Flights from Boston to Alcacer do Sal

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.

Fri, Oct 3 - Mon, Oct 27

BOS

Logan Intl.

LIS

Humberto Delgado

$557 Roundtrip, found 5 days ago

$557

Roundtrip

found 5 days ago

Select Scandinavian Airlines flight, departing Fri, Oct 3 from Logan Intl. to Humberto Delgado, returning Mon, Oct 27, priced at $557 found 5 days ago

Thu, Oct 2 - Mon, Oct 27

BOS

Logan Intl.

LIS

Humberto Delgado

$597 Roundtrip, found 5 days ago

$597

Roundtrip

found 5 days ago

Select Scandinavian Airlines flight, departing Thu, Oct 2 from Logan Intl. to Humberto Delgado, returning Mon, Oct 27, priced at $597 found 5 days ago

Tue, Sep 30 - Thu, Oct 30

BOS

Logan Intl.

LIS

Humberto Delgado

$611 Roundtrip, found 5 days ago

$611

Roundtrip

found 5 days ago

Select American Airlines flight, departing Tue, Sep 30 from Logan Intl. to Humberto Delgado, returning Thu, Oct 30, priced at $611 found 5 days ago

Tue, Sep 30 - Thu, Oct 30

BOS

Logan Intl.

LIS

Humberto Delgado

$612 Roundtrip, found 5 days ago

$612

Roundtrip

found 5 days ago

Select British Airways flight, departing Tue, Sep 30 from Logan Intl. to Humberto Delgado, returning Thu, Oct 30, priced at $612 found 5 days ago

Tue, Sep 30 - Thu, Oct 30

BOS

Logan Intl.

LIS

Humberto Delgado

$620 Roundtrip, found 5 days ago

$620

Roundtrip

found 5 days ago

Select British Airways flight, departing Tue, Sep 30 from Logan Intl. to Humberto Delgado, returning Thu, Oct 30, priced at $620 found 5 days ago

Mon, Sep 29 - Wed, Oct 29

BOS

Logan Intl.

LIS

Humberto Delgado

$630 Roundtrip, found 5 days ago

$630

Roundtrip

found 5 days ago

Select United flight, departing Mon, Sep 29 from Logan Intl. to Humberto Delgado, returning Wed, Oct 29, priced at $630 found 5 days ago

Sat, Sep 27 - Wed, Oct 29

BOS

Logan Intl.

LIS

Humberto Delgado

$634 Roundtrip, found 5 days ago

$634

Roundtrip

found 5 days ago

Select United flight, departing Sat, Sep 27 from Logan Intl. to Humberto Delgado, returning Wed, Oct 29, priced at $634 found 5 days ago

Tue, Sep 30 - Thu, Oct 30

BOS

Logan Intl.

LIS

Humberto Delgado

$636 Roundtrip, found 5 days ago

$636

Roundtrip

found 5 days ago

Select Air Canada flight, departing Tue, Sep 30 from Logan Intl. to Humberto Delgado, returning Thu, Oct 30, priced at $636 found 5 days ago

Tue, Sep 30 - Thu, Oct 30

BOS

Logan Intl.

LIS

Humberto Delgado

$639 Roundtrip, found 5 days ago

$639

Roundtrip

found 5 days ago

Select United flight, departing Tue, Sep 30 from Logan Intl. to Humberto Delgado, returning Thu, Oct 30, priced at $639 found 5 days ago

Tue, Sep 30 - Thu, Oct 30

BOS

Logan Intl.

LIS

Humberto Delgado

$641 Roundtrip, found 5 days ago

$641

Roundtrip

found 5 days ago

Select British Airways flight, departing Tue, Sep 30 from Logan Intl. to Humberto Delgado, returning Thu, Oct 30, priced at $641 found 5 days ago

Tue, Sep 30 - Thu, Oct 30

BOS

Logan Intl.

LIS

Humberto Delgado

$649 Roundtrip, found 5 days ago

$649

Roundtrip

found 5 days ago

Select Swiss International Air Lines flight, departing Tue, Sep 30 from Logan Intl. to Humberto Delgado, returning Thu, Oct 30, priced at $649 found 5 days ago

Tue, Sep 30 - Thu, Oct 30

BOS

Logan Intl.

LIS

Humberto Delgado

$761 Roundtrip, found 5 days ago

$761

Roundtrip

found 5 days ago

Select Iberia flight, departing Tue, Sep 30 from Logan Intl. to Humberto Delgado, returning Thu, Oct 30, priced at $761 found 5 days ago

Tue, Sep 30 - Thu, Oct 30

BOS

Logan Intl.

LIS

Humberto Delgado

$891 Roundtrip, found 5 days ago

$891

Roundtrip

found 5 days ago

Select Air Canada flight, departing Tue, Sep 30 from Logan Intl. to Humberto Delgado, returning Thu, Oct 30, priced at $891 found 5 days ago

Wed, Aug 27 - Sun, Sep 7

BOS

Logan Intl.

LIS

Humberto Delgado

$891 Roundtrip, found 6 days ago

$891

Roundtrip

found 6 days ago

Select Icelandair flight, departing Wed, Aug 27 from Logan Intl. to Humberto Delgado, returning Sun, Sep 7, priced at $891 found 6 days ago

Wed, Aug 27 - Sun, Sep 7

BOS

Logan Intl.

LIS

Humberto Delgado

$920 Roundtrip, found 6 days ago

$920

Roundtrip

found 6 days ago

Select Finnair flight, departing Wed, Aug 27 from Logan Intl. to Humberto Delgado, returning Sun, Sep 7, priced at $920 found 6 days ago

Wed, Aug 27 - Sun, Sep 7

BOS

Logan Intl.

LIS

Humberto Delgado

$1,260 Roundtrip, found 6 days ago

$1,260

Roundtrip

found 6 days ago

Select Brussels Airlines flight, departing Wed, Aug 27 from Logan Intl. to Humberto Delgado, returning Sun, Sep 7, priced at $1,260 found 6 days ago