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$119+ 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 5/31. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BOS
May 4 — May 111
Sun 5/4
Sun 5/11
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

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from San Francisco to Boston Logan Intl are usually found in January or February, booked 64 days in advance, depart on a Tuesday or Wednesday 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 April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$232
(JetBlue)

One-way from

$119
(JetBlue)

Popular in

June

Cheapest in

January

Average price

$403

Good round-trip deal

$320 or less

Good one-way deal

$157 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 ($51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals
Price to beat on a round-trip flight from San Francisco to Boston Logan Intl.
Search Deals
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 April 29, 2025.

This JetBlue deal was found by Cheapflights users on 4/28. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/246:00 amSFO - BOS
Nonstop5h 45mJetBlue
Sat 5/245:59 pmBOS - SFO
Nonstop6h 49mJetBlue
Deal found 4/28$232
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Tue 4/2910:07 pmSFO - BOS
1 stop23h 37mFrontier
Wed 5/148:00 amBOS - SFO
1 stop32h 15mFrontier
Deal found 4/29$233
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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.
Sat 5/318:00 amSFO - BOS
1 stop19h 10mAlaska Airlines
Sat 6/74:49 pmBOS - SFO
1 stop10h 04mAlaska Airlines
Deal found 4/29$236
This Expedia deal was found by Cheapflights users on 4/29. 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.
Thu 5/2910:26 pmSFO - BOS
1 stop8h 29mMultiple Airlines
Tue 6/34:49 pmBOS - SFO
1 stop10h 04mMultiple Airlines
Deal found 4/29$242
This flugladen.de deal was found by Cheapflights users on 4/29. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/316:49 pmSFO - BOS
1 stop9h 31mHawaiian Airlines
Sat 6/74:49 pmBOS - SFO
1 stop10h 04mHawaiian Airlines
Deal found 4/29$244
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/207:00 amSFO - BOS
Nonstop5h 45mDelta
Fri 5/308:30 pmBOS - SFO
Nonstop6h 46mDelta
Deal found 4/28$248
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Mon 6/212:21 amSFO - BOS
1 stop7h 45mAmerican Airlines
Wed 6/115:00 amBOS - SFO
1 stop9h 33mAmerican Airlines
Deal found 4/29$257
This Sun Country Air deal was found by Cheapflights users on 4/28. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:03 pmSFO - BOS
1 stop13h 38mSun Country Air
Thu 10/211:45 amBOS - SFO
1 stop8h 30mSun Country Air
Deal found 4/28$325
This United Airlines deal was found by Cheapflights users on 4/29. 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 5/2012:43 amSFO - BOS
1 stop10h 59mUnited Airlines
Wed 5/288:00 amBOS - SFO
Nonstop6h 31mUnited Airlines
Deal found 4/29$347
This Southwest deal was found by Cheapflights users on 4/29. 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.
Sat 5/317:20 amSFO - BOS
1 stop11h 55mSouthwest
Sat 8/166:15 amBOS - SFO
2 stops10h 30mSouthwest
Deal found 4/29$349

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 April 29, 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

Sat 5/24

6:00 am-2:45 pm

Nonstop5h 45m

Boston Logan Intl

Sat 5/24

5:59 pm-9:48 pm

Nonstop6h 49m

$232

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sun 5/18

9:59 pm-12:44 am

1 stop23h 45m

Boston Logan Intl

Fri 5/30

12:01 pm-10:43 pm

1 stop13h 42m

$233

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 6/3

10:19 pm-10:20 am

1 stop9h 01m

Boston Logan Intl

Fri 6/6

7:59 pm-11:44 pm

Nonstop6h 45m

$234

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 5/31

8:00 am-6:10 am

1 stop19h 10m

Boston Logan Intl

Sat 6/7

4:49 pm-11:53 pm

1 stop10h 04m

$236

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 5/20

7:00 am-3:48 pm

Nonstop5h 48m

Boston Logan Intl

Wed 5/21

8:00 am-11:44 am

Nonstop6h 44m

$237

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sun 6/1

7:00 am-3:49 pm

Nonstop5h 49m

Boston Logan Intl

Wed 6/11

7:00 am-10:49 am

Nonstop6h 49m

$243

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 5/20

7:00 am-3:45 pm

Nonstop5h 45m

Boston Logan Intl

Sun 5/25

7:55 am-11:40 am

Nonstop6h 45m

$248

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Mon 6/2

12:21 am-11:06 am

1 stop7h 45m

Boston Logan Intl

Wed 6/11

5:00 am-11:33 am

1 stop9h 33m

$257

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sun 9/28

6:03 pm-10:41 am

1 stop13h 38m

Boston Logan Intl

Thu 10/2

11:45 am-5:15 pm

1 stop8h 30m

$325

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 5/31

7:20 am-10:15 pm

1 stop11h 55m

Boston Logan Intl

Sat 8/16

6:15 am-1:45 pm

2 stops10h 30m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
FlightsMojoPrice Accuracy-Trust Score*3 stars
PricelinePrice Accuracy2 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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 eDreams the most. eDreams 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 April 25, 2025.

The best time to book flights from San Francisco to Boston is 64 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 April 29, 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 30, 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 April 29, 2025.

The most flights from SFO to BOS are scheduled on a Monday (48 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (27 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 April 29, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest 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.
Alaska Airlines
8.0
Very good
9,961 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Comfort

7.9

Entertainment

7.1

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
9,961 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Comfort

7.9

Entertainment

7.1

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
4,295 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Comfort

7.9

Entertainment

7.1

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
7,929 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Comfort

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,402 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Comfort

7.9

Entertainment

7.1

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Comfort

7.9

Entertainment

7.1

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 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 38m on average. When it comes time to book airfare, you have a few options: there are 37 outbound flights from San Francisco to Logan Intl offered by 9 different airlines.

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

    The San Francisco to Boston Logan Intl flight path was viewed by 44 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 $232, JetBlue will fly you from San Francisco to Boston and back. In addition to JetBlue, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Frontier and Alaska Airlines - these airlines can fly you to your destination from $233 and $236, respectively. JetBlue is 38% 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 JetBlue, which is currently one of the cheapest options available, starting at $119. Frontier flights start at $120 while deals on Hawaiian Airlines start at $126 one-way.

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

    Consider American Airlines (100%), Qatar Airways (100%) or Fiji Airways (100%) 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 $118. While the most popular route (San Francisco - Boston Logan Intl) can be booked for $229 on average our data indicates $938 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 $70.

  • 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
Marlborough
Warwick
Cambridge
Waltham
Framingham
Chestnut Hill
Randolph
Brockton
Lowell
Woburn
Somerville
York Beach
Saco
Burlington
West Yarmouth
Smithfield
Lincoln
Salem
Chelsea
Seabrook

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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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$103Average$168FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$116Average$378FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$144Average$369FlexibilityNo cancel feeOn-time85%
Sun Country AirCheapest$160Average$342FlexibilityNo cancel feeOn-time83%
DeltaCheapest$167Average$380FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$194Average$374FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$222Average$421FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$228Average$463FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$373Average$511FlexibilityNo cancel feeOn-time63%

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