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

In the trailing 90 days, approximately 43.1% of flights from San Francisco to Boston have been non-stop. For flights that include stopovers, the median number of stopovers has been 2. This indicates that while direct options are available, a significant portion of flights on this route involve at least one connection. Travelers should consider this when planning their journey.

How long is the flight from San Francisco to Boston?

The typical direct flight from San Francisco to Boston has a median duration of 5 hours and 54 minutes. Flights with one stop, however, are considerably longer, with a median duration of 10 hours and 18 minutes. The distance covered on this route is approximately 4343 kilometers. Travelers should account for these differences in flight time when choosing between direct and connecting options.

How often do cheap flights from San Francisco to Boston come up?

Historically, cheap flights from San Francisco to Boston come up frequently. This route is classified as having frequent deals across the trailing quarter. Travelers can often find favorable prices when planning their trips. This consistent availability of good fares makes it a popular route for price-conscious travelers.

Flights From San Francisco

To Boston

Cheap Flights from San Francisco to Boston

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

Deals from

San Francisco

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

Prices updated 1 day ago

462 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 15, 2026.)

Today’s best flight deals from San Francisco to Boston

Explore current cheapest deals departing from San Francisco to Boston

2026-10-27 – 2026-10-28
SFO - Boston
81% AI deal score
$338
$277
Round trip
2026-10-20 – 2026-10-28
SFO - Boston
77% AI deal score
$307
$277
Round trip
2026-11-04 – 2026-11-10
SFO - Boston
76% AI deal score
$296
$277
Round trip
2026-10-23 – 2026-10-28
SFO - Boston
79% AI deal score
$330
$289
Round trip
2026-10-24 – 2026-10-31
SFO - Boston
77% AI deal score
$321
$289
Round trip
2026-10-20 – 2026-10-24
SFO - Boston
78% AI deal score
$338
$289
Round trip
2026-11-09 – 2026-11-11
SFO - Boston
77% AI deal score
$311
$291
Round trip
2026-10-26 – 2026-10-31
SFO - Boston
79% AI deal score
$331
$294
Round trip
2026-10-26 – 2026-10-29
SFO - Boston
79% AI deal score
$338
$294
Round trip
2026-10-26 – 2026-10-30
SFO - Boston
79% AI deal score
$338
$294
Round trip

San Francisco to Boston: Overview

Insights for flights from San Francisco to Boston

For cheap flights from San Francisco to Boston, fares typically range from $324–$703, with a median of $482. Right now, fares are near the typical level, and about 4% of recent fares were classified as a good price. New deals appear almost daily, suggesting frequent opportunities to find competitive pricing for this route.

If you're looking for the cheapest time to fly from San Francisco to Boston, the data indicates that November and October are the most affordable months, both with a median fare of $192. Following these, December also offers relatively lower prices, with a median fare of $297.

A typical journey from San Francisco to Boston takes about 12h 38m, including connections. While a meaningful share of itineraries are non-stop, the rest typically involve 2 connections. This indicates that while direct flights from San Francisco to Boston are available, many travelers will experience layovers.

The route from San Francisco to Boston covers a distance of 4343 km, classifying it as a long-haul flight. This considerable distance means you should anticipate a longer travel day, especially when factoring in potential connections.

How much is a round trip from San Francisco to Boston

Regular price: $228 - $514

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

The regular price range for flights from San Francisco to Boston is between $228 and $514. The current lowest deal is $251 with Frontier Airlines for travel from Nov 3-Nov 17.

now $251

Low $228

High $514

The cheapest time to fly from San Francisco to Boston

The cheapest month to fly from SFO to BOS is October, with a median price of $192. The most expensive month is June, with a median price of $667. Prices are generally lower from January to December.

October

Cheapest

Flights from $192

June

Most Expensive

Flights from $667

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from San Francisco to Boston

JetBlue Airways

Last-minute flights going from San Francisco to Boston

Wed, Sep 23

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

JetBlue Airways

$395

$355

One-way

Fri, Sep 25

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

Alaska Airlines, Inc.

$429

$371

One-way

Sat, Sep 26

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

Alaska Airlines, Inc.

$426

$381

One-way

Sun, Sep 27

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

Alaska Airlines, Inc.

$420

$348

One-way

Sat, Oct 3

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

Alaska Airlines, Inc.

$289

$324

One-way

Sat, Oct 3

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

Alaska Airlines, Inc.

$298

$324

One-way

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

4 nights

Sep 15 - Sep 19

$592 → $487

18%

2 nights

Sep 18 - Sep 20

$584 → $486

17%

3 nights

Sep 16 - Sep 19

$596 → $500

16%

2 nights

Sep 27 - Sep 29

$420 → $348

17%

Popular Airports to fly from San Francisco to Boston

San Francisco - Boston route insights

💸 Price insights

Recent fares near the typical level

Recent fares for SFO to BOS are near the typical level, with 4% considered a good price.

📅 Best time to fly

November and October offer the lowest median prices

Historically, November ($192) and October ($192) have offered the lowest median prices.

⏱️ Flight duration

Median flight time is 12h 38m

The median flight time from San Francisco to Boston is 12 hours 38 minutes.

✈️ Airlines & availability

Mixed availability of direct flights

Direct flights make up 43.1% of routes, with connecting flights typically having 2 stopovers.

🏆 Airline highlight

JetBlue Airways offers direct flights

JetBlue Airways provides direct flight options on this route, with 1 direct deal available.

🎯 Booking tip

Deals appear frequently

Deals for flights on this route appear frequently, with a median price of $268.

San Francisco main airports to depart from

San Francisco International (SFO)

Cheapest

San Francisco International is a major hub, offering many flight options to Boston.

📍 ~18 km from San Francisco (reachable by car or train).

💸 Flights from ~$293

Boston main airports to arrive at

Logan International (BOS)

Cheapest

Logan International Airport is ideal for direct access to Boston and surrounding areas.

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

💸 Flights from ~$276

Airports nearby Boston used as alternative

Rhode Island T. F. Green Int'l Airport (PVD)

Cheapest

Boston, United States

90% AI deal score

$2,193

$1,532

Save $661

Alaska Airlines, Inc.

Business Class

From SFO

Elite

Sep 28

Boston, United States

90% AI deal score

$2,422

$1,573

Save $849

United Airlines

Business Class

From SFO

Elite

Sep 28

Boston, United States

90% AI deal score

$2,483

$1,593

Save $890

United Airlines

Business Class

From SFO

Elite

Oct 19

Boston, United States

90% AI deal score

$1,985

$1,387

Save $598

United Airlines

Business Class

From SFO

Elite

Sep 15

Boston, United States

90% AI deal score

$2,497

$1,720

Save $777

United Airlines

Business Class

From SFO

Elite

Oct 20

Boston, United States

89% AI deal score

$2,044

$1,528

Save $516

Alaska Airlines, Inc.

Business Class

From SFO

Elite

Nov 14

Boston, United States

89% AI deal score

$2,112

$1,532

Save $580

Alaska Airlines, Inc.

Business Class

From SFO

Elite

Sep 25

Boston, United States

89% AI deal score

$2,377

$1,593

Save $784

United Airlines

Business Class

From SFO

Elite

Dec 27

Boston, United States

89% AI deal score

$2,185

$1,512

Save $673

United Airlines

Business Class

From SFO

Elite

Sep 26

Boston, United States

89% AI deal score

$2,154

$1,567

Save $587

United Airlines

Business Class

From SFO

Elite

Dec 12

Boston, United States

89% AI deal score

$2,278

$1,597

Save $681

Alaska Airlines, Inc.

Business Class

Frequently Asked Questions About Flights to Boston

Historically, booking flights from San Francisco to Boston 60+ days in advance typically yields the lowest average prices, around $491. Prices tend to increase as the departure date approaches. For instance, flights booked 0-6 days out have an average price of $921. Even flights booked 7-13 days in advance are notably higher, averaging $573. Planning ahead by more than two months can lead to significant savings on this route.

Across the trailing quarter, a flight from San Francisco to Boston is considered a good deal if it is priced at or below $324. The median price for this route has been $482. Prices can go up to $703 or more for flights in the higher price ranges. Therefore, aiming for a price under $324 indicates a particularly favorable fare.

Historically, November and October have been the cheapest months to fly from San Francisco to Boston, both with a median price of $192. December also offers relatively lower prices, with a median of $297. These prices are significantly lower than the annual median of $482 for this route. Travelers looking for the best value should consider flying during these months.

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Flights to Boston from other cities

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San Francisco to Boston: Overview

Insights for flights from San Francisco to Boston

How much is a round trip from San Francisco to Boston

Regular price: $228 - $514

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

The regular price range for flights from San Francisco to Boston is between $228 and $514. The current lowest deal is $251 with Frontier Airlines for travel from Nov 3-Nov 17.

now $251

Low $228

High $514

The cheapest time to fly from San Francisco to Boston

The cheapest month to fly from SFO to BOS is October, with a median price of $192. The most expensive month is June, with a median price of $667. Prices are generally lower from January to December.

October

Cheapest

Flights from $192

June

Most Expensive

Flights from $667

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from San Francisco to Boston

JetBlue Airways

Last-minute flights going from San Francisco to Boston

Wed, Sep 23

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

JetBlue Airways

$395

$355

One-way

Fri, Sep 25

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

Alaska Airlines, Inc.

$429

$371

One-way

Sat, Sep 26

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

Alaska Airlines, Inc.

$426

$381

One-way

Sun, Sep 27

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

Alaska Airlines, Inc.

$420

$348

One-way

Sat, Oct 3

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

Alaska Airlines, Inc.

$289

$324

One-way

Sat, Oct 3

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

Alaska Airlines, Inc.

$298

$324

One-way

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

4 nights

Sep 15 - Sep 19

$592 → $487

18%

2 nights

Sep 18 - Sep 20

$584 → $486

17%

3 nights

Sep 16 - Sep 19

$596 → $500

16%

2 nights

Sep 27 - Sep 29

$420 → $348

17%

Popular Airports to fly from San Francisco to Boston

San Francisco - Boston route insights

💸 Price insights

Recent fares near the typical level

Recent fares for SFO to BOS are near the typical level, with 4% considered a good price.

📅 Best time to fly

November and October offer the lowest median prices

Historically, November ($192) and October ($192) have offered the lowest median prices.

⏱️ Flight duration

Median flight time is 12h 38m

The median flight time from San Francisco to Boston is 12 hours 38 minutes.

✈️ Airlines & availability

Mixed availability of direct flights

Direct flights make up 43.1% of routes, with connecting flights typically having 2 stopovers.

🏆 Airline highlight

JetBlue Airways offers direct flights

JetBlue Airways provides direct flight options on this route, with 1 direct deal available.

🎯 Booking tip

Deals appear frequently

Deals for flights on this route appear frequently, with a median price of $268.

San Francisco main airports to depart from

San Francisco International (SFO)

Cheapest

San Francisco International is a major hub, offering many flight options to Boston.

📍 ~18 km from San Francisco (reachable by car or train).

💸 Flights from ~$293

Boston main airports to arrive at

Logan International (BOS)

Cheapest

Logan International Airport is ideal for direct access to Boston and surrounding areas.

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

💸 Flights from ~$276

Airports nearby Boston used as alternative

Rhode Island T. F. Green Int'l Airport (PVD)

Cheapest

Rhode Island T. F. Green Int'l Airport is a major regional hub that can help travelers avoid Boston Logan congestion.

Boston, United States

89% AI deal score

$2,278

$1,597

Save $681

Alaska Airlines, Inc.

Business Class

Frequently Asked Questions About Flights to Boston

Cheap Flights from San Francisco to Boston

Today’s best flight deals from San Francisco to Boston

San Francisco to Boston: Overview

Insights for flights from San Francisco to Boston

How much is a round trip from San Francisco to Boston

The cheapest time to fly from San Francisco to Boston

Direct flights from San Francisco to Boston

Last-minute flights going from San Francisco to Boston

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

Popular Airports to fly from San Francisco to Boston

San Francisco - Boston route insights

Recent fares near the typical level

November and October offer the lowest median prices

Median flight time is 12h 38m

Mixed availability of direct flights

JetBlue Airways offers direct flights

Deals appear frequently

San Francisco main airports to depart from

Boston main airports to arrive at

Airports nearby Boston used as alternative

Business & First Class Flight Deals to Boston

Best Elite deals to Boston

Oct 27

Dec 07

Sep 28

Sep 28

Oct 19

Sep 15

Oct 20

Nov 14

Sep 25

Dec 27

Sep 26

Dec 12

Frequently Asked Questions About Flights to Boston

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

How do I know if a San Francisco to Boston flight is a good deal?

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

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

How long is the flight from San Francisco to Boston?

How often do cheap flights from San Francisco to Boston come up?

Related routes

More routes from San Francisco

Flights to Boston from other cities

San Francisco to Boston: Overview

Insights for flights from San Francisco to Boston

How much is a round trip from San Francisco to Boston

The cheapest time to fly from San Francisco to Boston

Direct flights from San Francisco to Boston

Last-minute flights going from San Francisco to Boston

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

Popular Airports to fly from San Francisco to Boston

San Francisco - Boston route insights

Recent fares near the typical level

November and October offer the lowest median prices

Median flight time is 12h 38m

Mixed availability of direct flights

JetBlue Airways offers direct flights

Deals appear frequently

San Francisco main airports to depart from

Boston main airports to arrive at

Airports nearby Boston used as alternative

Business & First Class Flight Deals to Boston

Best Elite deals to Boston

Oct 27

Dec 07

Sep 28

Sep 28

Oct 19

Sep 15

Oct 20

Nov 14

Sep 25

Dec 27

Sep 26

Dec 12

Frequently Asked Questions About Flights to Boston

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

How do I know if a San Francisco to Boston flight is a good deal?

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