Flights from Boston to Cascais

Cheapest flights from Boston

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 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$425 Roundtrip, just found

$425

Roundtrip

just found

Select LEVEL flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $425 just found

Wed, Sep 10 - Fri, Sep 12

BOS

Logan Intl.

LIS

Humberto Delgado

$425 Roundtrip, just found

$425

Roundtrip

just found

Select British Airways flight, departing Wed, Sep 10 from Logan Intl. to Humberto Delgado, returning Fri, Sep 12, priced at $425 just found

Tue, Oct 28 - Fri, Nov 14

BOS

Logan Intl.

LIS

Humberto Delgado

$447 Roundtrip, found 1 day ago

$447

Roundtrip

found 1 day ago

Select Scandinavian Airlines flight, departing Tue, Oct 28 from Logan Intl. to Humberto Delgado, returning Fri, Nov 14, priced at $447 found 1 day ago

Wed, Oct 1 - Sun, Oct 19

BOS

Logan Intl.

LIS

Humberto Delgado

$462 Roundtrip, found 1 day ago

$462

Roundtrip

found 1 day ago

Select Icelandair flight, departing Wed, Oct 1 from Logan Intl. to Humberto Delgado, returning Sun, Oct 19, priced at $462 found 1 day ago

Tue, Sep 30 - Fri, Oct 17

BOS

Logan Intl.

LIS

Humberto Delgado

$485 Roundtrip, found 1 day ago

$485

Roundtrip

found 1 day ago

Select United flight, departing Tue, Sep 30 from Logan Intl. to Humberto Delgado, returning Fri, Oct 17, priced at $485 found 1 day ago

Sat, Sep 6 - Wed, Sep 17

BOS

Logan Intl.

LIS

Humberto Delgado

$491 Roundtrip, just found

$491

Roundtrip

just found

Select TAP Portugal flight, departing Sat, Sep 6 from Logan Intl. to Humberto Delgado, returning Wed, Sep 17, priced at $491 just found

Mon, Oct 27 - Wed, Nov 12

BOS

Logan Intl.

LIS

Humberto Delgado

$495 Roundtrip, found 1 day ago

$495

Roundtrip

found 1 day ago

Select Virgin Atlantic flight, departing Mon, Oct 27 from Logan Intl. to Humberto Delgado, returning Wed, Nov 12, priced at $495 found 1 day ago

Tue, Sep 2 - Thu, Sep 18

BOS

Logan Intl.

LIS

Humberto Delgado

$499 Roundtrip, found 1 day ago

$499

Roundtrip

found 1 day ago

Select Air Canada flight, departing Tue, Sep 2 from Logan Intl. to Humberto Delgado, returning Thu, Sep 18, priced at $499 found 1 day ago

Wed, Oct 22 - Fri, Nov 7

BOS

Logan Intl.

LIS

Humberto Delgado

$514 Roundtrip, found 1 day ago

$514

Roundtrip

found 1 day ago

Select Delta flight, departing Wed, Oct 22 from Logan Intl. to Humberto Delgado, returning Fri, Nov 7, priced at $514 found 1 day ago

Mon, Sep 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$517 Roundtrip, just found

$517

Roundtrip

just found

Select American Airlines flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $517 just found

Mon, Sep 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$520 Roundtrip, just found

$520

Roundtrip

just found

Select Swiss International Air Lines flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $520 just found

Mon, Sep 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$653 Roundtrip, just found

$653

Roundtrip

just found

Select Air France flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $653 just found

Mon, Sep 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$684 Roundtrip, just found

$684

Roundtrip

just found

Select KLM flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $684 just found

Mon, Sep 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$747 Roundtrip, just found

$747

Roundtrip

just found

Select Iberia flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $747 just found

Thu, Oct 16 - Mon, Nov 3

BOS

Logan Intl.

LIS

Humberto Delgado

$760 Roundtrip, found 1 day ago

$760

Roundtrip

found 1 day ago

Select Turkish Airlines flight, departing Thu, Oct 16 from Logan Intl. to Humberto Delgado, returning Mon, Nov 3, priced at $760 found 1 day ago

Mon, Sep 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$833 Roundtrip, just found

$833

Roundtrip

just found

Select Lufthansa flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $833 just found

Mon, Sep 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$880 Roundtrip, just found

$880

Roundtrip

just found

Select Finnair flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $880 just found

Mon, Sep 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$979 Roundtrip, just found

$979

Roundtrip

just found

Select Aer Lingus flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $979 just found

Mon, Sep 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$1,051 Roundtrip, just found

$1,051

Roundtrip

just found

Select SATA International-Azores Airlines S.A. flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $1,051 just found

Mon, Sep 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$1,130 Roundtrip, just found

$1,130

Roundtrip

just found

Select JetBlue Airways flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $1,130 just found