Flights from Boston to Assentiz

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.

Tue, Oct 7 - Tue, Oct 14

BOS

Logan Intl.

LIS

Humberto Delgado

$507 Roundtrip, found 23 hours ago

$507

Roundtrip

found 23 hours ago

Select LEVEL flight, departing Tue, Oct 7 from Logan Intl. to Humberto Delgado, returning Tue, Oct 14, priced at $507 found 23 hours ago

Tue, Oct 7 - Tue, Oct 14

BOS

Logan Intl.

LIS

Humberto Delgado

$513 Roundtrip, found 23 hours ago

$513

Roundtrip

found 23 hours ago

Select LEVEL flight, departing Tue, Oct 7 from Logan Intl. to Humberto Delgado, returning Tue, Oct 14, priced at $513 found 23 hours ago

Tue, Oct 7 - Tue, Oct 14

BOS

Logan Intl.

LIS

Humberto Delgado

$515 Roundtrip, found 23 hours ago

$515

Roundtrip

found 23 hours ago

Select LEVEL flight, departing Tue, Oct 7 from Logan Intl. to Humberto Delgado, returning Tue, Oct 14, priced at $515 found 23 hours ago

Tue, Oct 7 - Tue, Oct 14

BOS

Logan Intl.

LIS

Humberto Delgado

$520 Roundtrip, found 23 hours ago

$520

Roundtrip

found 23 hours ago

Select LEVEL flight, departing Tue, Oct 7 from Logan Intl. to Humberto Delgado, returning Tue, Oct 14, priced at $520 found 23 hours ago

Tue, Oct 7 - Tue, Oct 14

BOS

Logan Intl.

LIS

Humberto Delgado

$522 Roundtrip, found 23 hours ago

$522

Roundtrip

found 23 hours ago

Select LEVEL flight, departing Tue, Oct 7 from Logan Intl. to Humberto Delgado, returning Tue, Oct 14, priced at $522 found 23 hours ago

Tue, Oct 7 - Tue, Oct 14

BOS

Logan Intl.

LIS

Humberto Delgado

$551 Roundtrip, found 23 hours ago

$551

Roundtrip

found 23 hours ago

Select American Airlines flight, departing Tue, Oct 7 from Logan Intl. to Humberto Delgado, returning Tue, Oct 14, priced at $551 found 23 hours ago

Tue, Oct 7 - Tue, Oct 14

BOS

Logan Intl.

LIS

Humberto Delgado

$552 Roundtrip, found 23 hours ago

$552

Roundtrip

found 23 hours ago

Select British Airways flight, departing Tue, Oct 7 from Logan Intl. to Humberto Delgado, returning Tue, Oct 14, priced at $552 found 23 hours ago

Sun, Sep 21 - Thu, Oct 2

BOS

Logan Intl.

LIS

Humberto Delgado

$599 Roundtrip, found 6 days ago

$599

Roundtrip

found 6 days ago

Select TAP Portugal flight, departing Sun, Sep 21 from Logan Intl. to Humberto Delgado, returning Thu, Oct 2, priced at $599 found 6 days ago

Tue, Oct 7 - Tue, Oct 14

BOS

Logan Intl.

LIS

Humberto Delgado

$609 Roundtrip, found 23 hours ago

$609

Roundtrip

found 23 hours ago

Select Air Canada flight, departing Tue, Oct 7 from Logan Intl. to Humberto Delgado, returning Tue, Oct 14, priced at $609 found 23 hours ago

Mon, Sep 22 - Tue, Sep 30

BOS

Logan Intl.

LIS

Humberto Delgado

$609 Roundtrip, found 6 days ago

$609

Roundtrip

found 6 days ago

Select United flight, departing Mon, Sep 22 from Logan Intl. to Humberto Delgado, returning Tue, Sep 30, priced at $609 found 6 days ago

Tue, Oct 7 - Tue, Oct 14

BOS

Logan Intl.

LIS

Humberto Delgado

$635 Roundtrip, found 23 hours ago

$635

Roundtrip

found 23 hours ago

Select Virgin Atlantic flight, departing Tue, Oct 7 from Logan Intl. to Humberto Delgado, returning Tue, Oct 14, priced at $635 found 23 hours ago

Tue, Oct 7 - Tue, Oct 14

BOS

Logan Intl.

LIS

Humberto Delgado

$635 Roundtrip, found 23 hours ago

$635

Roundtrip

found 23 hours ago

Select Delta flight, departing Tue, Oct 7 from Logan Intl. to Humberto Delgado, returning Tue, Oct 14, priced at $635 found 23 hours ago

Tue, Oct 7 - Tue, Oct 14

BOS

Logan Intl.

LIS

Humberto Delgado

$640 Roundtrip, found 23 hours ago

$640

Roundtrip

found 23 hours ago

Select Lufthansa flight, departing Tue, Oct 7 from Logan Intl. to Humberto Delgado, returning Tue, Oct 14, priced at $640 found 23 hours ago

Tue, Oct 7 - Tue, Oct 14

BOS

Logan Intl.

LIS

Humberto Delgado

$661 Roundtrip, found 23 hours ago

$661

Roundtrip

found 23 hours ago

Select Swiss International Air Lines flight, departing Tue, Oct 7 from Logan Intl. to Humberto Delgado, returning Tue, Oct 14, priced at $661 found 23 hours ago

Tue, Oct 7 - Tue, Oct 14

BOS

Logan Intl.

LIS

Humberto Delgado

$687 Roundtrip, found 23 hours ago

$687

Roundtrip

found 23 hours ago

Select KLM flight, departing Tue, Oct 7 from Logan Intl. to Humberto Delgado, returning Tue, Oct 14, priced at $687 found 23 hours ago

Tue, Oct 7 - Tue, Oct 14

BOS

Logan Intl.

LIS

Humberto Delgado

$687 Roundtrip, found 23 hours ago

$687

Roundtrip

found 23 hours ago

Select Air France flight, departing Tue, Oct 7 from Logan Intl. to Humberto Delgado, returning Tue, Oct 14, priced at $687 found 23 hours ago

Tue, Oct 7 - Tue, Oct 14

BOS

Logan Intl.

LIS

Humberto Delgado

$754 Roundtrip, found 23 hours ago

$754

Roundtrip

found 23 hours ago

Select Iberia flight, departing Tue, Oct 7 from Logan Intl. to Humberto Delgado, returning Tue, Oct 14, priced at $754 found 23 hours ago

Tue, Oct 7 - Tue, Oct 14

BOS

Logan Intl.

LIS

Humberto Delgado

$781 Roundtrip, found 23 hours ago

$781

Roundtrip

found 23 hours ago

Select Finnair flight, departing Tue, Oct 7 from Logan Intl. to Humberto Delgado, returning Tue, Oct 14, priced at $781 found 23 hours ago

Sat, Aug 2 - Wed, Aug 13

BOS

Logan Intl.

LIS

Humberto Delgado

$932 Roundtrip, found 1 day ago

$932

Roundtrip

found 1 day ago

Select Aer Lingus flight, departing Sat, Aug 2 from Logan Intl. to Humberto Delgado, returning Wed, Aug 13, priced at $932 found 1 day ago

Sat, Aug 2 - Wed, Aug 13

BOS

Logan Intl.

LIS

Humberto Delgado

$1,822 Roundtrip, found 1 day ago

$1,822

Roundtrip

found 1 day ago

Select Brussels Airlines flight, departing Sat, Aug 2 from Logan Intl. to Humberto Delgado, returning Wed, Aug 13, priced at $1,822 found 1 day ago