Cheap Flights from Philadelphia to San Diego
No deal from Philadelphia to San Diego has cleared our price bar yet. What we have seen on the route is below.
Across 3 months of observations from Philadelphia to San Diego, the lowest round-trip fare we recorded was $188, in August. The typical fare was $319. August was the cheapest month we saw and October the dearest.
The most recent price we saw on this route was $390 on Frontier and United, seen Oct 17. It is an unverified observation and may have changed.
See every deal <a href="/from/philadelphia">from Philadelphia</a>, <a href="/to/san-diego">to San Diego</a>, or the return direction <a href="/from/san-diego/to/philadelphia">San Diego to Philadelphia</a>.
Latest price we saw: Philadelphia to San Diego
The most recent round-trip fare our sweep found on this route. It is not verified and may have changed since the date shown.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| Philadelphia (PHL) to San Diego (SAN) | $390 | 8.2¢ | Dec 11 – Dec 19 | Frontier and United | Oct 17 | Check price |
Price history: Philadelphia to San Diego
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $280 | $355 | 15 |
| Sep 2026 | $271 | $332 | 37 |
| Aug 2026 | $188 | $271 | 89 |
Frequently asked questions
How many flight deals from Philadelphia to San Diego are on Sparkflights right now?
There are 0 verified deals from Philadelphia to San Diego on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Philadelphia to San Diego?
The lowest fare we've recorded from Philadelphia to San Diego is $188, based on 141 price observations over 3 months.
How much does a flight from Philadelphia to San Diego cost?
The typical round-trip fare we observed from Philadelphia to San Diego is $319, against a recorded low of $188. These are observations, not quotes.
When is the cheapest month to fly Philadelphia to San Diego?
August was the cheapest month we observed from Philadelphia to San Diego and October the dearest, over 3 months of data.
What is the current price from Philadelphia to San Diego?
The most recent fare our sweep saw from Philadelphia to San Diego is $390, on Oct 17. It is an unverified observation rather than a verified deal, so check it before booking.