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*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days
BOS - SFO
Find cheap flights from Boston to San Francisco
Round-trip
Economy
Search hundreds of travel sites at once for deals on flights to San Francisco
Good to know
Low season |
September | Best time to beat the crowds with an average 14% drop in price. |
|---|---|---|
High season |
December | Most popular time to fly with an average 20% increase in price. |
Average price of a round-trip |
$323 | (avg. price over the last 2 weeks) |
Good deal for a round-trip |
$294 | or less |
When to book flights from Boston to San Francisco
Estimated round-trip price
Average price per month
Flight prices as travel date approaches
-1 day
-2 days
Top tips for finding a cheap flight
- Looking for a cheap flight? 25% of our users found flights on this route for $228 or less.
- The cheapest flight from Boston to San Francisco was found 51 days before departure, on average.
- Book at least 3 weeks before departure in order to get a below-average price.
- High season is considered to be November, December and January. The cheapest month to fly is September.
- Morning departure is around 18% cheaper than an evening flight, on average*.
- 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.
FAQs for booking Boston to San Francisco flights
Are flight prices cheaper from Boston to San Francisco because of Coronavirus (COVID-19)?
How long does a flight from Boston to San Francisco take?
How many flights are there between Boston and San Francisco?
Which airlines provide the cheapest flights from Boston to San Francisco?
Do I need a passport to fly between Boston and San Francisco?
Which airlines fly most frequently between Boston and San Francisco?
What’s the cheapest day of the week to fly Boston to San Francisco?
Which airports will I be using when flying 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?
If I am being picked up at San Francisco Airport, where is the best place for my ride to meet me?
Is there a post office at San Francisco Airport?
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How does KAYAK’s flight Price Forecast tool help me choose the right time to buy?
Top 3 airlines serving Boston Logan Intl to San Francisco
Scores according to KAYAK customer reviews
8.2
JetBlue
Overall score based on 19,167 reviews
8.3
Boarding
8.3
Comfort
8.6
Crew
7.9
Entertainment
7.8
Food
Book cheap flights from Boston to San Francisco (round-trip)
Multiple Airlines
Wed, Aug 12
BOS
Boston Logan Airport
SFO
San Francisco Airport
21h 50m
Mon, Aug 17
SFO
San Francisco Airport
BOS
Boston Logan Airport
24h 23m
Trip: 6 days
Based on null reviews
Multiple Airlines
Tue, Jul 28
BOS
Boston Logan Airport
SFO
San Francisco Airport
39h 10m
Wed, Aug 12
SFO
San Francisco Airport
BOS
Boston Logan Airport
24h 23m
Trip: 16 days
Based on null reviews
Multiple Airlines
Wed, Jul 29
BOS
Boston Logan Airport
SFO
San Francisco Airport
39h 10m
Sat, Aug 15
SFO
San Francisco Airport
BOS
Boston Logan Airport
24h 23m
Trip: 18 days
Based on null reviews
Multiple Airlines
Wed, Aug 5
BOS
Boston Logan Airport
SFO
San Francisco Airport
28h 00m
Wed, Aug 12
SFO
San Francisco Airport
BOS
Boston Logan Airport
24h 23m
Trip: 8 days
Based on null reviews
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Book cheap flights from Boston to San Francisco (one-way)
Based on null reviews
Based on null reviews
Based on null reviews
Based on null reviews
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Boston - San Francisco Flights
Departure:
Boston (BOS) United States
Destination:
San Francisco (SFO) United States
Return flight deals:
Browse destinations:
$158
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.
We attempt to get accurate prices, however, prices are not guaranteed.
We attempt to get accurate prices, however, prices are not guaranteed.
Here's why:
We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.
We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.
Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.
If you have more questions or if you have a bad price to report to us,
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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last
72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may
not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags.
Please check the carriers' sites.
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