$159 Cheap United flights Baltimore (BWI) to San Francisco (SFO)

View $159 flight on Tue, Sep 23, 2025Opens in a new window

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$159 Cheap United flights Baltimore (BWI) to San Francisco (SFO)

Prices were available within the past 7 days and start at $159 for one-way flights and $292 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Oct 25 - Tue, Nov 4
BWI
Baltimore
SFO
San Francisco
$292 Roundtrip, found 1 hour ago
$292
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Oct 25 from Baltimore to San Francisco, returning Tue, Nov 4, priced at $292 found 1 hour ago
United
Sun, Oct 26 - Tue, Nov 4
BWI
Baltimore
SFO
San Francisco
$308 Roundtrip, found 3 hours ago
$308
Roundtrip
found 3 hours ago
Select United flight, departing Sun, Oct 26 from Baltimore to San Francisco, returning Tue, Nov 4, priced at $308 found 3 hours ago
United
Sat, Nov 8 - Wed, Nov 12
BWI
Baltimore
SFO
San Francisco
$312 Roundtrip, found 6 hours ago
$312
Roundtrip
found 6 hours ago
Select United flight, departing Sat, Nov 8 from Baltimore to San Francisco, returning Wed, Nov 12, priced at $312 found 6 hours ago
United
Sat, Sep 20 - Sat, Oct 4
BWI
Baltimore
SFO
San Francisco
$313 Roundtrip, just found
$313
Roundtrip
just found
Select United flight, departing Sat, Sep 20 from Baltimore to San Francisco, returning Sat, Oct 4, priced at $313 just found
United
Sat, Sep 20 - Sat, Oct 4
BWI
Baltimore
SFO
San Francisco
$316 Roundtrip, just found
$316
Roundtrip
just found
Select United flight, departing Sat, Sep 20 from Baltimore to San Francisco, returning Sat, Oct 4, priced at $316 just found
United
Sat, Aug 23 - Mon, Aug 25
BWI
Baltimore
SFO
San Francisco
$317 Roundtrip, just found
$317
Roundtrip
just found
Select United flight, departing Sat, Aug 23 from Baltimore to San Francisco, returning Mon, Aug 25, priced at $317 just found
Flights from Baltimore (BWI) to San Francisco (SFO)
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
San Francisco Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, Sun Country Airlines, United
Popular airline
Delta
Distance
2451 mi
Average flight time
3 hours 35 mins

Frequently asked questions

How much is a United Airlines flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO)?
Make use of the "Price (lowest to highest)" filter on Expedia to find cheap United Airlines return flights from $292 from BWI to SFO. Affordable one-way tickets from $159 are available as well.**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 BWI to SFO with United Airlines?
Look 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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO) with United Airlines?
To find cheap United Airlines fares from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) 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 influence the overall price. Sunday is typically the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking 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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO)?
United Airlines offers direct flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO), with 7 weekly departures. Just apply the "Nonstop" and "Airline" filters during your search on Expedia to show all direct United Airlines flights to SFO.
How long does it take to fly from BWI to SFO with United Airlines?
From wheels-up to touchdown, a nonstop United Airlines flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO) typically takes 6h 24m.
What is the earliest United Airlines flight from BWI to SFO?
The first United Airlines flight from BWI to SFO departs at 6:05AM UTC-5, arriving at 9:29AM UTC-8. If you want to jet off later in the day, the last United Airlines flight leaves BWI at 6:15AM UTC-5 and touches down at SFO at 9:39AM UTC-8. Flying before midday is generally a good option as morning and mid-morning flights are less likely to be canceled.**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?
Jump on a United Airlines flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco, and you'll probably arrive at San Francisco Intl. Airport (SFO). This is the airline's main hub in this destination.
Why fly with United Airlines from BWI to SFO?
A rewarding loyalty program and the ability to rack up points through United Mileage Plus are the start of the reasons to depart from BWI to SFO with United Airlines. Plus, when you join Expedia's free One Key™ program, you can earn OneKeyCash™* in addition to United Airlines's loyalty program earnings. It's yours to spend on future bookings.*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 Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO)?
United Airlines typically uses Boeing 737 MAX 8 planes for flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO). This carrier also operates the Boeing 737-900 on this route. Remember that aircraft type can change due to operational needs, so the plane you catch could be different when you travel.
Can I change or cancel my United Airlines flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO)?
Depending on your fare type, a fee will generally apply if you modify or cancel your flight more than 24 hours after it's been confirmed. To secure flexible plane tickets, select our "Changes included" and "No cancel fee" boxes while searching for flights. To learn more about modifying or canceling your reservation, visit "Trips," select your flight and tick "Manage Booking."

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