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$114+ Cheap flights from San Francisco to Boston (SFO - BOS)

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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BOS
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Find cheap flights from San Francisco to Boston with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
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Cheapflights Tip: The best prices from San Francisco to Boston Logan Intl are usually found in January or February, booked 50 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from San Francisco to Boston

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$203
(Jettzy)

One-way from

$114
(Southwest)

Popular in

June

Cheapest in

January

Average price

$356

Good round-trip deal

$296 or less

Good one-way deal

$164 or less
Provider with most accurate pricing for San Francisco-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Boston Logan Intl flights.
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From San Francisco to Boston Logan Intl
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One-way flight from San Francisco to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals
Price to beat on a round-trip flight from San Francisco to Boston Logan Intl.
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Price to beat on a one-way flight from San Francisco to Boston Logan Intl.
Search Deals

Find flight deals from San Francisco to Boston

Cheapest flights from San Francisco to Boston
Explore the most affordable flight options available from San Francisco to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This Jettzy deal was found by Cheapflights users on 3/26. 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 Jettzy is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/58:09 pmSFO - BOS
1 stop8h 46mHawaiian Airlines
Wed 5/77:47 pmBOS - SFO
Nonstop6h 47mHawaiian Airlines
Deal found 3/26$203
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 4/297:35 amSFO - BOS
Nonstop5h 40mAlaska Airlines
Thu 6/54:49 pmBOS - SFO
1 stop10h 04mAlaska Airlines
Deal found 3/27$207
This JetBlue deal was found by Cheapflights users on 3/27. 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.
Thu 4/31:00 pmSFO - BOS
1 stop8h 26mJetBlue
Wed 4/96:05 amBOS - SFO
Nonstop6h 39mJetBlue
Deal found 3/27$217
This Southwest deal was found by Cheapflights users on 3/27. 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 4/96:35 pmSFO - BOS
2 stops10h 15mSouthwest
Tue 4/155:00 amBOS - SFO
1 stop8h 05mSouthwest
Deal found 3/27$222
This Expedia deal was found by Cheapflights users on 3/28. 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.
Wed 4/2312:11 amSFO - BOS
1 stop8h 28mMultiple Airlines
Tue 4/297:47 pmBOS - SFO
Nonstop6h 47mMultiple Airlines
Deal found 3/28$223
This Delta deal was found by Cheapflights users on 3/27. 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 5/210:05 pmSFO - BOS
Nonstop5h 40mDelta
Thu 5/88:30 pmBOS - SFO
Nonstop6h 46mDelta
Deal found 3/27$228
This Flightnetwork deal was found by Cheapflights users on 3/27. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2312:11 amSFO - BOS
1 stop8h 28mFrontier
Sat 4/2612:48 pmBOS - SFO
1 stop12h 43mFrontier
Deal found 3/27$232
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Wed 5/146:30 amSFO - BOS
1 stop8h 04mUnited Airlines
Wed 5/216:05 amBOS - SFO
Nonstop6h 40mUnited Airlines
Deal found 3/27$245
This American Airlines deal was found by Cheapflights users on 3/28. 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.
Fri 7/410:38 pmSFO - BOS
1 stop10h 43mAmerican Airlines
Sat 7/125:54 amBOS - SFO
1 stop8h 19mAmerican Airlines
Deal found 3/28$279
This Sun Country Air deal was found by Cheapflights users on 3/27. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/106:07 pmSFO - BOS
1 stop13h 35mSun Country Air
Wed 4/1611:31 amBOS - SFO
1 stop8h 22mSun Country Air
Deal found 3/27$335

Cheapflights Fare Finder

Customize your flight search to find flights from San Francisco to Boston 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 March 28, 2025.
Use the filters below to find and compare flights from San Francisco to Boston that are best for you.

Fly from

San Francisco

Fly to

Boston

Route

Depart

Return

Price

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Mon 5/5

8:09 pm-7:55 am

1 stop8h 46m

Boston Logan Intl

Wed 5/7

7:47 pm-11:34 pm

Nonstop6h 47m

$203

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 4/29

7:35 am-4:15 pm

Nonstop5h 40m

Boston Logan Intl

Tue 6/3

7:59 pm-11:44 pm

Nonstop6h 45m

$207

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Thu 4/3

1:00 pm-12:26 am

1 stop8h 26m

Boston Logan Intl

Wed 4/9

6:05 am-9:44 am

Nonstop6h 39m

$217

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 4/9

6:35 pm-7:50 am

2 stops10h 15m

Boston Logan Intl

Tue 4/15

5:00 am-10:05 am

1 stop8h 05m

$222

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 4/23

12:11 am-11:39 am

1 stop8h 28m

Boston Logan Intl

Tue 4/29

7:47 pm-11:34 pm

Nonstop6h 47m

$223

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Fri 5/2

10:05 pm-6:45 am

Nonstop5h 40m

Boston Logan Intl

Thu 5/8

8:30 pm-12:16 am

Nonstop6h 46m

$228

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 4/23

12:11 am-11:39 am

1 stop8h 28m

Boston Logan Intl

Sat 4/26

12:48 pm-10:31 pm

1 stop12h 43m

$232

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 5/14

6:30 am-5:34 pm

1 stop8h 04m

Boston Logan Intl

Wed 5/21

6:05 am-9:45 am

Nonstop6h 40m

$245

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Thu 4/10

6:07 pm-10:42 am

1 stop13h 35m

Boston Logan Intl

Wed 4/16

11:31 am-4:53 pm

1 stop8h 22m

$335

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Mon 4/21

12:21 am-11:01 am

1 stop7h 40m

Boston Logan Intl

Fri 4/25

7:47 pm-11:34 pm

Nonstop6h 47m

$336

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 20 results
1
2

Compare providers for flights from San Francisco to Boston

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Boston in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*2 stars
FlightsMojoPrice Accuracy-Trust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Francisco-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Boston flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for San Francisco to Boston flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your San Francisco to Boston trip
Airports
SFO

Save time at SFO by using the AirTrain Red Line to quickly navigate between terminals after security.

Read more about SFOby Harriet Baskas
BOS

For a scenic arrival, consider BOS's water taxi service to downtown Boston, offering a unique view of the city.

Read more about BOSby Paul Rubio
Our travel experts
Paul Rubio

Paul Rubio

Expert on BOS

Paul Rubio

Paul Rubio

Travel journalist and photographer Paul Rubio is a Miami native (and current resident), who has lived in nine countries and traveled to 137. He is an expert in luxury travel, eco-travel, loyalty programs, hotels, airports and airlines. He is a contributing editor at AFAR, Condé Nast Traveler, LUXURY Magazine, and Palm Beach Illustrated.

Read more
Harriet Baskas

Harriet Baskas

Expert on SFO

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

Best time to book a flight from San Francisco to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from San Francisco 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 San Francisco to Boston

How far ahead should I book a flight from San Francisco to Boston?

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Boston. Price data was last updated on March 21, 2025.

The best time to book flights from San Francisco to Boston is 50 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from San Francisco to Boston (average of $218). Flying from San Francisco to Boston in July is currently the most expensive (average of $311). 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 SFO to BOS?

Find hourly flight availability from San Francisco to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

It’s typically best to fly out from San Francisco to Boston in the afternoon. Doing so could potentially save you 15% on the flight price compared to flying in the morning, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Boston. Price data was last updated on March 23, 2025.

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

Weekly flight availability from San Francisco to Boston

Explore weekly flight availability from San Francisco to Boston. 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 March 28, 2025.

The most flights from SFO to BOS are scheduled on a Friday (45 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (5 on average).

Rainfall in Boston by month

Plan your trip to Boston by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Boston ranges from 3.1 - 4.0 inches per month. March is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit Boston when rainfall is around 3.1 in.

Temperature in Boston by month

Plan your trip to Boston by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Boston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated March 28, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines and Delta from San Francisco to Boston by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,274 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

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
4,274 reviews
Southwest
8.1
Very good
4,274 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

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
9,798 reviews
Southwest
8.1
Very good
4,274 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

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
7,897 reviews
Southwest
8.1
Very good
4,274 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

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
2,336 reviews
Southwest
8.1
Very good
4,274 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

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
8,603 reviews
Southwest
8.1
Very good
4,274 reviews

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Crew

8.7

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 San Francisco to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from San Francisco to Boston?

    To fly from San Francisco to Boston, you need to book a flight from San Francisco (SFO) to Logan Intl (BOS). Nonstop flights to Boston Logan Intl from San Francisco take 5h 27m on average. When it comes time to book airfare, you have a few options: there are 21 outbound flights from San Francisco to Logan Intl offered by 10 different airlines.

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

    The San Francisco to Boston Logan Intl flight path was viewed by 61 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 flying from San Francisco to Boston round-trip?

    Currently priced at $203, Hawaiian Airlines will fly you from San Francisco to Boston and back. In addition to Hawaiian Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Alaska Airlines and JetBlue - these airlines can fly you to your destination from $207 and $221, respectively. Hawaiian Airlines is 46% cheaper than the average price of flights available within the next 90 days to this destination.

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

    To fly one-way, consider booking your trip with Southwest, which is currently one of the cheapest options available, starting at $114. Frontier flights start at $117 while deals on Hawaiian Airlines start at $118 one-way.

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

    Consider Virgin Atlantic (95%), Scandinavian Airlines (95%) or LATAM Airlines (93%) when booking your flight. These represent the most reliable airlines when flying from San Francisco to Boston.

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

    Looking at all options, your cheapest flight can be booked for $116. While the most popular route (San Francisco - Boston Logan Intl) can be booked for $189 on average our data indicates $993 when flying from San Francisco to Boston.

  • Where are the most common layover locations when flying from San Francisco to Boston?

    Flights departing from San Francisco and landing in Boston layover in New York most frequently.

  • What are some popular things to do or see while on a layover in New York?

    Times Square, New York City Center, and Madison Square Garden are the most popular attractions in New York if you're in need of something to do during your layover. Times Square, New York City Center, and Madison Square Garden can be visited by traveling about 13.6 mi, 13.6 mi, and 13.6 mi respectively from New York John F Kennedy Intl. Those on a layover in New York in need of a rental car can book one at New York John F Kennedy Intl for about $60.

  • Where are the least popular layover locations for San Francisco to Boston flights?

    Of the flights from San Francisco to Boston that have layovers, the fewest flights stop in Chicago.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco to Boston 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 San Francisco to Boston?

    Currently, January is the cheapest month in which you can book a flight from San Francisco to Boston (average of $218). Flying from San Francisco to Boston in July is currently the most expensive (average of $311). 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

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Warwick
Marlborough
Waltham
Cambridge
Framingham
Chestnut Hill
Seekonk
Randolph
Brockton
Lowell
West Yarmouth
Woburn
Somerville
Saco
Burlington
Smithfield
Salem
Chelsea
Seabrook
Brookline

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Top 9 airlines flying from San Francisco to Boston

Discover the top 9 airlines that operate flights from San Francisco to Boston. 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$103Average$155FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$120Average$372FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$143Average$363FlexibilityNo cancel feeOn-time85%
Sun Country AirCheapest$160Average$331FlexibilityNo cancel feeOn-time83%
DeltaCheapest$163Average$384FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$188Average$376FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$206Average$431FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$228Average$470FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$373Average$511FlexibilityNo cancel feeOn-time63%
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