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San Francisco Bay Area

$108+ Cheap flights from Boston (BOS) to San Francisco Bay Area

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SFO
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Boston to San Francisco Bay Area

Cheapest flights from Boston to San Francisco Bay Area
Explore the most affordable flight options available from Boston to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Expedia deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:00 amBOS - SFO
1 stop10h 13mMultiple Airlines
Thu 1/228:26 amSFO - BOS
Nonstop5h 39mMultiple Airlines
Deal found 12/16$286
This Priceline deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:00 amBOS - SFO
1 stop10h 13mMultiple Airlines
Sun 1/118:29 pmSFO - BOS
Nonstop5h 31mMultiple Airlines
Deal found 12/16$310
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1612:10 pmBOS - SJC
1 stop11h 31mDelta
Thu 12/2512:31 pmSJC - BOS
1 stop8h 23mDelta
Deal found 12/16$335
This Priceline deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:00 amBOS - SFO
1 stop10h 13mMultiple Airlines
Sun 1/111:50 pmSFO - BOS
Nonstop5h 39mMultiple Airlines
Deal found 12/16$340
This Priceline deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/216:00 amBOS - SFO
1 stop10h 13mMultiple Airlines
Wed 1/712:20 pmSFO - BOS
Nonstop5h 38mMultiple Airlines
Deal found 12/16$350
This Priceline deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:00 amBOS - SFO
1 stop10h 13mMultiple Airlines
Wed 12/318:44 pmSFO - BOS
Nonstop5h 31mMultiple Airlines
Deal found 12/16$351
This United Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:00 amBOS - SFO
Nonstop6h 45mUnited Airlines
Wed 1/218:25 amSFO - BOS
Nonstop5h 48mUnited Airlines
Deal found 12/15$367
This Priceline deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:00 amBOS - SFO
1 stop10h 13mMultiple Airlines
Wed 1/712:20 pmSFO - BOS
Nonstop5h 38mMultiple Airlines
Deal found 12/16$370
This Expedia deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:00 amBOS - SFO
1 stop10h 13mMultiple Airlines
Tue 12/307:25 amSFO - BOS
Nonstop5h 47mMultiple Airlines
Deal found 12/16$372
This Alaska Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:52 pmBOS - SFO
Nonstop6h 56mAlaska Airlines
Wed 1/217:00 amSFO - BOS
1 stop7h 39mAlaska Airlines
Deal found 12/15$377
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/186:10 amBOS - SJC
1 stop9h 21mDelta
Thu 12/2512:31 pmSJC - BOS
1 stop8h 23mDelta
Deal found 12/16$388
This Delta deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/175:40 amBOS - SJC
1 stop9h 00mDelta
Fri 12/261:45 pmSJC - BOS
1 stop7h 39mDelta
Deal found 12/17$392

Find flight deals from Boston to San Francisco Bay Area

Keep the following information in mind while searching for Boston to San Francisco Bay Area flight deals. Data was last updated December 18, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$217
(Delta)

One-way from

$108
(Alaska Airlines)

Popular in

December

Cheapest in

January

Average price

$447
Provider with most accurate pricing for Boston Logan Intl-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-San Francisco flights.
Search Deals
From Boston Logan Intl to San Francisco Bay Area
Search Deals
One-way flight from Boston Logan Intl to San Francisco Bay Area
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to San Francisco Bay Area that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
Use the filters below to find and compare flights from Boston to San Francisco Bay Area that are best for you.

Fly from

Boston

Fly to

San Francisco Bay Area

Route

Depart

Return

Price

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Fri 1/16

7:07 pm-1:30 am

1 stop9h 23m

San Francisco

Tue 1/20

1:00 pm-9:42 pm

Nonstop5h 42m

$227

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Mon 1/12

6:44 pm-9:48 am

1 stop18h 04m

San Jose

Mon 1/26

5:45 pm-5:39 pm

1 stop20h 54m

$236

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sat 2/28

8:40 pm-12:31 am

Nonstop6h 51m

San Francisco

Tue 3/10

8:41 pm-5:12 am

Nonstop5h 31m

$237

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sat 1/24

5:40 pm-9:42 pm

Nonstop7h 02m

San Francisco

Sun 2/1

7:10 am-3:51 pm

Nonstop5h 41m

$237

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Thu 1/8

7:15 am-1:30 pm

1 stop9h 15m

San Jose

Sun 1/18

5:04 pm-6:05 am

1 stop10h 01m

$237

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Wed 1/14

7:15 am-1:34 pm

1 stop9h 19m

San Jose

Sat 1/17

6:20 am-7:38 pm

1 stop10h 18m

$237

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Thu 1/8

7:15 am-1:30 pm

1 stop9h 15m

San Jose

Sat 1/17

6:20 am-7:38 pm

1 stop10h 18m

$237

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Mon 1/26

6:00 am-12:15 pm

1 stop9h 15m

San Francisco

Mon 1/26

11:25 pm-8:10 am

Nonstop5h 45m

$247

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Mon 1/12

8:50 pm-10:51 am

1 stop17h 01m

San Francisco

Tue 1/20

7:10 am-3:51 pm

Nonstop5h 41m

$251

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Fri 1/9

7:50 am-11:50 am

Nonstop7h 00m

San Francisco

Wed 1/14

5:55 am-9:23 pm

1 stop12h 28m

$260

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 60 results
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Best time to book a flight from Boston to San Francisco Bay Area

Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to San Francisco Bay Area

What is the cheapest month to book a flight from Boston to San Francisco Bay Area?

Currently, March is the cheapest month in which you can book a flight from Boston to San Francisco Bay Area (average of $103). Flying from Boston to San Francisco Bay Area in May is currently the most expensive (average of $179). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to XIH?

Find hourly flight availability from Boston to San Francisco Bay Area. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

It’s optimal to fly from Boston to San Francisco Bay Area in the evening. By choosing this option you can save up to 45% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Boston to San Francisco Bay Area?

Use this chart to determine the cheapest time to fly round-trip from Boston to San Francisco Bay Area. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Boston to San Francisco Bay Area flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing San Francisco Bay Area

Get insights into the airlines that provide service to San Francisco Bay Area. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco Bay Area. Reviews last updated December 18, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and United Airlines from Boston to San Francisco Bay Area have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,474 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Alaska Airlines
8.0
Very good
11,474 reviews
Alaska Airlines
8.0
Very good
11,474 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
Delta
7.9
Good
8,006 reviews
Alaska Airlines
8.0
Very good
11,474 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
United Airlines
7.4
Good
9,092 reviews
Alaska Airlines
8.0
Very good
11,474 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
American Airlines
7.2
Good
11,053 reviews
Alaska Airlines
8.0
Very good
11,474 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.
JetBlue
7.2
Good
2,895 reviews
Alaska Airlines
8.0
Very good
11,474 reviews

Comfort

7.8

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

BOS - HNL

The flight was awesome but a little long. I would prefer a flight with a layover. The amount of space available was minimal and a little uncomfortable for that long of a flight.

Related info for your journey

Find useful and relevant information for your journey from Boston to San Francisco Bay Area. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boston to San Francisco Bay Area?

    If you book a flight to San Francisco Bay Area from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston.

  • How popular is this Boston to San Francisco Bay Area flight route?

    This flight path from Boston Logan Intl to San Francisco Bay Area was viewed by 82 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Boston to San Francisco Bay Area?

    Departing from Boston to San Francisco Bay Area will take you 6h 51m. The distance from Boston to San Francisco Bay Area is about 2696 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Boston to San Francisco Bay Area one-way?

    One-way options have recently been found by users for as low as $72 on Frontier. Other airlines that offer cheap prices include JetBlue from $98 and Hawaiian Airlines from $108 one-way.

  • What are the most popular routes from Boston to San Francisco Bay Area?

    The most popular flight routes from Boston to San Francisco Bay Area are Boston Logan Intl - San Francisco, Boston Logan Intl - San Jose and Boston Logan Intl - Oakland.

  • What are the most reliable airlines from Boston to San Francisco Bay Area?

    No one likes to see their flight delayed. When booking a flight from Boston to San Francisco Bay Area consider choosing China Eastern (100%), Air China (89%) or Korean Air (88%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Boston to San Francisco Bay Area?

    On average you can expect to pay $947 for a flight from Boston to San Francisco Bay Area. The cheapest flight overall is $114 while the most popular route, (Boston Logan Intl - San Francisco) is currently priced at $190.

  • Can I find deals for flights from Boston to San Francisco Bay Area that include hotel bookings?

    Yes. In addition to deals on Boston to San Francisco Bay Area flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to San Francisco Bay Area?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to San Francisco Bay Area.

  • Can I find deals for business class flights from Boston to San Francisco Bay Area?

    Yes. Cheapflights offers flight deals from Boston to San Francisco Bay Area by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to San Francisco Bay Area?

    Currently, March is the cheapest month in which you can book a flight from Boston to San Francisco Bay Area (average of $103). Flying from Boston to San Francisco Bay Area in May is currently the most expensive (average of $179). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Boston to San Francisco Bay Area

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Top 9 airlines flying from Boston to San Francisco Bay Area

Discover the top 9 airlines that operate flights from Boston to San Francisco Bay Area. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$90Average$219FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$129Average$324FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$153Average$424FlexibilityNo cancel feeOn-time63%
DeltaCheapest$171Average$376FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$197Average$398FlexibilityNo cancel feeOn-time75%
JetBlueCheapest$198Average$342FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$202Average$334FlexibilityNo cancel feeOn-time83%
American AirlinesCheapest$217Average$472FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$228Average$396FlexibilityNo cancel feeOn-time69%

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