Philadelphia to San Francisco flights
The cheapest round trip we found from Philadelphia to San Francisco is $396 (Dec 2 – 12, 1 stop), 5% below the usual $418.
PHL to SFO · Round trip · Economy · Prices per person in USD · Price found (2 days ago)
Cheapest found
Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | $382 (cheapest month) |
| December 2026 | $396 |
| January 2027 | $433 |
| February 2027 | No fares found yet |
| March 2027 | $403 |
| April 2027 | No fares found yet |
| May 2027 | No fares found yet |
| June 2027 | No fares found yet |
| July 2027 | No fares found yet |
| August 2027 | $582 |
Cheapest dates in the next 4 months
Round trip, per person-
Dec 2 – 12 10 nights · leave Wed$396 −5% vs usual$396 −5% vs usual Book
Frontier Airlines 1 stop · 8h 04m -
Jan 3 – 8, 2027 5 nights · leave Sun$433$433 Book
Frontier Airlines 3 stops · 7h 37m
-
Jan 1 – 4, 2027 3 nights · leave Fri$437 +5% vs usual$437 +5% vs usual Book
Frontier Airlines 1 stop · 7h 26m
-
Nov 20 – 30 10 nights · leave Fri$444 +6% vs usual$444 +6% vs usual Book
Frontier Airlines 1 stop · 7h 10m
-
Nov 25 – 30 5 nights · leave Wed$449 +7% vs usual$449 +7% vs usual Book
Frontier Airlines 1 stop · 7h 14m
-
Dec 1 – 4 3 nights · leave Tue$466 +11% vs usual$466 +11% vs usual Book
Frontier Airlines 1 stop · 8h 04m
Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert
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Go City prices checked Oct 23, 2026; the final price is on Go City. Partner links: we may earn a commission if you book, at no extra cost to you.
Plan the rest of your trip
San Francisco · Dec 2 – 12Partner links: we may earn a commission if you book, at no extra cost to you.
Good to know
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Flights to San Francisco from other cities
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- Ontario $45 −67%
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Philadelphia to San Francisco: questions
How much does a flight from Philadelphia to San Francisco cost?
The cheapest round trip we have found right now is $396, leaving December 2 and returning December 12. The usual price on this route is about $418, so this fare is 5% less. Prices are per person, economy, in USD.
What is the cheapest month to fly from Philadelphia to San Francisco?
November 2026, with round trips from $382. The most expensive month in our data is August (from $582). Based on the 5 months ahead we have prices for.
Which airports do Philadelphia to San Francisco flights use?
Philadelphia airports include Philadelphia International (PHL) and Trenton-Mercer (TTN). San Francisco airports include San Francisco International (SFO). The prices on this page cover every airport in both cities (PHL and SFO are the city codes).
About this route
We track round-trip economy fares from Philadelphia (United States) to San Francisco (United States) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $396, departing December 2 and returning December 12, about 5% below the usual $418. Right now we're following 6 upcoming date combinations on this route. The cheapest month to fly in our data is November, from $382. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.