$324 Cheap United flights Philadelphia (PHL) to San Francisco (SFO)

View $324 flight on Thu, Jan 1, 2026Opens in a new window

$324 Cheap United flights Philadelphia (PHL) to San Francisco (SFO)

Prices were available within the past 7 days and start at $324 for one-way flights and $360 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Jan 1 - Mon, Jan 5
PHL
Philadelphia
SFO
San Francisco
$360 Roundtrip, found 13 hours ago
$360
Roundtrip
found 13 hours ago
Select United flight, departing Thu, Jan 1 from Philadelphia to San Francisco, returning Mon, Jan 5, priced at $360 found 13 hours ago
United
Thu, Jan 1 - Mon, Jan 5
PHL
Philadelphia
SFO
San Francisco
$369 Roundtrip, found 13 hours ago
$369
Roundtrip
found 13 hours ago
Select United flight, departing Thu, Jan 1 from Philadelphia to San Francisco, returning Mon, Jan 5, priced at $369 found 13 hours ago
United
Thu, Jan 1 - Mon, Jan 5
PHL
Philadelphia
SFO
San Francisco
$388 Roundtrip, found 13 hours ago
$388
Roundtrip
found 13 hours ago
Select United flight, departing Thu, Jan 1 from Philadelphia to San Francisco, returning Mon, Jan 5, priced at $388 found 13 hours ago

Find the cheapest month to fly from Philadelphia (PHL) to San Francisco (SFO)

April is typically the cheapest month to fly

From $140 - $362 per traveler.
Flights from Philadelphia (PHL) to San Francisco (SFO)
Origin airport
Philadelphia Intl.
Destination airport
San Francisco Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United
Popular airline
Frontier Airlines
Distance
4025 km
Average flight time
3 hours 24 mins