Cheap Flights To San Francisco 2026

San Francisco Flights as Low as $338

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.

American Airlines
Thu, Oct 29 - Mon, Nov 9
BWI
Baltimore Washington Intl. Thurgood Marshall
SJO
Juan Santamaría Intl.
$338
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Oct 29 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Mon, Nov 9, priced at $338 found 1 day ago
American Airlines
Thu, Oct 29 - Mon, Nov 9
BWI
Baltimore Washington Intl. Thurgood Marshall
SJO
Juan Santamaría Intl.
$344
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Oct 29 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Mon, Nov 9, priced at $344 found 1 day ago
American Airlines
Thu, Oct 29 - Mon, Nov 9
BWI
Baltimore Washington Intl. Thurgood Marshall
SJO
Juan Santamaría Intl.
$347
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Oct 29 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Mon, Nov 9, priced at $347 found 1 day ago
American Airlines
Thu, Oct 29 - Mon, Nov 9
BWI
Baltimore Washington Intl. Thurgood Marshall
SJO
Juan Santamaría Intl.
$358
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Oct 29 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Mon, Nov 9, priced at $358 found 1 day ago
Copa
Wed, Nov 18 - Sat, Nov 21
GUA
La Aurora Intl.
SJO
Juan Santamaría Intl.
$366
Roundtrip
found 1 day ago
Select Copa flight, departing Wed, Nov 18 from La Aurora Intl. to Juan Santamaría Intl., returning Sat, Nov 21, priced at $366 found 1 day ago
Copa
Sun, Oct 11 - Wed, Oct 21
IAD
Washington Dulles Intl.
SJO
Juan Santamaría Intl.
$367
Roundtrip
found 13 hours ago
Select Copa flight, departing Sun, Oct 11 from Washington Dulles Intl. to Juan Santamaría Intl., returning Wed, Oct 21, priced at $367 found 13 hours ago
American Airlines
Thu, Oct 29 - Mon, Nov 9
BWI
Baltimore Washington Intl. Thurgood Marshall
SJO
Juan Santamaría Intl.
$383
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Oct 29 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Mon, Nov 9, priced at $383 found 1 day ago
Southwest Airlines
Sat, Nov 7 - Tue, Nov 10
BWI
Baltimore Washington Intl. Thurgood Marshall
SJO
Juan Santamaría Intl.
$384
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Sat, Nov 7 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Tue, Nov 10, priced at $384 found 6 days ago
avianca
Delta
Wed, Oct 28 - Tue, Nov 10
BWI
Baltimore Washington Intl. Thurgood Marshall
SJO
Juan Santamaría Intl.
$428
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Oct 28 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Tue, Nov 10, priced at $428 found 1 day ago
United
Sun, Nov 8 - Thu, Nov 12
IAD
Washington Dulles Intl.
SJO
Juan Santamaría Intl.
$480
Roundtrip
found 6 days ago
Select United flight, departing Sun, Nov 8 from Washington Dulles Intl. to Juan Santamaría Intl., returning Thu, Nov 12, priced at $480 found 6 days ago
American Airlines
JetBlue Airways
Sat, Nov 7 - Mon, Nov 16
BWI
Baltimore Washington Intl. Thurgood Marshall
SJO
Juan Santamaría Intl.
$758
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Sat, Nov 7 from Baltimore Washington Intl. Thurgood Marshall to Juan Santamaría Intl., returning Mon, Nov 16, priced at $758 found 1 day ago
Air Canada
Frontier Airlines
Aeromexico
Sat, Feb 20 - Sat, Feb 27
IAD
Washington Dulles Intl.
SJO
Juan Santamaría Intl.
$1,017
Roundtrip
found 6 days ago
Select Aeromexico flight, departing Sat, Feb 20 from Washington Dulles Intl. to Juan Santamaría Intl., returning Sat, Feb 27, priced at $1,017 found 6 days ago

Cheap San Francisco Flights

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