$589 Cheap United flights Boston (BOS) to Lisbon (LIS)

$589 Cheap United flights Boston (BOS) to Lisbon (LIS)

Prices were available within the past 7 days and start at $589 for one-way flights and $480 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Sep 23 - Tue, Sep 30

BOS

Boston

LIS

Lisbon

$480 Roundtrip, found 5 hours ago

$480

Roundtrip

found 5 hours ago

Select United flight, departing Tue, Sep 23 from Boston to Lisbon, returning Tue, Sep 30, priced at $480 found 5 hours ago

Tue, Sep 23 - Mon, Sep 29

BOS

Boston

LIS

Lisbon

$483 Roundtrip, found 5 hours ago

$483

Roundtrip

found 5 hours ago

Select United flight, departing Tue, Sep 23 from Boston to Lisbon, returning Mon, Sep 29, priced at $483 found 5 hours ago

Mon, Sep 22 - Tue, Sep 30

BOS

Boston

LIS

Lisbon

$485 Roundtrip, found 5 hours ago

$485

Roundtrip

found 5 hours ago

Select United flight, departing Mon, Sep 22 from Boston to Lisbon, returning Tue, Sep 30, priced at $485 found 5 hours ago

Sat, Sep 27 - Sat, Oct 4

BOS

Boston

LIS

Lisbon

$487 Roundtrip, found 5 hours ago

$487

Roundtrip

found 5 hours ago

Select United flight, departing Sat, Sep 27 from Boston to Lisbon, returning Sat, Oct 4, priced at $487 found 5 hours ago

Mon, Sep 22 - Mon, Sep 29

BOS

Boston

LIS

Lisbon

$488 Roundtrip, found 5 hours ago

$488

Roundtrip

found 5 hours ago

Select United flight, departing Mon, Sep 22 from Boston to Lisbon, returning Mon, Sep 29, priced at $488 found 5 hours ago

Sat, Sep 27 - Sun, Oct 12

BOS

Boston

LIS

Lisbon

$490 Roundtrip, found 2 days ago

$490

Roundtrip

found 2 days ago

Select United flight, departing Sat, Sep 27 from Boston to Lisbon, returning Sun, Oct 12, priced at $490 found 2 days ago

Sat, Feb 28 - Tue, Mar 31

BOS

Boston

LIS

Lisbon

$520 Roundtrip, found 2 days ago

$520

Roundtrip

found 2 days ago

Select United flight, departing Sat, Feb 28 from Boston to Lisbon, returning Tue, Mar 31, priced at $520 found 2 days ago

Sat, Feb 28 - Tue, Mar 31

BOS

Boston

LIS

Lisbon

$527 Roundtrip, found 2 days ago

$527

Roundtrip

found 2 days ago

Select United flight, departing Sat, Feb 28 from Boston to Lisbon, returning Tue, Mar 31, priced at $527 found 2 days ago

Sat, Feb 28 - Tue, Mar 31

BOS

Boston

LIS

Lisbon

$530 Roundtrip, found 2 days ago

$530

Roundtrip

found 2 days ago

Select United flight, departing Sat, Feb 28 from Boston to Lisbon, returning Tue, Mar 31, priced at $530 found 2 days ago

Sat, Feb 28 - Tue, Mar 31

BOS

Boston

LIS

Lisbon

$533 Roundtrip, found 2 days ago

$533

Roundtrip

found 2 days ago

Select United flight, departing Sat, Feb 28 from Boston to Lisbon, returning Tue, Mar 31, priced at $533 found 2 days ago

Sat, Feb 28 - Tue, Mar 31

BOS

Boston

LIS

Lisbon

$535 Roundtrip, found 2 days ago

$535

Roundtrip

found 2 days ago

Select United flight, departing Sat, Feb 28 from Boston to Lisbon, returning Tue, Mar 31, priced at $535 found 2 days ago