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$87+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SFO
mar. 13 — mar. 201
jue. 3/13
jue. 3/20
1 adult, Economy
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Cheap 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 marzo 8, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$202
(Cheapflightsfares)

One-way from

$87
(CheapOair)

Popular in

June

Cheapest in

September

Average price

$336
Provider with most accurate pricing for Boston Logan Intl-San Francisco flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-San Francisco flights.
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From Boston Logan Intl to San Francisco Bay Area
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One-way flight from Boston Logan Intl to San Francisco Bay Area
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Highest demand for flights based on searches. 8% potential increase in price ($34 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find 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 marzo 8, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/216:00 amBOS - SFO
1 stop9h 58mFrontier
dom. 5/2510:19 pmSFO - BOS
1 stop8h 57mFrontier
Deal found 3/7$202
This Expedia deal was found by Cheapflights users on 3/6. 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.
mié. 5/76:00 amBOS - SFO
1 stop9h 58mMultiple Airlines
dom. 5/117:35 amSFO - BOS
Nonstop5h 40mMultiple Airlines
Deal found 3/6$204
This SmartFares deal was found by Cheapflights users on 3/5. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/207:59 pmBOS - SFO
Nonstop6h 58mAlaska Airlines
mié. 3/267:44 amSFO - BOS
Nonstop5h 43mAlaska Airlines
Deal found 3/5$211
This CheapOair deal was found by Cheapflights users on 3/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/106:00 amBOS - OAK
2 stops20h 39mSpirit Airlines
mar. 5/137:48 pmOAK - BOS
2 stops12h 16mSpirit Airlines
Deal found 3/6$212
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/207:59 pmBOS - SFO
Nonstop6h 58mHawaiian Airlines
mié. 3/267:44 amSFO - BOS
Nonstop5h 43mHawaiian Airlines
Deal found 3/6$226
This United Airlines deal was found by Cheapflights users on 3/6. 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.
mar. 3/254:41 pmBOS - SFO
1 stop9h 10mUnited Airlines
mié. 3/2611:25 pmSFO - BOS
Nonstop5h 37mUnited Airlines
Deal found 3/6$233
This Delta deal was found by Cheapflights users on 3/6. 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.
mar. 3/255:20 pmBOS - SFO
Nonstop6h 49mDelta
lun. 3/317:25 amSFO - BOS
Nonstop5h 33mDelta
Deal found 3/6$242
This JetBlue deal was found by Cheapflights users on 3/6. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/3010:30 amBOS - SFO
1 stop11h 22mJetBlue
jue. 5/83:55 pmSFO - BOS
1 stop11h 44mJetBlue
Deal found 3/6$247
This American Airlines deal was found by Cheapflights users on 3/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/111:47 amBOS - SFO
1 stop10h 49mAmerican Airlines
lun. 4/712:21 amSFO - BOS
1 stop7h 40mAmerican Airlines
Deal found 3/6$250
This Mytrip deal was found by Cheapflights users on 3/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/258:00 amBOS - SJC
2 stops32h 34mSpirit Airlines
jue. 3/271:41 pmSJC - BOS
2 stops28h 35mSpirit Airlines
Deal found 3/7$255
This Alaska Airlines deal was found by Cheapflights users on 3/6. 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.
lun. 4/74:49 pmBOS - SJC
1 stop8h 59mAlaska Airlines
sáb. 4/1211:48 amSJC - BOS
1 stop24h 51mAlaska Airlines
Deal found 3/6$260
This American Airlines deal was found by Cheapflights users on 3/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/27:25 amBOS - SJC
1 stop9h 26mAmerican Airlines
lun. 4/77:20 pmSJC - BOS
1 stop7h 27mAmerican Airlines
Deal found 3/7$267

Find flights from Boston to San Francisco Bay Area within your budget

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 marzo 8, 2025.

Fly from

Boston

Fly to

San Francisco Bay Area

Route

Depart

Return

Price

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

mié. 5/21

6:00 am-12:58 pm

1 stop9h 58m

San Francisco

dom. 5/25

10:19 pm-10:16 am

1 stop8h 57m

$202

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

mié. 5/7

6:00 am-12:58 pm

1 stop9h 58m

San Francisco

dom. 5/11

7:35 am-4:15 pm

Nonstop5h 40m

$204

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

jue. 3/20

7:59 pm-11:57 pm

Nonstop6h 58m

San Francisco

mié. 3/26

7:44 am-4:27 pm

Nonstop5h 43m

$211

BostonOakland

BOS - OAK

BOSOAK

Boston Logan Intl

sáb. 5/10

6:00 am-11:39 pm

2 stops20h 39m

Oakland

mar. 5/13

7:48 pm-11:04 am

2 stops12h 16m

$212

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

jue. 3/20

7:59 pm-11:57 pm

Nonstop6h 58m

San Francisco

mié. 3/26

7:44 am-4:27 pm

Nonstop5h 43m

$226

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

jue. 5/1

7:49 pm-11:41 pm

Nonstop6h 52m

San Francisco

lun. 5/19

9:52 pm-6:40 am

Nonstop5h 48m

$227

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

mar. 3/25

4:41 pm-10:51 pm

1 stop9h 10m

San Francisco

mié. 3/26

11:25 pm-8:02 am

Nonstop5h 37m

$233

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

vie. 5/2

8:19 pm-12:05 am

Nonstop6h 46m

San Francisco

vie. 5/9

10:45 pm-12:25 pm

1 stop10h 40m

$237

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

mar. 4/1

11:47 am-7:36 pm

1 stop10h 49m

San Francisco

lun. 4/7

12:21 am-11:01 am

1 stop7h 40m

$250

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

mar. 3/25

8:00 am-1:34 pm

2 stops32h 34m

San Jose

jue. 3/27

1:41 pm-9:16 pm

2 stops28h 35m

$255

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

Showing 1-10 of 54 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.

Travel insights for flights from Boston to San Francisco Bay Area

Get recent, data-driven insights about flights from Boston to San Francisco Bay Area including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Boston to San Francisco Bay Area (average of $276). Flying from Boston to San Francisco Bay Area in June is currently the most expensive (average of $402). 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 marzo 8, 2025.

When flying from Boston to San Francisco Bay Area, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in San Francisco Bay Area by month

Plan your trip to San Francisco Bay Area by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco Bay Area ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco Bay Area when rainfall is around 0.0 in.

Temperature in San Francisco Bay Area by month

Plan your trip to San Francisco Bay Area by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco Bay Area, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 marzo 8, 2025.
To help decide which airline to fly from Boston to San Francisco Bay Area, see what other customers have to say about Southwest, Alaska Airlines and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,314 reviews

Boarding

8.2

Overall

8.1

Food

7.1

Crew

8.7

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest
8.1
Very good
4,314 reviews
Southwest
8.1
Very good
4,314 reviews

Boarding

8.2

Overall

8.1

Food

7.1

Crew

8.7

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Alaska Airlines
8.0
Very good
9,716 reviews
Southwest
8.1
Very good
4,314 reviews

Boarding

8.2

Overall

8.1

Food

7.1

Crew

8.7

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Delta
8.0
Very good
8,024 reviews
Southwest
8.1
Very good
4,314 reviews

Boarding

8.2

Overall

8.1

Food

7.1

Crew

8.7

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Hawaiian Airlines
7.9
Good
2,316 reviews
Southwest
8.1
Very good
4,314 reviews

Boarding

8.2

Overall

8.1

Food

7.1

Crew

8.7

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

United Airlines
7.4
Good
8,649 reviews
Southwest
8.1
Very good
4,314 reviews

Boarding

8.2

Overall

8.1

Food

7.1

Crew

8.7

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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 73 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • 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 $87 on Spirit Airlines. Other airlines that offer cheap prices include American Airlines from $109 and Frontier from $111 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 - Oakland and Boston Logan Intl - San Jose.

  • 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 Korean Air (100%), Air China (100%) or Alaska Airlines (90%) 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 $939 for a flight from Boston to San Francisco Bay Area. The cheapest flight overall is $98 while the most popular route, (Boston Logan Intl - San Francisco) is currently priced at $199.

  • 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, January is the cheapest month in which you can book a flight from Boston to San Francisco Bay Area (average of $276). Flying from Boston to San Francisco Bay Area in June is currently the most expensive (average of $402). 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

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Boston to San Francisco Bay Area

Discover the top 10 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 marzo 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$83Average$147FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$99Average$345FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$131Average$463FlexibilityNo cancel feeOn-time71%
Sun Country AirCheapest$150Average$336FlexibilityNo cancel feeOn-time83%
Hawaiian AirlinesCheapest$154Average$435FlexibilityNo cancel feeOn-time85%
DeltaCheapest$154Average$391FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$164Average$277FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$175Average$477FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$227Average$415FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$228Average$472FlexibilityNo cancel feeOn-time63%
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