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

Historically, approximately 43.1% of flights from San Francisco to Boston have been non-stop. For travelers who opt for connecting flights, the median number of stopovers observed across the trailing 90 days was 2. This indicates that while direct options are available, a significant portion of routes involve at least one stop.

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. For flights with one stop, the median travel time is considerably longer, averaging 10 hours and 18 minutes. The distance covered on this route is approximately 4343 kilometers. Travelers should account for these differences when planning their journey.

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 one where favorable deals appear with regularity. Travelers can typically find good opportunities for this route across the trailing 30 days, indicating consistent availability of competitive pricing.

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 2 days ago

405 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Jul 26, 2026.)

Today’s best flight deals from San Francisco to Boston

Explore current cheapest deals departing from San Francisco to Boston

2026-09-26 – 2026-09-30
SFO - Boston
87% AI deal score
$315
$236
Round trip
2026-09-22 – 2026-09-29
SFO - Boston
87% AI deal score
$306
$236
Round trip
2026-09-23 – 2026-09-29
SFO - Boston
87% AI deal score
$306
$236
Round trip
2026-10-05 – 2026-10-07
SFO - Boston
89% AI deal score
$340
$240
Round trip
2026-09-21 – 2026-09-30
SFO - Boston
88% AI deal score
$330
$242
Round trip
2026-10-20 – 2026-10-22
SFO - Boston
89% AI deal score
$348
$243
Round trip
2026-10-06 – 2026-10-21
SFO - Boston
80% AI deal score
$296
$250
Round trip
2026-10-19 – 2026-10-22
SFO - Boston
88% AI deal score
$348
$250
Round trip
2026-10-22 – 2026-10-24
SFO - Boston
88% AI deal score
$349
$252
Round trip
2026-10-14 – 2026-10-20
SFO - Boston
81% AI deal score
$296
$257
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, current fares are near the typical level for this route. Only 4% of recent fares were classified as a good price, indicating that finding lower prices can be challenging.

When is the cheapest time to fly from San Francisco to Boston? The data shows that November and October are the most affordable months, both with median fares of $192. Following these, December also offers competitive pricing, with a median fare of $297.

A typical journey from San Francisco to Boston takes approximately 12h 38m, including connections. This is a long-haul route, covering a distance of 4343 km.

A meaningful share of itineraries between San Francisco and Boston are non-stop, with 43.1% of recent fares being direct flights from San Francisco to Boston. For itineraries that include connections, the median number of stopovers is 2.

How much is a round trip from San Francisco to Boston

Regular price: $354 - $758

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

The regular price range for flights from San Francisco to Boston is between $354 and $758. The current lowest deal is $238 with Frontier Airlines, for travel from Aug 25-Aug 31.

now $238

Low $354

High $758

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

Tue, Jul 28

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

Alaska Airlines, Inc.

$670

$429

One-way

Tue, Jul 28

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

Alaska Airlines, Inc.

$668

$453

One-way

Sat, Aug 8

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

Frontier Airlines

$509

$327

One-way

Sun, Aug 9

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

JetBlue Airways

$426

$293

One-way

Wed, Aug 12

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

JetBlue Airways

$456

$316

One-way

Thu, Aug 13

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

JetBlue Airways

$467

$303

One-way

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

3 nights

Aug 25 - Aug 28

$495 → $240

51%

3 nights

Aug 27 - Aug 30

$491 → $240

51%

3 nights

Aug 23 - Aug 26

$495 → $254

49%

1 night

Jul 28 - Jul 29

$670 → $429

36%

Popular Airports to fly from San Francisco to Boston

San Francisco - Boston route insights

💸 Price insights

Recent fares are near the typical level

Recent fares from SFO to BOS are near the typical level of $482 over the last 90 days.

📅 Best time to fly

Fly in November or October for the lowest prices

Historically, November and October offer the lowest median prices at $192 for SFO to BOS.

⏱️ Flight duration

Expect a long-haul flight of 12h 38m

Flights from SFO to BOS are typically long-haul, with a median duration of 12h 38m.

✈️ Airlines & availability

Mixed availability of direct and connecting 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 is an option for direct flights on the SFO to BOS route.

🎯 Booking tip

Deals are frequent on this route

Deals for flights from SFO to BOS are frequent, appearing within a 30-day window.

San Francisco main airports to depart from

San Francisco International (SFO)

Cheapest

San Francisco International is a key departure point for flights to Boston.

📍 ~19 km from San Francisco city center (reachable by car or train)

💸 Flights from ~$234

Boston main airports to arrive at

Logan International (BOS)

Cheapest

Logan International Airport is the primary arrival airport for flights to Boston.

📍 ~5 km from Boston (reachable by car, public transport, and ferry)

💸 Flights from ~$234

Airports nearby Boston used as alternative

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

Rhode Island T. F. Green Int'l Airport is a major regional hub with easy highway access via I-95 south of Boston.

📍 ~75 km from Boston (reachable by car)

💸 Flights from ~$244

Business & First Class Flight Deals to Boston

92% AI deal score

$1,314

$881

Save $433

Frequently Asked Questions About Flights to Boston

Historically, booking more than 60 days in advance typically yields the lowest average prices for flights from San Francisco to Boston. Across the trailing quarter, flights booked within this window had an average price of $491. In contrast, flights booked 0-6 days before departure were significantly higher, averaging $921. Planning ahead by at least two months can result in considerable savings.

A flight from San Francisco to Boston is considered a good deal if it is priced at or below $324. This threshold represents the lowest 25% of prices observed across the trailing 90 days. The median price for this route during the same period was $482, while prices in the upper quartile reached $703. Aiming for prices around or below $324 indicates a particularly favorable fare.

Historically, November and October have been the cheapest months to fly from San Francisco to Boston, with both months showing a median price of $192. December also offered relatively lower prices, with a median of $297. These prices are considerably lower than the annual median price of $482 for this route, based on data from the trailing 270 days.

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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

A typical journey from San Francisco to Boston takes approximately 12h 38m, including connections. This is a long-haul route, covering a distance of 4343 km.

How much is a round trip from San Francisco to Boston

Regular price: $354 - $758

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

The regular price range for flights from San Francisco to Boston is between $354 and $758. The current lowest deal is $238 with Frontier Airlines, for travel from Aug 25-Aug 31.

now $238

Low $354

High $758

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

Tue, Jul 28

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

Alaska Airlines, Inc.

$670

$429

One-way

Tue, Jul 28

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

Alaska Airlines, Inc.

$668

$453

One-way

Sat, Aug 8

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

Frontier Airlines

$509

$327

One-way

Sun, Aug 9

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

JetBlue Airways

$426

$293

One-way

Wed, Aug 12

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

JetBlue Airways

$456

$316

One-way

Thu, Aug 13

⌛ Last-Minute

SFO - Boston

San Francisco (SFO) - Boston (BOS)

JetBlue Airways

$467

$303

One-way

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

3 nights

Aug 25 - Aug 28

$495 → $240

51%

3 nights

Aug 27 - Aug 30

$491 → $240

51%

3 nights

Aug 23 - Aug 26

$495 → $254

49%

1 night

Jul 28 - Jul 29

$670 → $429

36%

Popular Airports to fly from San Francisco to Boston