Flights from Chicago to Estrela

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, Sep 29 - Tue, Oct 7

ORD

O'Hare Intl.

LIS

Humberto Delgado

$580 Roundtrip, found 2 days ago

$580

Roundtrip

found 2 days ago

Select United flight, departing Mon, Sep 29 from O'Hare Intl. to Humberto Delgado, returning Tue, Oct 7, priced at $580 found 2 days ago

Sun, Sep 28 - Tue, Oct 7

ORD

O'Hare Intl.

LIS

Humberto Delgado

$582 Roundtrip, found 2 days ago

$582

Roundtrip

found 2 days ago

Select United flight, departing Sun, Sep 28 from O'Hare Intl. to Humberto Delgado, returning Tue, Oct 7, priced at $582 found 2 days ago

Sun, Sep 28 - Thu, Oct 9

ORD

O'Hare Intl.

LIS

Humberto Delgado

$597 Roundtrip, found 2 days ago

$597

Roundtrip

found 2 days ago

Select Virgin Atlantic flight, departing Sun, Sep 28 from O'Hare Intl. to Humberto Delgado, returning Thu, Oct 9, priced at $597 found 2 days ago

Sun, Sep 28 - Wed, Oct 8

ORD

O'Hare Intl.

LIS

Humberto Delgado

$598 Roundtrip, found 2 days ago

$598

Roundtrip

found 2 days ago

Select Virgin Atlantic flight, departing Sun, Sep 28 from O'Hare Intl. to Humberto Delgado, returning Wed, Oct 8, priced at $598 found 2 days ago

Tue, Sep 30 - Tue, Oct 7

ORD

O'Hare Intl.

LIS

Humberto Delgado

$615 Roundtrip, found 2 days ago

$615

Roundtrip

found 2 days ago

Select Swiss International Air Lines flight, departing Tue, Sep 30 from O'Hare Intl. to Humberto Delgado, returning Tue, Oct 7, priced at $615 found 2 days ago

Tue, Sep 30 - Thu, Oct 9

ORD

O'Hare Intl.

LIS

Humberto Delgado

$637 Roundtrip, found 2 days ago

$637

Roundtrip

found 2 days ago

Select Air France flight, departing Tue, Sep 30 from O'Hare Intl. to Humberto Delgado, returning Thu, Oct 9, priced at $637 found 2 days ago

Tue, Sep 30 - Wed, Oct 8

ORD

O'Hare Intl.

LIS

Humberto Delgado

$639 Roundtrip, found 2 days ago

$639

Roundtrip

found 2 days ago

Select Air France flight, departing Tue, Sep 30 from O'Hare Intl. to Humberto Delgado, returning Wed, Oct 8, priced at $639 found 2 days ago

Wed, Oct 1 - Thu, Oct 9

ORD

O'Hare Intl.

LIS

Humberto Delgado

$642 Roundtrip, found 2 days ago

$642

Roundtrip

found 2 days ago

Select Delta flight, departing Wed, Oct 1 from O'Hare Intl. to Humberto Delgado, returning Thu, Oct 9, priced at $642 found 2 days ago

Sat, Sep 27 - Fri, Oct 3

ORD

O'Hare Intl.

LIS

Humberto Delgado

$691 Roundtrip, found 2 days ago

$691

Roundtrip

found 2 days ago

Select Turkish Airlines flight, departing Sat, Sep 27 from O'Hare Intl. to Humberto Delgado, returning Fri, Oct 3, priced at $691 found 2 days ago

Tue, Sep 30 - Mon, Oct 6

ORD

O'Hare Intl.

LIS

Humberto Delgado

$726 Roundtrip, found 2 days ago

$726

Roundtrip

found 2 days ago

Select Swiss International Air Lines flight, departing Tue, Sep 30 from O'Hare Intl. to Humberto Delgado, returning Mon, Oct 6, priced at $726 found 2 days ago

Sat, Sep 27 - Sat, Oct 4

ORD

O'Hare Intl.

LIS

Humberto Delgado

$733 Roundtrip, found 2 days ago

$733

Roundtrip

found 2 days ago

Select British Airways flight, departing Sat, Sep 27 from O'Hare Intl. to Humberto Delgado, returning Sat, Oct 4, priced at $733 found 2 days ago

Fri, Sep 12 - Fri, Sep 19

ORD

O'Hare Intl.

LIS

Humberto Delgado

$802 Roundtrip, found 15 hours ago

$802

Roundtrip

found 15 hours ago

Select TAP Portugal flight, departing Fri, Sep 12 from O'Hare Intl. to Humberto Delgado, returning Fri, Sep 19, priced at $802 found 15 hours ago

Fri, Sep 12 - Wed, Sep 17

ORD

O'Hare Intl.

LIS

Humberto Delgado

$856 Roundtrip, found 15 hours ago

$856

Roundtrip

found 15 hours ago

Select Air Canada flight, departing Fri, Sep 12 from O'Hare Intl. to Humberto Delgado, returning Wed, Sep 17, priced at $856 found 15 hours ago

Mon, Sep 15 - Sat, Sep 20

ORD

O'Hare Intl.

LIS

Humberto Delgado

$1,134 Roundtrip, found 15 hours ago

$1,134

Roundtrip

found 15 hours ago

Select Aer Lingus flight, departing Mon, Sep 15 from O'Hare Intl. to Humberto Delgado, returning Sat, Sep 20, priced at $1,134 found 15 hours ago

Mon, Sep 15 - Sat, Sep 20

ORD

O'Hare Intl.

LIS

Humberto Delgado

$1,648 Roundtrip, found 15 hours ago

$1,648

Roundtrip

found 15 hours ago

Select JetBlue Airways flight, departing Mon, Sep 15 from O'Hare Intl. to Humberto Delgado, returning Sat, Sep 20, priced at $1,648 found 15 hours ago

Mon, Sep 15 - Sat, Sep 20

ORD

O'Hare Intl.

LIS

Humberto Delgado

$1,864 Roundtrip, found 15 hours ago

$1,864

Roundtrip

found 15 hours ago

Select American Airlines flight, departing Mon, Sep 15 from O'Hare Intl. to Humberto Delgado, returning Sat, Sep 20, priced at $1,864 found 15 hours ago

Mon, Sep 15 - Sat, Sep 20

ORD

O'Hare Intl.

LIS

Humberto Delgado

$1,977 Roundtrip, found 15 hours ago

$1,977

Roundtrip

found 15 hours ago

Select KLM flight, departing Mon, Sep 15 from O'Hare Intl. to Humberto Delgado, returning Sat, Sep 20, priced at $1,977 found 15 hours ago

Mon, Sep 15 - Sat, Sep 20

ORD

O'Hare Intl.

LIS

Humberto Delgado

$2,062 Roundtrip, found 15 hours ago

$2,062

Roundtrip

found 15 hours ago

Select Finnair flight, departing Mon, Sep 15 from O'Hare Intl. to Humberto Delgado, returning Sat, Sep 20, priced at $2,062 found 15 hours ago

Mon, Sep 15 - Sat, Sep 20

ORD

O'Hare Intl.

LIS

Humberto Delgado

$2,081 Roundtrip, found 15 hours ago

$2,081

Roundtrip

found 15 hours ago

Select Iberia flight, departing Mon, Sep 15 from O'Hare Intl. to Humberto Delgado, returning Sat, Sep 20, priced at $2,081 found 15 hours ago

Mon, Sep 15 - Sat, Sep 20

ORD

O'Hare Intl.

LIS

Humberto Delgado

$2,326 Roundtrip, found 15 hours ago

$2,326

Roundtrip

found 15 hours ago

Select LOT-Polish Airlines flight, departing Mon, Sep 15 from O'Hare Intl. to Humberto Delgado, returning Sat, Sep 20, priced at $2,326 found 15 hours ago