Flights to Costa de Prata from Boston - ￥43,220

View ￥43,220 flight on Mon, Sep 29, 2025Opens in a new window

Popular airlines from Boston to Costa de Prata

  • American Airlines

    American Airlines

  • British Airways

    British Airways

  • Iberia

    Iberia

  • KLM

    KLM

  • Lufthansa

    Lufthansa

  • Swiss International Air Lines

    Swiss International Air Lines

  • United

    United

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Boston to Costa de Prata (BOS-OPO)

Prices were available within the past 7 days and start at ￥43,220 for one-way flights and ￥62,290 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Sep 22 - Wed, Oct 1
BOS
Boston
OPO
Porto
￥62,290 Roundtrip, found 3 days ago
￥62,290
Roundtrip
found 3 days ago
Select American Airlines flight, departing Mon, Sep 22 from Boston to Porto, returning Wed, Oct 1, priced at ￥62,290 found 3 days ago
United
Mon, Sep 22 - Wed, Oct 1
BOS
Boston
OPO
Porto
￥62,320 Roundtrip, found 3 days ago
￥62,320
Roundtrip
found 3 days ago
Select United flight, departing Mon, Sep 22 from Boston to Porto, returning Wed, Oct 1, priced at ￥62,320 found 3 days ago
Swiss International Air Lines
Mon, Sep 22 - Wed, Oct 1
BOS
Boston
OPO
Porto
￥63,528 Roundtrip, found 3 days ago
￥63,528
Roundtrip
found 3 days ago
Select Swiss International Air Lines flight, departing Mon, Sep 22 from Boston to Porto, returning Wed, Oct 1, priced at ￥63,528 found 3 days ago
Lufthansa
Mon, Sep 22 - Wed, Oct 1
BOS
Boston
OPO
Porto
￥67,820 Roundtrip, found 3 days ago
￥67,820
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Mon, Sep 22 from Boston to Porto, returning Wed, Oct 1, priced at ￥67,820 found 3 days ago
Delta
Wed, Aug 13 - Wed, Aug 20
BOS
Boston
OPO
Porto
￥95,140 Roundtrip, found 1 day ago
￥95,140
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Aug 13 from Boston to Porto, returning Wed, Aug 20, priced at ￥95,140 found 1 day ago
British Airways
Wed, Aug 13 - Sun, Aug 17
BOS
Boston
OPO
Porto
￥95,830 Roundtrip, found 1 day ago
￥95,830
Roundtrip
found 1 day ago
Select British Airways flight, departing Wed, Aug 13 from Boston to Porto, returning Sun, Aug 17, priced at ￥95,830 found 1 day ago

Find the cheapest month to fly from Boston (BOS) to Porto (OPO)

November is typically the cheapest month to fly

From ￥45,927 - ￥103,142 per traveler.

Graph displaying average flight prices per month

*Available to Expedia members.