$561 Cheap United flights Boston (BOS) to Lisbon (LIS)

$561 Cheap United flights Boston (BOS) to Lisbon (LIS)

Prices were available within the past 7 days and start at $561 for one-way flights and $659 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 1 - Wed, Oct 22

BOS

Boston

LIS

Lisbon

$659 Roundtrip, found 2 days ago

$659

Roundtrip

found 2 days ago

Select United flight, departing Wed, Oct 1 from Boston to Lisbon, returning Wed, Oct 22, priced at $659 found 2 days ago

Tue, May 13 - Fri, May 23

BOS

Boston

LIS

Lisbon

$664 Roundtrip, found 4 days ago

$664

Roundtrip

found 4 days ago

Select United flight, departing Tue, May 13 from Boston to Lisbon, returning Fri, May 23, priced at $664 found 4 days ago

Wed, Oct 1 - Wed, Oct 22

BOS

Boston

LIS

Lisbon

$666 Roundtrip, found 2 days ago

$666

Roundtrip

found 2 days ago

Select United flight, departing Wed, Oct 1 from Boston to Lisbon, returning Wed, Oct 22, priced at $666 found 2 days ago