HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portugal

$185+ Cheap flights from Boston (BOS) to Portugal

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Portugal with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Boston to Portugal

Keep the following information in mind while searching for Boston to Portugal flight deals. Data was last updated July 29, 2025.

Round-trip from

$462
(Air Canada)

One-way from

$185
(SmartFares)

Popular in

June

Cheapest in

February

Average price

$873

Good round-trip deal

$514 or less

Good one-way deal

$316 or less
From Boston Logan Intl to Portugal
Search Deals
One-way flight from Boston Logan Intl to Portugal
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($109 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to Portugal.
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to Portugal.
Search Deals

Find flight deals from Boston to Portugal

Cheapest flights from Boston to Portugal
Explore the most affordable flight options available from Boston to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This oojo deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/89:20 pmBOS - PIX
1 stop14h 55mMultiple Airlines
Sat 11/159:45 amPIX - BOS
1 stop14h 20mMultiple Airlines
Deal found 7/29$447
This Air Canada deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/236:40 pmBOS - OPO
2 stops36h 25mAir Canada
Tue 9/2312:50 pmOPO - BOS
1 stop30h 40mAir Canada
Deal found 7/29$462
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/265:05 pmBOS - OPO
1 stop13h 25mSWISS
Fri 9/268:40 amOPO - BOS
1 stop16h 15mSWISS
Deal found 7/29$463
This Iberia deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/141:00 pmBOS - OPO
2 stops21h 55mIberia
Wed 10/18:35 pmOPO - BOS
2 stops27h 14mIberia
Deal found 7/29$464
This Lufthansa deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/278:05 pmBOS - OPO
1 stop22h 15mLufthansa
Thu 9/116:15 amOPO - BOS
1 stop16h 25mLufthansa
Deal found 7/27$465
This Cheapflightsfares deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/510:55 pmBOS - FNC
1 stop16h 50mTAP AIR PORTUGAL
Sun 10/128:45 amFNC - BOS
1 stop16h 40mTAP AIR PORTUGAL
Deal found 7/27$467
This Gotogate deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/269:40 pmBOS - OPO
1 stop29h 15mMultiple Airlines
Tue 10/76:15 amOPO - BOS
2 stops20h 11mMultiple Airlines
Deal found 7/27$470
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/201:35 pmBOS - OPO
2 stops16h 05mDelta
Wed 9/1011:35 amOPO - BOS
2 stops18h 49mDelta
Deal found 7/28$472
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/246:10 pmBOS - OPO
1 stop21h 15mTAP AIR PORTUGAL
Mon 9/226:05 pmOPO - BOS
Nonstop7h 40mTAP AIR PORTUGAL
Deal found 7/27$476
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/275:50 pmBOS - OPO
1 stop12h 30mUnited Airlines
Tue 9/2312:50 pmOPO - BOS
1 stop10h 05mUnited Airlines
Deal found 7/29$480
This Ovago deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/259:25 pmBOS - OPO
1 stop14h 35mBritish Airways
Fri 10/318:40 pmOPO - BOS
1 stop28h 10mBritish Airways
Deal found 7/27$481
This Orbitz deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/244:30 pmBOS - FNC
1 stop14h 55mIberia
Thu 10/21:05 pmFNC - BOS
1 stop11h 45mIberia
Deal found 7/29$493

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Portugal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
Use the filters below to find and compare flights from Boston to Portugal that are best for you.

Fly from

Boston

Fly to

Portugal

Route

Depart

Return

Price

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sat 8/23

6:40 pm-12:05 pm

2 stops36h 25m

Porto

Tue 9/9

12:50 pm-2:30 pm

1 stop30h 40m

$462

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 8/26

5:05 pm-11:30 am

1 stop13h 25m

Porto

Fri 9/26

8:40 am-7:55 pm

1 stop16h 15m

$463

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 9/21

6:10 pm-5:00 pm

1 stop17h 50m

Porto

Sun 9/28

9:15 pm-2:20 pm

1 stop22h 05m

$464

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 8/27

8:05 pm-11:20 pm

1 stop22h 15m

Porto

Tue 9/9

6:15 am-5:40 pm

1 stop16h 25m

$465

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 8/26

11:00 pm-8:00 am

1 stop28h 00m

Porto

Mon 9/22

8:35 pm-10:50 pm

2 stops31h 15m

$467

BostonFunchal

BOS - FNC

BOSFNC

Boston Logan Intl

Sun 10/5

10:55 pm-8:45 pm

1 stop16h 50m

Funchal Madeira

Sun 10/12

8:45 am-8:25 pm

1 stop16h 40m

$467

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Fri 9/26

9:40 pm-7:55 am

1 stop29h 15m

Porto

Tue 10/7

6:15 am-9:26 pm

2 stops20h 11m

$470

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 8/20

1:35 pm-10:40 am

2 stops16h 05m

Porto

Wed 9/10

11:35 am-1:24 am

2 stops18h 49m

$472

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 8/27

5:50 pm-11:20 am

1 stop12h 30m

Porto

Tue 9/23

12:50 pm-5:55 pm

1 stop10h 05m

$480

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sat 10/25

9:25 pm-4:00 pm

1 stop14h 35m

Porto

Fri 10/31

8:40 pm-8:50 pm

1 stop28h 10m

$481

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Boston to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Boston with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Boston to Portugal

What is the cheapest month to book a flight from Boston to Portugal?

Currently, January is the cheapest month in which you can book a flight from Boston to Portugal (average of $612). Flying from Boston to Portugal in June is currently the most expensive (average of $1,129). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BOS to PT?

Find hourly flight availability from Boston to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 31% on flights from Boston to Portugal by exploring options for tickets in the morning.

What is the cheapest day to fly from Boston to Portugal?

Use this chart to determine the cheapest time to fly round-trip from Boston to Portugal. Price data was last updated on November 3, 2024.

Travelers seeking maximum savings on their Boston to Portugal flight should consider departing on Friday mornings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Boston to Portugal

Explore weekly flight availability from Boston to Portugal. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 29, 2025.

The most flights from BOS to PT0 are scheduled on a Monday (9 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (2 on average).

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portugal. Reviews last updated July 29, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and Azores Airlines from Boston to Portugal to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,977 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Azores Airlines
7.5
Good
67 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,683 reviews
Delta
8.0
Very good
7,977 reviews

Boarding

8.2

Overall

8.0

Entertainment

7.9

Comfort

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Boston to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boston to Portugal?

    Located just 2.6 mi from the city center, Boston Logan Intl (BOS) is the airport most travelers will use when flying to Portugal from Boston.

  • How popular is this Boston to Portugal flight route?

    This flight path from Boston Logan Intl to Portugal was viewed by 222 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines to fly from Boston to Portugal one-way?

    The cheapest airline one-way is Azores Airlines, with whom users have recently found tickets for as low as $185. However, be on the lookout for offers from TAP AIR PORTUGAL and LEVEL, as they are both options that can get you from Boston to Portugal for a low price.

  • What are the most popular routes from Boston to Portugal?

    While some choose either Boston Logan Intl - Ponta Delgada Nordela or Boston Logan Intl - Porto, Boston Logan Intl - Lisbon Humberto Delgado is the most popular route from Boston to Portugal.

  • What are the most reliable airlines from Boston to Portugal?

    No one likes to see their flight delayed. When booking a flight from Boston to Portugal consider choosing KLM (63%), Air France (63%) or Delta (63%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Boston to Portugal?

    Looking for the cheapest flight from Boston to Portugal? While on average our users pay $1,605, our data indicates the cheapest price to be $229. The most popular route (Boston Logan Intl - Lisbon Humberto Delgado), is priced around $391.

  • Can I find deals for flights from Boston to Portugal that include hotel bookings?

    Yes. In addition to deals on Boston to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Portugal.

  • Can I find deals for business class flights from Boston to Portugal?

    Yes. Cheapflights offers flight deals from Boston to Portugal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Boston to Portugal?

    Currently, January is the cheapest month in which you can book a flight from Boston to Portugal (average of $612). Flying from Boston to Portugal in June is currently the most expensive (average of $1,129). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Heathrow flights
Boston to Leonardo da Vinci/Fiumicino flights
Boston to Charles de Gaulle flights
Boston to Dublin flights
Boston to Lisbon flights
Boston to Gatwick flights
Boston to Amsterdam flights
Boston to Barcelona-El Prat flights
Boston to Athens flights
Boston to London City flights
Boston to Zurich flights
Boston to Orly flights
Boston to Keflavik Intl flights
Boston to Munich flights
Boston to Madrid flights
Boston to Istanbul flights
Boston to Frankfurt flights
Boston to Ponta Delgada flights
Boston to Stansted flights
Boston to Luton flights
Boston to Edinburgh flights
Boston to Malpensa flights
Boston to Linate flights
Boston to Vicenza flights
Boston to Beauvais-Tille flights
Boston to Shannon flights
Boston to Florence flights
Boston to Copenhagen flights
Boston to Naples flights
Boston to Berlin flights
Boston to Sabiha Gokcen flights
Hartford to Dublin flights
Boston to Bruxelles-National flights
Boston to Porto flights
Boston to Vienna flights
Boston to Tirana flights
Boston to Frederic Chopin flights
Boston to Prague flights
Boston to Oslo Gardermoen flights
Boston to Ciampino flights
Boston to Bergamo flights
Boston to Funchal flights
Boston to Málaga flights
Hartford to Heathrow flights
Boston to Glasgow Intl flights
Boston to Belgrade flights
Boston to Turin flights
Boston to Nice flights
Boston to Sofia flights
Boston to Arlanda flights

Top 10 airlines flying from Boston to Portugal

Discover the top 10 airlines that operate flights from Boston to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
VuelingCheapest$165Average$589FlexibilityNo cancel feeOn-time88%
LEVELCheapest$218Average$510FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$323Average$626FlexibilityNo cancel feeOn-time77%
IberiaCheapest$325Average$641FlexibilityNo cancel feeOn-time77%
PLAYCheapest$331Average$383FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$338Average$635FlexibilityNo cancel feeOn-time79%
IcelandairCheapest$386Average$616FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$425Average$696FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$443Average$779FlexibilityNo cancel feeOn-time69%
KLMCheapest$467Average$728FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.