Cheap Flights from Philadelphia to San Diego
Browse current best options from Philadelphia. Become a member to unlock all deals and get alerts when new deals appear.
Deals from
Philadelphia
RatePunk searches hundreds of travel sites at once for deals on flights to San Diego
Prices updated 24 days ago
486,190 searches this week
171 airlines compared
80%+ AI score for best value
Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)
Today’s best flight deals from Philadelphia to San Diego
Explore current cheapest deals departing from Philadelphia to San Diego
Round trip
Sort by: Cheapest
October 20 - October 24
PHL - San Diego
$416
$227
Round trip
September 10 - September 17
PHL - San Diego
$287
$229
Round trip
September 15 - September 21
PHL - San Diego
$290
$229
Round trip
September 15 - September 22
PHL - San Diego
$291
$229
Round trip
September 10 - September 21
PHL - San Diego
$265
$229
Round trip
September 10 - September 22
PHL - San Diego
$263
$229
Round trip
October 24 - October 31
PHL - San Diego
$404
$229
Round trip
December 5 - December 12
PHL - San Diego
$418
$229
Round trip
August 13 - August 20
PHL - San Diego
$310
$233
Round trip
August 18 - August 24
PHL - San Diego
$311
$233
Round trip
Unlock all 500+ flight deals to San Diego and get alerts when great deals appear
Route Intelligence — 486,190 Searches this Week
Insights for flights from Philadelphia to San Diego
How much is a round trip from Philadelphia to San Diego
Regular price: $327 - $507
Prices for flights from Philadelphia to San Diego are currently below the regular range.
The regular price range for flights from Philadelphia to San Diego is between $327 and $507. The current lowest deal is $227 with Frontier Airlines, for travel from Oct 20-Oct 24.
now $227
Low $327
High $507
The cheapest time to fly from Philadelphia to San Diego
The cheapest month to fly from Philadelphia to San Diego is August, with a median price of $408. The most expensive month is March, with a median price of $484. Prices are generally lower from April to November.
August
Flights from $408
March
Flights from $484
Direct flights from Philadelphia to San Diego
American Airlines
Last-minute flights going from Philadelphia to San Diego
Wed, Jun 17
PHL - San Diego
Philadelphia (PHL) - San Diego (SAN)
Frontier Airlines
$592
$338
One-way
Wed, Jun 17
PHL - San Diego
Philadelphia (PHL) - San Diego (SAN)
Frontier Airlines
$588
$350
One-way
Thu, Jun 18
PHL - San Diego
Philadelphia (PHL) - San Diego (SAN)
Frontier Airlines
$507
$350
One-way
Thu, Jun 18
PHL - San Diego
Philadelphia (PHL) - San Diego (SAN)
Frontier Airlines
$533
$352
One-way
Thu, Jun 18
PHL - San Diego
Philadelphia (PHL) - San Diego (SAN)
Frontier Airlines
$598
$352
One-way
Thu, Jun 18
PHL - San Diego
Philadelphia (PHL) - San Diego (SAN)
Frontier Airlines
$592
$362
One-way
Biggest price drops on these dates for flights from Philadelphia to San Diego
Jun 17 - Jun 20
$592 → $338
43%
Jun 18 - Jun 20
$598 → $352
41%
Jun 17 - Jun 21
$588 → $350
41%
Jun 21 - Jun 24
$587 → $355
40%
Popular Airports to fly from Philadelphia to San Diego
Philadelphia - San Diego route insights
💸 Price insights
Recent fares are above the typical level
Recent fares from Philadelphia to San Diego are above the typical level, with a median price of $411.
📅 Best time to fly
August is historically the cheapest month to fly
Historically, August is the cheapest month to fly from Philadelphia to San Diego, with a median price of $408.
⏱️ Flight duration
Flights are typically 19h 43m
Flights from Philadelphia to San Diego typically take 19h 43m, covering a distance of 3806 km.
✈️ Airlines & availability
Connecting flights are dominant on this route
Connecting flights are dominant, making up 80% of deals, with a median of 2 stopovers.
🏆 Airline highlight
American Airlines offers direct flights
American Airlines is one of the carriers offering direct flights from Philadelphia to San Diego.
🎯 Booking tip
Deals are frequent, appearing daily
Deals for flights from Philadelphia to San Diego are frequent, with over 1 deal per day.
Philadelphia main airports to depart from
Philadelphia International (PHL)
Philadelphia International Airport is a convenient choice for flights from Philadelphia to San Diego.
📍 ~10 km from city center (reachable by car or train)
💸 Flights from ~$227
San Diego main airports to arrive at
San Diego International (SAN)
San Diego International Airport is a convenient arrival point for flights from Philadelphia to San Diego.
📍 ~5 km from city center (reachable by car)
💸 Flights from ~$227
McClellan–Palomar (CLD)
McClellan–Palomar Airport offers an alternative arrival option for travelers heading to the San Diego area.
📍 ~40 km from city center (reachable by car)
💸 Flights from ~$364
Airports nearby San Diego used as alternative
Tijuana International (TIJ)
Tijuana International (TIJ) is a useful alternative for flights to Mexico, with direct access via the Cross Border Xpress (CBX) terminal.
📍 ~25 km from San Diego (requires international border crossing)
💸 Flights from ~$450
John Wayne (SNA)
John Wayne (SNA) is the closest major US domestic alternative, offering a strong domestic network.
📍 ~135 km from San Diego (reachable by car)
💸 Flights from ~$215
Los Angeles International (LAX)
Los Angeles International (LAX) is a primary global hub with extensive international and domestic route options.
📍 ~180 km from San Diego (reachable by car)
💸 Flights from ~$188
Ontario International (ONT)
Ontario International (ONT) is a reliable domestic alternative with growing service, often less congested than LAX or SNA.
📍 ~175 km from San Diego (reachable by car)
💸 Flights from ~$236
Long Beach (LGB)
Long Beach (LGB) is easy to navigate with fast security, and a good alternative for specific West Coast routes.
📍 ~155 km from San Diego (reachable by car)
💸 Flights from ~$297
Business & First Class Flight Deals to San Diego
Discover luxury on the budget with premium cabin class on flights from Philadelphia to San Diego.
Elite
Best Elite deals to San Diego
Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.
From PHL
Elite
Dec 05
San Diego, United States
91% AI deal score
$1,738
$1,017
Save $721
From PHL
Elite
Aug 26
San Diego, United States
91% AI deal score
$1,873
$1,079
Save $794
From PHL
Elite
Aug 15
San Diego, United States
91% AI deal score
$1,861
$1,079
Save $782
From PHL
Elite
Sep 23
San Diego, United States
90% AI deal score
$1,675
$1,017
Save $658
From PHL
Elite
Dec 05
San Diego, United States
90% AI deal score
$1,700
$1,017
Save $683
From PHL
Elite
Dec 05
San Diego, United States
90% AI deal score
$1,700
$1,017
Save $683
From PHL
Elite
Nov 19
San Diego, United States
90% AI deal score
$1,642
$1,017
Save $625
From PHL
Elite
Oct 17
San Diego, United States
90% AI deal score
$1,739
$1,017
Save $722
From PHL
Elite
Oct 10
San Diego, United States
90% AI deal score
$1,733
$1,017
Save $716
From PHL
Elite
Oct 02
San Diego, United States
90% AI deal score
$1,746
$1,017
Save $729
From PHL
Elite
Sep 09
San Diego, United States
90% AI deal score
$1,770
$1,074
Save $696
From PHL
Elite
Sep 23
San Diego, United States
90% AI deal score
$1,792
$1,074
Save $718
From PHL
Elite
Oct 17
San Diego, United States
90% AI deal score
$2,243
$1,074
Save $1,169
From PHL
Elite
Jul 21
San Diego, United States
90% AI deal score
$1,759
$1,074
Save $685
From PHL
Elite
Aug 05
San Diego, United States
90% AI deal score
$1,845
$1,079
Save $766
From PHL
Elite
Dec 05
San Diego, United States
90% AI deal score
$1,792
$1,131
Save $661
From PHL
Elite
Aug 15
San Diego, United States
90% AI deal score
$1,846
$1,131
Save $715
From PHL
Elite
Aug 14
San Diego, United States
90% AI deal score
$1,851
$1,131
Save $720
From PHL
Elite
Nov 06
San Diego, United States
89% AI deal score
$1,622
$1,017
Save $605
From PHL
Elite
Aug 14
San Diego, United States
89% AI deal score
$1,620
$1,017
Save $603
From PHL
Elite
Aug 13
San Diego, United States
89% AI deal score
$1,632
$1,017
Save $615
From PHL
Elite
Aug 30
San Diego, United States
89% AI deal score
$1,651
$1,017
Save $634
From PHL
Elite
Jul 04
San Diego, United States
89% AI deal score
$1,629
$1,042
Save $587
From PHL
Elite
Jul 03
San Diego, United States
89% AI deal score
$1,649
$1,057
Save $592
From PHL
Elite
Dec 06
San Diego, United States
89% AI deal score
$1,704
$1,082
Save $622
From PHL
Elite
Dec 04
San Diego, United States
89% AI deal score
$1,691
$1,082
Save $609
From PHL
Elite
Dec 04
San Diego, United States
89% AI deal score
$1,721
$1,082
Save $639
From PHL
Elite
Dec 06
San Diego, United States
89% AI deal score
$1,735
$1,082
Save $653
From PHL
Elite
Sep 03
San Diego, United States
89% AI deal score
$1,764
$1,131
Save $633
From PHL
Elite
Nov 04
San Diego, United States
88% AI deal score
$1,623
$1,082
Save $541
From PHL
Elite
Nov 12
San Diego, United States
88% AI deal score
$1,610
$1,082
Save $528
From PHL
Elite
Nov 05
San Diego, United States
88% AI deal score
$1,645
$1,082
Save $563
From PHL
Elite
Jul 10
San Diego, United States
88% AI deal score
$1,762
$1,201
Save $561
From PHL
Elite
Aug 15
San Diego, United States
87% AI deal score
$1,860
$1,241
Save $619
From PHL
Elite
Nov 25
San Diego, United States
86% AI deal score
$1,600
$1,236
Save $364
From PHL
Elite
Nov 03
San Diego, United States
86% AI deal score
$1,612
$1,241
Save $371
From PHL
Elite
Oct 03
San Diego, United States
85% AI deal score
$1,535
$1,236
Save $299
From PHL
Elite
Dec 05
San Diego, United States
85% AI deal score
$1,578
$1,241
Save $337
From PHL
Elite
Oct 06
San Diego, United States
85% AI deal score
$1,529
$1,241
Save $288
From PHL
Elite
Dec 08
San Diego, United States
85% AI deal score
$1,578
$1,241
Save $337
From PHL
Elite
Dec 02
San Diego, United States
80% AI deal score
$2,141
$1,611
Save $530
From PHL
Elite
Dec 05
San Diego, United States
80% AI deal score
$2,153
$1,611
Save $542
From PHL
Elite
Dec 08
San Diego, United States
80% AI deal score
$2,170
$1,611
Save $559
From PHL
Elite
Dec 02
San Diego, United States
80% AI deal score
$2,136
$1,611
Save $525
From PHL
Elite
Dec 09
San Diego, United States
80% AI deal score
$2,192
$1,628
Save $564
From PHL
Elite
Sep 22
San Diego, United States
80% AI deal score
$1,465
$1,236
Save $229
From PHL
Elite
Sep 29
San Diego, United States
80% AI deal score
$1,483
$1,241
Save $242
From PHL
Elite
Sep 12
San Diego, United States
80% AI deal score
$1,466
$1,241
Save $225
From PHL
Elite
Nov 10
San Diego, United States
79% AI deal score
$2,004
$1,611
Save $393
From PHL
Elite
Nov 11
San Diego, United States
79% AI deal score
$2,074
$1,611
Save $463
From PHL
Elite
Dec 06
San Diego, United States
79% AI deal score
$2,166
$1,663
Save $503
From PHL
Elite
Sep 29
San Diego, United States
79% AI deal score
$2,350
$1,737
Save $613
From PHL
Elite
Aug 04
San Diego, United States
79% AI deal score
$1,507
$1,241
Save $266
From PHL
Elite
Aug 11
San Diego, United States
79% AI deal score
$1,466
$1,241
Save $225
From PHL
Elite
Aug 15
San Diego, United States
79% AI deal score
$1,455
$1,241
Save $214
From PHL
Elite
Sep 01
San Diego, United States
79% AI deal score
$1,471
$1,241
Save $230
From PHL
Elite
Aug 08
San Diego, United States
79% AI deal score
$1,479
$1,241
Save $238
From PHL
Elite
Sep 15
San Diego, United States
79% AI deal score
$1,461
$1,241
Save $220
From PHL
Elite
Nov 17
San Diego, United States
78% AI deal score
$1,913
$1,611
Save $302
From PHL
Elite
Nov 10
San Diego, United States
78% AI deal score
$1,923
$1,632
Save $291
From PHL
Elite
Nov 17
San Diego, United States
78% AI deal score
$1,945
$1,632
Save $313
From PHL
Elite
Nov 11
San Diego, United States
78% AI deal score
$1,923
$1,632
Save $291
From PHL
Elite
Dec 01
San Diego, United States
78% AI deal score
$2,144
$1,718
Save $426
From PHL
Elite
Dec 01
San Diego, United States
78% AI deal score
$2,146
$1,718
Save $428
From PHL
Elite
Oct 06
San Diego, United States
78% AI deal score
$2,067
$1,737
Save $330
From PHL
Elite
Jun 30
San Diego, United States
78% AI deal score
$2,226
$1,785
Save $441
From PHL
Elite
Aug 25
San Diego, United States
78% AI deal score
$1,428
$1,241
Save $187
From PHL
Elite
Aug 22
San Diego, United States
78% AI deal score
$1,428
$1,241
Save $187
From PHL
Elite
Jul 28
San Diego, United States
78% AI deal score
$1,387
$1,241
Save $146
From PHL
Elite
Jul 25
San Diego, United States
78% AI deal score
$1,389
$1,241
Save $148
From PHL
Elite
Nov 25
San Diego, United States
77% AI deal score
$1,944
$1,663
Save $281
From PHL
Elite
Nov 20
San Diego, United States
77% AI deal score
$1,910
$1,663
Save $247
From PHL
Elite
Nov 15
San Diego, United States
77% AI deal score
$1,913
$1,663
Save $250
From PHL
Elite
Aug 01
San Diego, United States
77% AI deal score
$1,983
$1,698
Save $285
From PHL
Elite
Oct 24
San Diego, United States
77% AI deal score
$2,011
$1,713
Save $298
From PHL
Elite
Nov 20
San Diego, United States
77% AI deal score
$1,968
$1,715
Save $253
From PHL
Elite
Nov 15
San Diego, United States
77% AI deal score
$1,948
$1,715
Save $233
From PHL
Elite
Nov 18
San Diego, United States
77% AI deal score
$1,973
$1,718
Save $255
From PHL
Elite
Oct 22
San Diego, United States
66% AI deal score
$2,700
From PHL
Elite
Oct 19
San Diego, United States
66% AI deal score
$2,700
From PHL
Elite
Sep 29
San Diego, United States
65% AI deal score
$3,086
From PHL
Elite
Oct 21
San Diego, United States
48% AI deal score
$3,404
From PHL
Elite
Oct 10
San Diego, United States
48% AI deal score
$3,971