was a gentleman to claimed to the flight attendant I was in his seat. She then came to me and curtly said, "I need your ticket!" No hi, no excuse me may I see your boarding pass? NOTHING! I was taken aback by her attitude and she repeated herself, "your ticket?!?!" I calmly responded with ok, here you go. Only to discover the gentleman was looking at the wrong boarding pass. She gave me back my ticket with no apology. She then was curt with another man who was putting his coat in the overhead bin, already helped by another flight attendant who said it was fine. She realizes it's ok and then asks him if he drinks. The look on the man's face was priceless. She said she was going to comp him drinks. He gets offered a comp drink for a coat as well as an apology, and I got no apology.

Book cheap flights from Boston to San Francisco

Cheapest flights to San Francisco from Boston found in 2024

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.
29/5Wed
directJetBlue
6h 26mBOS-SFO
£80
27/8Tue
directDelta
6h 56mBOS-SFO
£84
14/5Tue
3 stops
34h 19mBOS-SFO
£87
25/5Sat
1 stopAlaska Airlines
9h 13mBOS-SFO
£91
28/5Tue
directDelta
6h 55mBOS-SFO
£92
26/5Sun
directAlaska Airlines
6h 35mBOS-SFO
£94
14/5Tue
2 stopsFrontier
15h 38mBOS-SFO
£95
14/5Tue
3 stops
27h 13mBOS-SFO
£133
4/9Wed
2 stopsUnited Airlines
13h 34mBOS-SFO
£203
17/9Tue
2 stopsUnited Airlines
17h 22mBOS-SFO
£237

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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.
2/5Thu
directJetBlue
6h 26mBOS-SFO
6/9Fri
directJetBlue
5h 31mSFO-BOS
£283
2/5Thu
directJetBlue
6h 37mBOS-SFO
5/9Thu
directJetBlue
5h 31mSFO-BOS
£291
2/5Thu
directJetBlue
6h 37mBOS-SFO
7/9Sat
multi-stopJetBlue
9h 45mSFO-BOS
£298
2/5Thu
directDelta
6h 58mBOS-SFO
1/9Sun
directDelta
5h 47mSFO-BOS
£314
2/5Thu
multi-stopDelta
11h 25mBOS-SFO
6/9Fri
directDelta
5h 47mSFO-BOS
£332
4/5Sat
multi-stopAlaska Airlines
8h 46mBOS-SFO
7/5Tue
directAlaska Airlines
5h 42mSFO-BOS
£343
3/5Fri
multi-stopAlaska Airlines
8h 46mBOS-SFO
11/5Sat
directAlaska Airlines
5h 42mSFO-BOS
£351
3/5Fri
directUnited Airlines
6h 42mBOS-SFO
13/5Mon
multi-stopUnited Airlines
7h 29mSFO-BOS
£431
3/5Fri
multi-stopUnited Airlines
9h 00mBOS-SFO
10/5Fri
multi-stopUnited Airlines
7h 29mSFO-BOS
£439
5/5Sun
multi-stopAmerican Airlines
12h 54mBOS-SFO
10/5Fri
multi-stopAmerican Airlines
14h 51mSFO-BOS
£716

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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:

£441

Browse origins:

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  • Boston

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