Flights from Chicago to Lajas

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.

Mon, Aug 25 - Thu, Aug 28

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$248 Roundtrip, found 8 hours ago

$248

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Mon, Aug 25 from O'Hare Intl. to Luis Munoz Marin Intl., returning Thu, Aug 28, priced at $248 found 8 hours ago

Sat, Aug 30 - Sun, Aug 31

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$254 Roundtrip, found 8 hours ago

$254

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Sat, Aug 30 from O'Hare Intl. to Luis Munoz Marin Intl., returning Sun, Aug 31, priced at $254 found 8 hours ago

Mon, Aug 25 - Sat, Aug 30

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$257 Roundtrip, found 8 hours ago

$257

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Mon, Aug 25 from O'Hare Intl. to Luis Munoz Marin Intl., returning Sat, Aug 30, priced at $257 found 8 hours ago

Mon, Oct 6 - Thu, Oct 9

MDW

Midway Intl.

SJU

Luis Munoz Marin Intl.

$258 Roundtrip, found 3 days ago

$258

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Mon, Oct 6 from Midway Intl. to Luis Munoz Marin Intl., returning Thu, Oct 9, priced at $258 found 3 days ago

Thu, Aug 28 - Fri, Aug 29

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$259 Roundtrip, found 8 hours ago

$259

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Thu, Aug 28 from O'Hare Intl. to Luis Munoz Marin Intl., returning Fri, Aug 29, priced at $259 found 8 hours ago

Sun, Aug 31 - Mon, Sep 1

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$261 Roundtrip, found 8 hours ago

$261

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Sun, Aug 31 from O'Hare Intl. to Luis Munoz Marin Intl., returning Mon, Sep 1, priced at $261 found 8 hours ago

Wed, Oct 8 - Wed, Oct 15

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$264 Roundtrip, found 3 days ago

$264

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Wed, Oct 8 from O'Hare Intl. to Luis Munoz Marin Intl., returning Wed, Oct 15, priced at $264 found 3 days ago

Thu, Oct 9 - Thu, Oct 9

MDW

Midway Intl.

SJU

Luis Munoz Marin Intl.

$266 Roundtrip, found 3 days ago

$266

Roundtrip

found 3 days ago

Select Frontier Airlines flight, departing Thu, Oct 9 from Midway Intl. to Luis Munoz Marin Intl., returning Thu, Oct 9, priced at $266 found 3 days ago

Mon, Aug 25 - Mon, Sep 1

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$266 Roundtrip, found 8 hours ago

$266

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Mon, Aug 25 from O'Hare Intl. to Luis Munoz Marin Intl., returning Mon, Sep 1, priced at $266 found 8 hours ago

Thu, Aug 28 - Sat, Aug 30

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$268 Roundtrip, found 8 hours ago

$268

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Thu, Aug 28 from O'Hare Intl. to Luis Munoz Marin Intl., returning Sat, Aug 30, priced at $268 found 8 hours ago

Thu, Aug 28 - Mon, Sep 1

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$277 Roundtrip, found 8 hours ago

$277

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Thu, Aug 28 from O'Hare Intl. to Luis Munoz Marin Intl., returning Mon, Sep 1, priced at $277 found 8 hours ago

Fri, Sep 19 - Thu, Sep 25

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$279 Roundtrip, found 5 days ago

$279

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Fri, Sep 19 from O'Hare Intl. to Luis Munoz Marin Intl., returning Thu, Sep 25, priced at $279 found 5 days ago

Sun, Sep 21 - Mon, Sep 22

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$281 Roundtrip, found 5 days ago

$281

Roundtrip

found 5 days ago

Select Frontier Airlines flight, departing Sun, Sep 21 from O'Hare Intl. to Luis Munoz Marin Intl., returning Mon, Sep 22, priced at $281 found 5 days ago

Mon, Sep 22 - Thu, Sep 25

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$282 Roundtrip, found 5 days ago

$282

Roundtrip

found 5 days ago

Select Spirit Airlines flight, departing Mon, Sep 22 from O'Hare Intl. to Luis Munoz Marin Intl., returning Thu, Sep 25, priced at $282 found 5 days ago

Fri, Aug 29 - Fri, Aug 29

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$286 Roundtrip, found 8 hours ago

$286

Roundtrip

found 8 hours ago

Select Frontier Airlines flight, departing Fri, Aug 29 from O'Hare Intl. to Luis Munoz Marin Intl., returning Fri, Aug 29, priced at $286 found 8 hours ago

Tue, Aug 26 - Thu, Aug 28

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$290 Roundtrip, found 8 hours ago

$290

Roundtrip

found 8 hours ago

Select Spirit Airlines flight, departing Tue, Aug 26 from O'Hare Intl. to Luis Munoz Marin Intl., returning Thu, Aug 28, priced at $290 found 8 hours ago

Tue, Oct 7 - Sat, Oct 11

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$321 Roundtrip, found 3 days ago

$321

Roundtrip

found 3 days ago

Select Delta flight, departing Tue, Oct 7 from O'Hare Intl. to Luis Munoz Marin Intl., returning Sat, Oct 11, priced at $321 found 3 days ago

Fri, Sep 19 - Thu, Sep 25

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$382 Roundtrip, found 5 days ago

$382

Roundtrip

found 5 days ago

Select United flight, departing Fri, Sep 19 from O'Hare Intl. to Luis Munoz Marin Intl., returning Thu, Sep 25, priced at $382 found 5 days ago

Sun, Feb 1 - Sun, Feb 15

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$387 Roundtrip, found 21 hours ago

$387

Roundtrip

found 21 hours ago

Select American Airlines flight, departing Sun, Feb 1 from O'Hare Intl. to Luis Munoz Marin Intl., returning Sun, Feb 15, priced at $387 found 21 hours ago

Sun, Jan 4 - Mon, Jan 12

ORD

O'Hare Intl.

SJU

Luis Munoz Marin Intl.

$468 Roundtrip, found 2 days ago

$468

Roundtrip

found 2 days ago

Select JetBlue Airways flight, departing Sun, Jan 4 from O'Hare Intl. to Luis Munoz Marin Intl., returning Mon, Jan 12, priced at $468 found 2 days ago