Philadelphia to San Diego PHL → SAN
Philadelphia International Airport (PHL) → San Diego International Airport (SAN)
The cheapest return found recently is $436 with Alaska Airlines, 26 Oct – 28 Oct, found yesterday.
Return
The cheapest return fare on each of 3 departure dates is usually $400 to $436.
Cheapest return found recently
$436
26 Oct – 28 Oct · Alaska Airlines
Philadelphia International Airport (PHL) → San Diego International Airport (SAN)
Leaves 4:17 p.m. · Return leaves 5:20 p.m. · 30 h of travel, both ways together
out 1 stop, back 1 stop
found yesterday
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$436 26 Oct – 28 Octfound yesterdaySee prices for these dates
$363 18 Dec – 29 Decfound 6 days agoSee prices for these dates
What have prices looked like?
Over 20 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $293 to $503.
20 days is a short history, so treat this range as an early guide.
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 3 departure dates from 26 Oct to 18 Dec, 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?
No. We hold 2-night return fares on 1 other departure date within 3 days of 26 Oct, and it is not cheaper.
Every date we hold
4 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 26 Oct – 28 Oct | $436 | Alaska Airlines | Philadelphia International Airport (PHL) → San Diego International Airport (SAN) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
| 27 Oct – 29 Oct | $436 | Alaska Airlines | Philadelphia International Airport (PHL) → San Diego International Airport (SAN) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 18 Dec – 29 Dec | $363 | Frontier Airlines | Philadelphia International Airport (PHL) → San Diego International Airport (SAN) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
Which month looks cheapest?
December 2026 is the cheapest month — from $363.
Airlines on the cheapest dates: Alaska Airlines, Frontier Airlines.
Premium cabin fares from Philadelphia to San Diego
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 26 Oct – 28 Oct in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Philadelphia to San Diego?
Return
Not enough history yet: in 20 days of return prices, 24 Sept to 18 Oct, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
New York → San Diego
130 km from Philadelphia
$386
$50 less than flying from Philadelphia
26 Jan 2027 – 31 Jan 2027 · EWR → SAN · out nonstop, back nonstop
found yesterday
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 26 Oct – 28 Oct. A live search on this page shows what those dates cost now, for one adult in economy.
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