Flights from Boston to Santo Antonio

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.

Wed, Oct 1 - Sun, Oct 26

BOS

Logan Intl.

LIS

Humberto Delgado

$484 Roundtrip, found 3 days ago

$484

Roundtrip

found 3 days ago

Select Icelandair flight, departing Wed, Oct 1 from Logan Intl. to Humberto Delgado, returning Sun, Oct 26, priced at $484 found 3 days ago

Sat, Feb 28 - Tue, Mar 31

BOS

Logan Intl.

LIS

Humberto Delgado

$501 Roundtrip, found 22 hours ago

$501

Roundtrip

found 22 hours ago

Select Virgin Atlantic flight, departing Sat, Feb 28 from Logan Intl. to Humberto Delgado, returning Tue, Mar 31, priced at $501 found 22 hours ago

Sat, Feb 28 - Tue, Mar 31

BOS

Logan Intl.

LIS

Humberto Delgado

$501 Roundtrip, found 22 hours ago

$501

Roundtrip

found 22 hours ago

Select Delta flight, departing Sat, Feb 28 from Logan Intl. to Humberto Delgado, returning Tue, Mar 31, priced at $501 found 22 hours ago

Mon, Sep 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$504 Roundtrip, found 1 day ago

$504

Roundtrip

found 1 day ago

Select United flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $504 found 1 day ago

Sat, Feb 28 - Tue, Mar 31

BOS

Logan Intl.

LIS

Humberto Delgado

$505 Roundtrip, found 22 hours ago

$505

Roundtrip

found 22 hours ago

Select Virgin Atlantic flight, departing Sat, Feb 28 from Logan Intl. to Humberto Delgado, returning Tue, Mar 31, priced at $505 found 22 hours ago

Mon, Sep 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$520 Roundtrip, found 1 day ago

$520

Roundtrip

found 1 day ago

Select Swiss International Air Lines flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $520 found 1 day ago

Sat, Feb 28 - Tue, Mar 31

BOS

Logan Intl.

LIS

Humberto Delgado

$521 Roundtrip, found 22 hours ago

$521

Roundtrip

found 22 hours ago

Select United flight, departing Sat, Feb 28 from Logan Intl. to Humberto Delgado, returning Tue, Mar 31, priced at $521 found 22 hours ago

Sat, Feb 28 - Tue, Mar 31

BOS

Logan Intl.

LIS

Humberto Delgado

$553 Roundtrip, found 22 hours ago

$553

Roundtrip

found 22 hours ago

Select KLM flight, departing Sat, Feb 28 from Logan Intl. to Humberto Delgado, returning Tue, Mar 31, priced at $553 found 22 hours ago

Sat, Feb 28 - Tue, Mar 31

BOS

Logan Intl.

LIS

Humberto Delgado

$554 Roundtrip, found 22 hours ago

$554

Roundtrip

found 22 hours ago

Select Lufthansa flight, departing Sat, Feb 28 from Logan Intl. to Humberto Delgado, returning Tue, Mar 31, priced at $554 found 22 hours ago

Sat, Feb 28 - Tue, Mar 31

BOS

Logan Intl.

LIS

Humberto Delgado

$583 Roundtrip, found 22 hours ago

$583

Roundtrip

found 22 hours ago

Select Air France flight, departing Sat, Feb 28 from Logan Intl. to Humberto Delgado, returning Tue, Mar 31, priced at $583 found 22 hours ago

Mon, Sep 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$588 Roundtrip, found 1 day ago

$588

Roundtrip

found 1 day ago

Select Air Canada flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $588 found 1 day ago

Sat, Feb 28 - Tue, Mar 31

BOS

Logan Intl.

LIS

Humberto Delgado

$631 Roundtrip, found 22 hours ago

$631

Roundtrip

found 22 hours ago

Select American Airlines flight, departing Sat, Feb 28 from Logan Intl. to Humberto Delgado, returning Tue, Mar 31, priced at $631 found 22 hours ago

Sat, Feb 28 - Tue, Mar 31

BOS

Logan Intl.

LIS

Humberto Delgado

$640 Roundtrip, found 22 hours ago

$640

Roundtrip

found 22 hours ago

Select TAP Portugal flight, departing Sat, Feb 28 from Logan Intl. to Humberto Delgado, returning Tue, Mar 31, priced at $640 found 22 hours ago

Sat, Feb 28 - Tue, Mar 31

BOS

Logan Intl.

LIS

Humberto Delgado

$649 Roundtrip, found 22 hours ago

$649

Roundtrip

found 22 hours ago

Select British Airways flight, departing Sat, Feb 28 from Logan Intl. to Humberto Delgado, returning Tue, Mar 31, priced at $649 found 22 hours ago

Wed, Oct 1 - Sun, Oct 26

BOS

Logan Intl.

LIS

Humberto Delgado

$719 Roundtrip, found 3 days ago

$719

Roundtrip

found 3 days ago

Select Iberia flight, departing Wed, Oct 1 from Logan Intl. to Humberto Delgado, returning Sun, Oct 26, priced at $719 found 3 days ago

Sat, Feb 28 - Tue, Mar 31

BOS

Logan Intl.

LIS

Humberto Delgado

$737 Roundtrip, found 22 hours ago

$737

Roundtrip

found 22 hours ago

Select SATA International-Azores Airlines S.A. flight, departing Sat, Feb 28 from Logan Intl. to Humberto Delgado, returning Tue, Mar 31, priced at $737 found 22 hours ago

Sat, Feb 28 - Tue, Mar 31

BOS

Logan Intl.

LIS

Humberto Delgado

$761 Roundtrip, found 22 hours ago

$761

Roundtrip

found 22 hours ago

Select Aer Lingus flight, departing Sat, Feb 28 from Logan Intl. to Humberto Delgado, returning Tue, Mar 31, priced at $761 found 22 hours ago

Mon, Sep 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$879 Roundtrip, found 1 day ago

$879

Roundtrip

found 1 day ago

Select Finnair flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $879 found 1 day ago

Mon, Sep 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$918 Roundtrip, found 1 day ago

$918

Roundtrip

found 1 day ago

Select Scandinavian Airlines flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $918 found 1 day ago

Mon, Sep 8 - Mon, Sep 15

BOS

Logan Intl.

LIS

Humberto Delgado

$1,101 Roundtrip, found 1 day ago

$1,101

Roundtrip

found 1 day ago

Select JetBlue Airways flight, departing Mon, Sep 8 from Logan Intl. to Humberto Delgado, returning Mon, Sep 15, priced at $1,101 found 1 day ago