How often are flights from Boston to Porto delayed?

About 3% of weekly flights between Boston and Porto have experienced delays in the past year, with the average delay time being 125 minutes.

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

Over the last year, TAP AIR PORTUGAL have had the lowest number of delays on this route, with just 3% of flights being delayed.

What’s the top layover airport for flights from Boston to Porto?

Zurich (ZRH) – chosen by Cheapflights users on 33% of 1-stop itineraries from Boston to Porto on Cheapflights.

What’s the fastest layover option from Boston to Porto?

Flights via Madrid (MAD) have the shortest average one-way travel time for 1-stop routes: 10h 05m.

Which airport typically offers the quickest layover for flights from Boston to Porto?

Flights via Frankfurt am Main (FRA) offer the fastest connection on this route, with an average layover time of 2h 03m.

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

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

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

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

What’s the cheapest layover airport for flights from Boston to Porto?

Zurich (ZRH) is the most affordable 1-stop option, with an average round-trip price of $439.

How popular is this Boston to Porto flight route?

Flights from Boston Logan Intl to Porto have been viewed 22 times in the past calendar month.

How long is the flight from Boston to Porto?

KLM, Delta, and TAP AIR PORTUGAL can get you from Boston to Porto in just under 11h. Your travel time can differ by up to 22h 10m. 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 47% 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 Azores Airlines from $228 and Delta from $236 one-way.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

What are the cheapest flights from Boston to Porto?

Looking at all options, your cheapest flight can be booked for $258. While the most popular route (Boston Logan Intl - Porto) can be booked for $349 on average, our data indicates $531 when flying from Boston to Porto.

What are the most popular airlines that fly from Boston to Porto?

When booking a flight from Boston to Porto, you may want to consider flying on TAP AIR PORTUGAL, Iberia or United Airlines as they are the most popular for this route.

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.

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.

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 $15 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 $30 per day.

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.

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.

$256+ Flights from Boston to Porto

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Cheapflights Tip: The best prices from Boston Logan Intl to Porto are usually found in November or February, 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 December 18, 2025.

Sun 12/2810:10 pmBOS - OPO

1 stop15h 20mMultiple Airlines

Wed 12/316:00 amOPO - BOS

1 stop12h 25mMultiple Airlines

Deal found 12/17

$978

Mon 12/294:20 pmBOS - OPO

1 stop14h 20mLufthansa

Wed 12/316:00 amOPO - BOS

1 stop12h 25mLufthansa

Deal found 12/17

$1,003

Sun 12/2810:10 pmBOS - OPO

1 stop15h 20mMultiple Airlines

Tue 12/306:25 amOPO - BOS

2 stops18h 30mMultiple Airlines

Deal found 12/17

$1,053

Thu 12/252:15 pmBOS - OPO

2 stops16h 50mMultiple Airlines

Mon 12/296:15 amOPO - BOS

1 stop17h 20mMultiple Airlines

Deal found 12/16

$1,114

Wed 12/246:15 amBOS - OPO

2 stops31h 20mMultiple Airlines

Wed 12/316:00 amOPO - BOS

1 stop12h 25mMultiple Airlines

Deal found 12/17

$1,218

Wed 12/248:50 pmBOS - OPO

1 stop20h 35mKLM

Wed 12/3111:15 amOPO - BOS

1 stop12h 40mKLM

Deal found 12/16

$1,219

Sun 12/288:40 pmBOS - OPO

1 stop11h 10mMultiple Airlines

Mon 12/296:25 pmOPO - BOS

2 stops30h 30mMultiple Airlines

Deal found 12/17

$1,225

Thu 12/258:40 pmBOS - OPO

1 stop22h 00mLufthansa

Mon 12/296:15 amOPO - BOS

1 stop17h 20mLufthansa

Deal found 12/16

$1,259

Tue 12/305:20 pmBOS - OPO

1 stop11h 10mMultiple Airlines

Wed 12/317:20 pmOPO - BOS

1 stop29h 35mMultiple Airlines

Deal found 12/17

$1,358

Best flights from Boston to Porto
Discover carefully curated flight deals from Boston to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Wed 3/117:30 pmBOS - OPO

1 stop11h 00mKLM

Wed 3/184:10 pmOPO - BOS

1 stop26h 10mKLM

Deal found 12/17

$395

Tue 1/138:20 pmBOS - OPO

1 stop33h 10mDelta

Thu 1/295:00 amOPO - BOS

1 stop13h 30mDelta

Deal found 12/16

$397

Tue 1/206:05 pmBOS - OPO

1 stop15h 55mTAP AIR PORTUGAL

Sun 2/18:00 pmOPO - BOS

1 stop23h 35mTAP AIR PORTUGAL

Deal found 12/17

$399

Wed 3/119:40 pmBOS - OPO

1 stop11h 35mMultiple Airlines

Tue 3/2412:05 pmOPO - BOS

1 stop13h 15mMultiple Airlines

Deal found 12/15

$407

Mon 2/24:45 pmBOS - OPO

1 stop9h 55mAmerican Airlines

Tue 4/288:20 amOPO - BOS

2 stops17h 45mAmerican Airlines

Deal found 12/17

$413

Tue 3/172:15 pmBOS - OPO

2 stops15h 15mUnited Airlines

Mon 3/2312:30 pmOPO - BOS

1 stop29h 40mUnited Airlines

Deal found 12/16

$413

Sun 2/18:40 pmBOS - OPO

1 stop11h 10mLufthansa

Tue 4/286:20 amOPO - BOS

1 stop16h 20mLufthansa

Deal found 12/17

$418

Tue 2/38:35 pmBOS - OPO

1 stop32h 55mAir France

Tue 4/286:15 amOPO - BOS

1 stop18h 20mAir France

Deal found 12/17

$421

Sun 2/110:05 amBOS - OPO

2 stops19h 25mDelta

Tue 2/1011:25 amOPO - BOS

2 stops15h 56mDelta

Deal found 12/16

$409

Mon 2/24:45 pmBOS - OPO

1 stop9h 55mMultiple Airlines

Tue 4/288:40 pmOPO - BOS

1 stop24h 30mMultiple Airlines

Deal found 12/17

$411

Wed 3/115:25 pmBOS - OPO

1 stop18h 00mUnited Airlines

Thu 3/1912:35 pmOPO - BOS

2 stops15h 22mUnited Airlines

Deal found 12/16

$421

Tue 2/104:15 pmBOS - OPO

1 stop17h 30mMultiple Airlines

Tue 2/247:25 pmOPO - BOS

2 stops32h 12mMultiple Airlines

Deal found 12/17

$417

Last-minute flights from Boston to Porto
Discover last-minute flight deals from Boston to Porto. Data last updated December 18, 2025 and is based on user searches.

Mon 1/123:35 pmBOS - OPO

2 stops15h 10mIberia

Wed 1/2112:25 pmOPO - BOS

2 stops15h 31mIberia

Deal found 12/17

$391

Tue 1/1310:10 pmBOS - OPO

1 stop32h 05mSWISS

Thu 1/2912:05 pmOPO - BOS

1 stop13h 15mSWISS

Deal found 12/16

$384

Tue 1/138:20 pmBOS - OPO

1 stop33h 10mDelta

Thu 1/295:00 amOPO - BOS

1 stop13h 30mDelta

Deal found 12/16

$397

Tue 1/1311:00 amBOS - OPO

2 stops18h 30mDelta

Wed 1/285:00 amOPO - BOS

1 stop18h 55mDelta

Deal found 12/16

$400

Tue 1/133:35 pmBOS - OPO

2 stops15h 10mIberia

Mon 1/198:40 pmOPO - BOS

2 stops49h 23mIberia

Deal found 12/17

$406

Tue 1/136:30 pmBOS - OPO

1 stop11h 00mDelta

Mon 1/2611:25 amOPO - BOS

1 stop31h 15mDelta

Deal found 12/16

$407

Wed 1/145:30 amBOS - OPO

2 stops24h 45mMultiple Airlines

Tue 1/2712:05 pmOPO - BOS

1 stop13h 15mMultiple Airlines

Deal found 12/16

$388

Wed 1/145:30 amBOS - OPO

2 stops24h 45mAir Canada

Tue 1/276:00 amOPO - BOS

2 stops35h 12mAir Canada

Deal found 12/16

$408

Fri 1/1610:45 pmBOS - OPO

1 stop13h 15mTAP AIR PORTUGAL

Tue 1/276:55 amOPO - BOS

1 stop12h 50mTAP AIR PORTUGAL

Deal found 12/16

$399

Sun 1/255:30 amBOS - OPO

2 stops24h 40mMultiple Airlines

Tue 2/39:10 amOPO - BOS

2 stops16h 10mMultiple Airlines

Deal found 12/17

$393

Sun 1/2510:05 amBOS - OPO

2 stops19h 25mDelta

Tue 2/35:00 amOPO - BOS

2 stops19h 10mDelta

Deal found 12/17

$402

One-way flights from Boston to Porto
Search for one-way flight options from Boston to Porto. Find affordable one-way fares based on user searches. Data last updated December 18, 2025.

Mon 3/1611:40 pmBOS - OPO

1 stop28h 30mMultiple Airlines

Deal found 12/16

$256

Sat 2/216:05 pmBOS - OPO

2 stops33h 15mMultiple Airlines

Deal found 12/15

$264

Sun 3/16:05 pmBOS - OPO

1 stop17h 55mTAP AIR PORTUGAL

Deal found 12/17

$265

Wed 1/146:05 pmBOS - OPO

1 stop17h 55mTAP AIR PORTUGAL

Deal found 12/15

$275

Wed 1/149:25 pmBOS - OPO

2 stops16h 10mMultiple Airlines

Deal found 12/15

$277

Sun 3/14:22 pmBOS - OPO

3 stops47h 53mMultiple Airlines

Deal found 12/17

$278

Wed 3/46:05 pmBOS - OPO

1 stop17h 55mTAP AIR PORTUGAL

Deal found 12/16

$280

Wed 1/76:05 pmBOS - OPO

1 stop14h 00mTAP AIR PORTUGAL

Deal found 12/15

$289

Mon 1/59:25 pmBOS - OPO

1 stop8h 45mAzores Airlines

Deal found 12/16

$290

Fri 2/279:25 pmBOS - OPO

2 stops44h 45mMultiple Airlines

Deal found 12/17

$292

Find flight deals from Boston to Porto

Most accurate provider	Gotogate 3 stars
Most trusted provider	Gotogate 3 stars
Round-trip from	$384 (SWISS)
One-way from	$256 (Kiwi.com)
Popular in	June
Cheapest in	November
Average price	$659
Good round-trip deal	$562 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. 15% potential increase in price ($117 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

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

Fly from

Fly to

Route

Depart

Return

Price

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 3/11

7:30 pm-10:30 am

1 stop11h 00m

Porto

Wed 3/18

4:10 pm-2:20 pm

1 stop26h 10m

$395

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 1/13

8:20 pm-10:30 am

1 stop33h 10m

Porto

Thu 1/29

5:00 am-1:30 pm

1 stop13h 30m

$397

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 1/20

6:05 pm-3:00 pm

1 stop15h 55m

Porto

Sun 2/1

8:00 pm-2:35 pm

1 stop23h 35m

$399

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 3/11

9:40 pm-1:15 pm

1 stop11h 35m

Porto

Tue 3/24

12:05 pm-9:20 pm

1 stop13h 15m

$407

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 2/1

10:05 am-10:30 am

2 stops19h 25m

Porto

Tue 2/10

11:25 am-10:21 pm

2 stops15h 56m

$409

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 2/2

4:45 pm-7:40 am

1 stop9h 55m

Porto

Tue 4/28

8:40 pm-4:10 pm

1 stop24h 30m

$411

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 2/2

4:45 pm-7:40 am

1 stop9h 55m

Porto

Tue 4/28

8:20 am-9:05 pm

2 stops17h 45m

$413

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 3/17

2:15 pm-9:30 am

2 stops15h 15m

Porto

Mon 3/23

12:30 pm-2:10 pm

1 stop29h 40m

$413

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 2/10

4:15 pm-2:45 pm

1 stop17h 30m

Porto

Tue 2/24

7:25 pm-10:37 pm

2 stops32h 12m

$417

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 2/1

8:40 pm-12:50 pm

1 stop11h 10m

Porto

Tue 4/28

6:20 am-5:40 pm

1 stop16h 20m

$418

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 21 results

Compare providers for flights from Boston to Porto

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Porto in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
Cheapflightsfares	Price Accuracy3 stars	Trust Score*2 stars
JustAirTicket	Price Accuracy-	Trust Score*1 star
Ovago	Price Accuracy2 stars	Trust Score*2 stars
Cheapfaremart	Price Accuracy-	Trust Score*1 star
Gotogate	Price Accuracy3 stars	Trust Score*3 stars
SmartFares	Price Accuracy1 star	Trust Score*1 star

*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

Prices

Delays

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

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, October is the cheapest month in which you can book a flight from Boston to Porto (average of $369). Flying from Boston to Porto in June is currently the most expensive (average of $555). 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 OPO?

It’s optimal to fly from Boston to Porto in the morning. By choosing this option you can save up to 49% on the cost of your flight, compared to a flight in the evening.

Reviews of airlines servicing Porto

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

8,006 reviews

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

8,006 reviews

Delta

7.9

Good

8,006 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Azores Airlines

7.5

Good

88 reviews

Delta

7.9

Good

8,006 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

United Airlines

7.4

Good

9,091 reviews

Delta

7.9

Good

8,006 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

TAP AIR PORTUGAL

7.2

Good

2,091 reviews

Delta

7.9

Good

8,006 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Iberia

7.0

Good

3,050 reviews

Delta

7.9

Good

8,006 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Related info for your journey

How popular is this Boston to Porto flight route?
Flights from Boston Logan Intl to Porto have been viewed 22 times in the past calendar month.
How long is the flight from Boston to Porto?
KLM, Delta, and TAP AIR PORTUGAL can get you from Boston to Porto in just under 11h. Your travel time can differ by up to 22h 10m. 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 47% 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 Azores Airlines from $228 and Delta from $236 one-way.
What are the cheapest flights from Boston to Porto?
Looking at all options, your cheapest flight can be booked for $258. While the most popular route (Boston Logan Intl - Porto) can be booked for $349 on average, our data indicates $531 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 $15 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 $30 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, October is the cheapest month in which you can book a flight from Boston to Porto (average of $369). Flying from Boston to Porto in June is currently the most expensive (average of $555). 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

Aveiro

Arcos de Valdevez

Coimbra

Vila Nova de Gaia

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Alternative routes for Boston to Porto

Other flights to Porto

Top 10 airlines flying from Boston to Porto

Airline	Cheapest	Average	Flexibility	On-time
SWISS	Cheapest$338	Average$609	FlexibilityNo cancel fee	On-time79%
Iberia	Cheapest$373	Average$575	FlexibilityNo cancel fee	On-time77%
British Airways	Cheapest$374	Average$644	FlexibilityNo cancel fee	On-time70%
KLM	Cheapest$394	Average$593	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$421	Average$693	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$426	Average$779	FlexibilityNo cancel fee	On-timeN/A
Air Canada	Cheapest$434	Average$670	FlexibilityNo cancel fee	On-time67%
Lufthansa	Cheapest$449	Average$637	FlexibilityNo cancel fee	On-time76%
Azores Airlines	Cheapest$456	Average$604	FlexibilityNo cancel fee	On-time74%
American Airlines	Cheapest$466	Average$751	FlexibilityNo cancel fee	On-time71%

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$256+ 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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapflights Tip: The best prices from Boston Logan Intl to Porto are usually found in November or February, 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 PortoExplore 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 December 18, 2025.

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 December 18, 2025.

Find flight deals from Boston to Porto

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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 December.

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.

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?

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

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

How often are flights from Boston to Porto delayed?

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

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

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

What’s the top layover airport for flights from Boston to Porto?

What’s the cheapest layover airport for flights from Boston to Porto?

What’s the fastest layover option from Boston to Porto?

Which airport typically offers the quickest layover for flights from Boston to Porto?

Reviews of airlines servicing Porto

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.

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?

How long is the flight from Boston to Porto?

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

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

What are the cheapest flights from Boston to Porto?

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

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

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

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

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

How can I find direct flights from Boston to Porto?

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

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

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Alternative routes for Boston to Porto

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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 December 18, 2025.