Flights from Chicago to El Cajon

Cheapest flights from Chicago

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.

Wed, Jul 16 - Tue, Jul 22

ORD

O'Hare Intl.

SAN

San Diego Intl.

$167 Roundtrip, found 7 hours ago

$167

Roundtrip

found 7 hours ago

Select Spirit Airlines flight, departing Wed, Jul 16 from O'Hare Intl. to San Diego Intl., returning Tue, Jul 22, priced at $167 found 7 hours ago

Wed, Jun 25 - Mon, Jun 30

ORD

O'Hare Intl.

SAN

San Diego Intl.

$175 Roundtrip, found 5 days ago

$175

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Wed, Jun 25 from O'Hare Intl. to San Diego Intl., returning Mon, Jun 30, priced at $175 found 5 days ago

Thu, Jun 26 - Sat, Jun 28

ORD

O'Hare Intl.

SAN

San Diego Intl.

$176 Roundtrip, found 5 days ago

$176

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Thu, Jun 26 from O'Hare Intl. to San Diego Intl., returning Sat, Jun 28, priced at $176 found 5 days ago

Sat, Jun 28 - Mon, Jun 30

ORD

O'Hare Intl.

SAN

San Diego Intl.

$182 Roundtrip, found 5 days ago

$182

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Sat, Jun 28 from O'Hare Intl. to San Diego Intl., returning Mon, Jun 30, priced at $182 found 5 days ago

Tue, Jul 22 - Wed, Jul 23

ORD

O'Hare Intl.

SAN

San Diego Intl.

$186 Roundtrip, found 7 hours ago

$186

Roundtrip

found 7 hours ago

Select Spirit Airlines flight, departing Tue, Jul 22 from O'Hare Intl. to San Diego Intl., returning Wed, Jul 23, priced at $186 found 7 hours ago

Sat, Jun 28 - Wed, Jul 2

ORD

O'Hare Intl.

SAN

San Diego Intl.

$189 Roundtrip, found 5 days ago

$189

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Sat, Jun 28 from O'Hare Intl. to San Diego Intl., returning Wed, Jul 2, priced at $189 found 5 days ago

Tue, Jun 24 - Wed, Jun 25

ORD

O'Hare Intl.

SAN

San Diego Intl.

$193 Roundtrip, found 5 days ago

$193

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Tue, Jun 24 from O'Hare Intl. to San Diego Intl., returning Wed, Jun 25, priced at $193 found 5 days ago

Wed, Jun 25 - Sat, Jun 28

ORD

O'Hare Intl.

SAN

San Diego Intl.

$194 Roundtrip, found 5 days ago

$194

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Wed, Jun 25 from O'Hare Intl. to San Diego Intl., returning Sat, Jun 28, priced at $194 found 5 days ago

Tue, Jun 24 - Mon, Jun 30

ORD

O'Hare Intl.

SAN

San Diego Intl.

$195 Roundtrip, found 5 days ago

$195

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Tue, Jun 24 from O'Hare Intl. to San Diego Intl., returning Mon, Jun 30, priced at $195 found 5 days ago

Thu, Jun 26 - Sat, Jun 28

ORD

O'Hare Intl.

SAN

San Diego Intl.

$196 Roundtrip, found 5 days ago

$196

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Thu, Jun 26 from O'Hare Intl. to San Diego Intl., returning Sat, Jun 28, priced at $196 found 5 days ago

Thu, Jun 26 - Sat, Jun 28

ORD

O'Hare Intl.

SAN

San Diego Intl.

$199 Roundtrip, found 5 days ago

$199

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Thu, Jun 26 from O'Hare Intl. to San Diego Intl., returning Sat, Jun 28, priced at $199 found 5 days ago

Tue, Jun 24 - Wed, Jul 2

ORD

O'Hare Intl.

SAN

San Diego Intl.

$202 Roundtrip, found 5 days ago

$202

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Tue, Jun 24 from O'Hare Intl. to San Diego Intl., returning Wed, Jul 2, priced at $202 found 5 days ago

Wed, Jul 16 - Sat, Jul 19

ORD

O'Hare Intl.

SAN

San Diego Intl.

$203 Roundtrip, found 7 hours ago

$203

Roundtrip

found 7 hours ago

Select Spirit Airlines flight, departing Wed, Jul 16 from O'Hare Intl. to San Diego Intl., returning Sat, Jul 19, priced at $203 found 7 hours ago

Tue, Jul 22 - Sun, Jul 27

ORD

O'Hare Intl.

SAN

San Diego Intl.

$237 Roundtrip, found 1 day ago

$237

Roundtrip

found 1 day ago

Select United flight, departing Tue, Jul 22 from O'Hare Intl. to San Diego Intl., returning Sun, Jul 27, priced at $237 found 1 day ago

Tue, Aug 12 - Tue, Aug 12

ORD

O'Hare Intl.

SAN

San Diego Intl.

$246 Roundtrip, found 7 hours ago

$246

Roundtrip

found 7 hours ago

Select American Airlines flight, departing Tue, Aug 12 from O'Hare Intl. to San Diego Intl., returning Tue, Aug 12, priced at $246 found 7 hours ago

Tue, Jun 24 - Tue, Jul 1

MDW

Midway Intl.

SAN

San Diego Intl.

$270 Roundtrip, found 1 day ago

$270

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Tue, Jun 24 from Midway Intl. to San Diego Intl., returning Tue, Jul 1, priced at $270 found 1 day ago

Thu, Jun 26 - Sat, Jun 28

ORD

O'Hare Intl.

CLD

McClellan-Palomar

$297 Roundtrip, found 5 days ago

$297

Roundtrip

found 5 days ago

Select American Airlines flight, departing Thu, Jun 26 from O'Hare Intl. to McClellan-Palomar, returning Sat, Jun 28, priced at $297 found 5 days ago

Tue, Jul 22 - Sun, Jul 27

ORD

O'Hare Intl.

SAN

San Diego Intl.

$384 Roundtrip, found 1 day ago

$384

Roundtrip

found 1 day ago

Select Delta flight, departing Tue, Jul 22 from O'Hare Intl. to San Diego Intl., returning Sun, Jul 27, priced at $384 found 1 day ago

Tue, Jul 22 - Sun, Jul 27

ORD

O'Hare Intl.

SAN

San Diego Intl.

$457 Roundtrip, found 1 day ago

$457

Roundtrip

found 1 day ago

Select Alaska Airlines flight, departing Tue, Jul 22 from O'Hare Intl. to San Diego Intl., returning Sun, Jul 27, priced at $457 found 1 day ago

Wed, Jun 11 - Wed, Jun 11

ORD

O'Hare Intl.

SAN

San Diego Intl.

$676 Roundtrip, found 2 days ago

$676

Roundtrip

found 2 days ago

Select Hawaiian Airlines flight, departing Wed, Jun 11 from O'Hare Intl. to San Diego Intl., returning Wed, Jun 11, priced at $676 found 2 days ago