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$217+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
1 adult, Economy
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Cheap 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 February 13, 2026.

This oojo deal was found by Cheapflights users on 2/10. 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.
Wed 4/811:00 pm
BOS
-
FAO
1 stop32h 50m
Icelandair
Mon 4/201:50 pm
FAO
-
BOS
1 stop12h 55m
Icelandair
Deal found 2/10$363
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Mon 2/237:19 pm
BOS
-
OPO
2 stops33h 11m
United Airlines
Thu 3/1212:35 pm
OPO
-
BOS
2 stops15h 22m
United Airlines
Deal found 2/10$367
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
Wed 2/189:50 pm
BOS
-
OPO
1 stop32h 20m
SWISS
Tue 2/247:25 pm
OPO
-
BOS
1 stop29h 55m
SWISS
Deal found 2/9$369
This Booking.com deal was found by Cheapflights users on 2/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/199:35 am
BOS
-
OPO
2 stops16h 25m
Multiple Airlines
Mon 11/97:20 pm
OPO
-
BOS
1 stop30h 00m
Multiple Airlines
Deal found 2/12$370
This United Airlines deal was found by Cheapflights users on 2/13. 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.
Mon 2/236:27 pm
BOS
-
OPO
1 stop10h 03m
United Airlines
Thu 3/512:35 pm
OPO
-
BOS
1 stop11h 06m
United Airlines
Deal found 2/13$376
This Gotogate deal was found by Cheapflights users on 2/12. 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.
Wed 8/55:45 am
BOS
-
OPO
1 stop20h 15m
Multiple Airlines
Wed 11/117:20 pm
OPO
-
BOS
1 stop30h 00m
Multiple Airlines
Deal found 2/12$377
This Expedia deal was found by Cheapflights users on 2/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/34:45 pm
BOS
-
OPO
1 stop9h 55m
Iberia
Tue 3/1712:25 pm
OPO
-
BOS
1 stop12h 25m
Iberia
Deal found 2/11$379
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Mon 3/236:30 pm
BOS
-
OPO
1 stop11h 00m
United Airlines
Wed 4/156:00 am
OPO
-
BOS
1 stop14h 40m
United Airlines
Deal found 2/9$380
This Kiwi.com deal was found by Cheapflights users on 2/10. 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.
Wed 3/48:40 pm
BOS
-
OPO
1 stop11h 35m
Lufthansa
Mon 3/164:15 pm
OPO
-
BOS
1 stop25h 55m
Lufthansa
Deal found 2/10$382
This oojo deal was found by Cheapflights users on 2/13. 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.
Mon 3/3010:45 pm
BOS
-
OPO
1 stop19h 10m
TAP AIR PORTUGAL
Sun 4/56:00 am
OPO
-
BOS
1 stop19h 45m
TAP AIR PORTUGAL
Deal found 2/13$384
This Kiwi.com deal was found by Cheapflights users on 2/10. 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.
Mon 3/210:10 pm
BOS
-
FAO
1 stop15h 00m
SWISS
Tue 3/107:00 pm
FAO
-
BOS
1 stop30h 20m
SWISS
Deal found 2/10$387
This oojo deal was found by Cheapflights users on 2/11. 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.
Tue 11/179:50 pm
BOS
-
FAO
1 stop11h 00m
SWISS
Wed 12/22:40 pm
FAO
-
BOS
1 stop34h 40m
SWISS
Deal found 2/11$407

Find flight deals from Boston to Portugal

Keep the following information in mind while searching for Boston to Portugal flight deals. Data was last updated February 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$363
(oojo)

One-way from

$217
(oojo)

Popular in

June

Cheapest in

November

Average price

$640

Good round-trip deal

$562 or less

Good one-way deal

$266 or less
Provider with most accurate pricing for Boston Logan Intl-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Lisbon Humberto Delgado flights.
Search Deals
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. 13% potential increase in price ($116 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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

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 February 13, 2026.
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

Mon 2/23

6:27 pm-9:30 am

1 stop10h 03m

Porto

Thu 3/5

12:35 pm-6:41 pm

1 stop11h 06m

$376

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 3/8

7:57 pm-9:30 am

1 stop9h 33m

Porto

Wed 3/18

12:35 pm-9:41 pm

1 stop13h 06m

$376

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 3/23

6:30 pm-9:30 am

1 stop11h 00m

Porto

Thu 4/16

6:00 am-3:40 pm

1 stop14h 40m

$380

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 3/23

9:30 am-9:30 am

2 stops20h 00m

Porto

Wed 4/15

12:35 pm-10:04 am

2 stops26h 29m

$381

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 2/24

12:35 pm-9:30 am

2 stops15h 55m

Porto

Fri 3/6

12:45 pm-8:15 pm

1 stop12h 30m

$381

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 2/24

9:40 am-9:30 am

2 stops18h 50m

Porto

Thu 3/5

12:35 pm-6:41 pm

1 stop11h 06m

$381

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 2/25

2:20 pm-9:30 am

2 stops14h 10m

Porto

Thu 3/5

12:35 pm-11:57 pm

2 stops16h 22m

$381

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 3/23

1:00 pm-10:30 am

2 stops17h 30m

Porto

Thu 4/16

5:00 am-4:25 pm

1 stop16h 25m

$396

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 7/21

6:00 am-7:00 am

2 stops20h 00m

Porto

Tue 10/20

12:15 pm-5:56 pm

2 stops34h 41m

$410

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 8/11

3:00 pm-10:30 am

1 stop14h 30m

Porto

Thu 9/10

12:25 pm-10:27 pm

1 stop15h 02m

$426

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/12

Showing 1-10 of 60 results
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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, July is the cheapest month in which you can book a flight from Boston to Portugal (average of $323). Flying from Boston to Portugal in September is currently the most expensive (average of $429). 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 February 13, 2026.

When flying from Boston to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 February 13, 2026.

The most flights from BOS to PT0 are scheduled on a Thursday (5 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

How often are flights from Boston to Portugal delayed?

About 24% of weekly flights between Boston and Portugal have experienced delays in the past year, with the average delay time being 131 minutes.

What is the most punctual flight time for Boston to Portugal flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Boston to Portugal flights?

Over the last year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 17% of flights being delayed.

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 February 13, 2026.
Peruse reviews from past customers who have flown with Delta, Azores Airlines, and Air France 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
7.9
Good
8,198 reviews

Crew

8.5

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,198 reviews
Delta
7.9
Good
8,198 reviews

Crew

8.5

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Azores Airlines
7.4
Good
90 reviews
Delta
7.9
Good
8,198 reviews

Crew

8.5

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air France
7.4
Good
1,534 reviews
Delta
7.9
Good
8,198 reviews

Crew

8.5

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,287 reviews
Delta
7.9
Good
8,198 reviews

Crew

8.5

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
TAP AIR PORTUGAL
7.1
Good
2,142 reviews
Delta
7.9
Good
8,198 reviews

Crew

8.5

Entertainment

7.8

Comfort

7.9

Boarding

8.1

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 200 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Boston to Portugal?

    There are many flights that can get you from Boston to Portugal in 10h 03m. Fly via United Airlines, KLM, or Scandinavian Airlines to get the fastest option. Boston and Portugal are separated by a distance of 3134 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $158. However, be on the lookout for offers from LEVEL and Lufthansa, 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 (78%), Air France (78%) or Delta (78%) 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 $1,722, our data indicates the cheapest price to be $266. The most popular route (Boston Logan Intl - Lisbon Humberto Delgado), is priced around $402.

  • 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, July is the cheapest month in which you can book a flight from Boston to Portugal (average of $323). Flying from Boston to Portugal in September is currently the most expensive (average of $429). 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

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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 February 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
VuelingCheapest$78Average$572FlexibilityNo cancel feeOn-time88%
LEVELCheapest$226Average$509FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$260Average$550FlexibilityNo cancel feeOn-time77%
SWISSCheapest$338Average$628FlexibilityNo cancel feeOn-time79%
PLAYCheapest$344Average$389FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$370Average$542FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$374Average$670FlexibilityNo cancel feeOn-time70%
Scandinavian AirlinesCheapest$385Average$515FlexibilityNo cancel feeOn-time77%
KLMCheapest$394Average$709FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$395Average$668FlexibilityNo cancel feeOn-time71%

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