Flights from Baltimore to San Francisco

Cheapest flights from Baltimore

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 12 - Wed, Aug 13

BWI

Baltimore Washington Intl. Thurgood Marshall

SJO

Juan Santamaría Intl.

$322 Roundtrip, found 4 hours ago

$322

Roundtrip

found 4 hours ago

Select Spirit Airlines flight, departing Tue, Aug 12 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Wed, Aug 13, priced at $322 found 4 hours ago

Mon, Aug 11 - Sat, Aug 16

DCA

Ronald Reagan Washington National

SJO

Juan Santamaría Intl.

$327 Roundtrip, found 22 hours ago

$327

Roundtrip

found 22 hours ago

Select JetBlue Airways flight, departing Mon, Aug 11 from Ronald Reagan Washington National to Juan Santamaría Intl., returning Sat, Aug 16, priced at $327 found 22 hours ago

Tue, Aug 12 - Tue, Aug 19

BWI

Baltimore Washington Intl. Thurgood Marshall

SJO

Juan Santamaría Intl.

$330 Roundtrip, found 4 hours ago

$330

Roundtrip

found 4 hours ago

Select Spirit Airlines flight, departing Tue, Aug 12 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Tue, Aug 19, priced at $330 found 4 hours ago

Mon, Aug 11 - Sat, Aug 16

BWI

Baltimore Washington Intl. Thurgood Marshall

SJO

Juan Santamaría Intl.

$332 Roundtrip, found 4 hours ago

$332

Roundtrip

found 4 hours ago

Select Copa flight, departing Mon, Aug 11 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Sat, Aug 16, priced at $332 found 4 hours ago

Sun, Aug 10 - Wed, Aug 13

DCA

Ronald Reagan Washington National

SJO

Juan Santamaría Intl.

$334 Roundtrip, found 5 days ago

$334

Roundtrip

found 5 days ago

Select Delta flight, departing Sun, Aug 10 from Ronald Reagan Washington National to Juan Santamaría Intl., returning Wed, Aug 13, priced at $334 found 5 days ago

Mon, Aug 11 - Sat, Aug 16

BWI

Baltimore Washington Intl. Thurgood Marshall

SJO

Juan Santamaría Intl.

$334 Roundtrip, found 4 hours ago

$334

Roundtrip

found 4 hours ago

Select American Airlines flight, departing Mon, Aug 11 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Sat, Aug 16, priced at $334 found 4 hours ago

Wed, Aug 13 - Sat, Aug 16

BWI

Baltimore Washington Intl. Thurgood Marshall

SJO

Juan Santamaría Intl.

$338 Roundtrip, found 2 days ago

$338

Roundtrip

found 2 days ago

Select Copa flight, departing Wed, Aug 13 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Sat, Aug 16, priced at $338 found 2 days ago

Mon, Aug 11 - Sat, Aug 16

BWI

Baltimore Washington Intl. Thurgood Marshall

SJO

Juan Santamaría Intl.

$340 Roundtrip, found 4 hours ago

$340

Roundtrip

found 4 hours ago

Select American Airlines flight, departing Mon, Aug 11 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Sat, Aug 16, priced at $340 found 4 hours ago

Mon, Aug 11 - Sat, Aug 16

BWI

Baltimore Washington Intl. Thurgood Marshall

SJO

Juan Santamaría Intl.

$346 Roundtrip, found 4 hours ago

$346

Roundtrip

found 4 hours ago

Select American Airlines flight, departing Mon, Aug 11 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Sat, Aug 16, priced at $346 found 4 hours ago

Mon, Aug 11 - Sat, Aug 16

BWI

Baltimore Washington Intl. Thurgood Marshall

SJO

Juan Santamaría Intl.

$347 Roundtrip, found 4 hours ago

$347

Roundtrip

found 4 hours ago

Select Copa flight, departing Mon, Aug 11 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Sat, Aug 16, priced at $347 found 4 hours ago

Mon, Aug 11 - Sat, Aug 16

DCA

Ronald Reagan Washington National

SJO

Juan Santamaría Intl.

$350 Roundtrip, found 22 hours ago

$350

Roundtrip

found 22 hours ago

Select JetBlue Airways flight, departing Mon, Aug 11 from Ronald Reagan Washington National to Juan Santamaría Intl., returning Sat, Aug 16, priced at $350 found 22 hours ago

Mon, Aug 11 - Sat, Aug 16

BWI

Baltimore Washington Intl. Thurgood Marshall

SJO

Juan Santamaría Intl.

$354 Roundtrip, found 4 hours ago

$354

Roundtrip

found 4 hours ago

Select American Airlines flight, departing Mon, Aug 11 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Sat, Aug 16, priced at $354 found 4 hours ago

Mon, Aug 11 - Sat, Aug 16

DCA

Ronald Reagan Washington National

SJO

Juan Santamaría Intl.

$355 Roundtrip, found 22 hours ago

$355

Roundtrip

found 22 hours ago

Select United flight, departing Mon, Aug 11 from Ronald Reagan Washington National to Juan Santamaría Intl., returning Sat, Aug 16, priced at $355 found 22 hours ago

Wed, Aug 13 - Mon, Aug 18

BWI

Baltimore Washington Intl. Thurgood Marshall

SJO

Juan Santamaría Intl.

$356 Roundtrip, found 4 hours ago

$356

Roundtrip

found 4 hours ago

Select United flight, departing Wed, Aug 13 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Mon, Aug 18, priced at $356 found 4 hours ago

Tue, Aug 12 - Fri, Aug 15

BWI

Baltimore Washington Intl. Thurgood Marshall

SJO

Juan Santamaría Intl.

$357 Roundtrip, found 4 hours ago

$357

Roundtrip

found 4 hours ago

Select Spirit Airlines flight, departing Tue, Aug 12 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Fri, Aug 15, priced at $357 found 4 hours ago

Mon, Aug 11 - Sat, Aug 16

BWI

Baltimore Washington Intl. Thurgood Marshall

SJO

Juan Santamaría Intl.

$360 Roundtrip, found 4 hours ago

$360

Roundtrip

found 4 hours ago

Select American Airlines flight, departing Mon, Aug 11 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Sat, Aug 16, priced at $360 found 4 hours ago

Mon, Aug 11 - Thu, Aug 14

BWI

Baltimore Washington Intl. Thurgood Marshall

SJO

Juan Santamaría Intl.

$362 Roundtrip, found 4 hours ago

$362

Roundtrip

found 4 hours ago

Select Spirit Airlines flight, departing Mon, Aug 11 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Thu, Aug 14, priced at $362 found 4 hours ago

Fri, Aug 8 - Tue, Aug 19

BWI

Baltimore Washington Intl. Thurgood Marshall

SJO

Juan Santamaría Intl.

$365 Roundtrip, found 4 hours ago

$365

Roundtrip

found 4 hours ago

Select Spirit Airlines flight, departing Fri, Aug 8 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Tue, Aug 19, priced at $365 found 4 hours ago

Mon, Aug 11 - Sat, Aug 16

BWI

Baltimore Washington Intl. Thurgood Marshall

SJO

Juan Santamaría Intl.

$366 Roundtrip, found 4 hours ago

$366

Roundtrip

found 4 hours ago

Select American Airlines flight, departing Mon, Aug 11 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Sat, Aug 16, priced at $366 found 4 hours ago

Mon, Aug 11 - Tue, Aug 19

DCA

Ronald Reagan Washington National

SJO

Juan Santamaría Intl.

$381 Roundtrip, found 5 days ago

$381

Roundtrip

found 5 days ago

Select American Airlines flight, departing Mon, Aug 11 from Ronald Reagan Washington National to Juan Santamaría Intl., returning Tue, Aug 19, priced at $381 found 5 days ago