$69 Cheap United flights Boise (BOI) to San Francisco (SFO)

View $69 flight on Sat, Sep 20, 2025Opens in a new window

$69 Cheap United flights Boise (BOI) to San Francisco (SFO)

Prices were available within the past 7 days and start at $69 for one-way flights and $137 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Oct 4 - Tue, Oct 7
BOI
Boise
SFO
San Francisco
$137 Roundtrip, found 1 hour ago
$137
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Oct 4 from Boise to San Francisco, returning Tue, Oct 7, priced at $137 found 1 hour ago
United
Sat, Sep 20 - Tue, Sep 23
BOI
Boise
SFO
San Francisco
$163 Roundtrip, found 1 hour ago
$163
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Sep 20 from Boise to San Francisco, returning Tue, Sep 23, priced at $163 found 1 hour ago
United
Wed, Sep 17 - Sat, Sep 20
BOI
Boise
SFO
San Francisco
$171 Roundtrip, found 1 hour ago
$171
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Sep 17 from Boise to San Francisco, returning Sat, Sep 20, priced at $171 found 1 hour ago
United
Tue, Jan 6 - Thu, Jan 8
BOI
Boise
SFO
San Francisco
$181 Roundtrip, found 3 days ago
$181
Roundtrip
found 3 days ago
Select United flight, departing Tue, Jan 6 from Boise to San Francisco, returning Thu, Jan 8, priced at $181 found 3 days ago
United
Sat, Oct 4 - Tue, Oct 7
BOI
Boise
SFO
San Francisco
$185 Roundtrip, found 1 hour ago
$185
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Oct 4 from Boise to San Francisco, returning Tue, Oct 7, priced at $185 found 1 hour ago
United
Thu, Oct 16 - Sat, Oct 18
BOI
Boise
SFO
San Francisco
$186 Roundtrip, found 3 days ago
$186
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 16 from Boise to San Francisco, returning Sat, Oct 18, priced at $186 found 3 days ago
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Flights from Boise (BOI) to San Francisco (SFO)
Origin airport
Boise
Destination airport
San Francisco Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Popular airline
Alaska Airlines
Distance
523 mi

Frequently asked questions

How much is a United Airlines flight from Boise Airport (BOI) to San Francisco Intl. Airport (SFO)?
Use the "Price (lowest to highest)" filter on Expedia to look for cheap United Airlines return flights from $137 from BOI to SFO. Affordable one-way options from $69 are also on offer.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from BOI to SFO with United Airlines?
Browse for return or one-way flights to San Francisco in February or April. You could find lower fares with United Airlines during these off-peak times.
What is the cheapest time to book flights from Boise Airport (BOI) to San Francisco Intl. Airport (SFO) with United Airlines?
To find cheap United Airlines fares from Boise Airport (BOI) to San Francisco Intl. Airport (SFO), start searching one to three months before your planned departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact the overall price. Sunday is generally the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Boise Airport (BOI) to San Francisco Intl. Airport (SFO)?
Jet off on one of United Airlines's 28 direct weekly flights from Boise Airport (BOI) to San Francisco Intl. Airport (SFO). To see your choices, enter your origin, dates and destination and hit search. Then select the "Nonstop" and "Airline" filters.
How long does it take to fly from BOI to SFO with United Airlines?
It takes around 2h 7m to travel nonstop from Boise Airport (BOI) to San Francisco Intl. Airport (SFO) with United Airlines.
Which day of the week has the most United Airlines flights from Boise Airport (BOI) to San Francisco Intl. Airport (SFO)?
United Airlines operates the most flights from Boise Airport (BOI) to San Francisco Intl. Airport (SFO) on Thursday. With up to 4 daily departures, you'll get the most options and flexibility on this day.
What is the earliest United Airlines flight from BOI to SFO?
The earliest flight from BOI to SFO with United Airlines leaves at 7:21AM UTC-7. You'll touch down at 8:40AM UTC-8. The final United Airlines flight of the day takes off at 7:15PM UTC-7 and arrives at 8:14PM UTC-8. With around 20% fewer cancellations for morning and mid-morning departures, jetting out early is usually the smartest option.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in San Francisco?
San Francisco Intl. Airport (SFO) is the main San Francisco gateway for United Airlines flights from Boise Airport (BOI). Oakland Intl. Airport (OAK) and Norman Y. Mineta San Jose Intl. Airport (SJC) are two other options. When planning your trip through Expedia, check the "All Airports" option for your destination to see everything that's available.
Why fly with United Airlines from BOI to SFO?
A rewarding loyalty program and the chance to rack up points through United Mileage Plus are the start of the reasons to travel from BOI to SFO with United Airlines. Plus, when you join our One Key™ program, you can earn OneKeyCash™* alongside any airline loyalty program earnings. It's yours to use wherever your next trip takes you.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does United Airlines fly from Boise Airport (BOI) to San Francisco Intl. Airport (SFO)?
For the Boise Airport (BOI) to San Francisco Intl. Airport (SFO) route, United Airlines typically uses Embraer 175 and Airbus A319 planes. Keep in mind that last-minute changes are possible for operational reasons, meaning your flight may be on a different aircraft.
Can I change or cancel my United Airlines flight from Boise Airport (BOI) to San Francisco Intl. Airport (SFO)?
Depending on the type of ticket you purchased, a fee may apply if you cancel or change your booking more than 24 hours after it's been confirmed. To find plane tickets with more flexibility, select our "Changes included" and "No cancel fee" boxes when searching for flights. For additional information on modifying or canceling your reservation, visit "Trips," select your flight and click on "Manage Booking."

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*Available to One Key members.