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Cheap flights from Boston to Portugal from $218

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Portugal departing on 5/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Boston to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
11:15 pm - 10:55 am
BOS
-
OPO
6h 40mnonstop
TAP AIR PORTUGAL Logo
6:05 pm - 8:45 pm
OPO
-
BOS
7h 40mnonstop
$319TAP AIR PORTUGAL
Wed, May 6 - Mon, May 11
TAP AIR PORTUGAL Logo
11:15 pm - 10:55 am
BOS
-
OPO
6h 40mnonstop
TAP AIR PORTUGAL Logo
6:05 pm - 8:45 pm
OPO
-
BOS
7h 40mnonstop
$320TAP AIR PORTUGAL
Wed, May 6 - Mon, May 11
TAP AIR PORTUGAL Logo
10:30 pm - 10:10 am
BOS
-
OPO
6h 40mnonstop
TAP AIR PORTUGAL Logo
5:15 pm - 7:55 pm
OPO
-
BOS
7h 40mnonstop
$322TAP AIR PORTUGAL
Mon, Mar 30 - Mon, Apr 13
TAP AIR PORTUGAL Logo
10:30 pm - 10:10 am
BOS
-
OPO
6h 40mnonstop
TAP AIR PORTUGAL Logo
5:15 pm - 7:55 pm
OPO
-
BOS
7h 40mnonstop
$325TAP AIR PORTUGAL
Wed, Apr 1 - Sun, Apr 12
TAP AIR PORTUGAL Logo
10:30 pm - 10:10 am
BOS
-
OPO
6h 40mnonstop
TAP AIR PORTUGAL Logo
6:10 pm - 8:45 pm
OPO
-
BOS
7h 35mnonstop
$329TAP AIR PORTUGAL
Mon, Apr 27 - Wed, May 6
Delta Logo
9:45 pm - 2:55 pm
BOS
-
LIS
12h 10m1 stop
Delta Logo
10:00 am - 10:36 pm
LIS
-
BOS
17h 36m1 stop
$521Delta
Wed, Apr 29 - Thu, May 7
Delta Logo
9:45 pm - 2:55 pm
BOS
-
LIS
12h 10m1 stop
Delta Logo
5:00 am - 4:33 pm
LIS
-
BOS
16h 33m1 stop
$522Delta
Wed, Apr 29 - Tue, May 5
American Airlines Logo
9:20 pm - 6:05 pm
BOS
-
LIS
15h 45m1 stop
American Airlines Logo
11:05 am - 7:07 pm
LIS
-
BOS
13h 02m2 stops
$523American Airlines
Sun, Feb 1 - Mon, Feb 9
Iberia Logo
3:47 pm - 10:30 am
BOS
-
FNC
37h 43m2 stops
Iberia Logo
11:10 am - 7:50 pm
FNC
-
BOS
13h 40m1 stop
$525Iberia
Fri, Feb 20 - Sun, Mar 1
Air Canada Logo
3:35 pm - 1:20 pm
BOS
-
LIS
16h 45m2 stops
Air Canada Logo
11:20 am - 12:12 pm
LIS
-
BOS
29h 52m2 stops
$529Air Canada
Sun, Feb 1 - Sat, Feb 14

Delta flights from Boston to Portugal

Our best Delta deals on Boston to Portugal flight tickets
Delta
Jan 7
BOS1:50 pmBoston Logan Intl
15h 40m
2 stops
OPO10:30 amPorto
Jan 14
OPO6:00 amPorto
17h 55m
1 stop
BOS6:55 pmBoston Logan Intl
$400
Find similar
Delta
Jan 14
BOS1:50 pmBoston Logan Intl
15h 40m
2 stops
OPO10:30 amPorto
Mar 31
OPO6:15 amPorto
17h 12m
2 stops
BOS6:27 pmBoston Logan Intl
$409
Find similar
Delta
Jan 13
BOS8:20 pmBoston Logan Intl
33h 10m
1 stop
OPO10:30 amPorto
Apr 7
OPO6:15 amPorto
12h 18m
1 stop
BOS1:33 pmBoston Logan Intl
$421
Find similar

Air Canada flights from Boston to Portugal

Our best Air Canada deals on Boston to Portugal flight tickets
Air Canada
Feb 1
BOS5:30 amBoston Logan Intl
26h 50m
2 stops
LIS1:20 pmLisbon Humberto Delgado
Feb 12
LIS11:20 amLisbon Humberto Delgado
27h 42m
2 stops
BOS10:02 amBoston Logan Intl
$529
Find similar
Air Canada
Apr 11
BOS5:30 amBoston Logan Intl
24h 35m
2 stops
LIS11:05 amLisbon Humberto Delgado
Apr 23
LIS11:25 amLisbon Humberto Delgado
32h 27m
1 stop
BOS2:52 pmBoston Logan Intl
$558
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated January 2, 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

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 5/6

11:15 pm-10:55 am

Nonstop6h 40m

Porto

Mon 5/11

6:05 pm-8:45 pm

Nonstop7h 40m

$319

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 5/6

11:15 pm-10:55 am

Nonstop6h 40m

Porto

Mon 5/11

6:05 pm-8:45 pm

Nonstop7h 40m

$320

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 3/30

10:30 pm-10:10 am

Nonstop6h 40m

Porto

Mon 4/13

5:15 pm-7:55 pm

Nonstop7h 40m

$322

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 4/1

10:30 pm-10:10 am

Nonstop6h 40m

Porto

Sun 4/12

5:15 pm-7:55 pm

Nonstop7h 40m

$325

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 4/27

10:30 pm-10:10 am

Nonstop6h 40m

Porto

Wed 5/6

6:10 pm-8:45 pm

Nonstop7h 35m

$329

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 4/29

9:45 pm-2:55 pm

1 stop12h 10m

Lisbon Humberto Delgado

Thu 5/7

10:00 am-10:36 pm

1 stop17h 36m

$521

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 4/29

9:45 pm-2:55 pm

1 stop12h 10m

Lisbon Humberto Delgado

Tue 5/5

5:00 am-4:33 pm

1 stop16h 33m

$522

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 2/1

9:20 pm-6:05 pm

1 stop15h 45m

Lisbon Humberto Delgado

Mon 2/9

11:05 am-7:07 pm

2 stops13h 02m

$523

BostonFunchal

BOS - FNC

BOSFNC

Boston Logan Intl

Fri 2/20

3:47 pm-10:30 am

2 stops37h 43m

Funchal Madeira

Sun 3/1

11:10 am-7:50 pm

1 stop13h 40m

$525

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 2/1

3:35 pm-1:20 pm

2 stops16h 45m

Lisbon Humberto Delgado

Sat 2/14

11:20 am-12:12 pm

2 stops29h 52m

$529

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portugal from

How to get the cheapest flight ticket from Boston to Portugal

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Boston is in November. Flight prices, which tend to average around $640, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Portugal from Boston during February instead. Flights to Portugal in February, while not as cheap as those in November, still average around $642.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Monday is the cheapest day to fly to Portugal from Boston. The lowest ticket price found for a Monday departure recently was $785. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Friday, with ticket prices averaging around $884.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is in the evening. Flights from Boston to Portugal during this time can be as low as $811. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $837 per ticket.

What is the cheapest Boston Logan Intl to Portugal flight route?

Fly from Boston Logan Intl to Lisbon Humberto Delgado for the best Boston Logan Intl - Portugal flight prices

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $776 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Boston for as low as $704 on momondo.

What cabin class options are available on Boston Logan Intl to Portugal flights?

There are 4 cabin classes available to choose from on Boston Logan Intl to Portugal flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Boston to Portugal flights?

No. A direct flight is the cheapest option for a flight between Boston to Portugal.

Cheap Boston to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Portugal

Best Price Found

$279

Fastest flight time

4h 55m

Direct flights

Mon, Wed, Thu, Fri, Sat and Sun

Airports in Portugal

99 airports
The best one-way flight to Portugal from Boston in the past 72 hours is $279. The best round-trip flight deal from Boston to Portugal found on momondo in the last 72 hours is $516.
The fastest flight from Boston to Portugal takes 4h 55m
Direct flights go from Boston to Portugal on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. Airlines offering direct flights are: TAP AIR PORTUGAL and Azores Airlines.
There are 99 airports in Portugal. From Boston there are direct flights to Ponta Delgada Nordela (PDL).
Search flight deals

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Portugal?

    Prices for flights from Boston Logan Intl Airport to Portugal were last updated today.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Portugal?

  • How old do you have to be to fly from Boston Logan Intl Airport to Portugal?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Boston Logan Intl Airport to Portugal.

  • What documentation or ID do you need to fly to Portugal?

    The travel and health documents required for your trip to Portugal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Boston to Portugal?

Best airlines flying from Boston to Portugal

Compare and see reviews for airlines that fly from Boston to Portugal with momondo
Airline
Rating
Free Cancellation
Price
VuelingPriceFrom $165Free CancellationRating
7.1
1,221 reviews
Search Vueling flights
LEVELPriceFrom $232Free CancellationRating
0.0
Search LEVEL flights
PLAYPriceFrom $328Free CancellationRating
7.0
103 reviews
Search PLAY flights
SWISSPriceFrom $338Free CancellationRating
7.5
1,832 reviews
Search SWISS flights
IberiaPriceFrom $343Free CancellationRating
7.0
3,058 reviews
Search Iberia flights
British AirwaysPriceFrom $374Free CancellationRating
6.7
7,640 reviews
Search British Airways flights
Scandinavian AirlinesPriceFrom $381Free CancellationRating
7.4
1,629 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $386Free CancellationRating
7.1
593 reviews
Search Icelandair flights
American AirlinesPriceFrom $393Free CancellationRating
7.2
11,075 reviews
Search American Airlines flights
KLMPriceFrom $394Free CancellationRating
7.7
1,435 reviews
Search KLM flights

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Portugal?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Boston to Portugal. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Boston to Portugal with flexible booking policies on momondo?

All flight searches from Boston to Portugal on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Boston to Portugal?

momondo helps you find the best flight between Boston and Portugal by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Boston to Portugal right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Boston to Portugal flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to Portugal

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