Cheap flights from Philadelphia to San Francisco from $289 PHL, TTN → SFO
Philadelphia International Airport (PHL), Trenton-Mercer Airport (TTN) → San Francisco International Airport (SFO)
The cheapest return found recently is $289 with Frontier Airlines, 20 Nov – 30 Nov, found yesterday.
- Cheapest return found recently
- $289, 20 Nov to 30 Nov
- Usual return price
- $324 to $378
- Cheapest month to fly
- November 2026, return fares from $289 found in the last 7 days
- Airlines with nonstop flights
- American Airlines, United Airlines
Return
The cheapest return fare on each of 4 departure dates is usually $324 to $378.
Cheapest return found recently
$289
20 Nov – 30 Nov · Frontier Airlines
Philadelphia International Airport (PHL) → San Francisco International Airport (SFO)
Leaves 9:55 p.m. · Return leaves 11:26 p.m. · 25 h 44 min of travel, both ways together
out 1 stop, back 1 stop
found yesterday
Cheapest nonstop return
$466
20 Nov – 30 Nov · United Airlines
Philadelphia International Airport (PHL) → San Francisco International Airport (SFO)
Leaves 6:00 a.m. · Return leaves 7:49 p.m. · 11 h 41 min of travel, both ways together
out nonstop, back nonstop
found 3 days ago
Found recently, and the cheapest we hold
$289 20 Nov – 30 Novfound yesterdaySee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 48 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $282 to $521.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 4 departure dates from 20 Nov to 10 Mar 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 10-night return fares leaving within 3 days of 20 Nov to compare.
Every date we hold
83 fares on 4 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 20 Nov – 30 Nov | $289 | Frontier Airlines | Philadelphia International Airport (PHL) → San Francisco International Airport (SFO) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 11 Dec – 17 Jan 2027 | $352 | Frontier Airlines | Philadelphia International Airport (PHL) → San Francisco International Airport (SFO) | out 2 stops, back 2 stops | found 5 days ago | See prices for these dates |
| 1 Jan 2027 – 4 Jan 2027 | $336 | Frontier Airlines | Philadelphia International Airport (PHL) → San Francisco International Airport (SFO) | out 1 stop, back 1 stop | found 8 days ago | See prices for these dates |
| 10 Mar 2027 – 17 Mar 2027 | $457 | American Airlines | Philadelphia International Airport (PHL) → San Francisco International Airport (SFO) | out nonstop, back nonstop | found 5 days ago | See prices for these dates |
Which month looks cheapest?
November 2026 is the cheapest month — from $289.
Airlines on the cheapest dates: Frontier Airlines, American Airlines.
Premium cabin fares from Philadelphia to San Francisco
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 20 Nov – 30 Nov in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Philadelphia to San Francisco?
Return
Fares 14 to 29 days before departure were typically 29% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (48 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $420 | $401 | +41% | 9 |
| 7–13 days | $380 | $289 | +27% | 10 |
| 14–29 days | $299 | $282 | Cheapest seen | 19 |
| 30–59 days | $336 | $299 | +12% | 29 |
| 60–89 days | $403 | $372 | +35% | 19 |
| 90–179 days | $337 | $337 | +13% | 12 |
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
New York → San Francisco
130 km from Philadelphia
$255
$34 less than flying from Philadelphia
3 Dec – 8 Dec · JFK → SFO · out nonstop, back nonstop
found 2 days ago
Baltimore → San Francisco
145 km from Philadelphia
$410
$121 more than flying from Philadelphia
17 Nov – 25 Nov · BWI → SFO · out 1 stop, back 1 stop
found 4 days ago
Philadelphia → Oakland
13 km from San Francisco
$433
$144 more than flying to San Francisco
1 Dec – 4 Dec · PHL → OAK · out 3 stops, back 1 stop
found 7 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
New York → San Francisco
130 km from Philadelphia
$192
6 Aug 2027 · JFK → SFO · nonstop
found 2 days ago
Philadelphia → Oakland
13 km from San Francisco
$258
1 Jan 2027 · PHL → OAK · 1 stop
found 3 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 20 Nov – 30 Nov. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Philadelphia to San Francisco?
The cheapest return found recently is $289 with Frontier Airlines, 20 Nov to 30 Nov, found yesterday. The cheapest return fare on each of 4 departure dates is usually $324 to $378.
What is the cheapest month to fly from Philadelphia to San Francisco?
November 2026 is the cheapest month for a return, from $289, 20 Nov to 30 Nov, found yesterday.
How far ahead should I book a flight from Philadelphia to San Francisco?
In 48 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 29% lower than 0 to 6 days before departure.
Is there a direct flight from Philadelphia to San Francisco?
Yes, the cheapest nonstop return found recently is $466 with United Airlines, 20 Nov to 30 Nov, found 3 days ago.
Which airlines have the cheapest flights from Philadelphia to San Francisco?
Between 20 Nov and 10 Mar 2027, Frontier Airlines has the cheapest return on 3 of the 4 departure dates we hold, and American Airlines on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work