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United Flights from Boston (BOS) to San Francisco (SFO) from $154

Trip Type
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Amazing United BOS to SFO Flight Deals

The cheapest flights to San Francisco Intl. found within the past 7 days were $246 round trip and $154 one way. Prices and availability subject to change. Additional terms may apply.

Thu, Aug 26 -
BOS
Boston
to
SFO
San Francisco
$154

One way

just found

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Wed, Aug 25 -
BOS
Boston
to
SFO
San Francisco
$168

One way

just found

Open BOS to SFO flights search result page
Thu, Sep 23 - Mon, Sep 27
BOS
Boston
to
SFO
San Francisco
$246

Roundtrip

found 1 hour ago

Open BOS to SFO flights search result page
Thu, Sep 23 - Mon, Sep 27
BOS
Boston
to
SFO
San Francisco
$248

Roundtrip

found 1 hour ago

Open BOS to SFO flights search result page
Thu, Sep 23 - Mon, Sep 27
BOS
Boston
to
SFO
San Francisco
$255

Roundtrip

found 1 hour ago

Open BOS to SFO flights search result page
Thu, Sep 23 - Mon, Sep 27
BOS
Boston
to
SFO
San Francisco
$257

Roundtrip

found 1 hour ago

Open BOS to SFO flights search result page
Thu, Sep 23 - Mon, Sep 27
BOS
Boston
to
SFO
San Francisco
$272

Roundtrip

found 1 hour ago

Open BOS to SFO flights search result page
Tue, Oct 5 - Mon, Oct 11
BOS
Boston
to
SFO
San Francisco
$279

Roundtrip

found 6 days ago

Open BOS to SFO flights search result page
Thu, Sep 23 - Mon, Sep 27
BOS
Boston
to
SFO
San Francisco
$288

Roundtrip

found 1 hour ago

Open BOS to SFO flights search result page
Thu, Aug 26 -
BOS
Boston
to
SFO
San Francisco
$154

One way

just found

Open BOS to SFO flights search result page
Wed, Aug 25 -
BOS
Boston
to
SFO
San Francisco
$168

One way

just found

Open BOS to SFO flights search result page
Thu, Sep 23 - Mon, Sep 27
BOS
Boston
to
SFO
San Francisco
$246

Roundtrip

found 1 hour ago

Open BOS to SFO flights search result page
Thu, Sep 23 - Mon, Sep 27
BOS
Boston
to
SFO
San Francisco
$248

Roundtrip

found 1 hour ago

Open BOS to SFO flights search result page
Thu, Sep 23 - Mon, Sep 27
BOS
Boston
to
SFO
San Francisco
$255

Roundtrip

found 1 hour ago

Open BOS to SFO flights search result page
Thu, Sep 23 - Mon, Sep 27
BOS
Boston
to
SFO
San Francisco
$257

Roundtrip

found 1 hour ago

Open BOS to SFO flights search result page
Thu, Sep 23 - Mon, Sep 27
BOS
Boston
to
SFO
San Francisco
$272

Roundtrip

found 1 hour ago

Open BOS to SFO flights search result page
Thu, Sep 23 - Mon, Sep 27
BOS
Boston
to
SFO
San Francisco
$288

Roundtrip

found 1 hour ago

Open BOS to SFO flights search result page
Tue, Oct 5 - Mon, Oct 11
BOS
Boston
to
SFO
San Francisco
$279

Roundtrip

found 6 days ago

Open BOS to SFO flights search result page

SFO From BOS Economy Coach Packages on Similar Airlines

Save $220
BOS
Logan Intl.
to
SFO
San Francisco Intl.
UnitedEconomy
InterContinental Mark Hopkins, an IHG Hotel
4.0 out of 5.0

Wed, Sep 15 - Mon, Sep 20

Old price

$1,034

The price now is $814 per person
Flight + Hotel
InterContinental Mark Hopkins, an IHG Hotel
Save $355
BOS
Logan Intl.
to
SFO
San Francisco Intl.
UnitedEconomy
The Donatello
3.5 out of 5.0

Wed, Sep 15 - Mon, Sep 20

Old price

$1,681

The price now is $1,326 per person
Flight + Hotel
The Donatello
Save $185
BOS
Logan Intl.
to
SFO
San Francisco Intl.
UnitedEconomy
San Francisco Marriott Marquis
4.0 out of 5.0

Wed, Sep 15 - Mon, Sep 20

Old price

$951

The price now is $766 per person
Flight + Hotel
San Francisco Marriott Marquis
FAQs about United Airlines Flights from BOS to SFO
Can I catch a flight from Boston, MA (BOS-Logan Intl.) to San Francisco, CA (SFO-San Francisco Intl.) right now?

For info on any current San Francisco, CA (SFO-San Francisco Intl.) travel advice and quarantine requirements, visit the Covid-19 Travel Advisor. Look before you book your flight, so you don't get caught up.

What terminal is United Airlines at BOS?

Before you set off from BOS to San Francisco Intl. Airport (SFO) with United Airlines, it might be a good idea to contact the airline to find out your terminal information. While your ticket should hold some of the relevant details, there's no guarantee.

Are there United Airlines non-stop flights from BOS to SFO?

United Airlines doesn't offer direct flights between BOS and San Francisco Intl. Airport (SFO), so plan to make at least one stopover. If you have enough time between flights, browse the airport shops while waiting for your connection.

If I am not able to travel due to COVID-19, can I change my booking to a later date?

For more info about changing your flight to SFO, please visit our Customer Service Portal.

What is the best day to buy a plane ticket?

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2020. Wednesday and Friday prices are also good, but you may want to prepare your budget if booking on a Sunday, as data shows the end of the week is when prices are generally at their highest.

What are the cheapest days to fly?

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2020, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

How far in advance can you book a flight?

Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2020 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2 weeks to 2 months prior to their travel dates.

How can I save money on airline tickets?

We'll let you in on a secret...You can save big on flights if you mix and match your airlines and fare types. In fact, travelers who booked flights on Travelocity in 2020 saved nearly 40% when their return flights consisted of two different airlines or fare types.

*According to flight demand on Travelocity.com from January to December 2020. Savings are subject to change based on departure location, date and destination.

Carrier Flight Depart BOS Arrive SFO Wed
6/23		 Thu
6/24		 Fri
6/25		 Sat
6/26		 Sun
6/27		 Mon
6/28		 Tue
6/29		 Stops
UA 477 08:40 am 12:00 pm Check fare Check fare Check fare Check fare Check fare Check fare Check fare 0 stop(s)
UA 2378 01:30 pm 04:50 pm Check fare Check fare Check fare Check fare Check fare Check fare - 0 stop(s)

Travelers ❤️ these 🏨 after their flight to San Francisco

Price for 1 night 2 adults*

SFO Airport Hotel, El Rancho Inn BW Signature Collection
SFO Airport Hotel, El Rancho Inn BW Signature Collection
3.0 out of 5.0 1100 El Camino Real, Millbrae, CA
$93

Per night/room

Jun 29 - Jun 30

4.1/5 (41 reviews)

Friendly concierge Clean room Close to airport

Reviewed on May 23, 2021
This motel doesn't skimp on freebies - guests receive free continental breakfast, free WiFi, and free self parking. Traveling on business? Take advantage of ...
Grand Hyatt at SFO
Grand Hyatt at SFO
4.0 out of 5.0 55 S McDonnell Rd, San Francisco, CA
$229

Per night/room

Jul 9 - Jul 10

4.9/5 (13 reviews)

The hotel is at the airport. You can't beat that!!

Reviewed on Apr 27, 2021
This hotel features a restaurant, a 24-hour fitness center, and a bar/lounge. Traveling on business? Take advantage of the free WiFi in public areas, laundry ...
Aloft San Francisco Airport
Aloft San Francisco Airport
3.0 out of 5.0 401 E Millbrae Ave, Millbrae, CA
$123

Per night/room

Jun 25 - Jun 26

4.2/5 (18 reviews)

We called ahead to tell Hotel Riu Plaza our plane was delayed and we would not be in until early the next day. We were told they would hold our room so we could rest a bit before check out. The next morning I called them and they had canceled my booking and wanted me to pay for another night I had ...

Reviewed on Jun 14, 2021
This hotel features a fitness center and a bar/lounge. Traveling on business? Take advantage of the business center, free WiFi in public areas, and free airport ...