Cheap flights from Philadelphia to San Diego from $107
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to San Diego departing on 1/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Wed 12/2
6:20 pm-11:25 pm
1 stop8h 05m
San Diego
Fri 12/4
12:35 pm-11:25 pm
1 stop7h 50m
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Tue 11/17
6:00 am-1:00 pm
2 stops10h 00m
San Diego
Wed 11/18
12:35 pm-11:30 pm
1 stop7h 55m
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Fri 11/6
4:47 pm-3:58 pm
2 stops26h 11m
San Diego
Sat 11/14
6:25 am-4:43 pm
2 stops31h 18m
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Fri 12/11
6:40 pm-10:19 am
2 stops18h 39m
San Diego
Thu 12/17
6:22 pm-5:03 am
1 stop7h 41m
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Mon 10/26
7:20 pm-12:37 pm
1 stop20h 17m
San Diego
Thu 10/29
12:37 pm-4:24 pm
1 stop24h 47m
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Thu 11/5
7:00 am-12:56 pm
1 stop8h 56m
San Diego
Fri 11/20
8:55 pm-8:20 am
1 stop8h 25m
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Sat 10/31
4:17 pm-1:35 pm
2 stops24h 18m
San Diego
Sat 11/7
1:10 pm-5:32 am
2 stops13h 22m
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Sat 12/5
10:30 am-7:18 pm
1 stop11h 48m
San Diego
Sat 12/12
6:20 am-2:37 pm
Nonstop5h 17m
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Sat 11/7
6:43 pm-9:40 pm
Nonstop5h 57m
San Diego
Sat 11/14
9:18 am-5:35 pm
Nonstop5h 17m
PhiladelphiaSan Diego
PHL Philadelphia - SAN San Diego
PHLSAN
Philadelphia
Wed 11/4
10:27 am-7:14 pm
1 stop11h 47m
San Diego
Wed 11/18
8:50 pm-11:53 am
1 stop12h 03m
See travel insights to San Diego from
How to get the cheapest flight ticket from Philadelphia to San Diego
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Philadelphia and San Diego?
Prices are currently low for flights on this route.
Typical prices usually range from $428 to $634.The lowest price recently found on this route was $353.
What is the cheapest month to fly to San Diego?
If you are unable to visit San Diego during the month of February, then departing from Philadelphia during the month January is also very affordable. Most momondo users find prices during this month for around $430.
What is the cheapest day to depart on your flight to San Diego?
The cheapest day to depart from Philadelphia to San Diego is on a Tuesday. Travelers who choose to depart for San Diego on a Tuesday will often find tickets for as low as $466. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $618. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.
What is the cheapest time of day to depart on your flight to San Diego?
The cheapest time of day to fly to San Diego is in the evening when flights can be purchased for as low as $433. Flights in the morning are often more expensive with an average ticket price of $517.
What is the cheapest Philadelphia to San Diego flight route?
Fly from Philadelphia to San Diego for the best Philadelphia - San Diego flight prices
How far in advance should I book a flight from Philadelphia to San Diego?
You are more likely to see cheaper flights to San Diego from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $498 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Philadelphia for as low as $448 on momondo.
What cabin class options are available on Philadelphia to San Diego flights?
There are 3 cabin classes available to choose from on Philadelphia to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Philadelphia to San Diego?
Southwest is the most popular carrier operating from Philadelphia to San Diego
What airlines fly to San Diego?
United Airlines, American Airlines and Delta are the top three most popular airlines that fly to San Diego from Philadelphia according to our data. United Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 7 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between Philadelphia and San Diego?
Denver (DEN) was the most common stop: 57% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from Philadelphia to San Diego?
Flights via Boston (BOS) offer the lowest average round-trip price of $265.
Which layover airport has the shortest travel time from Philadelphia to San Diego?
Flights connecting via Chicago (MDW) have the shortest average one-way travel time: 10h 05m.
Which layover airport has the shortest connection time from Philadelphia to San Diego?
Boston (BOS) has the shortest average layover time for this route: 2h 01m.
How many flights depart from Philadelphia to San Diego on average per day?
As of October 2026, 6 flights take off from Philadelphia and land in San Diego each day. The most common flight departure time for this route is 4:00PM, with 43% of daily flights taking off in the afternoon.
How many flights depart from Philadelphia to San Diego on average per week?
The number of flights available between Philadelphia and San Diego is 48 per week as of October 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.
When to book flights from Philadelphia to San Diego
Cheap Philadelphia to San Diego (PHL to SAN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Philadelphia to San Diego
Frequently asked questions about flying from Philadelphia to San Diego
How far is Philadelphia to San Diego by plane?
The distance between Philadelphia and San Diego is about 2366.5 mi. Typically, this will take 5h 57m by plane in normal conditions.
When did momondo last update prices for flights from Philadelphia Airport to San Diego Airport?
Prices for flights from Philadelphia Airport to San Diego Airport refresh daily.
How many operators does momondo search for flights from Philadelphia Airport to San Diego Airport?
As of October 2026, there are 6 operators available to choose from for flights from Philadelphia Airport to San Diego Airport.
How old do you have to be to fly from Philadelphia Airport to San Diego Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The travel and health documents required for your trip to San Diego Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Diego Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Philadelphia to San Diego?
momondo data reveals that the most frequently booked plane model on the route from Philadelphia to San Diego is Airbus A321-100/200, representing 52.52% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 10.79%, Airbus A321neo at 10.79%, and Boeing 737 MAX 9 at 7.19%.
What is the most popular airline from Philadelphia to San Diego?
momondo data reveals that the most frequently booked airline on the route from Philadelphia to San Diego is American Airlines, representing 80% of all bookings. The subsequent popular airlines are Southwest at 9%, Frontier at 4%, and United Airlines at 3%.
Best airlines flying from Philadelphia to San Diego
Compare and see reviews for airlines that fly from Philadelphia to San Diego with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $185 | Free Cancellation | Rating 5.5 2,542 reviews | |||
| PriceFrom $265 | Free Cancellation | Rating 7.1 3,045 reviews | |||
| PriceFrom $266 | Free Cancellation | Rating 7.8 8,653 reviews | |||
| PriceFrom $312 | Free Cancellation | Rating 7.4 10,350 reviews | |||
| PriceFrom $343 | Free Cancellation | Rating 7.9 4,220 reviews | |||
| PriceFrom $359 | Free Cancellation | Rating 7.0 12,152 reviews |
United Airlines Flights From Philadelphia to San Diego
United Airlines is one of the most popular airlines flying from Philadelphia to San Diego, operating 6 flights/week on average for this route. A good United Airlines flight deal for Philadelphia to San Diego starts from $312 round-trip, up to an average price of $388. Our users have rated United Airlines at 7.4/10.
American Airlines Flights From Philadelphia to San Diego
The best American Airlines deal for Philadelphia to San Diego flight tickets found on momondo in the last 72 hours was $359, round-trip. It should be noted that an average American Airlines flight deal for this route in this time was higher, at $515 round-trip. American Airlines operates 21 flights out of Philadelphia into San Diego in an average week, so prices vary by time and availability. 12,149 American Airlines reviews by users on momondo have scored the airline at 7.0/10.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Philadelphia to San Diego?
It is quick and easy to find Philadelphia to San Diego flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Diego that suits you.
Can I find flights from Philadelphia to San Diego with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Philadelphia to San Diego flights to just show those with flexible booking policies.
How can momondo help me find flights from Philadelphia to San Diego?
momondo provides multiple filters to help you find the best flight to San Diego from Philadelphia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Philadelphia to San Diego right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Philadelphia to San Diego now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Diego and let you know when they change.