Frontier AirlinesDepart08:57
Tue, Dec 15SAN → PHL
7h 57m · 2 stops
$139one way, per person
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- Cheapest fare
- $139
- Cheapest month
- December
- Direct flights
- Not recently
- Quickest trip
- 7h 57m
Frontier Airlines · Tue, Dec 15
from $139
Usually 1+ stop
3,810 km
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Cheapest month to fly from San Diego to Philadelphia
Lowest one-way fare per person in each month. Choose a month to see every date.
Cheapest dates in December 2026
The lowest fares we've seen for each day, cheapest first.
Frontier Airlines
Breeze AirwaysDepart12:37
Sun, Dec 13SAN → PHL
9h 05m · 2 stops
$200one way, per person
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About flights from San Diego to Philadelphia
San Diego (SAN) and Philadelphia (PHL) are about 3,810 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 7h 57m. Over the next few months, one-way fares start from $139, and December 2026 is currently the cheapest month to fly.
These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.
Frequently asked questions
How much is a flight from San Diego to Philadelphia?
The cheapest one-way fare we've seen recently is $139 with Frontier Airlines, departing Tuesday, December 15, 2026. Over the coming months, the lowest fare in each month ranges from $139 to $290.
What is the cheapest month to fly from San Diego to Philadelphia?
December 2026 currently has the lowest fares, from $139 one way.
Are there direct flights from San Diego to Philadelphia?
We haven't seen direct fares recently, so most journeys include at least one stop.
How long is the flight from San Diego to Philadelphia?
The quickest journey we've seen takes about 7h 57m. San Diego and Philadelphia are around 3,810 km apart.
Which airlines fly from San Diego to Philadelphia?
Recent fares on this route were with Alaska Airlines, Frontier Airlines and Breeze Airways.
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