Flights from Boston to Sintra

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.

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$667 Roundtrip, found 22 hours ago

$667

Roundtrip

found 22 hours ago

Select United flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $667 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$673 Roundtrip, found 22 hours ago

$673

Roundtrip

found 22 hours ago

Select Air Canada flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $673 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$683 Roundtrip, found 22 hours ago

$683

Roundtrip

found 22 hours ago

Select United flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $683 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$687 Roundtrip, found 22 hours ago

$687

Roundtrip

found 22 hours ago

Select Swiss International Air Lines flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $687 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$688 Roundtrip, found 22 hours ago

$688

Roundtrip

found 22 hours ago

Select United flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $688 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$689 Roundtrip, found 22 hours ago

$689

Roundtrip

found 22 hours ago

Select Lufthansa flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $689 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$693 Roundtrip, found 22 hours ago

$693

Roundtrip

found 22 hours ago

Select Swiss International Air Lines flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $693 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$693 Roundtrip, found 22 hours ago

$693

Roundtrip

found 22 hours ago

Select United flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $693 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$695 Roundtrip, found 22 hours ago

$695

Roundtrip

found 22 hours ago

Select United flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $695 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$701 Roundtrip, found 22 hours ago

$701

Roundtrip

found 22 hours ago

Select British Airways flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $701 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$717 Roundtrip, found 22 hours ago

$717

Roundtrip

found 22 hours ago

Select Iberia flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $717 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$755 Roundtrip, found 22 hours ago

$755

Roundtrip

found 22 hours ago

Select Virgin Atlantic flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $755 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$755 Roundtrip, found 22 hours ago

$755

Roundtrip

found 22 hours ago

Select Delta flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $755 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$807 Roundtrip, found 22 hours ago

$807

Roundtrip

found 22 hours ago

Select KLM flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $807 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$809 Roundtrip, found 22 hours ago

$809

Roundtrip

found 22 hours ago

Select Air France flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $809 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$847 Roundtrip, found 22 hours ago

$847

Roundtrip

found 22 hours ago

Select TAP Portugal flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $847 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$867 Roundtrip, found 22 hours ago

$867

Roundtrip

found 22 hours ago

Select SATA International-Azores Airlines S.A. flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $867 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$868 Roundtrip, found 22 hours ago

$868

Roundtrip

found 22 hours ago

Select Turkish Airlines flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $868 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$940 Roundtrip, found 22 hours ago

$940

Roundtrip

found 22 hours ago

Select Aer Lingus flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $940 found 22 hours ago

Thu, Jan 1 - Tue, Feb 3

BOS

Logan Intl.

LIS

Humberto Delgado

$1,073 Roundtrip, found 22 hours ago

$1,073

Roundtrip

found 22 hours ago

Select JetBlue Airways flight, departing Thu, Jan 1 from Logan Intl. to Humberto Delgado, returning Tue, Feb 3, priced at $1,073 found 22 hours ago