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Cheap flights from Boston to San Francisco from $206

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 17/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SFO
3 Jan — 10 Jan1
1 adult

Cheap flight deals from Boston to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to San Francisco (SFO). 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 29 December 2024.

Round-trip from

$365

One-way from

$206

Popular in

June

Cheapest in

February

Average price

$693
Delta
  • Delta
  • 18/1-30/1
  • Nonstop
  • 12h 45m total
  • Boston to San Francisco
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JetBlue
  • JetBlue
  • 17/1
  • Nonstop
  • 6h 52m total
  • Boston to San Francisco
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High demand for flights, 9% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from Boston to San Francisco

Cheapest flights from Boston to San Francisco
Explore the most affordable flight options available from Boston to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 December 2024.

Sat 28/1220:59BOS - SFO
Nonstop6h 46mJetBlue
Thu 30/111:05SFO - BOS
Nonstop5h 38mJetBlue
Deal found 27/12$609
Sun 29/1218:59BOS - SFO
Nonstop7h 04mAlaska Airlines
Mon 3/206:00SFO - BOS
1 stop8h 39mAlaska Airlines
Deal found 27/12$624
Tue 31/1214:00BOS - SFO
1 stop9h 18mDelta
Sun 2/216:37SFO - BOS
1 stop11h 18mDelta
Deal found 27/12$757
Mon 30/1205:25BOS - SFO
2 stops11h 15mSouthwest
Sat 1/207:15SFO - BOS
2 stops11h 45mSouthwest
Deal found 27/12$777
Mon 30/1207:12BOS - SFO
1 stop9h 05mUnited Airlines
Wed 15/115:20SFO - BOS
2 stops11h 36mUnited Airlines
Deal found 28/12$833
Sat 28/1211:46BOS - SFO
1 stop14h 05mSun Country Air
Thu 2/118:07SFO - BOS
1 stop13h 44mSun Country Air
Deal found 27/12$1,061

Find flights from Boston to San Francisco within your budget

Customise your flight search to find flights from Boston to San Francisco 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 29 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sat 18/1

17:50-21:56

Nonstop7h 06m

San Francisco

Thu 30/1

13:15-21:54

Nonstop5h 39m

$365

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sat 18/1

19:45-23:30

Nonstop6h 45m

San Francisco

Fri 24/1

11:05-19:43

Nonstop5h 38m

$367

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Mon 10/2

08:00-11:53

Nonstop6h 53m

San Francisco

Mon 17/2

19:30-07:20

1 stop8h 50m

$373

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Fri 24/1

16:30-18:10

1 stop28h 40m

San Francisco

Fri 31/1

11:20-23:59

1 stop9h 39m

$391

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Tue 21/1

08:10-21:25

2 stops16h 15m

San Francisco

Thu 23/1

11:05-10:10

2 stops20h 05m

$476

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Tue 21/1

16:19-22:16

1 stop8h 57m

San Francisco

Wed 22/1

00:27-13:50

1 stop10h 23m

$556

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Fri 17/1

07:30-11:22

Nonstop6h 52m

$206

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Mon 13/1

17:50-21:56

Nonstop7h 06m

$207

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Mon 27/1

17:55-22:13

2 stops31h 18m

$212

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Thu 27/2

22:30-11:50

2 stops16h 20m

$215

Flights are sorted by cheapest return flights first.

Deals found on 28/12

Showing 1-10 of 12 results
1
2

Best time to book a flight from Boston to San Francisco

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

Travel insights for flights from Boston to San Francisco

Get recent, data-driven insights about flights from Boston to San Francisco including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a return flight from Boston to San Francisco. Price data was last updated on 27 December 2024.

The price you pay for your flight from Boston to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 56 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, March is the cheapest month in which you can book a flight from Boston to San Francisco (average of $876). Flying from Boston to San Francisco in December is currently the most expensive (average of $1,375). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to SFO?

Find hourly flight availability from Boston to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 December 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Boston to San Francisco as you normally would.

Weekly flight availability from Boston to San Francisco

Explore weekly flight availability from Boston to San Francisco. 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 29 December 2024.

The most flights from BOS to SFO are scheduled on a Friday (46 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (23 on average).

Rainfall in San Francisco by month

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

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

Temperature in San Francisco by month

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

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated 29 December 2024.
To help decide which airline to fly from Boston to San Francisco, see what other customers have to say about Delta, United Airlines and Alaska Airlines. 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
4,722 reviews
Check prices

Crew

8.7

Comfort

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Southwest
8.1
Very Good
4,722 reviews
Southwest
8.1
Very Good
4,722 reviews
Check prices

Crew

8.7

Comfort

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Alaska Airlines
8.0
Very Good
9,582 reviews
Southwest
8.1
Very Good
4,722 reviews
Check prices

Crew

8.7

Comfort

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Delta
8.0
Very Good
8,556 reviews
Southwest
8.1
Very Good
4,722 reviews
Check prices

Crew

8.7

Comfort

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

JetBlue
7.4
Good
3,238 reviews
Southwest
8.1
Very Good
4,722 reviews
Check prices

Crew

8.7

Comfort

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

United Airlines
7.4
Good
8,986 reviews
Southwest
8.1
Very Good
4,722 reviews
Check prices

Crew

8.7

Comfort

8.1

Food

7.2

Entertainment

7.7

Boarding

8.2

Overall

8.1

Reviews

1 / 10

No issues. I needed pre boarding and I was able to get it without issue

Related info for your journey

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

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

    Flights from Boston Logan Intl to San Francisco have been viewed 43 times in the past calendar month.

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

    Cheapflights users have booked flights from Boston to San Francisco round-trip from $365. Other airlines that can offer you cheap pricing are JetBlue, from $367, and United Airlines, from $373. These flights start at 36% lower than the current average price 3 months from now.

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

    $206 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Delta and Alaska Airlines, with prices starting from $207 and $212, respectively.

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

    The top 3 most reliable airlines when flying from Boston to San Francisco are EL AL (92%), United Airlines (86%) and ANA (85%).

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

    While on average a flight from Boston to San Francisco is generally $948, our data shows the cheapest flight currently is $590. When looking at the most popular route, (Boston Logan Intl - San Francisco), you can expect to pay $1,023 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, March is the cheapest month in which you can book a flight from Boston to San Francisco (average of $876). Flying from Boston to San Francisco in December is currently the most expensive (average of $1,375). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Boston to San Francisco

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Boston to Los Angeles flights

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

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

Millions of users choose and trust Cheapflights to book the best flight deals from Boston to San Francisco 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 Boston to San Francisco with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Boston to San Francisco flexibly with Cheapflights today.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Francisco from Boston today and book when prices fit your budget.

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