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Cheap flights from San Francisco to Boston from $181

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BOS
30 Mar — 6 Apr1
1 adult

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 Tuesday or Thursday and return on a Tuesday

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 25 March 2025.

Round-trip from

$345

One-way from

$181

Popular in

June

Cheapest in

January

Average price

$566

Good one-way deal

$311 or less
Delta
  • Delta
  • 30/4-3/5
  • Nonstop
  • 12h 35m total
  • San Francisco to Boston
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JetBlue
  • JetBlue
  • 1/4
  • Nonstop
  • 5h 49m total
  • San Francisco to Boston
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Highest demand for flights based on searches. 12% potential increase in price ($139 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease ($25 potential savings vs. average return price).
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Average for round-trip flights in March 2025
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Price to beat on a one-way flight from San Francisco to Boston Logan Intl.
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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 25 March 2025.

Wed 30/413:05SFO - BOS
Nonstop5h 36mDelta
Sat 3/507:50BOS - SFO
Nonstop6h 59mDelta
Deal found 25/3$345
Mon 14/408:25SFO - BOS
Nonstop5h 49mJetBlue
Mon 14/420:35BOS - SFO
Nonstop6h 48mJetBlue
Deal found 24/3$352
Wed 30/419:55SFO - BOS
1 stop9h 00mAlaska Airlines
Tue 3/607:00BOS - SFO
Nonstop6h 49mAlaska Airlines
Deal found 24/3$393
Tue 27/520:47SFO - BOS
Nonstop5h 53mHawaiian Airlines
Tue 3/607:00BOS - SFO
Nonstop6h 49mHawaiian Airlines
Deal found 24/3$417
Wed 20/818:50SFO - BOS
1 stop9h 28mUnited Airlines
Sun 24/806:00BOS - SFO
Nonstop6h 31mUnited Airlines
Deal found 24/3$422
Wed 9/406:00SFO - BOS
2 stops10h 10mSouthwest
Mon 14/405:45BOS - SFO
1 stop11h 25mSouthwest
Deal found 24/3$484

Cheapflights Fare Finder

Customise 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 647,157 searches. Data last updated 25 March 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

Wed 30/4

13:05-21:41

Nonstop5h 36m

Boston Logan Intl

Sat 3/5

07:50-11:49

Nonstop6h 59m

$345

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Mon 14/4

08:25-17:14

Nonstop5h 49m

Boston Logan Intl

Mon 14/4

20:35-00:23

Nonstop6h 48m

$352

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sat 3/5

18:25-05:39

1 stop8h 14m

Boston Logan Intl

Tue 6/5

14:00-17:44

Nonstop6h 44m

$361

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 3/6

20:47-05:40

Nonstop5h 53m

Boston Logan Intl

Fri 29/8

20:23-23:52

Nonstop6h 29m

$394

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 27/5

20:47-05:40

Nonstop5h 53m

Boston Logan Intl

Tue 3/6

07:00-10:49

Nonstop6h 49m

$417

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Wed 9/4

06:00-19:10

2 stops10h 10m

Boston Logan Intl

Mon 14/4

05:45-14:10

1 stop11h 25m

$484

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 1/4

10:50-19:39

Nonstop5h 49m

$181

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Tue 22/4

07:35-16:15

Nonstop5h 40m

$189

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Sun 4/5

22:05-06:45

Nonstop5h 40m

$207

San FranciscoBoston

SFO - BOS

SFOBOS

San Francisco

Thu 28/8

18:50-07:18

1 stop9h 28m

$215

Flights are sorted by cheapest return flights first.

Deals found on 24/3

Showing 1-10 of 13 results
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2

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 return 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 return flight from San Francisco to Boston. Price data was last updated on 21 March 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, February is the cheapest month in which you can book a flight from San Francisco to Boston (average of $1,183). Flying from San Francisco to Boston in December is currently the most expensive (average of $1,631). 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 25 March 2025.

It’s optimal to fly from San Francisco to Boston at midday. By choosing this option you can save up to 39% on the cost of your flight, compared to a flight in the afternoon.

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 25 March 2025.

The most flights from SFO to BOS are scheduled on a Friday (49 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (31 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 78.0 - 101.0 inches per month. March is typically the wettest month, when rainfall can reach 101.0 mm. July is typically the driest time to visit Boston when rainfall is around 78.0 mm.

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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).

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 25 March 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. 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
9,789 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very Good
9,789 reviews
Alaska Airlines
8.0
Very Good
9,789 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very Good
4,272 reviews
Alaska Airlines
8.0
Very Good
9,789 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very Good
7,890 reviews
Alaska Airlines
8.0
Very Good
9,789 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,330 reviews
Alaska Airlines
8.0
Very Good
9,789 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very Good
9,789 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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?

    Booking a flight from San Francisco (SFO) to Boston Logan Intl (BOS) is your only option if you wish to fly from San Francisco to Boston. On a typical day, there are 40 flights from San Francisco to Logan Intl, all of which are around 5h 49m for a nonstop flight. You can also purchase a plane ticket from 1 airline when you book a flight from San Francisco to Boston.

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

    The San Francisco to Boston Logan Intl flight path was viewed by 10 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 $345, Delta will fly you from San Francisco to Boston and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from JetBlue and United Airlines - these airlines can fly you to your destination from $352 and $361, respectively. Delta is 42% 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?

    The cheapet airlines for a one-way flight from San Francisco to Boston are JetBlue ($181), Alaska Airlines ($189), and Delta ($207).

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

    No one likes to see their flight delayed. When booking a flight from San Francisco to Boston consider choosing Virgin Atlantic(95%), Scandinavian Airlines(95%) or LATAM Airlines(93%), as they are the most reliable in getting you off to your destination on time.

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

    The cheapest flight price from San Francisco to Boston is $311. On average you can expect to pay $315. The most popular route, (San Francisco - Boston Logan Intl), can usually be booked for $361.

  • 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 holiday 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, February is the cheapest month in which you can book a flight from San Francisco to Boston (average of $1,183). Flying from San Francisco to Boston in December is currently the most expensive (average of $1,631). 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

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Revere

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Alternative routes for San Francisco to Boston

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Boston flights

Top airline flying from San Francisco to Boston

Discover the top airline 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 647,157 searches. Data last updated 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$296Average$479FlexibilityNo cancel feeOn-time62%
Search JetBlue flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from San Francisco to Boston?

When you search for this flight from San Francisco to Boston, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Boston?

Millions of users choose and trust Cheapflights to book the best flight deals from San Francisco to Boston for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from San Francisco to Boston with no change fees?

Certainly. Search results for flights to Boston from San Francisco shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from San Francisco to Boston become cheaper?

Yes, Cheapflights offers price alerts on San Francisco to Boston flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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