$110 Cheap Flights from Baltimore (BWI) to San Francisco (SFO)

View $110 flight on Mon, Oct 27, 2025Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to San Francisco Intl. Airport (SFO)

Cheap Flights from Baltimore to San Francisco (BWI-SFO)

Prices were available within the past 7 days and start at $110 for one-way flights and $187 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Oct 9 - Fri, Oct 10
BWI
Baltimore
SFO
San Francisco
$187 Roundtrip, just found
$187
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Oct 9 from Baltimore to San Francisco, returning Fri, Oct 10, priced at $187 just found
Frontier Airlines
Thu, Oct 9 - Fri, Oct 10
BWI
Baltimore
SFO
San Francisco
$189 Roundtrip, just found
$189
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Oct 9 from Baltimore to San Francisco, returning Fri, Oct 10, priced at $189 just found
Frontier Airlines
Fri, Oct 24 - Sun, Oct 26
BWI
Baltimore
SFO
San Francisco
$191 Roundtrip, just found
$191
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Oct 24 from Baltimore to San Francisco, returning Sun, Oct 26, priced at $191 just found
Frontier Airlines
Mon, Sep 29 - Mon, Oct 6
BWI
Baltimore
SFO
San Francisco
$191 Roundtrip, just found
$191
Roundtrip
just found
Select Frontier Airlines flight, departing Mon, Sep 29 from Baltimore to San Francisco, returning Mon, Oct 6, priced at $191 just found
Frontier Airlines
Thu, Oct 23 - Sun, Nov 2
BWI
Baltimore
SFO
San Francisco
$210 Roundtrip, just found
$210
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Oct 23 from Baltimore to San Francisco, returning Sun, Nov 2, priced at $210 just found
Frontier Airlines
Thu, Oct 23 - Sun, Oct 26
BWI
Baltimore
SFO
San Francisco
$212 Roundtrip, just found
$212
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Oct 23 from Baltimore to San Francisco, returning Sun, Oct 26, priced at $212 just found
Southwest Airlines
Sat, Nov 22 - Tue, Dec 2
BWI
Baltimore
SFO
San Francisco
$279 Roundtrip, just found
$279
Roundtrip
just found
Select Southwest Airlines flight, departing Sat, Nov 22 from Baltimore to San Francisco, returning Tue, Dec 2, priced at $279 just found
Sun Country Airlines
Fri, Oct 24 - Thu, Oct 30
BWI
Baltimore
SFO
San Francisco
$347 Roundtrip, found 8 hours ago
$347
Roundtrip
found 8 hours ago
Select Sun Country Airlines flight, departing Fri, Oct 24 from Baltimore to San Francisco, returning Thu, Oct 30, priced at $347 found 8 hours ago
American Airlines
Wed, Oct 15 - Mon, Oct 20
BWI
Baltimore
SFO
San Francisco
$384 Roundtrip, just found
$384
Roundtrip
just found
Select American Airlines flight, departing Wed, Oct 15 from Baltimore to San Francisco, returning Mon, Oct 20, priced at $384 just found
United
Sat, Dec 6 - Tue, Dec 16
BWI
Baltimore
SFO
San Francisco
$397 Roundtrip, just found
$397
Roundtrip
just found
Select United flight, departing Sat, Dec 6 from Baltimore to San Francisco, returning Tue, Dec 16, priced at $397 just found

Find the cheapest month to fly from Baltimore (BWI) to San Francisco (SFO)

April is typically the cheapest month to fly

From $140 - $503 per traveler.

Alternative airports near San Francisco

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Norman Y. Mineta San Jose Intl. SJC. Average driving time to city center is 50 minutes. Flights from $404
SJC
Norman Y. Mineta San Jose Intl.
Average driving time to city center50 min
Flights from $404
Select flight to Oakland Intl. OAK. Average driving time to city center is 26 minutes. Flights from $394
OAK
Oakland Intl.
Average driving time to city center26 min
Flights from $394
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, Hawaiian Airlines, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$186
Distance
2451 mi
Average flight time
3 hours 28 mins

Baltimore to San Francisco Flights

The cheapest times to fly from Baltimore to San Francisco

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Baltimore to San Francisco are during the month of October. You can find some of the cheapest flights from Baltimore to San Francisco with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Baltimore to San Francisco

Sunday is one of the best days to book for cheap flights from Baltimore to San Francisco: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Baltimore to San Francisco

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Baltimore to San Francisco in 2025. You can also book with separate airlines for your outbound and return journeys, from $110 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Baltimore to San Francisco flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Baltimore to San Francisco airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO) cost?
Lock in a cheap one-way flight from $110 or cheap return flight from $187 from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO)?
The cheapest month to fly from BWI to SFO is October, when demand is low. Off-peak months are typically when airlines offer lower prices between these airports.
Which airlines fly direct from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO)?
When departing from Baltimore Washington Intl. Thurgood Marshall Airport (BWI), you can take a nonstop flight to San Francisco Intl. Airport (SFO) with United Airlines.
What is the cheapest airline that flies from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO)?
While prices can vary depending on your travel dates, budget airlines like ANA and Virgin Australia are often the cheapest options for flights between Baltimore Washington Intl. Thurgood Marshall Airport (BWI) and San Francisco Intl. Airport (SFO). Use Expedia's search tool to compare carriers and find the one that offers the best deal for your BWI to SFO flight.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO)?
On average, you'll only find 1 nonstop flight departing from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO) per day. If this doesn't work for you, check out flights with a layover. Just filter your search on Expedia to include one stop or more to find the next best option.
What are the most popular departure times for flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO)?
The 6 AM departures from BWI to SFO are typically the busiest. These flights can come with a higher price due to their popularity. If you're hoping to save money, choose a less crowded time to fly.
What day of the week has the most flights from BWI to SFO?
Friday has the most flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO). Consider traveling on this day and you'll have a greater chance of finding a departure that fits your plans.
What is the earliest flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO)?
Hop on the earliest flight at around 6:05AM UTC-5, leaving from Baltimore Washington Intl. Thurgood Marshall Airport (BWI). You'll be traveling for about 6h 24m, coming in to land at San Francisco Intl. Airport (SFO) at approximately 9:29AM UTC-8.
How long does it take to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO)?
The average flight duration from BWI to SFO is 6 hours and 24 minutes, covering a distance of 2,500 mi.
What airline has the least delays from BWI to SFO?
United Airlines has the best track record for on-time direct flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO), with an on-time rating of 82%. Use the Expedia App to check your journey status before you leave and get real-time alerts about any trip changes.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO)?
Select a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO) that leaves before 3 PM to reduce the risk of cancellations. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for San Francisco from Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
If you're on a direct flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco, San Francisco Intl. Airport (SFO) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO) last-minute?
Last-minute bookings from BWI to SFO are typically more expensive. To secure the cheapest rates, start searching for flights ahead of time. That being said, if you can play around with your travel dates, you may land a cheap fare just before your departure.
Is it cheaper to book a BWI to SFO flight and hotel package?
Securing a BWI to SFO flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our impressive range of accommodations and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to San Francisco Intl. Airport (SFO)?
If you reserved your BWI to SFO flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

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*Available to One Key members.