Cheap flights from Boston to San Francisco (BOS - SFO)

BOS — SFO
Jan 31 — Feb 71

The best prices from Boston Logan Intl to San Francisco are usually found in February or January, booked 47 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

How to find the cheapest flight from Boston (BOS) to San Francisco (SFO)

All the information you need to plan the best BOS to SFO flight in 2023: compare Boston to San Francisco flight prices with the expected peak season, weather and rainfall in San Francisco.

BOS - SFO

Price

$269 - $622

SFO

Temperature

51.8 - 62.6 °F

SFO

Rainfall

0 - 4.4 inches

Popular inJuneHigh demand for flights, 29% potential price rise
Cheapest inFebruaryBest time to find cheap flights, 39% potential price drop
Round-trip from$269From Boston Logan Intl to San Francisco
One-way from$99One-way flight from Boston Logan Intl to San Francisco

What is the cheapest day to fly round-trip from Boston to San Francisco?

Flying to your destination on a Sunday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to San Francisco. Check prices with Cheapflights to find a great deal for your trip.

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

To save up to 31% on this flight, we recommend booking at least 46 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Boston to San Francisco from $489 1-2 weeks out and tickets from $597 for flights departing within the next 72 hours.

What is the cheapest month to fly from Boston to San Francisco?

The best pricing can be found in the month of February. Prices to San Francisco from Boston average $440. You can even find prices in February for less than $440, as users have found deals to San Francisco from as low as $197. The month of June appears to be one of the more expensive times to travel to San Francisco from Boston. Flying in the targeted month can save you up to 41%.

When is the cheapest time to fly from Boston to San Francisco (BOS - SFO)?

It’s typically best to fly out from Boston to San Francisco in the evening. Doing so could potentially save you 23% on the flight price compared to flying in the morning, which is usually more expensive.

Cheap flights from Boston to San Francisco in January, February 2023

The best prices found for BOS to SFO flights for January, February
Feb 16 - Feb 23
BOS

Boston Logan Intl

SFO

San Francisco

2 stops

40h 53m
SFO

San Francisco

BOS

Boston Logan Intl

2 stops

19h 10m
$137

Multiple Airlines

Pick Dates

Deal found 1/26

Feb 16 - Feb 23
BOS

Boston Logan Intl

SFO

San Francisco

2 stops

40h 53m
SFO

San Francisco

BOS

Boston Logan Intl

3 stops

34h 54m
$153

Multiple Airlines

Pick Dates

Deal found 1/26

Feb 14 - Feb 21
BOS

Boston Logan Intl

SFO

San Francisco

2 stops

19h 41m
SFO

San Francisco

BOS

Boston Logan Intl

3 stops

22h 53m
$165

Multiple Airlines

Pick Dates

Deal found 1/24

Boston to San Francisco 2023 flight deals

Cheap flights to San Francisco from Boston found for this year
Feb 14 - Feb 21
BOS

Boston Logan Intl

SFO

San Francisco

2 stops

40h 53m
SFO

San Francisco

BOS

Boston Logan Intl

2 stops

19h 10m
$137

Multiple Airlines

Pick Dates

Deal found 1/24

Feb 14 - Feb 21
BOS

Boston Logan Intl

SFO

San Francisco

2 stops

40h 53m
SFO

San Francisco

BOS

Boston Logan Intl

3 stops

34h 54m
$153

Multiple Airlines

Pick Dates

Deal found 1/24

Feb 14 - Feb 21
BOS

Boston Logan Intl

SFO

San Francisco

2 stops

19h 41m
SFO

San Francisco

BOS

Boston Logan Intl

3 stops

22h 53m
$165

Multiple Airlines

Pick Dates

Deal found 1/24

Cheap Alaska Airlines flights from Boston to San Francisco

Feb 13 - Feb 14
BOS

Boston Logan Intl

SFO

San Francisco

Nonstop

6h 55m
SFO

San Francisco

BOS

Boston Logan Intl

Nonstop

5h 40m
$180

Alaska Airlines

Pick Dates

Deal found 1/23

Feb 24 - Feb 28
BOS

Boston Logan Intl

SFO

San Francisco

Nonstop

7h 05m
SFO

San Francisco

BOS

Boston Logan Intl

Nonstop

5h 32m
$184

Alaska Airlines

Pick Dates

Deal found 1/25

Feb 9 - Feb 15
BOS

Boston Logan Intl

SFO

San Francisco

Nonstop

6h 55m
SFO

San Francisco

BOS

Boston Logan Intl

Nonstop

5h 40m
$188

Alaska Airlines

Pick Dates

Deal found 1/23

  • Alaska Airlines is one of the most popular airlines used for those traveling from Boston to San Francisco. Flights on this route from Alaska Airlines typically cost $377.09 RT, a price that is 48% cheaper than the average Boston to San Francisco flight. The cheapest flight found was $124 RT. Boston Logan Intl Airport is the most common Boston airport to take off from when flying to San Francisco. San Francisco Airport is the most popular arrival airport in San Francisco. When flying from Boston to San Francisco, Alaska Airlines flights are 21% more popular than any other airline flying that same route.

Cheap JetBlue flights from Boston to San Francisco

Feb 14 - Feb 21
BOS

Boston Logan Intl

SFO

San Francisco

Nonstop

6h 54m
SFO

San Francisco

BOS

Boston Logan Intl

Nonstop

5h 27m
$189

JetBlue

Pick Dates

Deal found 1/24

Feb 13 - Feb 14
BOS

Boston Logan Intl

SFO

San Francisco

1 stop

8h 38m
SFO

San Francisco

BOS

Boston Logan Intl

Nonstop

5h 27m
$190

JetBlue

Pick Dates

Deal found 1/23

Feb 11 - Feb 11
BOS

Boston Logan Intl

SFO

San Francisco

Nonstop

6h 54m
SFO

San Francisco

BOS

Boston Logan Intl

Nonstop

5h 32m
$193

JetBlue

Pick Dates

Deal found 1/24

  • JetBlue is one of the most popular airlines used for those traveling from Boston to San Francisco. Flights from JetBlue traveling this route typically cost $374.09 RT. This price is typically 51% more expensive than other airlines that offer Boston to San Francisco flights. When booking this route, the cheapest RT price found was $145. The most popular departure airport in Boston when flying to San Francisco is Boston Logan Intl Airport. The most popular airport to fly into when visiting San Francisco is San Francisco Airport. When flying from Boston to San Francisco, JetBlue flights are 20% more popular than any other airline flying that same route.

Non-stop flights to San Francisco from Boston

Save time with Boston to San Francisco direct flight deals
Feb 12 - Feb 13
BOS

Boston Logan Intl

SFO

San Francisco

Nonstop

6h 55m
SFO

San Francisco

BOS

Boston Logan Intl

Nonstop

5h 40m
$178

Alaska Airlines

Pick Dates

Deal found 1/26

Feb 13 - Feb 14
BOS

Boston Logan Intl

SFO

San Francisco

Nonstop

6h 48m
SFO

San Francisco

BOS

Boston Logan Intl

Nonstop

5h 40m
$179

Multiple Airlines

Pick Dates

Deal found 1/23

Feb 15 - Feb 15
BOS

Boston Logan Intl

SFO

San Francisco

Nonstop

6h 45m
SFO

San Francisco

BOS

Boston Logan Intl

Nonstop

5h 33m
$180

United Airlines

Pick Dates

Deal found 1/24

Last minute flights from Boston to San Francisco

Late deals on return flights to San Francisco from Boston, departing today and this week
Feb 2 - Feb 15
BOS

Boston Logan Intl

SFO

San Francisco

2 stops

16h 43m
SFO

San Francisco

BOS

Boston Logan Intl

Nonstop

5h 40m
$185

Multiple Airlines

Pick Dates

Deal found 1/23

Feb 1 - Mar 1
BOS

Boston Logan Intl

SFO

San Francisco

2 stops

16h 43m
SFO

San Francisco

BOS

Boston Logan Intl

1 stop

9h 39m
$193

Multiple Airlines

Pick Dates

Deal found 1/23

Feb 4 - Feb 21
BOS

Boston Logan Intl

SFO

San Francisco

2 stops

16h 43m
SFO

San Francisco

BOS

Boston Logan Intl

Nonstop

5h 32m
$195

Multiple Airlines

Pick Dates

Deal found 1/23

One-way flights to San Francisco from Boston

The cheapest one-way flights from Boston to San Francisco
Feb 13
BOS

Boston Logan Intl

SFO

San Francisco

2 stops

44h 08m
$86

Multiple Airlines

Pick Dates

Deal found 1/23

Feb 13
BOS

Boston Logan Intl

SFO

San Francisco

Nonstop

6h 55m
$88

Alaska Airlines

Pick Dates

Deal found 1/25

Feb 14
BOS

Boston Logan Intl

SFO

San Francisco

Nonstop

6h 55m
$90

Alaska Airlines

Pick Dates

Deal found 1/24

Reviews of Airlines Servicing San Francisco

Alaska Airlines
8.0
Very good
1,360 reviews

Crew

8.6

Boarding

8.2

Entertainment

7.1

Food

7.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

Many of us were grateful that the pilot responded so quickly to our request for some heat!!

Alaska Airlines
8.0
Very good
1,360 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Crew

8.6

Boarding

8.2

Entertainment

7.1

Food

7.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

Many of us were grateful that the pilot responded so quickly to our request for some heat!!

Delta
7.9
Good
1,998 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Crew

8.6

Boarding

8.2

Entertainment

7.1

Food

7.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

Many of us were grateful that the pilot responded so quickly to our request for some heat!!

JetBlue
7.6
Good
363 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Crew

8.6

Boarding

8.2

Entertainment

7.1

Food

7.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

Many of us were grateful that the pilot responded so quickly to our request for some heat!!

American Airlines
7.4
Good
1,666 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Crew

8.6

Boarding

8.2

Entertainment

7.1

Food

7.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

Many of us were grateful that the pilot responded so quickly to our request for some heat!!

Frontier
6.1
Okay
536 reviews
Alaska Airlines
8.0
Very good
1,360 reviews

Crew

8.6

Boarding

8.2

Entertainment

7.1

Food

7.2

Comfort

8.0

Overall

8.0

Reviews

1 / 10

Many of us were grateful that the pilot responded so quickly to our request for some heat!!

Related info for your journey

Useful info, stats and facts about Boston to San Francisco flights.

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

If you book a flight from Boston to San Francisco, you will be flying from Logan Intl to San Francisco. Flights to San Francisco (SFO) from Boston Logan Intl (BOS) take 6h 32m for a nonstop flight. There are 37 flights from Logan Intl to San Francisco per day from 10 airlines.

Which airlines flying from Boston Logan Intl to San Francisco have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like JetBlue, United Airlines, and Delta flying from Boston Logan Intl to San Francisco have implemented new flexible cancellation policies.

Can I find flights from Boston to San Francisco for under $200 on Cheapflights?

Yes, there are multiple flights from Boston to San Francisco for under $200. The cheapest flight booked recently is on Multiple Airlines for just $136, but on average you can expect to pay $174.

Are there nonstop flights from Boston to San Francisco for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from Boston to San Francisco under $200. A good price for a nonstop flight from Boston to San Francisco is less than $193.

Are there last-minute flights available from Boston to San Francisco for under $200?

There are currently 20+ open flights from Boston to San Francisco within the next 7 days for less than $200.

What days are nonstop flights available from Boston to San Francisco?

Days when nonstop flights are available for this flight are: Saturday.

How popular is this Boston to San Francisco flight route?

Flights from Boston Logan Intl to San Francisco have been viewed 69 times in the past calendar month.

How many flights depart from Boston to San Francisco on average per day?

On average 2 flights depart from Boston to San Francisco per day.
Afternoon (Noon - 6pm) - 100% of flight departures

How long is the flight from Boston to San Francisco?

For as low as $180, Alaska Airlines can have you in San Francisco from Boston in 6h 54m. The distance between Boston and San Francisco is about 2712 mi. All flights are typically nonstop.

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

According to our current data, Alaska Airlines ($180), and JetBlue ($189) offers the cheapest pricing from Boston to San Francisco. Alaska Airlines is currently priced 59% below the average price you’ll pay for this route.

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

One-way options have recently been found by users for as low as $88 on Alaska Airlines. Other airlines that offer cheap prices include Delta from $104 and American Airlines from $107 one-way.

What are the most popular airlines that fly from Boston to San Francisco?

Before booking your flight from Boston to San Francisco check out the most popular airlines for this route: Undisclosed Carrier, American Airlines or Alaska Airlines.

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: WestJet (93%), ANA (89%), United Airlines (83%).

What are the cheapest flights from Boston to San Francisco?

On average you can expect to pay $940 for a flight from Boston to San Francisco. The cheapest flight overall is $89 while the most popular route, (Boston Logan Intl - San Francisco) is currently priced at $183.

Alternative routes for Boston to San Francisco

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

Top 8 airlines flying from Boston to San Francisco

The chart below displays the airlines Cheapflights users traveling from Boston to San Francisco choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$14Average$19FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
Alaska AirlinesCheapest$124Average$377FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Alaska Airlines flights
Spirit AirlinesCheapest$138Average$455FlexibilityNo cancel feeOn-time65%COVID-19 safety
Search Spirit Airlines flights
DeltaCheapest$145Average$374FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
JetBlueCheapest$155Average$406FlexibilityNo cancel feeOn-time62%COVID-19 safety
Search JetBlue flights
American AirlinesCheapest$163Average$459FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
United AirlinesCheapest$169Average$478FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
Sun Country AirCheapest$181Average$441FlexibilityNo cancel feeOn-time83%COVID-19 safety
Search Sun Country Air flights

Hourly flight availability from Boston to San Francisco

See what time of day planes typically take off from Boston to San Francisco
22%of flight departuresEarly morningMidnight to 6 am
21%of flight departuresMorning6 am to noon
46%of flight departuresAfternoonNoon to 6 pm
11%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Boston to San Francisco

See how many times per day planes take to the skies headed from Boston to San Francisco
Sunday39daily flights
Monday40daily flights
Tuesday39daily flights
Wednesday41daily flights
Thursday43daily flights
Friday41daily flights
Saturday22daily flights
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