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Cheap flights from Boston to San Francisco from £92

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 30/3. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SFO
4 Feb — 11 Feb1
1 adult

The best prices from Boston Logan Intl to San Francisco are usually found in September or February, booked 56 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

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 30 January 2025.

Round-trip from

£163

One-way from

£92

Popular in

June

Cheapest in

September

Average price

£271

Good round-trip deal

£180 or less

Good one-way deal

£139 or less
United Airlines
  • United Airlines
  • 5/3-11/3
  • 1 total stop
  • 14h 37m total
  • Boston to San Francisco
JetBlue
  • JetBlue
  • 30/3
  • Nonstop
  • 6h 39m total
  • Boston to San Francisco
Highest demand for flights based on searches. 9% potential increase in price (£24 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
Average for round-trip flights in January 2025
Price to beat on a round-trip flight from Boston Logan Intl to San Francisco.
Price to beat on a one-way flight from Boston Logan Intl to San Francisco.

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 30 January 2025.

Wed 5/307:55BOS - SFO
Nonstop6h 55mUnited Airlines
Tue 11/313:08SFO - BOS
1 stop7h 42mUnited Airlines
Deal found 29/1£163
Mon 3/218:15BOS - SFO
1 stop8h 59mJetBlue
Tue 11/208:00SFO - BOS
Nonstop5h 34mJetBlue
Deal found 30/1£166
Fri 21/217:50BOS - SFO
Nonstop7h 06mDelta
Tue 25/207:30SFO - BOS
Nonstop5h 40mDelta
Deal found 29/1£170
Fri 21/216:23BOS - SFO
1 stop10h 22mAlaska Airlines
Tue 25/208:20SFO - BOS
1 stop12h 39mAlaska Airlines
Deal found 29/1£186
Wed 26/206:55BOS - SFO
1 stop13h 45mSouthwest
Mon 3/306:15SFO - BOS
2 stops11h 15mSouthwest
Deal found 29/1£218
Sat 26/711:34BOS - SFO
1 stop14h 16mSun Country Air
Sun 27/718:25SFO - BOS
1 stop13h 12mSun Country Air
Deal found 29/1£293

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 858,174 searches. Data last updated 30 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 5/3

07:55-11:50

Nonstop6h 55m

San Francisco

Tue 11/3

13:08-23:50

1 stop7h 42m

£163

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Mon 24/2

16:35-22:40

1 stop9h 05m

San Francisco

Sat 1/3

06:40-15:15

Nonstop5h 35m

£166

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Fri 21/2

17:50-21:56

Nonstop7h 06m

San Francisco

Tue 25/2

07:30-16:10

Nonstop5h 40m

£170

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 19/2

19:59-08:52

1 stop15h 53m

San Francisco

Wed 26/2

09:00-15:23

1 stop27h 23m

£174

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Wed 26/2

06:55-17:40

1 stop13h 45m

San Francisco

Mon 3/3

06:15-20:30

2 stops11h 15m

£218

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sat 26/7

11:34-22:50

1 stop14h 16m

San Francisco

Fri 1/8

23:59-10:37

1 stop7h 38m

£293

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Sun 30/3

06:00-09:39

Nonstop6h 39m

£92

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Tue 29/4

16:30-20:29

Nonstop6h 59m

£92

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Fri 21/2

16:23-23:45

1 stop10h 22m

£99

BostonSan Francisco

BOS - SFO

BOSSFO

Boston Logan Intl

Tue 18/2

17:54-21:50

Nonstop6h 56m

£101

Flights are sorted by cheapest return flights first.

Deals found on 30/1

Showing 1-10 of 12 results
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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 24 January 2025.

Booking 56 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boston to San Francisco. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, February is the cheapest month in which you can book a flight from Boston to San Francisco (average of £538). Flying from Boston to San Francisco in July is currently the most expensive (average of £803). 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 30 January 2025.

A simple way to save on the total cost of your ticket is to fly from Boston to San Francisco in the morning. If you’re flexible enough to do this you can expect to save up to 36% on your trip compared to booking a flight at midday.

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 30 January 2025.

The most flights from BOS to SFO are scheduled on a Monday (29 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 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 30 January 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from Boston to San Francisco have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

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

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

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

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

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

8.0
Very Good

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

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

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

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

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Christine,Aug 2024

DEN - LGB

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

    You will need to book a flight from Boston Logan Intl to San Francisco if you want to fly from Boston to San Francisco. At least 2 different airlines have flights from Logan Intl (BOS) to San Francisco (SFO) on a regular basis. There are 25 flights to San Francisco from the Boston airport per day. If you manage to book one that is nonstop, then you can expect the flight time from BOS to SFO to be around 6h 55m.

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

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

    Flying on United Airlines is currently your cheapest option to San Francisco, with prices starting at £163. Additional return tickets that might be worth considering are offered by JetBlue and Delta, with the lowest prices starting at £166 and £170, respectively. You may be able to fly from Boston to San Francisco for 43% less than the average price by searching for these airlines.

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

    The cheapet airlines for a one-way flight from Boston to San Francisco are JetBlue (£92), Delta (£92), and Alaska Airlines (£99).

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Boston to San Francisco on time: Korean Air (100%), EL AL (93%), ANA (87%).

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

    On average you can expect to pay £218 for a flight from Boston to San Francisco. The cheapest flight overall is £125 while the most popular route, (Boston Logan Intl - San Francisco) is currently priced at £182.

  • 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, February is the cheapest month in which you can book a flight from Boston to San Francisco (average of £538). Flying from Boston to San Francisco in July is currently the most expensive (average of £803). 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 Boston?

Book flights to Boston if you plan to visit one of these locations
Santa Cruz
San Mateo
Los Banos
Vallejo
South San Francisco
Pacific Grove
Union City

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Alternative routes for Boston to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Top 2 airlines flying from Boston to San Francisco

Discover the top 2 airlines that operate flights from Boston to San Francisco. 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 858,174 searches. Data last updated 30 January 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest£103Average£182FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
Alaska AirlinesCheapest£178Average£330FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines 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 Boston to San Francisco?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Boston to San Francisco. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights helps you find that perfect flight to San Francisco from Boston by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes! Cheapflights helps users easily find flights from Boston to San Francisco with no change fees.

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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