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Boston to Portugal flight

Flying From Boston to Portugal: What You Need to Know

Cheapest one-way flight price£163
Cheapest return ticket price£360
Off-season travel monthOctober
Peak season for travelJuly
Popular airlineTAP Air Portugal
Cheapest monthOctober

Compare multiple airlines at once to find the best flight deals from Boston to Portugal.

Airlines Flying From Boston to Portugal
TAP Air Portugal logo TAP Air Portugal

Search Flights From Boston to Portugal

Easily compare flights from Boston to Portugal and find the cheapest tickets available!

Looking for cheap flights from Boston to Portugal? Check out prices for the next 90 days, starting at just £163 for a one-way ticket and £360 for a round trip.

      • Cheapest nonstop
        Sat, Oct 24
        BOS
        OPO
        |
        Boston
        Porto
        Direct | TAP Air Portugal
        Sun, Nov 1
        OPO
        BOS
        |
        Porto
        Boston
        Direct | TAP Air Portugal
        £386 £559
        31% off
        31% off
        £559 £386
      • Sun, Nov 1
        BOS
        OPO
        |
        Boston
        Porto
        Direct | TAP Air Portugal
        Sun, Nov 8
        OPO
        BOS
        |
        Porto
        Boston
        Direct | TAP Air Portugal
        £405 £559
        28% off
        28% off
        £559 £405
      • Tue, Nov 10
        BOS
        OPO
        |
        Boston
        Porto
        Direct | TAP Air Portugal
        Tue, Nov 17
        OPO
        BOS
        |
        Porto
        Boston
        Direct | TAP Air Portugal
        £405 £559
        28% off
        28% off
        £559 £405
      • Tue, Dec 1
        BOS
        OPO
        |
        Boston
        Porto
        Direct | TAP Air Portugal
        Tue, Dec 8
        OPO
        BOS
        |
        Porto
        Boston
        Direct | TAP Air Portugal
        £405
        28% off
        £559 £405
      • Tue, Nov 17
        BOS
        OPO
        |
        Boston
        Porto
        Direct | TAP Air Portugal
        Tue, Nov 24
        OPO
        BOS
        |
        Porto
        Boston
        Direct | TAP Air Portugal
        £408
        27% off
        £559 £408
      • Sat, Nov 14
        BOS
        LIS
        |
        Boston
        Lisbon
        1 stop | Icelandair
        Sun, Nov 22
        LIS
        BOS
        |
        Lisbon
        Boston
        1 stop | Icelandair
        £360
        36% off
        £559 £360
      • Wed, Nov 18
        BOS
        LIS
        |
        Boston
        Lisbon
        1 stop | Icelandair
        Tue, Nov 24
        LIS
        BOS
        |
        Lisbon
        Boston
        1 stop | Icelandair
        £361
        35% off
        £559 £361
      • Mon, Nov 16
        BOS
        LIS
        |
        Boston
        Lisbon
        1 stop | Scandinavian Airlines
        Mon, Nov 23
        LIS
        BOS
        |
        Lisbon
        Boston
        1 stop | Scandinavian Airlines
        £365
        35% off
        £559 £365
      • Tue, Nov 3
        BOS
        OPO
        |
        Boston
        Porto
        1 stop | American Airlines
        Tue, Nov 10
        OPO
        BOS
        |
        Porto
        Boston
        1 stop | American Airlines
        £375
        33% off
        £559 £375
      • Wed, Nov 4
        BOS
        OPO
        |
        Boston
        Porto
        1 stop | Delta Air Lines
        Thu, Nov 12
        OPO
        BOS
        |
        Porto
        Boston
        1 stop | KLM
        £404
        28% off
        £559 £404
      • Fri, Oct 9
        BOS
        LIS
        |
        Boston
        Lisbon
        1 stop | Normal Airline
        Sun, Oct 11
        LIS
        BOS
        |
        Lisbon
        Boston
        Direct | Normal Airline
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      • Cheapest nonstop
        Tue, Nov 3
        BOS
        LIS
        |
        Boston
        Lisbon
        Direct | TAP Air Portugal
        £245 £533
        54% off
        54% off
        £533 £245
      • Fri, Dec 4
        BOS
        LIS
        |
        Boston
        Lisbon
        Direct | TAP Air Portugal
        £248 £533
        53% off
        53% off
        £533 £248
      • Wed, Oct 21
        BOS
        OPO
        |
        Boston
        Porto
        1 stop | Level
        £163 £533
        69% off
        69% off
        £533 £163
      • Mon, Nov 16
        BOS
        PDL
        |
        Boston
        Ponta Delgada
        1 stop | TAP Air Portugal
        £194
        64% off
        £533 £194
      • Mon, Oct 19
        BOS
        PDL
        |
        Boston
        Ponta Delgada
        1 stop | TAP Air Portugal
        £196
        63% off
        £533 £196
      • Sun, Nov 29
        BOS
        PDL
        |
        Boston
        Ponta Delgada
        1 stop | TAP Air Portugal
        £196
        63% off
        £533 £196
      • Wed, Nov 18
        BOS
        PDL
        |
        Boston
        Ponta Delgada
        1 stop | TAP Air Portugal
        £196
        63% off
        £533 £196
      • Mon, Nov 2
        BOS
        PDL
        |
        Boston
        Ponta Delgada
        1 stop | TAP Air Portugal
        £196
        63% off
        £533 £196
      • Sun, Oct 25
        BOS
        PDL
        |
        Boston
        Ponta Delgada
        1 stop | TAP Air Portugal
        £197
        63% off
        £533 £197
      • Tue, Oct 27
        BOS
        PDL
        |
        Boston
        Ponta Delgada
        1 stop | TAP Air Portugal
        £224
        57% off
        £533 £224
      • Mon, Oct 12
        BOS
        PDL
        |
        Boston
        Ponta Delgada
        1 stop | TAP Air Portugal
        £329
        38% off
        £533 £329
      • Wed, Oct 14
        BOS
        PDL
        |
        Boston
        Ponta Delgada
        1 stop | TAP Air Portugal
        £389
        27% off
        £533 £389
      • Fri, Oct 9
        BOS
        LIS
        |
        Boston
        Lisbon
        1 stop | Normal Airline
        Find more flights
        Find more flights

Displayed flight fares from Boston to Portugal are based on average prices across airlines over the next 3 months, according to the latest Trip.com data.

FAQs: Flights From Boston to Portugal

  • What is the cheapest Boston to Portugal flight route?

    The cheapest return flight from Boston to Portugal is on the route from Boston to Lisbon, with prices starting at £379 for a return trip between 2026-10-26 and 2026-11-01.
  • According to our flights calendar over the next 90 days, it seems the cheapest date is on 2026-10-18 for one-way flights.
  • Based on our flight data, the average flight time from Boston to Portugal is approximately 6 hours 28 minutes based on our most popular routes from Boston to Lisbon. The time may also vary depending on your destination.
  • The cheapest airline flying to Portugal from Boston is Level serving route from Boston to Lisbon.
  • There are direct flights from Boston to Portugal. Lisbon, Porto, Ponta Delgada, and Terceira Island are all popular destinations in Portugal.

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