San Francisco

$90+ Cheap flights from Baltimore to San Francisco (BWI - SFO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — SFO
Feb 7 — Feb 141
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Find cheap flights from Baltimore to San Francisco with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Baltimore/Washington to San Francisco are usually found in May or September, booked 89 days in advance, depart on a Thursday or Friday and return on a Tuesday

Cheap flight deals from Baltimore to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 8, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$303
(Kiwi.com)

One-way from

$90
(Frontier)

Popular in

December

Cheapest in

May

Average price

$485
Provider with most accurate pricing for Baltimore/Washington-San Francisco flight deals.
Provider most trusted by Cheapflights users for Baltimore/Washington-San Francisco flights.
From Baltimore/Washington to San Francisco
One-way flight from Baltimore/Washington to San Francisco
Highest demand for flights based on searches. 8% potential increase in price ($44 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Average for round-trip flights in January 2026

Find flight deals from Baltimore to San Francisco

Cheapest flights from Baltimore to San Francisco
Explore the most affordable flight options available from Baltimore to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 8, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1212:12 pmBWI - SFO
1 stop24h 21mFrontier
Thu 2/1911:09 pmSFO - BWI
1 stop17h 35mFrontier
Deal found 1/6$303
This Kiwi.com deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/146:00 amBWI - SFO
1 stop10h 24mFrontier
Sat 1/172:24 pmSFO - BWI
2 stops27h 41mFrontier
Deal found 1/7$304
This Kiwi.com deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:58 pmBWI - SFO
2 stops41h 10mFrontier
Sun 2/1510:58 pmSFO - BWI
1 stop22h 33mFrontier
Deal found 1/7$306
This Kiwi.com deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/136:05 amBWI - SFO
1 stop10h 19mFrontier
Wed 1/212:08 pmSFO - BWI
2 stops17h 18mFrontier
Deal found 1/7$307
This Kiwi.com deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/126:05 amBWI - SFO
1 stop16h 09mFrontier
Sun 3/1510:35 pmSFO - BWI
2 stops23h 06mFrontier
Deal found 1/7$308
This Kiwi.com deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/66:00 amBWI - SFO
2 stops16h 38mFrontier
Tue 2/1010:58 pmSFO - BWI
1 stop15h 49mFrontier
Deal found 1/7$309
This Frontier deal was found by Cheapflights users on 1/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/266:05 amBWI - SFO
1 stop16h 09mFrontier
Sun 4/511:20 pmSFO - BWI
1 stop11h 30mFrontier
Deal found 1/6$310
This Alaska Airlines deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/117:14 pmBWI - SFO
1 stop31h 45mAlaska Airlines
Wed 2/186:30 amSFO - BWI
1 stop8h 16mAlaska Airlines
Deal found 1/7$311
This Alaska Airlines deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/236:46 pmBWI - SFO
2 stops25h 07mAlaska Airlines
Mon 3/29:32 pmSFO - BWI
2 stops17h 14mAlaska Airlines
Deal found 1/7$312
This United Airlines deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/28:42 amBWI - SFO
Nonstop6h 11mUnited Airlines
Thu 2/59:09 amSFO - BWI
Nonstop5h 17mUnited Airlines
Deal found 1/7$313
This Delta deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/278:45 amBWI - SFO
2 stops12h 04mDelta
Fri 1/3010:30 amSFO - BWI
2 stops9h 35mDelta
Deal found 1/7$314
This Alaska Airlines deal was found by Cheapflights users on 1/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/307:14 pmBWI - SFO
1 stop21h 46mAlaska Airlines
Mon 2/26:18 pmSFO - BWI
1 stop20h 56mAlaska Airlines
Deal found 1/7$315

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 8, 2026.
Use the filters below to find and compare flights from Baltimore to San Francisco that are best for you.

Fly from

Baltimore

Fly to

San Francisco

Route

Depart

Return

Price

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Tue 2/10

8:42 am-11:54 am

Nonstop6h 12m

San Francisco

Mon 2/23

9:09 am-5:20 pm

Nonstop5h 11m

$313

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Tue 3/17

6:55 pm-10:05 pm

Nonstop6h 10m

San Francisco

Mon 4/6

9:20 pm-5:30 am

Nonstop5h 10m

$313

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Wed 2/18

8:42 am-12:06 pm

Nonstop6h 24m

San Francisco

Tue 2/24

9:09 am-5:20 pm

Nonstop5h 11m

$313

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Mon 2/23

6:40 pm-9:55 pm

Nonstop6h 15m

San Francisco

Mon 3/2

9:30 pm-5:30 am

Nonstop5h 00m

$313

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Thu 2/26

8:42 am-12:06 pm

Nonstop6h 24m

San Francisco

Mon 3/2

11:13 pm-7:27 am

Nonstop5h 14m

$313

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Thu 2/5

8:07 am-4:50 pm

1 stop11h 43m

San Francisco

Thu 2/12

9:09 am-5:20 pm

Nonstop5h 11m

$323

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Wed 2/18

4:09 pm-11:17 pm

1 stop10h 08m

San Francisco

Tue 3/3

9:09 am-5:20 pm

Nonstop5h 11m

$323

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Thu 2/5

6:34 pm-9:45 pm

Nonstop6h 11m

San Francisco

Tue 2/10

10:52 am-9:26 pm

1 stop7h 34m

$323

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Mon 2/9

7:14 pm-5:48 pm

2 stops25h 34m

San Francisco

Sat 2/28

6:30 am-5:46 pm

1 stop8h 16m

$332

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Thu 3/5

6:13 am-11:50 am

1 stop8h 37m

San Francisco

Mon 3/9

6:55 pm-5:05 am

1 stop7h 10m

$333

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 20 results
1
2

Compare providers for flights from Baltimore to San Francisco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Baltimore to San Francisco in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Baltimore-San Francisco flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Baltimore-San Francisco flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Baltimore-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Baltimore-San Francisco flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Baltimore-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Baltimore to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Baltimore with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Baltimore to San Francisco

How far ahead should I book a flight from Baltimore to San Francisco?

Use this chart to determine the optimal time to book a round-trip flight from Baltimore to San Francisco. Price data was last updated on January 2, 2026.

The best time to book flights from Baltimore to San Francisco is 89 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Baltimore to San Francisco?

Currently, March is the cheapest month in which you can book a flight from Baltimore to San Francisco (average of $102). Flying from Baltimore to San Francisco in November is currently the most expensive (average of $195). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BWI to SFO?

Find hourly flight availability from Baltimore to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 8, 2026.

One of the essential ways to save on airfare from Baltimore to San Francisco is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 54% on airfare.

The best insider tips for Baltimore to San Francisco flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Baltimore to San Francisco trip
Airports
BWI

For early morning flights, arrive 20-30 minutes early to navigate busy security lines efficiently.

SFO

Use BART for a cost-effective trip from SFO to downtown San Francisco, taking about 40 minutes.

Our travel experts
Emily Zemler

Emily Zemler

Expert on BWI

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more
Harriet Baskas

Harriet Baskas

Expert on SFO

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated January 8, 2026.
Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Baltimore to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Overall

8.0

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Baltimore to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airports do I use to fly from Baltimore to San Francisco?

    If you book a flight from Baltimore to San Francisco, you will be flying from Baltimore/Washington to San Francisco. Flights to San Francisco (SFO) from Baltimore/Washington (BWI) take 5h 45m for a nonstop flight. There are 5 flights from Baltimore/Washington to San Francisco per day from 8 airlines.

  • How popular is this Baltimore to San Francisco flight route?

  • How long is the flight from Baltimore to San Francisco?

    Departing from Baltimore to San Francisco will take you 6h 10m. The distance between Baltimore and San Francisco is about 2449 mi. All flights are typically nonstop.

  • What are the cheapest airlines flying from Baltimore to San Francisco round-trip?

    Currently priced at $105, Frontier will fly you from Baltimore to San Francisco and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Spirit Airlines and Sun Country Air - these airlines can fly you to your destination from $134 and $142, respectively. Frontier is 77% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Baltimore to San Francisco one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $89. However, be on the lookout for offers from American Airlines and Sun Country Air, as they are both options that can get you from Baltimore to San Francisco for a low price.

  • What are the most reliable airlines from Baltimore to San Francisco?

    Consider Air New Zealand (82%), United Airlines (77%) or Virgin Australia (70%) when booking your flight. These represent the most reliable airlines when flying from Baltimore to San Francisco.

  • What are the cheapest flights from Baltimore to San Francisco?

    Looking at all options, your cheapest flight can be booked for $158. While the most popular route (Baltimore/Washington - San Francisco) can be booked for $186 on average, our data indicates $1,556 when flying from Baltimore to San Francisco.

  • Can I find deals for flights from Baltimore to San Francisco that include hotel bookings?

    Yes. In addition to deals on Baltimore to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Baltimore to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Baltimore to San Francisco.

  • Can I find deals for business class flights from Baltimore to San Francisco?

    Yes. Cheapflights offers flight deals from Baltimore to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Baltimore to San Francisco?

    Currently, March is the cheapest month in which you can book a flight from Baltimore to San Francisco (average of $102). Flying from Baltimore to San Francisco in November is currently the most expensive (average of $195). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
South San Francisco
Santa Cruz
Santa Clara
Livermore
Watsonville
Redwood City
Sunnyvale
San Bruno
Daly City
Manteca
Turlock
San Carlos
San Ramon
Vallejo
San Lorenzo
Hollister
Foster City
Union City
Davis

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Baltimore to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Top 8 airlines flying from Baltimore to San Francisco

Discover the top 8 airlines that operate flights from Baltimore to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$123Average$285FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$134Average$543FlexibilityNo cancel feeOn-time65%
Sun Country AirCheapest$162Average$365FlexibilityNo cancel feeOn-time83%
United AirlinesCheapest$289Average$488FlexibilityNo cancel feeOn-time69%
DeltaCheapest$296Average$407FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$298Average$455FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$308Average$397FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$308Average$465FlexibilityNo cancel feeOn-time71%

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