Flights to Cascais Coast from Boston - ￥41,650

View ￥41,650 flight on Mon, Oct 20, 2025Opens in a new window

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Cheap Flights from Boston to Cascais Coast (BOS-LIS)

Prices were available within the past 7 days and start at ￥41,650 for one-way flights and ￥68,760 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Wed, Sep 24 - Thu, Oct 2
BOS
Boston
LIS
Lisbon
￥68,760 Roundtrip, found 5 days ago
￥68,760
Roundtrip
found 5 days ago
Select Icelandair flight, departing Wed, Sep 24 from Boston to Lisbon, returning Thu, Oct 2, priced at ￥68,760 found 5 days ago
United
Mon, Sep 22 - Wed, Oct 1
BOS
Boston
LIS
Lisbon
￥71,070 Roundtrip, found 6 days ago
￥71,070
Roundtrip
found 6 days ago
Select United flight, departing Mon, Sep 22 from Boston to Lisbon, returning Wed, Oct 1, priced at ￥71,070 found 6 days ago
American Airlines
Mon, Sep 22 - Wed, Oct 1
BOS
Boston
LIS
Lisbon
￥72,140 Roundtrip, found 6 days ago
￥72,140
Roundtrip
found 6 days ago
Select American Airlines flight, departing Mon, Sep 22 from Boston to Lisbon, returning Wed, Oct 1, priced at ￥72,140 found 6 days ago
Swiss International Air Lines
Mon, Sep 22 - Wed, Oct 1
BOS
Boston
LIS
Lisbon
￥73,510 Roundtrip, found 6 days ago
￥73,510
Roundtrip
found 6 days ago
Select Swiss International Air Lines flight, departing Mon, Sep 22 from Boston to Lisbon, returning Wed, Oct 1, priced at ￥73,510 found 6 days ago
TAP Portugal
Fri, Sep 26 - Mon, Sep 29
BOS
Boston
LIS
Lisbon
￥75,570 Roundtrip, found 5 days ago
￥75,570
Roundtrip
found 5 days ago
Select TAP Portugal flight, departing Fri, Sep 26 from Boston to Lisbon, returning Mon, Sep 29, priced at ￥75,570 found 5 days ago
Delta
Tue, Jul 29 - Thu, Aug 7
BOS
Boston
LIS
Lisbon
￥88,500 Roundtrip, found 2 days ago
￥88,500
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Jul 29 from Boston to Lisbon, returning Thu, Aug 7, priced at ￥88,500 found 2 days ago

Find the cheapest month to fly from Boston (BOS) to Lisbon (LIS)

November is typically the cheapest month to fly

From ￥49,650 - ￥105,867 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.