How many flights from Boston to San Francisco are non-stop?

In the trailing 90 days, approximately 33.9% of flights from Boston to San Francisco were non-stop. For flights that included stopovers, the median number of stopovers was 2. This indicates that while direct options are available, a significant portion of flights on this route involve connections.

How long is the flight from Boston to San Francisco?

The typical direct flight from Boston to San Francisco has a median duration of 6 hours and 39 minutes. For flights with one stop, the median duration extends to 9 hours and 53 minutes. The direct air distance between these two cities is approximately 4343 kilometers.

Should I set a price alert for Boston to San Francisco flights?

Historically, deals for flights from Boston to San Francisco are classified as frequent. This suggests that price fluctuations and new offers appear regularly. Setting a price alert could be beneficial to capture a good deal as they become available.

Flights From Boston

To San Francisco

Cheap Flights from Boston to San Francisco

Browse current best options from Boston. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

Boston

RatePunk searches hundreds of travel sites at once for deals on flights to San Francisco

Prices updated 1 day ago

461 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Sep 14, 2026.)

Today’s best flight deals from Boston to San Francisco

Explore current cheapest deals departing from Boston to San Francisco

2026-11-03 – 2026-11-10
BOS - San Francisco
74% AI deal score
$270
$276
Round trip
2026-11-07 – 2026-11-11
BOS - San Francisco
75% AI deal score
$285
$277
Round trip
2026-10-27 – 2026-10-31
BOS - San Francisco
77% AI deal score
$304
$279
Round trip
2026-11-04 – 2026-11-07
BOS - San Francisco
76% AI deal score
$284
$293
Round trip
2026-11-11 – 2026-11-14
BOS - San Francisco
76% AI deal score
$285
$293
Round trip
2026-11-10 – 2026-11-14
BOS - San Francisco
76% AI deal score
$285
$293
Round trip
2026-10-27 – 2026-10-30
BOS - San Francisco
77% AI deal score
$304
$294
Round trip
2026-11-04 – 2026-11-08
BOS - San Francisco
76% AI deal score
$284
$294
Round trip
2026-11-13 – 2026-11-17
BOS - San Francisco
73% AI deal score
$285
$296
Round trip
2026-11-12 – 2026-11-17
BOS - San Francisco
73% AI deal score
$283
$296
Round trip

Boston to San Francisco: Overview

Insights for flights from Boston to San Francisco

For cheap flights from Boston to San Francisco, fares typically range from $322–$617, with a median price of $429. Right now, fares are below the typical level, indicating a potentially favorable time to book.

When considering the cheapest time to fly from Boston to San Francisco, January stands out with a median fare of $182. Following closely, November also offers competitive pricing, with a median fare of $197. April presents another option for more affordable travel, with a median fare of $274.

A typical journey from Boston to San Francisco takes about 6h 39m, including connections. Given that most itineraries connect at least once, this duration reflects the overall travel time you can expect. For connecting flights, the median journey time is 13h 1m.

The route from Boston to San Francisco covers a significant distance of 4343 kilometers, classifying it as a long-haul journey. This means you can expect a substantial travel time, often involving multiple hours in the air.

How much is a round trip from Boston to San Francisco

Regular price: $255 - $392

Prices for flights from Boston to San Francisco are currently within the regular range.

The regular price range for flights from Boston to San Francisco is between $255 and $392. The current lowest deal is $292 with Alaska Airlines, Inc. for travel from Oct 29-Oct 31.

now $292

Low $255

High $392

The cheapest time to fly from Boston to San Francisco

Flights from Boston to San Francisco are generally lower priced from January to December. The cheapest month to fly is November, with a median price of $197. The most expensive month is June, with a median price of $597.

November

Cheapest

Flights from $197

June

Most Expensive

Flights from $597

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Boston to San Francisco

JetBlue Airways

Last-minute flights going from Boston to San Francisco

Wed, Sep 16

⌛ Last-Minute

BOS - San Francisco

Boston (BOS) - San Francisco (SFO)

Frontier Airlines

$522

$455

One-way

Thu, Sep 24

⌛ Last-Minute

BOS - San Francisco

Boston (BOS) - San Francisco (SFO)

JetBlue Airways

$360

$366

One-way

Sat, Sep 26

⌛ Last-Minute

BOS - San Francisco

Boston (BOS) - San Francisco (SFO)

Alaska Airlines, Inc.

$377

$369

One-way

Sat, Sep 26

⌛ Last-Minute

BOS - San Francisco

Boston (BOS) - San Francisco (SFO)

Alaska Airlines, Inc.

$374

One-way

Sun, Sep 27

⌛ Last-Minute

BOS - San Francisco

Boston (BOS) - San Francisco (SFO)

Deutsche Luft Hansa

$324

$356

One-way

Mon, Sep 28

⌛ Last-Minute

BOS - San Francisco

Boston (BOS) - San Francisco (SFO)

JetBlue Airways

$348

$365

One-way

Biggest price drops on these dates for flights from Boston to San Francisco

2 nights

Sep 16 - Sep 18

$522 → $455

13%

1 night

Sep 14 - Sep 15

$543 → $476

12%

5 nights

Dec 9 - Dec 14

$336 → $321

5 nights

Dec 11 - Dec 16

$338 → $325

Popular Airports to fly from Boston to San Francisco

Boston - San Francisco route insights

💸 Price insights

Recent fares are below the typical level

Recent fares for Boston to San Francisco are below the typical level at $292.

📅 Best time to fly

January offers the lowest median prices

Historically, January has the lowest median price at $182, followed by November at $197.

⏱️ Flight duration

Direct flights average 6h 39m

Direct flights from Boston to San Francisco typically take 6 hours and 39 minutes.

✈️ Airlines & availability

Connecting flights are more common

Connecting flights make up 66.1% of routes, with a median of 2 stopovers.

🏆 Airline highlight

JetBlue Airways offers direct flights

JetBlue Airways is one airline that provides direct flight options on this route.

🎯 Booking tip

Deals appear frequently

Historically, deals for flights on this route appear frequently, within a 30-day window.

Boston main airports to depart from

Logan International (BOS)

Cheapest

Logan International Airport is a convenient option for flights from Boston to San Francisco.

📍 ~4 km from city center (reachable by car or public transport)

💸 Flights from ~$279

San Francisco main airports to arrive at

San Francisco International (SFO)

Cheapest

San Francisco International Airport is a major gateway to San Francisco and the wider Bay Area.

📍 ~18 km from San Francisco (reachable by car, train, and bus)

💸 Flights from ~$277

Airports nearby San Francisco used as alternative

Oakland International (OAK)

Oakland International is a primary alternative, offering extensive domestic options and BART rail access.

📍 ~19 km from San Francisco (reachable by car or BART)

💸 Flights from ~$316

Business & First Class Flight Deals to San Francisco

Discover luxury on the budget with premium cabin class on flights from Boston to San Francisco.

Elite

Best Elite deals to San Francisco

Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.

From BOS

Elite

Nov 06

San Francisco, United States

90% AI deal score

$1,829

$1,347

Save $482

United Airlines

Business Class

From BOS

Elite

Oct 03

San Francisco, United States

89% AI deal score

$2,213

$1,553

Save $660

United Airlines

Business Class

From BOS

Elite

Oct 30

San Francisco, United States

88% AI deal score

$1,224

$961

Save $263

United Airlines

Business Class

From BOS

Elite

Oct 31

San Francisco, United States

88% AI deal score

$1,236

$961

Save $275

United Airlines

Business Class

From BOS

Elite

Nov 13

San Francisco, United States

88% AI deal score

$1,185

$963

Save $222

United Airlines

Business Class

From BOS

Elite

Dec 10

San Francisco, United States

88% AI deal score

$1,212

$976

Save $236

United Airlines

Business Class

From BOS

Elite

Dec 08

San Francisco, United States

88% AI deal score

$1,207

$976

Save $231

United Airlines

Business Class

From BOS

Elite

Dec 11

San Francisco, United States

88% AI deal score

$1,222

$983

Save $239

United Airlines

Business Class

From BOS

Elite

Dec 06

San Francisco, United States

88% AI deal score

$1,198

$983

Save $215

United Airlines

Business Class

From BOS

Elite

Oct 22

San Francisco, United States

88% AI deal score

$1,367

$1,127

Save $240

Porter Airlines, +1

Business Class

From BOS

Elite

Oct 31

San Francisco, United States

87% AI deal score

$1,212

$961

Save $251

United Airlines

Business Class

From BOS

Elite

Nov 02

San Francisco, United States

87% AI deal score

$1,172

$963

Save $209

United Airlines

Business Class

Frequently Asked Questions About Flights to San Francisco

Historically, booking flights from Boston to San Francisco at least 60 days in advance typically yields the lowest prices. Across the trailing quarter, prices for flights booked within 6 days of departure averaged around $766. In contrast, flights booked 60 or more days out had an average price of $446. This suggests a significant price difference based on how far in advance you secure your ticket.

Based on historical data from the trailing 90 days, a good price for a flight from Boston to San Francisco is considered to be $322 or less. The median price for this route during that period was $429. Prices can vary, with 75% of observed fares being $617 or less.

Historically, January has been the cheapest month to fly from Boston to San Francisco, with a median price of $182. November also offers competitive prices, with a median of $197. While April had a median price of $274, the annual median price for this route is $429, indicating that certain months can offer substantial savings.

Related routes

More routes from Boston

Flights from Boston to Ho Chi Minh City Flights from Boston to Salt Lake City Flights from Boston to San Jose Flights from Boston to San Juan Flights from Boston to Savusavu Flights from Boston to Shanghai Flights from Boston to Singapore Flights from Boston to Stockholm Flights from Boston to Suva Flights from Boston to Sydney Flights from Boston to Syracuse Flights from Boston to Tirana

Flights to San Francisco from other cities

Flights from Burbank to San Francisco Flights from Cape Town to San Francisco Flights from Cebu to San Francisco Flights from Charlotte to San Francisco Flights from Chicago to San Francisco Flights from Cincinnati to San Francisco Flights from Cleveland to San Francisco Flights from Colorado Springs to San Francisco Flights from Copenhagen to San Francisco Flights from Denver to San Francisco Flights from Kolkata to San Francisco Flights from New Delhi to San Francisco

Boston to San Francisco: Overview

Insights for flights from Boston to San Francisco

How much is a round trip from Boston to San Francisco

Regular price: $255 - $392

Prices for flights from Boston to San Francisco are currently within the regular range.

The regular price range for flights from Boston to San Francisco is between $255 and $392. The current lowest deal is $292 with Alaska Airlines, Inc. for travel from Oct 29-Oct 31.

now $292

Low $255

High $392

The cheapest time to fly from Boston to San Francisco

November

Cheapest

Flights from $197

June

Most Expensive

Flights from $597

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Boston to San Francisco

JetBlue Airways

Last-minute flights going from Boston to San Francisco

Wed, Sep 16

⌛ Last-Minute

BOS - San Francisco

Boston (BOS) - San Francisco (SFO)

Frontier Airlines

$522

$455

One-way

Thu, Sep 24

⌛ Last-Minute

BOS - San Francisco

Boston (BOS) - San Francisco (SFO)

JetBlue Airways

$360

$366

One-way

Sat, Sep 26

⌛ Last-Minute

BOS - San Francisco

Boston (BOS) - San Francisco (SFO)

Alaska Airlines, Inc.

$377

$369

One-way

Sat, Sep 26

⌛ Last-Minute

BOS - San Francisco

Boston (BOS) - San Francisco (SFO)

Alaska Airlines, Inc.

$374

One-way

Sun, Sep 27

⌛ Last-Minute

BOS - San Francisco

Boston (BOS) - San Francisco (SFO)

Deutsche Luft Hansa

$324

$356

One-way

Mon, Sep 28

⌛ Last-Minute

BOS - San Francisco

Boston (BOS) - San Francisco (SFO)

JetBlue Airways

$348

$365

One-way

Biggest price drops on these dates for flights from Boston to San Francisco

2 nights

Sep 16 - Sep 18

$522 → $455

13%

1 night

Sep 14 - Sep 15

$543 → $476

12%

5 nights

Dec 9 - Dec 14

$336 → $321

5 nights

Dec 11 - Dec 16

$338 → $325

Popular Airports to fly from Boston to San Francisco

Boston - San Francisco route insights

💸 Price insights

Recent fares are below the typical level

Recent fares for Boston to San Francisco are below the typical level at $292.

📅 Best time to fly

January offers the lowest median prices

Historically, January has the lowest median price at $182, followed by November at $197.

⏱️ Flight duration

Direct flights average 6h 39m

Direct flights from Boston to San Francisco typically take 6 hours and 39 minutes.

✈️ Airlines & availability

Connecting flights are more common

Connecting flights make up 66.1% of routes, with a median of 2 stopovers.

🏆 Airline highlight

JetBlue Airways offers direct flights

JetBlue Airways is one airline that provides direct flight options on this route.

🎯 Booking tip

Deals appear frequently

Historically, deals for flights on this route appear frequently, within a 30-day window.

Boston main airports to depart from

Logan International (BOS)

Cheapest

Logan International Airport is a convenient option for flights from Boston to San Francisco.

📍 ~4 km from city center (reachable by car or public transport)

💸 Flights from ~$279

San Francisco main airports to arrive at

San Francisco International (SFO)

Cheapest

San Francisco International Airport is a major gateway to San Francisco and the wider Bay Area.

📍 ~18 km from San Francisco (reachable by car, train, and bus)

💸 Flights from ~$277

Airports nearby San Francisco used as alternative

Oakland International (OAK)

Oakland International is a primary alternative, offering extensive domestic options and BART rail access.

San Francisco, United States

87% AI deal score

$1,172

$963

Save $209

United Airlines

Business Class

Frequently Asked Questions About Flights to San Francisco

Cheap Flights from Boston to San Francisco

Today’s best flight deals from Boston to San Francisco

Boston to San Francisco: Overview

Insights for flights from Boston to San Francisco

How much is a round trip from Boston to San Francisco

The cheapest time to fly from Boston to San Francisco

Direct flights from Boston to San Francisco

Last-minute flights going from Boston to San Francisco

Biggest price drops on these dates for flights from Boston to San Francisco

Popular Airports to fly from Boston to San Francisco

Boston - San Francisco route insights

Recent fares are below the typical level

January offers the lowest median prices

Direct flights average 6h 39m

Connecting flights are more common

JetBlue Airways offers direct flights

Deals appear frequently

Boston main airports to depart from

San Francisco main airports to arrive at

Airports nearby San Francisco used as alternative

Business & First Class Flight Deals to San Francisco

Best Elite deals to San Francisco

Nov 06

Oct 03

Oct 30

Oct 31

Nov 13

Dec 10

Dec 08

Dec 11

Dec 06

Oct 22

Oct 31

Nov 02

Frequently Asked Questions About Flights to San Francisco

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

How much should a flight from Boston to San Francisco cost?

What's the cheapest month to fly from Boston to San Francisco?

How many flights from Boston to San Francisco are non-stop?

How long is the flight from Boston to San Francisco?

Should I set a price alert for Boston to San Francisco flights?

Related routes

More routes from Boston

Flights to San Francisco from other cities

Boston to San Francisco: Overview

Insights for flights from Boston to San Francisco

How much is a round trip from Boston to San Francisco

The cheapest time to fly from Boston to San Francisco

Direct flights from Boston to San Francisco

Last-minute flights going from Boston to San Francisco

Biggest price drops on these dates for flights from Boston to San Francisco

Popular Airports to fly from Boston to San Francisco

Boston - San Francisco route insights

Recent fares are below the typical level

January offers the lowest median prices

Direct flights average 6h 39m

Connecting flights are more common

JetBlue Airways offers direct flights

Deals appear frequently

Boston main airports to depart from

San Francisco main airports to arrive at

Airports nearby San Francisco used as alternative

Business & First Class Flight Deals to San Francisco

Best Elite deals to San Francisco

Nov 06

Oct 03

Oct 30

Oct 31

Nov 13

Dec 10

Dec 08

Dec 11

Dec 06

Oct 22

Oct 31

Nov 02

Frequently Asked Questions About Flights to San Francisco

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

How much should a flight from Boston to San Francisco cost?

What's the cheapest month to fly from Boston to San Francisco?