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$288+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — LIS
מאי 28 — יוני 41
ה' 5/28
ה' 6/4
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 אפריל 28, 2026.

This Gotogate deal was found by Cheapflights users on 4/23. 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.
ב' 5/49:40 pm
BOS
-
OPO
1 stop32h 45m
SWISS
ד' 5/136:45 pm
OPO
-
BOS
1 stop30h 10m
SWISS
Deal found 4/23$615
This Air Canada deal was found by Cheapflights users on 4/23. 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.
ד' 10/149:35 am
BOS
-
OPO
2 stops16h 25m
Air Canada
ד' 10/2112:45 pm
OPO
-
BOS
1 stop13h 42m
Air Canada
Deal found 4/23$618
This Justfly.com deal was found by Cheapflights users on 4/23. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ד' 7/2210:40 am
BOS
-
OPO
1 stop15h 20m
Multiple Airlines
ד' 11/117:20 pm
OPO
-
BOS
1 stop30h 00m
Multiple Airlines
Deal found 4/23$619
This KAYAK deal was found by Cheapflights users on 4/23. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ד' 4/2911:17 am
BOS
-
OPO
2 stops41h 03m
Austrian Airlines
ג' 5/51:30 pm
OPO
-
BOS
1 stop29h 20m
Austrian Airlines
Deal found 4/23$620
This Gotogate deal was found by Cheapflights users on 4/25. 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.
ב' 4/273:35 pm
BOS
-
OPO
2 stops14h 40m
Air Canada
ד' 5/66:00 am
OPO
-
BOS
2 stops40h 45m
Air Canada
Deal found 4/25$621
This FlightHub deal was found by Cheapflights users on 4/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ד' 10/149:35 am
BOS
-
OPO
2 stops16h 25m
Multiple Airlines
ד' 10/287:20 pm
OPO
-
BOS
2 stops42h 17m
Multiple Airlines
Deal found 4/26$622
This Kiwi.com deal was found by Cheapflights users on 4/24. 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.
ו' 5/15:20 pm
BOS
-
OPO
1 stop15h 50m
SWISS
ו' 5/88:40 am
OPO
-
BOS
1 stop11h 30m
SWISS
Deal found 4/24$623
This LEVEL deal was found by Cheapflights users on 4/23. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
א' 7/511:35 pm
BOS
-
OPO
1 stop27h 25m
LEVEL
ד' 9/910:00 pm
OPO
-
BOS
1 stop28h 15m
LEVEL
Deal found 4/23$624
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
ב' 5/46:50 pm
BOS
-
FAO
2 stops17h 45m
Multiple Airlines
ג' 5/196:45 pm
FAO
-
BOS
1 stop31h 20m
Multiple Airlines
Deal found 4/26$624
This Kiwi.com deal was found by Cheapflights users on 4/23. 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.
ה' 4/305:20 pm
BOS
-
OPO
1 stop13h 05m
SWISS
ג' 5/58:40 am
OPO
-
BOS
1 stop11h 30m
SWISS
Deal found 4/23$625
This Gotogate deal was found by Cheapflights users on 4/26. 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.
ב' 9/215:50 am
BOS
-
OPO
1 stop20h 10m
Multiple Airlines
ד' 10/146:45 pm
OPO
-
BOS
1 stop25h 25m
Multiple Airlines
Deal found 4/26$626
This United Airlines deal was found by Cheapflights users on 4/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
א' 11/156:00 am
BOS
-
OPO
2 stops22h 30m
United Airlines
ד' 12/212:30 pm
OPO
-
BOS
1 stop29h 40m
United Airlines
Deal found 4/27$628

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 אפריל 28, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$618
(Air Canada)

One-way from

$288
(Mytrip)

Popular in

June

Cheapest in

February

Average price

$865

Good round-trip deal

$597 or less

Good one-way deal

$275 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. 15% potential increase in price ($144 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 אפריל 28, 2026.
Use the filters below to find and compare flights from Boston to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

ב' 9/28

7:30 am-9:45 am

1 stop21h 15m

Porto

ה' 10/8

11:50 am-9:50 am

1 stop27h 00m

$631

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

ג' 8/11

3:35 pm-7:00 am

1 stop10h 25m

Porto

ה' 8/20

11:50 am-12:47 pm

2 stops29h 57m

$635

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

א' 7/5

5:45 am-6:50 am

1 stop20h 05m

Porto

ד' 8/19

2:25 pm-2:41 pm

1 stop29h 16m

$648

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

א' 10/4

11:50 pm-4:10 pm

1 stop11h 20m

Porto

א' 10/11

8:35 am-10:05 pm

1 stop18h 30m

$691

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

ד' 8/12

7:35 am-9:45 am

1 stop21h 10m

Porto

א' 8/23

12:15 pm-9:50 am

1 stop26h 35m

$691

BostonFaro

BOS - FAO

BOSFAO

Boston Logan Intl

ד' 5/13

4:35 pm-7:10 am

1 stop33h 35m

Faro

ג' 5/19

8:15 pm-1:10 pm

1 stop21h 55m

$737

BostonFaro

BOS - FAO

BOSFAO

Boston Logan Intl

ד' 5/13

4:35 pm-7:10 am

1 stop33h 35m

Faro

ב' 5/18

9:45 pm-4:25 pm

1 stop23h 40m

$737

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

ה' 8/20

11:35 pm-9:30 pm

1 stop16h 55m

Lisbon Humberto Delgado

ש' 9/5

7:20 pm-10:05 pm

1 stop31h 45m

$745

BostonFaro

BOS - FAO

BOSFAO

Boston Logan Intl

ב' 5/4

7:00 am-2:30 pm

2 stops26h 30m

Faro

ג' 5/19

11:40 am-10:18 am

2 stops27h 38m

$762

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

ב' 7/6

9:30 am-7:00 am

2 stops16h 30m

Porto

ב' 8/31

9:00 am-7:16 pm

2 stops15h 16m

$799

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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

The best time to book flights from Boston to Portugal is 42 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, November is the cheapest month in which you can book a flight from Boston to Portugal (average of $574). Flying from Boston to Portugal in May is currently the most expensive (average of $970). 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 אפריל 28, 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 אפריל 28, 2026.

The most flights from BOS to PT0 are scheduled on a Monday (10 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (9 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 134 minutes.

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

Historically, flights departing in the evening 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 Tuesday 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 אפריל 28, 2026.
Peruse reviews from past customers who have flown with Delta,Air France, andUnited 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
7.9
Good
8,463 reviews

Comfort

7.9

Overall

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Crew

8.5

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
8,463 reviews
Delta
7.9
Good
8,463 reviews

Comfort

7.9

Overall

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Crew

8.5

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
1,580 reviews
Delta
7.9
Good
8,463 reviews

Comfort

7.9

Overall

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Crew

8.5

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
9,671 reviews
Delta
7.9
Good
8,463 reviews

Comfort

7.9

Overall

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Crew

8.5

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
7.3
Good
98 reviews
Delta
7.9
Good
8,463 reviews

Comfort

7.9

Overall

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Crew

8.5

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
2,223 reviews
Delta
7.9
Good
8,463 reviews

Comfort

7.9

Overall

7.9

Food

7.2

Boarding

8.1

Entertainment

7.8

Crew

8.5

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 198 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 16h 55m. Fly via United Airlines, KLM, or LEVEL to get the fastest option. Boston and Portugal are separated by a distance of 3182 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 Iberia and Air Canada, 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 JetBlue (93%), Emirates (92%) or airBaltic (80%) 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 $1,355, our data indicates the cheapest price to be $340. The most popular route (Boston Logan Intl - Lisbon Humberto Delgado), is priced around $477.

  • 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, November is the cheapest month in which you can book a flight from Boston to Portugal (average of $574). Flying from Boston to Portugal in May is currently the most expensive (average of $970). 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 אפריל 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$219Average$472FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$248Average$630FlexibilityNo cancel feeOn-time79%
IberiaCheapest$260Average$541FlexibilityNo cancel feeOn-time77%
Azores AirlinesCheapest$311Average$799FlexibilityNo cancel feeOn-time74%
British AirwaysCheapest$369Average$648FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$370Average$468FlexibilityNo cancel feeOn-time76%
PLAYCheapest$370Average$396FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$378Average$628FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$380Average$610FlexibilityNo cancel feeOn-time69%
KLMCheapest$394Average$812FlexibilityNo cancel feeOn-time75%

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