How far in advance should I book tickets for a flight with American Airlines from Boston to San Francisco?

Generally, when trying to get a below average price for your ticket, try to book around 9 days before departure. For the cheapest possible price, our data suggests booking 78 days before departure.

Is American Airlines the cheapest airline to fly with from Boston to San Francisco?

With an average price of $427 return, American Airlines is not the cheapest airline to fly from Boston to San Francisco with. Instead, for the lowest price, our data suggests flying with Frontier, where a return flight costs $222 on average.

What is the cheapest American Airlines flight from Boston to San Francisco?

In the last 3 days, the lowest price for a flight with American Airlines from Boston to San Francisco was $207 for a return flight and $120 for a one-way flight.

Does American Airlines fly direct to San Francisco from Boston?

Yes, American Airlines does offer direct flights for the route, with around 5 flights per week.

What’s the cheapest day of the week to fly from Boston to San Francisco with American Airlines?

On average, the cheapest day of the week to fly from Boston to San Francisco with American Airlines is Tuesday, when prices are around $110. The most expensive day is generally Saturday, where the average price is around $194.

What’s the cheapest month to fly from Boston to San Francisco with American Airlines?

The cheapest month for American Airlines flights to San Francisco from Boston is generally March, where plane tickets cost $186 on average. If possible, try to avoid the most expensive months of October and November, where tickets cost $366 and $366 respectively.

$119 Cheap American Airlines Flights from Boston to San Francisco

BOS - SFO

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Flight Deals

Cheap American Airlines Flight Deals from Boston to San Francisco

Here are some of the best deals found on KAYAK recently from American Airlines for round-trip flights from Boston to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip American Airlines flight deals from Boston to San Francisco

Sun, Jan 18 - Tue, Jan 27

6:05 am - 11:52 am

BOS

SFO

8h 47m1 stop

7:00 am - 5:56 pm

SFO

BOS

7h 56m1 stop

$237American Airlines

Thu, Jan 15 - Tue, Jan 20

1:48 pm - 8:25 pm

BOS

SFO

9h 37m1 stop

12:17 am - 11:31 am

SFO

BOS

8h 14m1 stop

$238American Airlines

Mon, Feb 2 - Thu, Feb 12

1:48 pm - 10:28 pm

BOS

SFO

11h 40m1 stop

7:00 am - 6:09 pm

SFO

BOS

8h 09m1 stop

$247American Airlines

Sun, Feb 8 - Sun, Feb 15

11:21 am - 8:25 pm

BOS

SFO

12h 04m1 stop

11:23 pm - 11:33 am

SFO

BOS

9h 10m1 stop

$248American Airlines

Fri, Jan 16 - Mon, Jan 19

3:35 pm - 12:47 am

BOS

SFO

12h 12m1 stop

10:35 am - 10:56 pm

SFO

BOS

9h 21m1 stop

$257American Airlines

Sun, Jan 25 - Sun, Feb 1

7:05 am - 1:46 pm

BOS

SFO

9h 41m1 stop

10:30 pm - 9:29 am

SFO

BOS

7h 59m1 stop

$258American Airlines

Sat, Feb 21 - Tue, Feb 24

5:49 pm - 12:59 am

BOS

SFO

10h 10m1 stop

6:00 am - 5:05 pm

SFO

BOS

8h 05m1 stop

$265American Airlines

Fri, Feb 27 - Fri, Mar 6

5:55 pm - 12:41 am

BOS

SFO

9h 46m1 stop

11:23 pm - 10:28 am

SFO

BOS

8h 05m1 stop

$275American Airlines

Tue, Feb 10 - Mon, Feb 16

8:05 am - 5:24 pm

BOS

SFO

12h 19m1 stop

11:23 pm - 10:28 am

SFO

BOS

8h 05m1 stop

$277American Airlines

Tue, Feb 24 - Sat, Feb 28

9:10 am - 6:42 pm

BOS

SFO

12h 32m1 stop

11:23 pm - 11:33 am

SFO

BOS

9h 10m1 stop

$279American Airlines

Useful Info

Low season	September
High season	August
Cheapest flight	$119
Average price round-trip	$404

Best time to beat the crowds with an average 39% drop in price.

Most popular time to fly and prices are also 18% lower on average.

Flight from Boston to San Francisco

(price for this month)

When to Book Flights with American Airlines from Boston to San Francisco

Average price per month

Flight prices as travel date approaches

How far in advance should I book tickets for a flight with American Airlines from Boston to San Francisco?
Generally, when trying to get a below average price for your ticket, try to book around 9 days before departure. For the cheapest possible price, our data suggests booking 78 days before departure.
Is American Airlines the cheapest airline to fly with from Boston to San Francisco?
With an average price of $427 return, American Airlines is not the cheapest airline to fly from Boston to San Francisco with. Instead, for the lowest price, our data suggests flying with Frontier, where a return flight costs $222 on average.
What is the cheapest American Airlines flight from Boston to San Francisco?
In the last 3 days, the lowest price for a flight with American Airlines from Boston to San Francisco was $207 for a return flight and $120 for a one-way flight.
Does American Airlines fly direct to San Francisco from Boston?
Yes, American Airlines does offer direct flights for the route, with around 5 flights per week.
What’s the cheapest day of the week to fly from Boston to San Francisco with American Airlines?
On average, the cheapest day of the week to fly from Boston to San Francisco with American Airlines is Tuesday, when prices are around $110. The most expensive day is generally Saturday, where the average price is around $194.
What’s the cheapest month to fly from Boston to San Francisco with American Airlines?
The cheapest month for American Airlines flights to San Francisco from Boston is generally March, where plane tickets cost $186 on average. If possible, try to avoid the most expensive months of October and November, where tickets cost $366 and $366 respectively.

7.2

Good10,000 verified ratings

6.5Food

7.2Comfort

8.0Crew

6.9Entertainment

7.5Boarding

Cons -

Show reviews that mention

8.0 Very good

Verified traveler, Dec 2025

DFW

ATL

Everything but the landing, it was hard and scary. 😱

2.0 Poor

Brandyi, Dec 2025

LAX

HND

I requested a low sodium meal. Reason being, I take medicine for high blood pressure and I wear compression socks on long flights to help with leg swelling. Having less sodium in meals really helps me feel better on long flights. I received my initial low sodium meal after takeoff. Just before landing, the crew came through with the meal cart and offered me what was being served. I said no thank you and then noticed my low sodium meal in the meal cart, with my name and seat assignment on it. I motioned to the crew member, but he grabbed the meal cart and proceeded to move to the rear of the aircraft. He didn’t see me or other passengers who had attempted to get this attention. He was more concerned about completing meal service since we were due to land in under 45 minutes. I pressed the call light five times from my seat to receive help, but no crew member responded to me. So, I didn’t receive a second meal, one that I requested (the low sodium option). This led me to have a migraine from only eating one meal on an 11-hour flight. This is why I’m not a fan of flying US-based airlines overseas. The crew members continue to show the absolute worst customer service experience. I would not recommend flying American for overseas flights.

10.0 Wonderful

Robert, Dec 2025

CLT

BOS

I got upgraded. That was nice!

10.0 Wonderful

Douglas, Dec 2025

SLC

DFW

WiFi didn’t work the entire flight. Very disappointing. Minimal food and options - sadly the state of current affairs. All other aspects of the flight were fine.

10.0 Wonderful

Tina, Dec 2025

CLT

SAN

It was perfect

10.0 Wonderful

Paul, Dec 2025

SEA

CLT

Great flight - friendly and attentive team! Seats in coach were comfy, but a little cramped - but that is the case with all airlines ;)

6.0 Okay

Dan, Dec 2025

ORD

ALO

The boarding by groups is pointless. The first two groups worked fine, but almost Noone boarded in goups three thru five leaving the vast majority boarding when group six was called. It defeated the purpose of spreading out the crowd.

4.0 Mediocre

Gabriel, Dec 2025

MIA

EZE

I don’t know who decides what food to serve on these flights but I would be so embarrassed if I served this to anyone and call it food…

10.0 Wonderful

Craig, Dec 2025

CHS

PHL

Left early, arrived early

4.0 Mediocre

Joseph, Dec 2025

FLL

DFW

For whatever reason, the flight was not catered -we were told it would be a 45 minute delay waiting for catering - so no food. There were opened candy and peanuts in the seatback pocket. Flight landed early in DFW but due to the assigned gate not being available, we sat on the ground for 30 minutes waiting for the gate to open - making the flight actually arrive at the gate late.

Everything you need to know for your flight from Boston to San Francisco

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Other airlines flying from Boston to San Francisco

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Delta flights from Boston to San Francisco

United Airlines flights from Boston to San Francisco

Alaska Airlines flights from Boston to San Francisco

BOS - SFO

$119 Find Cheap American Airlines Flights from Boston to San Francisco

Search hundreds of travel sites at once for deals on American Airlines flights from Boston to San Francisco

Cheap American Airlines Flight Deals from Boston to San Francisco

Recent round-trip American Airlines flight deals from Boston to San Francisco

Recent one-way American Airlines flight deals from Boston to San Francisco

Recent last minute American Airlines flight deals from Boston to San Francisco

Good to know

When to Book Flights with American Airlines from Boston to San Francisco

FAQs for flying to San Francisco with American Airlines

How far in advance should I book tickets for a flight with American Airlines from Boston to San Francisco?

Generally, when trying to get a below average price for your ticket, try to book around 9 days before departure. For the cheapest possible price, our data suggests booking 78 days before departure.

Is American Airlines the cheapest airline to fly with from Boston to San Francisco?

With an average price of $427 return, American Airlines is not the cheapest airline to fly from Boston to San Francisco with. Instead, for the lowest price, our data suggests flying with Frontier, where a return flight costs $222 on average.

What is the cheapest American Airlines flight from Boston to San Francisco?

In the last 3 days, the lowest price for a flight with American Airlines from Boston to San Francisco was $207 for a return flight and $120 for a one-way flight.

Does American Airlines fly direct to San Francisco from Boston?

Yes, American Airlines does offer direct flights for the route, with around 5 flights per week.

What’s the cheapest day of the week to fly from Boston to San Francisco with American Airlines?

On average, the cheapest day of the week to fly from Boston to San Francisco with American Airlines is Tuesday, when prices are around $110. The most expensive day is generally Saturday, where the average price is around $194.

What’s the cheapest month to fly from Boston to San Francisco with American Airlines?

The cheapest month for American Airlines flights to San Francisco from Boston is generally March, where plane tickets cost $186 on average. If possible, try to avoid the most expensive months of October and November, where tickets cost $366 and $366 respectively.

American Airlines Customer Reviews

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Everything you need to know for your flight from Boston to San Francisco

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Top American Airlines flights

The most popular destinations for flights with American Airlines according to clicks from KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Cabin class types available on flights to San Francisco

Cabin classes available on flights to Boston. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

Complete your trip to San Francisco with a hotel stay or car rental

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The most popular flights on KAYAK according to clicks in the last 2 weeks. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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