San Francisco

$159+ 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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — SFO
Mar 21 — Mar 281
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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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Cheapflights Tip: The best prices from Baltimore/Washington to San Francisco are usually found in May or September, booked 31 days in advance, depart on a Thursday or Friday and return on a Wednesday

Cheap 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 February 19, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/17. 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 3/313:19 pm
BWI
-
SFO
2 stops26h 57m
Frontier
Tue 5/510:38 pm
SFO
-
BWI
1 stop15h 21m
Frontier
Deal found 2/17$301
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 3/253:19 pm
BWI
-
SFO
1 stop30h 55m
Frontier
Mon 4/610:50 pm
SFO
-
BWI
2 stops36h 33m
Frontier
Deal found 2/17$302
This Kiwi.com deal was found by Cheapflights users on 2/15. 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 3/205:31 am
BWI
-
SFO
1 stop16h 43m
Frontier
Wed 3/256:00 am
SFO
-
BWI
2 stops15h 41m
Frontier
Deal found 2/15$303
This Kiwi.com deal was found by Cheapflights users on 2/15. 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.
Sun 3/88:10 am
BWI
-
SFO
2 stops34h 16m
Frontier
Tue 3/1710:40 pm
SFO
-
BWI
1 stop12h 44m
Frontier
Deal found 2/15$304
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 3/36:20 am
BWI
-
SFO
2 stops18h 19m
Multiple Airlines
Wed 3/1110:38 pm
SFO
-
BWI
1 stop12h 46m
Multiple Airlines
Deal found 2/17$305
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 4/247:34 pm
BWI
-
SFO
1 stop24h 20m
Multiple Airlines
Fri 5/15:49 pm
SFO
-
BWI
2 stops19h 22m
Multiple Airlines
Deal found 2/17$306
This Kiwi.com deal was found by Cheapflights users on 2/17. 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 3/46:00 am
BWI
-
SFO
1 stop18h 39m
Frontier
Tue 3/1010:40 pm
SFO
-
BWI
1 stop12h 44m
Frontier
Deal found 2/17$307
This Kiwi.com deal was found by Cheapflights users on 2/15. 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.
Mon 3/24:45 pm
BWI
-
SFO
2 stops31h 54m
Multiple Airlines
Mon 3/910:38 pm
SFO
-
BWI
1 stop12h 46m
Multiple Airlines
Deal found 2/15$308
This Kiwi.com deal was found by Cheapflights users on 2/17. 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.
Sat 3/216:05 am
BWI
-
SFO
1 stop16h 09m
Frontier
Tue 3/247:32 pm
SFO
-
BWI
2 stops26h 09m
Frontier
Deal found 2/17$309
This Frontier deal was found by Cheapflights users on 2/16. 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.
Sun 5/106:05 am
BWI
-
SFO
1 stop13h 49m
Frontier
Thu 5/1411:16 pm
SFO
-
BWI
1 stop7h 57m
Frontier
Deal found 2/16$310
This Travelocity deal was found by Cheapflights users on 2/15. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/139:07 am
BWI
-
SFO
1 stop10h 47m
Multiple Airlines
Wed 5/206:40 am
SFO
-
BWI
1 stop20h 48m
Multiple Airlines
Deal found 2/15$312

Find 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 February 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$301
(Kiwi.com)

One-way from

$159
(Southwest)

Popular in

December

Cheapest in

May

Average price

$480
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 ($42 potential increase over avg. RT price).
Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
Average for round-trip flights in February 2026

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 February 19, 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 3/31

6:55 pm-10:05 pm

Nonstop6h 10m

San Francisco

Tue 5/5

9:15 pm-5:30 am

Nonstop5h 15m

$317

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Tue 4/7

6:05 am-9:16 am

Nonstop6h 11m

San Francisco

Tue 4/14

12:45 am-11:37 am

1 stop7h 52m

$323

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Wed 4/1

6:55 pm-10:05 pm

Nonstop6h 10m

San Francisco

Wed 4/8

5:25 am-3:50 pm

1 stop7h 25m

$327

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Tue 3/31

5:50 pm-11:59 pm

1 stop9h 09m

San Francisco

Wed 4/29

9:25 pm-6:00 am

Nonstop5h 35m

$327

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Sat 4/4

8:50 pm-11:55 pm

Nonstop6h 05m

San Francisco

Sat 4/11

7:00 am-8:35 pm

1 stop10h 35m

$327

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Sat 3/14

8:50 pm-11:55 pm

Nonstop6h 05m

San Francisco

Wed 3/18

10:55 pm-9:30 am

1 stop7h 35m

$327

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Wed 5/6

2:18 pm-8:24 pm

1 stop9h 06m

San Francisco

Sat 5/9

8:30 am-6:51 pm

1 stop7h 21m

$337

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Tue 4/28

7:04 am-2:21 pm

1 stop10h 17m

San Francisco

Wed 5/6

5:31 pm-5:44 am

1 stop9h 13m

$337

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Sat 4/4

8:50 pm-11:55 pm

Nonstop6h 05m

San Francisco

Tue 4/7

11:25 pm-11:50 am

2 stops9h 25m

$342

BaltimoreSan Francisco

BWI - SFO

BWISFO

Baltimore/Washington

Fri 4/17

8:15 pm-11:20 pm

Nonstop6h 05m

San Francisco

Tue 4/21

9:15 pm-5:30 am

Nonstop5h 15m

$367

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/18

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Baltimore-San Francisco flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 February 18, 2026.

The best time to book flights from Baltimore to San Francisco is 31 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 February is currently the most expensive (average of $212). 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 February 19, 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
Our travel experts
Emily Zemler

Emily Zemler

Expert on BWI

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.

Harriet Baskas

Harriet Baskas

Expert on SFO

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.

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 February 19, 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.

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

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.

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

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.

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

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.

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

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.

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

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.

Crew

8.6

Comfort

8.0

Overall

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

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 40m for a nonstop flight. There are 5 flights from Baltimore/Washington to San Francisco per day from 7 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 Sun Country Air and Delta - these airlines can fly you to your destination from $142 and $253, 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 $92. 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 (80%), Virgin Australia (70%) or United Airlines (68%) 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 $156. While the most popular route (Baltimore/Washington - San Francisco) can be booked for $244 on average, our data indicates $1,204 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 February is currently the most expensive (average of $212). 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
South San Francisco
Santa Cruz
Santa Clara
Livermore
Roseville
Watsonville
San Bruno
Daly City
Sunnyvale
Turlock
Vacaville
San Carlos
San Ramon
Redwood City
Rancho Cordova
San Lorenzo
Davis
Hollister
Manteca
Union City

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 7 airlines flying from Baltimore to San Francisco

Discover the top 7 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 February 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$105Average$280FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$142Average$335FlexibilityNo cancel feeOn-time83%
DeltaCheapest$253Average$402FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$286Average$499FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$292Average$462FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$308Average$357FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$308Average$453FlexibilityNo cancel feeOn-time71%

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