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San Francisco Bay Area

$109+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SFO
Jul 1 — Jul 81
Tue 7/1
Tue 7/8
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 June 26, 2025.

Round-trip from

$247
(Alaska Airlines)

One-way from

$109
(Southwest)

Popular in

December

Cheapest in

September

Average price

$393
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. 2% potential increase in price ($9 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 26, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/25. 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 9/238:23 pmBOS - SFO
Nonstop6h 29mAlaska Airlines
Tue 10/1411:22 amSFO - BOS
1 stop9h 37mAlaska Airlines
Deal found 6/25$247
This Delta deal was found by Cheapflights users on 6/25. 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.
Fri 8/158:59 pmBOS - SFO
Nonstop6h 47mDelta
Tue 8/197:05 amSFO - BOS
Nonstop5h 49mDelta
Deal found 6/25$248
This Trip.com deal was found by Cheapflights users on 6/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/188:01 amBOS - SFO
1 stop9h 00mHawaiian Airlines
Sat 10/257:11 amSFO - BOS
Nonstop5h 49mHawaiian Airlines
Deal found 6/24$252
This JetBlue deal was found by Cheapflights users on 6/26. 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.
Sun 8/33:59 pmBOS - SFO
Nonstop6h 44mJetBlue
Sun 8/311:25 pmSFO - BOS
Nonstop5h 38mJetBlue
Deal found 6/26$254
This Southwest deal was found by Cheapflights users on 6/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/192:50 pmBOS - SJC
2 stops10h 30mSouthwest
Sat 8/238:55 pmSJC - BOS
1 stop9h 50mSouthwest
Deal found 6/26$256
This Alaska Airlines deal was found by Cheapflights users on 6/25. 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.
Wed 9/37:20 amBOS - OAK
1 stop9h 16mAlaska Airlines
Tue 9/911:01 amOAK - BOS
1 stop10h 22mAlaska Airlines
Deal found 6/25$257
This Southwest deal was found by Cheapflights users on 6/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/127:05 amBOS - SFO
1 stop10h 35mSouthwest
Wed 8/135:55 amSFO - BOS
1 stop7h 40mSouthwest
Deal found 6/25$257
This American Airlines deal was found by Cheapflights users on 6/25. 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.
Wed 8/206:15 amBOS - SFO
1 stop9h 41mAmerican Airlines
Wed 8/276:28 amSFO - BOS
1 stop9h 25mAmerican Airlines
Deal found 6/25$260
This Mytrip deal was found by Cheapflights users on 6/23. 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.
Wed 7/166:00 amBOS - SJC
3 stops31h 36mSpirit Airlines
Wed 7/234:22 pmSJC - BOS
2 stops13h 15mSpirit Airlines
Deal found 6/23$260
This Alaska Airlines deal was found by Cheapflights users on 6/26. 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.
Thu 8/285:08 pmBOS - SJC
1 stop8h 30mAlaska Airlines
Sun 8/317:02 pmSJC - BOS
1 stop7h 58mAlaska Airlines
Deal found 6/26$261
This Southwest deal was found by Cheapflights users on 6/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/134:45 pmBOS - OAK
1 stop8h 45mSouthwest
Wed 8/2010:35 amOAK - BOS
2 stops9h 35mSouthwest
Deal found 6/26$262
This American Airlines deal was found by Cheapflights users on 6/24. 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.
Wed 8/272:33 pmBOS - SJC
1 stop9h 31mAmerican Airlines
Sun 9/76:00 amSJC - BOS
1 stop11h 05mAmerican Airlines
Deal found 6/24$264

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 June 26, 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

Tue 9/23

8:23 pm-11:52 pm

Nonstop6h 29m

San Francisco

Tue 10/14

11:22 am-11:59 pm

1 stop9h 37m

$247

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Fri 8/15

8:59 pm-12:46 am

Nonstop6h 47m

San Francisco

Tue 8/19

7:05 am-3:54 pm

Nonstop5h 49m

$248

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sun 8/10

8:19 pm-11:59 pm

Nonstop6h 40m

San Francisco

Sun 8/17

9:28 pm-6:10 am

Nonstop5h 42m

$253

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sun 8/3

3:59 pm-7:43 pm

Nonstop6h 44m

San Francisco

Sun 8/3

11:25 pm-8:03 am

Nonstop5h 38m

$254

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Tue 8/19

2:50 pm-10:20 pm

2 stops10h 30m

San Jose

Sat 8/23

8:55 pm-9:45 am

1 stop9h 50m

$256

BostonOakland

BOS - OAK

BOSOAK

Boston Logan Intl

Wed 9/3

7:20 am-1:36 pm

1 stop9h 16m

Oakland

Tue 9/9

11:01 am-12:23 am

1 stop10h 22m

$257

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Tue 8/12

4:45 pm-10:25 pm

1 stop8h 40m

San Francisco

Wed 9/10

9:05 pm-10:00 am

1 stop9h 55m

$257

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 8/20

6:15 am-12:56 pm

1 stop9h 41m

San Francisco

Wed 8/27

6:28 am-6:53 pm

1 stop9h 25m

$260

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Wed 7/16

6:00 am-10:36 am

3 stops31h 36m

San Jose

Wed 7/23

4:22 pm-8:37 am

2 stops13h 15m

$260

BostonSan Jose

BOS - SJC

BOSSJC

Boston Logan Intl

Thu 8/28

5:08 pm-10:38 pm

1 stop8h 30m

San Jose

Sun 8/31

7:02 pm-6:00 am

1 stop7h 58m

$261

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/26

Showing 1-10 of 53 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, 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 $360). 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 June 26, 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.

Weekly flight availability from Boston to San Francisco Bay Area

Explore weekly flight availability from Boston to San Francisco Bay Area. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 26, 2025.

The most flights from BOS to zzXIH are scheduled on a Thursday (62 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (34 on average).

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 June 26, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta 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
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,276 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,964 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,522 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,838 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 69 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 $109 on Southwest. Other airlines that offer cheap prices include Spirit Airlines from $122 and Hawaiian Airlines from $125 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 Qantas Airways (93%), Air New Zealand (90%) or Virgin Australia (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 $880 for a flight from Boston to San Francisco Bay Area. The cheapest flight overall is $129 while the most popular route, (Boston Logan Intl - San Francisco) is currently priced at $230.

  • 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 $360). 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.

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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 June 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$84Average$209FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$99Average$334FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$129Average$324FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$149Average$451FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$149Average$467FlexibilityNo cancel feeOn-time71%
Sun Country AirCheapest$150Average$332FlexibilityNo cancel feeOn-time83%
Spirit AirlinesCheapest$164Average$277FlexibilityNo cancel feeOn-time65%
DeltaCheapest$166Average$370FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$227Average$417FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$227Average$394FlexibilityNo cancel feeOn-time69%

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