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$130+ 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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BOS
ene. 22 — ene. 291
jue. 1/22
jue. 1/29
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco to Boston Logan Intl are usually found in January or February, booked 69 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap 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 diciembre 23, 2025.

This Super.com deal was found by Cheapflights users on 12/21. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/318:44 pmSFO - BOS
Nonstop5h 31mJetBlue
mar. 1/277:11 amBOS - SFO
Nonstop6h 59mJetBlue
Deal found 12/21$336
This Delta deal was found by Cheapflights users on 12/22. 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.
mié. 12/317:30 amSFO - BOS
Nonstop5h 40mDelta
mar. 1/275:40 pmBOS - SFO
Nonstop7h 02mDelta
Deal found 12/22$342
This United Airlines deal was found by Cheapflights users on 12/21. 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.
mié. 12/318:20 amSFO - BOS
1 stop7h 28mUnited Airlines
mar. 1/2710:56 amBOS - SFO
Nonstop6h 55mUnited Airlines
Deal found 12/21$352
This Southwest deal was found by Cheapflights users on 12/21. 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.
mié. 12/3112:15 pmSFO - BOS
1 stop7h 30mSouthwest
mar. 1/276:25 amBOS - SFO
1 stop10h 10mSouthwest
Deal found 12/21$362
This American Airlines deal was found by Cheapflights users on 12/20. 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.
lun. 12/299:37 pmSFO - BOS
1 stop9h 20mAmerican Airlines
sáb. 1/108:50 amBOS - SFO
1 stop10h 44mAmerican Airlines
Deal found 12/20$382
This JetBlue deal was found by Cheapflights users on 12/20. 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. 12/319:44 pmSFO - BOS
1 stop10h 14mJetBlue
lun. 1/54:40 pmBOS - SFO
Nonstop6h 53mJetBlue
Deal found 12/20$400
This Super.com deal was found by Cheapflights users on 12/22. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/293:22 pmSFO - BOS
Nonstop5h 33mJetBlue
mié. 1/77:11 amBOS - SFO
Nonstop6h 59mJetBlue
Deal found 12/22$415
This Delta deal was found by Cheapflights users on 12/19. 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.
lun. 12/297:30 amSFO - BOS
Nonstop5h 40mDelta
mié. 1/75:40 pmBOS - SFO
Nonstop7h 02mDelta
Deal found 12/19$422
This Delta deal was found by Cheapflights users on 12/19. 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.
vie. 12/261:20 pmSFO - BOS
Nonstop5h 40mDelta
jue. 1/88:50 pmBOS - SFO
1 stop17h 00mDelta
Deal found 12/19$426

Find 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 diciembre 23, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$217
(JetBlue)

One-way from

$130
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$477

Good round-trip deal

$300 or less

Good one-way deal

$192 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.
Search Deals
From San Francisco to Boston Logan Intl
Search Deals
One-way flight from San Francisco to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($5 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 December 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

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 diciembre 23, 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

mar. 1/20

8:29 pm-5:00 am

Nonstop5h 31m

Boston Logan Intl

sáb. 1/24

7:11 am-11:10 am

Nonstop6h 59m

$217

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

sáb. 2/14

4:10 pm-12:49 am

Nonstop5h 39m

Boston Logan Intl

mié. 2/18

8:00 am-12:00 pm

Nonstop7h 00m

$217

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

mar. 1/20

7:10 am-3:51 pm

Nonstop5h 41m

Boston Logan Intl

sáb. 1/24

5:40 pm-9:42 pm

Nonstop7h 02m

$217

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

mar. 1/27

12:20 pm-8:58 pm

Nonstop5h 38m

Boston Logan Intl

lun. 2/2

3:05 pm-6:55 pm

Nonstop6h 50m

$217

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

lun. 1/12

1:50 pm-10:29 pm

Nonstop5h 39m

Boston Logan Intl

mié. 1/14

7:11 am-11:10 am

Nonstop6h 59m

$217

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

mié. 1/21

7:00 am-5:39 pm

1 stop7h 39m

Boston Logan Intl

sáb. 1/24

7:00 am-2:00 pm

1 stop10h 00m

$236

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

mar. 1/20

9:16 am-5:39 pm

1 stop29h 23m

Boston Logan Intl

vie. 1/23

5:20 pm-9:11 am

1 stop18h 51m

$236

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

mar. 1/27

7:00 am-5:39 pm

1 stop7h 39m

Boston Logan Intl

lun. 2/2

4:20 pm-10:47 pm

1 stop9h 27m

$236

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

jue. 2/5

11:20 pm-10:36 am

1 stop8h 16m

Boston Logan Intl

dom. 2/22

6:00 am-9:58 am

Nonstop6h 58m

$237

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

mié. 1/21

10:50 am-12:13 am

1 stop10h 23m

Boston Logan Intl

mié. 1/28

10:00 am-1:55 pm

Nonstop6h 55m

$245

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Showing 1-10 of 22 results
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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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust 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 CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on San Francisco-Boston flight deals on Cheapflights vs. CheapOair >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 CheapOair the most. CheapOair 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.

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 December 19, 2025.

The best time to book flights from San Francisco to Boston is 69 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, December is the cheapest month in which you can book a flight from San Francisco to Boston (average of $118). Flying from San Francisco to Boston in June is currently the most expensive (average of $219). 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 diciembre 23, 2025.

It’s typically best to fly out from San Francisco to Boston in the afternoon. Doing so could potentially save you 13% 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 December 20, 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 at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for San Francisco to Boston flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
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 clearing security.

Read more about SFOBy Harriet Baskas
BOS

For a scenic arrival, consider the water taxi from BOS to Boston’s Long Wharf or Seaport District.

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

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 diciembre 23, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and Hawaiian Airlines from San Francisco to Boston. 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.
Alaska Airlines
8.0
Very good
11,505 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,505 reviews
Alaska Airlines
8.0
Very good
11,505 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Delta
7.9
Good
8,013 reviews
Alaska Airlines
8.0
Very good
11,505 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Hawaiian Airlines
7.8
Good
2,822 reviews
Alaska Airlines
8.0
Very good
11,505 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,102 reviews
Alaska Airlines
8.0
Very good
11,505 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
JetBlue
7.2
Good
2,896 reviews
Alaska Airlines
8.0
Very good
11,505 reviews

Entertainment

7.0

Food

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

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 31m on average. When it comes time to book airfare, you have a few options: there are 36 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 56 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 San Francisco to Boston?

    For as low as $217, JetBlue can have you in Boston from San Francisco in 5h 31m. San Francisco and Boston are separated by a distance of 2696 mi. Most flights are nonstop.

  • What are the cheapest airlines flying from San Francisco to Boston round-trip?

    Currently priced at $93, Frontier will fly you from San Francisco to Boston and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Hawaiian Airlines and Delta - these airlines can fly you to your destination from $129 and $140, respectively. Frontier is 75% 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 Frontier, which is currently one of the cheapest options available, starting at $85. Southwest flights start at $105 while deals on JetBlue start at $114 one-way.

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

    Consider ITA Airways (100%), Air China (94%) or Scandinavian Airlines (90%) 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 $129. While the most popular route (San Francisco - Boston Logan Intl) can be booked for $192 on average, our data indicates $1,134 when flying from San Francisco to Boston.

  • 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, December is the cheapest month in which you can book a flight from San Francisco to Boston (average of $118). Flying from San Francisco to Boston in June is currently the most expensive (average of $219). 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 Boston?

Book flights to Boston if you plan to visit one of these locations
Cambridge
Medford
Hampton Beach
Watertown
Seabrook
Seekonk
Brockton
Cranston
Lincoln
Lowell
Smithfield
Peabody
Quincy
York Beach
Warwick
Londonderry
Swansea
Old Orchard Beach
Waltham
Chelsea

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Francisco to Boston

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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 diciembre 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$100Average$240FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$144Average$361FlexibilityNo cancel feeOn-time85%
Sun Country AirCheapest$160Average$369FlexibilityNo cancel feeOn-time83%
DeltaCheapest$182Average$383FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$186Average$402FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$208Average$389FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$230Average$444FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$237Average$405FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$258Average$408FlexibilityNo cancel feeOn-time71%

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