$154 Cheap Alaska Airlines flights San Francisco (SFO) to Philadelphia (PHL)

Prices were available within the past 7 days and start at $154 for one-way flights and $225 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Fri, Dec 5 - Mon, Dec 15
SFO
San Francisco
PHL
Philadelphia
$225 Roundtrip, just found
$225
Roundtrip
just found
Select Alaska Airlines flight, departing Fri, Dec 5 from San Francisco to Philadelphia, returning Mon, Dec 15, priced at $225 just found
Alaska Airlines
Wed, Dec 10 - Thu, Dec 11
SFO
San Francisco
PHL
Philadelphia
$303 Roundtrip, found 2 hours ago
$303
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Wed, Dec 10 from San Francisco to Philadelphia, returning Thu, Dec 11, priced at $303 found 2 hours ago

Frequently asked questions

How much is an Alaska Airlines flight from San Francisco Intl. Airport (SFO) to Philadelphia Intl. Airport (PHL)?
You can find cheap return Alaska Airlines flights from $225 from SFO to PHL by filtering your results from "Price (lowest to highest)" on Expedia. Or search for options from $154 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SFO to PHL with Alaska Airlines?
Alaska Airlines flights to Philadelphia tend to be more affordable in the quieter months of January and February. Whether you're searching for a one-way or a return ticket, you could land a better deal then.
What is the cheapest time to book flights from San Francisco Intl. Airport (SFO) to Philadelphia Intl. Airport (PHL) with Alaska Airlines?
Search for affordable Alaska Airlines flights from San Francisco Intl. Airport (SFO) to Philadelphia Intl. Airport (PHL) one to three months before your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and itinerary, the best day of the week to book a domestic flight is generally Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Alaska Airlines fly nonstop from San Francisco Intl. Airport (SFO) to Philadelphia Intl. Airport (PHL)?
Use the "Nonstop" filter when looking for direct Alaska Airlines flights from SFO to PHL. It's also an easy way to compare other airlines offering the same nonstop journey.
What is the earliest Alaska Airlines flight from SFO to PHL?
Find Alaska Airlines's earliest flights from SFO to PHL by checking our "Early Morning" and "Morning" filters. Not only will you arrive sooner, early departures also experience 20% fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Alaska Airlines fly into in Philadelphia?
Alaska Airlines flights from San Francisco Intl. Airport (SFO) to Philadelphia come in to land at Philadelphia Intl. Airport (PHL). This is the main gateway to this destination.
Why fly with Alaska Airlines from SFO to PHL?
Heading from SFO to PHL with Alaska Airlines means enjoying a range of perks, including an excellent in-flight experience and a rewarding loyalty program. Plus, when you book through Expedia, One Key™ members can collect OneKeyCash™* to use on select future travel purchases. That's in addition to the Mileage Plan points you can earn with Alaska Airlines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Alaska Airlines flight from San Francisco Intl. Airport (SFO) to Philadelphia Intl. Airport (PHL)?
You can usually cancel or modify your flight, although additional charges may apply if you booked more than 24 hours ago. Need to keep your options open? Use our "No cancel fee" and "Changes included" filters to find flights that won't charge extra if you have to adjust your plans. To make modifications, go to "Trips," select your flight and click on "Manage Booking" for more information.

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*Available to One Key members.