Flights from Allentown to San Diego

Cheapest flights from Allentown

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Sep 4 - Mon, Sep 8

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$227 Roundtrip, found 1 day ago

$227

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Thu, Sep 4 from Philadelphia Intl. to San Diego Intl., returning Mon, Sep 8, priced at $227 found 1 day ago

Mon, Sep 8 - Mon, Sep 8

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$234 Roundtrip, found 1 day ago

$234

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Mon, Sep 8 from Philadelphia Intl. to San Diego Intl., returning Mon, Sep 8, priced at $234 found 1 day ago

Thu, Sep 4 - Thu, Sep 11

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$246 Roundtrip, found 1 day ago

$246

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Thu, Sep 4 from Philadelphia Intl. to San Diego Intl., returning Thu, Sep 11, priced at $246 found 1 day ago

Thu, Sep 4 - Sun, Sep 7

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$247 Roundtrip, found 1 day ago

$247

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Thu, Sep 4 from Philadelphia Intl. to San Diego Intl., returning Sun, Sep 7, priced at $247 found 1 day ago

Sun, Sep 7 - Mon, Sep 8

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$254 Roundtrip, found 1 day ago

$254

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Sun, Sep 7 from Philadelphia Intl. to San Diego Intl., returning Mon, Sep 8, priced at $254 found 1 day ago

Fri, Sep 5 - Fri, Sep 12

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$262 Roundtrip, found 1 day ago

$262

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Fri, Sep 5 from Philadelphia Intl. to San Diego Intl., returning Fri, Sep 12, priced at $262 found 1 day ago

Fri, Sep 5 - Thu, Sep 11

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$266 Roundtrip, found 1 day ago

$266

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Fri, Sep 5 from Philadelphia Intl. to San Diego Intl., returning Thu, Sep 11, priced at $266 found 1 day ago

Fri, Sep 5 - Sun, Sep 7

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$267 Roundtrip, found 1 day ago

$267

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Fri, Sep 5 from Philadelphia Intl. to San Diego Intl., returning Sun, Sep 7, priced at $267 found 1 day ago

Sat, Jun 21 - Fri, Jun 27

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$269 Roundtrip, found 3 days ago

$269

Roundtrip

found 3 days ago

Select Spirit Airlines flight, departing Sat, Jun 21 from Philadelphia Intl. to San Diego Intl., returning Fri, Jun 27, priced at $269 found 3 days ago

Fri, Sep 5 - Fri, Sep 12

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$269 Roundtrip, found 1 day ago

$269

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Fri, Sep 5 from Philadelphia Intl. to San Diego Intl., returning Fri, Sep 12, priced at $269 found 1 day ago

Fri, Sep 5 - Fri, Sep 12

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$270 Roundtrip, found 1 day ago

$270

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Sep 5 from Philadelphia Intl. to San Diego Intl., returning Fri, Sep 12, priced at $270 found 1 day ago

Wed, Sep 3 - Wed, Sep 10

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$273 Roundtrip, found 1 day ago

$273

Roundtrip

found 1 day ago

Select JetBlue Airways flight, departing Wed, Sep 3 from Philadelphia Intl. to San Diego Intl., returning Wed, Sep 10, priced at $273 found 1 day ago

Fri, Sep 5 - Fri, Sep 12

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$273 Roundtrip, found 1 day ago

$273

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Sep 5 from Philadelphia Intl. to San Diego Intl., returning Fri, Sep 12, priced at $273 found 1 day ago

Fri, Sep 5 - Fri, Sep 12

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$276 Roundtrip, found 1 day ago

$276

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Fri, Sep 5 from Philadelphia Intl. to San Diego Intl., returning Fri, Sep 12, priced at $276 found 1 day ago

Tue, Dec 9 - Tue, Dec 16

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$323 Roundtrip, found 2 days ago

$323

Roundtrip

found 2 days ago

Select American Airlines flight, departing Tue, Dec 9 from Philadelphia Intl. to San Diego Intl., returning Tue, Dec 16, priced at $323 found 2 days ago

Fri, Jul 4 - Sat, Jul 12

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$343 Roundtrip, found 3 days ago

$343

Roundtrip

found 3 days ago

Select Delta flight, departing Fri, Jul 4 from Philadelphia Intl. to San Diego Intl., returning Sat, Jul 12, priced at $343 found 3 days ago

Tue, Dec 9 - Tue, Dec 16

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$343 Roundtrip, found 2 days ago

$343

Roundtrip

found 2 days ago

Select United flight, departing Tue, Dec 9 from Philadelphia Intl. to San Diego Intl., returning Tue, Dec 16, priced at $343 found 2 days ago

Wed, Sep 3 - Sat, Sep 13

ABE

Lehigh Valley Intl.

SAN

San Diego Intl.

$375 Roundtrip, found 1 day ago

$375

Roundtrip

found 1 day ago

Select Delta flight, departing Wed, Sep 3 from Lehigh Valley Intl. to San Diego Intl., returning Sat, Sep 13, priced at $375 found 1 day ago

Wed, Dec 10 - Mon, Dec 15

PHL

Philadelphia Intl.

SAN

San Diego Intl.

$378 Roundtrip, found 2 days ago

$378

Roundtrip

found 2 days ago

Select Alaska Airlines flight, departing Wed, Dec 10 from Philadelphia Intl. to San Diego Intl., returning Mon, Dec 15, priced at $378 found 2 days ago

Sat, Jul 26 - Sat, Aug 2

PHL

Philadelphia Intl.

CLD

McClellan-Palomar

$434 Roundtrip, found 3 days ago

$434

Roundtrip

found 3 days ago

Select American Airlines flight, departing Sat, Jul 26 from Philadelphia Intl. to McClellan-Palomar, returning Sat, Aug 2, priced at $434 found 3 days ago