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$196+ Cheap flights from Boston (BOS) to Porto (OPO)

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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — OPO
feb. 20 — feb. 271
vie. 2/20
vie. 2/27
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Porto are usually found in February or November, booked 18 days in advance, depart on a Tuesday or Friday and return on a Monday

Cheap flight deals from Boston to Porto

Cheapest flights from Boston to Porto
Explore the most affordable flight options available from Boston to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/20. 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.
dom. 2/810:10 pm
BOS
-
OPO
1 stop32h 05m
SWISS
mié. 2/257:20 pm
OPO
-
BOS
1 stop29h 40m
SWISS
Deal found 1/20$346
This oojo deal was found by Cheapflights users on 1/20. 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.
lun. 3/3010:30 pm
BOS
-
OPO
Nonstop6h 40m
TAP AIR PORTUGAL
lun. 4/69:15 pm
OPO
-
BOS
1 stop22h 25m
TAP AIR PORTUGAL
Deal found 1/20$347
This Kiwi.com deal was found by Cheapflights users on 1/20. 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.
dom. 2/2210:10 pm
BOS
-
OPO
1 stop32h 05m
SWISS
lun. 3/27:20 pm
OPO
-
BOS
1 stop30h 00m
SWISS
Deal found 1/20$348
This oojo deal was found by Cheapflights users on 1/18. 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.
sáb. 1/3110:25 pm
BOS
-
OPO
1 stop10h 35m
TAP AIR PORTUGAL
sáb. 2/286:00 pm
OPO
-
BOS
1 stop25h 35m
TAP AIR PORTUGAL
Deal found 1/18$351
This Mytrip deal was found by Cheapflights users on 1/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/299:35 am
BOS
-
OPO
2 stops16h 15m
Multiple Airlines
mié. 11/117:20 pm
OPO
-
BOS
2 stops43h 17m
Multiple Airlines
Deal found 1/20$354
This Kiwi.com deal was found by Cheapflights users on 1/19. 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.
lun. 2/238:40 pm
BOS
-
OPO
1 stop11h 10m
Multiple Airlines
mié. 3/412:10 pm
OPO
-
BOS
1 stop13h 10m
Multiple Airlines
Deal found 1/19$359
This oojo deal was found by Cheapflights users on 1/19. 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.
mar. 3/247:05 pm
BOS
-
OPO
1 stop14h 05m
TAP AIR PORTUGAL
mar. 4/79:00 am
OPO
-
BOS
1 stop16h 05m
TAP AIR PORTUGAL
Deal found 1/19$362
This Kiwi.com deal was found by Cheapflights users on 1/19. 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.
dom. 2/18:40 pm
BOS
-
OPO
1 stop11h 10m
Lufthansa
lun. 2/91:45 pm
OPO
-
BOS
1 stop33h 50m
Lufthansa
Deal found 1/19$364
This Mytrip deal was found by Cheapflights users on 1/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/123:35 pm
BOS
-
OPO
1 stop10h 15m
Multiple Airlines
mié. 11/117:20 pm
OPO
-
BOS
2 stops48h 17m
Multiple Airlines
Deal found 1/20$365
This Kiwi.com deal was found by Cheapflights users on 1/18. 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.
mar. 2/179:50 pm
BOS
-
OPO
1 stop32h 25m
SWISS
mar. 2/247:25 pm
OPO
-
BOS
1 stop29h 55m
SWISS
Deal found 1/18$366

Find flight deals from Boston to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 21, 2026.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$346
(Kiwi.com)

One-way from

$196
(SWISS)

Popular in

June

Cheapest in

February

Average price

$526

Good round-trip deal

$511 or less

Good one-way deal

$279 or less
Provider with most accurate pricing for Boston Logan Intl-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Porto flights.
Search Deals
From Boston Logan Intl to Porto
Search Deals
One-way flight from Boston Logan Intl to Porto
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($146 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 January 2026
Search Deals
Price to beat on a round-trip flight from Boston Logan Intl to Porto.
Search Deals
Price to beat on a one-way flight from Boston Logan Intl to Porto.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Porto 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 enero 21, 2026.
Use the filters below to find and compare flights from Boston to Porto that are best for you.

Fly from

Boston

Fly to

Porto

Route

Depart

Return

Price

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

dom. 3/22

7:57 pm-9:30 am

1 stop9h 33m

Porto

mar. 3/31

6:00 am-3:40 pm

1 stop14h 40m

$382

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mar. 4/28

5:05 pm-7:55 am

1 stop33h 50m

Porto

jue. 5/7

7:20 pm-7:55 pm

1 stop29h 35m

$387

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mar. 2/10

5:25 pm-3:25 pm

2 stops17h 00m

Porto

mar. 2/17

5:00 am-7:58 pm

2 stops19h 58m

$423

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mar. 3/24

1:55 pm-10:30 am

2 stops16h 35m

Porto

mar. 4/7

6:15 am-2:55 pm

1 stop13h 40m

$437

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

dom. 3/1

8:30 pm-10:30 am

1 stop33h 00m

Porto

sáb. 3/14

9:25 am-2:20 pm

1 stop32h 55m

$447

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

sáb. 4/25

6:00 am-9:45 am

2 stops22h 45m

Porto

mar. 5/5

12:00 pm-12:46 pm

2 stops29h 46m

$447

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

vie. 4/24

6:00 am-9:50 am

2 stops22h 50m

Porto

jue. 4/30

8:20 am-4:10 pm

1 stop12h 50m

$465

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

vie. 2/6

1:30 pm-11:40 am

2 stops17h 10m

Porto

mar. 2/10

6:00 am-1:35 pm

1 stop12h 35m

$478

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mié. 5/6

8:25 pm-6:10 pm

1 stop16h 45m

Porto

lun. 5/11

7:00 pm-1:16 pm

1 stop23h 16m

$491

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

dom. 4/19

9:40 pm-6:30 pm

1 stop15h 50m

$216

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 20 results
1
2

Compare providers for flights from Boston to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Porto in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapfaremartPrice Accuracy-Trust Score*1 star
GotogatePrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Porto flights, users find the pricing of Gotogate to be most consistent on Cheapflights vs. Gotogate Users can find the same prices on Boston-Porto flight deals on Cheapflights vs. Gotogate >95% of the time. Price accuracy is based on data collected from Boston-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Porto flights, Cheapflights users trust Gotogate the most. Gotogate has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto 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 Porto

How far ahead should I book a flight from Boston to Porto?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Porto. Price data was last updated on January 16, 2026.

To ensure you get the cheapest price possible for a flight from Boston to Porto, you should look to book at least 18 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, April is the cheapest month in which you can book a flight from Boston to Porto (average of $360). Flying from Boston to Porto in June is currently the most expensive (average of $562). 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.

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated enero 21, 2026.
Read through reviews of airlines operating flights from Boston to Porto, such as Delta, Azores Airlines, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,088 reviews

Entertainment

7.8

Food

7.2

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

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
8,088 reviews
Delta
7.9
Good
8,088 reviews

Entertainment

7.8

Food

7.2

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

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
8,088 reviews

Entertainment

7.8

Food

7.2

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

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
9,191 reviews
Delta
7.9
Good
8,088 reviews

Entertainment

7.8

Food

7.2

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

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
2,124 reviews
Delta
7.9
Good
8,088 reviews

Entertainment

7.8

Food

7.2

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

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.
Iberia
7.0
Good
3,094 reviews
Delta
7.9
Good
8,088 reviews

Entertainment

7.8

Food

7.2

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

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 Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Boston to Porto flight route?

    Flights from Boston Logan Intl to Porto have been viewed 26 times in the past calendar month.

  • How long is the flight from Boston to Porto?

    United Airlines, SWISS, and Delta can get you from Boston to Porto in just under 9h 33m. Your travel time can differ by up to 24h 17m. The distance from Boston to Porto is about 3134 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Boston to Porto round-trip?

    According to our current data, SWISS ($338), Iberia ($373), and British Airways ($374) offers the cheapest pricing from Boston to Porto. These flights start at 46% lower than the current average price 3 months from now.

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

    One-way options have recently been found by users for as low as $158 on United Airlines. Other airlines that offer cheap prices include Delta from $236 and TAP AIR PORTUGAL from $241 one-way.

  • What are the cheapest flights from Boston to Porto?

    Looking at all options, your cheapest flight can be booked for $255. While the most popular route (Boston Logan Intl - Porto) can be booked for $341 on average, our data indicates $557 when flying from Boston to Porto.

  • Where are the most common layover locations when flying from Boston to Porto?

    Flights departing from Boston and landing in Porto layover in Lisbon most frequently. Madrid is the second most popular location for layovers on flights from Boston to Porto.

  • What are some popular things to do or see while on a layover in Lisbon?

    The majority of Lisbon visitors spend their time at Chiado, Praça do Marquês de Pombal, and Londres. Travelers on a layover in Lisbon can visit Chiado, Praça do Marquês de Pombal, and Londres, by traveling 4.5 mi, 3.6 mi, and 2.3 mi, respectively after landing at Lisbon Humberto Delgado. Travelers in need of a car in Lisbon can rent one for about $18 per day.

  • What are some popular points of interest to see during a layover in Madrid?

    Puerta del Sol, Plaza Mayor, and Spain Building are the most popular attractions in Madrid if you're in need of something to do during your layover. Puerta del Sol, Plaza Mayor, and Spain Building can be accessed by traveling approximately 8.4 mi, 8.6 mi, and 8.5 mi, respectively from Madrid Barajas. Those looking to explore during their layover in Madrid can rent a car from Madrid Barajas for about $25 per day.

  • Where are the least popular layover locations for Boston to Porto flights?

    Flights departing from Boston and landing in Porto layover in Paris least frequently. Ponta Delgada follows Paris in terms of the least common layover location on Boston to Porto flights.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston to Porto 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 Porto?

    Currently, April is the cheapest month in which you can book a flight from Boston to Porto (average of $360). Flying from Boston to Porto in June is currently the most expensive (average of $562). 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

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Aveiro
Arcos de Valdevez
Coimbra

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Top 10 airlines flying from Boston to Porto

Discover the top 10 airlines that operate flights from Boston to Porto. 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 enero 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$338Average$609FlexibilityNo cancel feeOn-time79%
IberiaCheapest$373Average$562FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$374Average$644FlexibilityNo cancel feeOn-time70%
KLMCheapest$394Average$602FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$398Average$687FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$398Average$751FlexibilityNo cancel feeOn-time71%
DeltaCheapest$414Average$788FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$425Average$760FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$434Average$670FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$449Average$653FlexibilityNo cancel feeOn-time76%

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