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Cheap flights from Boston to Porto from $242

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 Porto departing on 11/8. 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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0 bags

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Cheap round-trip flights

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American Airlines Logo
12:16 pm - 7:40 amBOS-OPO
14h 24m2 stops
American Airlines Logo
12:25 pm - 10:49 pmOPO-BOS
15h 24m2 stops
$413American Airlines
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Wed, Feb 11 - Wed, Feb 25
Air Canada Logo
5:30 am - 11:10 amBOS-OPO
25h 40m2 stops
Air Canada Logo
11:05 am - 7:12 pmOPO-BOS
37h 07m2 stops
$414Air Canada
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Sun, Mar 8 - Tue, Apr 7
Multiple Airlines Logo
5:30 am - 11:15 amBOS-OPO
24h 45m2 stops
Multiple Airlines Logo
12:30 pm - 1:25 pmOPO-BOS
29h 55m1 stop
$415Multiple Airlines
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Tue, Nov 25 - Tue, Dec 2
TAP AIR PORTUGAL Logo
10:45 pm - 10:05 pmBOS-OPO
18h 20m1 stop
TAP AIR PORTUGAL Logo
8:00 pm - 2:35 pmOPO-BOS
23h 35m1 stop
$418TAP AIR PORTUGAL
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Thu, Nov 13 - Sun, Nov 16
United Airlines Logo
9:53 am - 9:45 amBOS-OPO
18h 52m2 stops
United Airlines Logo
12:05 pm - 11:59 pmOPO-BOS
16h 54m2 stops
$419United Airlines
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Mon, Oct 13 - Wed, Oct 22
Lufthansa Logo
8:05 pm - 11:20 pmBOS-OPO
22h 15m1 stop
Lufthansa Logo
6:00 am - 4:00 pmOPO-BOS
15h 00m1 stop
$424Lufthansa
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Tue, Oct 14 - Tue, Oct 21
TAP AIR PORTUGAL Logo
11:45 pm - 1:15 pmBOS-OPO
9h 30m1 stop
TAP AIR PORTUGAL Logo
9:00 am - 2:20 pmOPO-BOS
10h 20m1 stop
$428TAP AIR PORTUGAL
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Thu, Mar 12 - Tue, Apr 7
United Airlines Logo
7:54 pm - 9:30 amBOS-OPO
9h 36m1 stop
United Airlines Logo
6:00 am - 1:25 pmOPO-BOS
12h 25m1 stop
$430United Airlines
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Sun, Oct 26 - Sat, Nov 15
Lufthansa Logo
8:40 pm - 12:50 pmBOS-OPO
11h 10m1 stop
Lufthansa Logo
6:15 am - 6:35 pmOPO-BOS
17h 20m1 stop
$431Lufthansa
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Mon, Nov 3 - Mon, Nov 10
Iberia Logo
4:45 pm - 4:00 pmBOS-OPO
18h 15m1 stop
Iberia Logo
8:40 pm - 3:15 pmOPO-BOS
23h 35m1 stop
$435Iberia
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Fri, Dec 5 - Mon, Dec 8

Lufthansa flights from Boston to Porto

Our best Lufthansa deals on Boston to Porto flight tickets
Lufthansa
Oct 14
BOS8:05 pmBoston Logan Intl
22h 15m
1 stop
OPO11:20 pmPorto
Oct 21
OPO6:15 amPorto
16h 25m
1 stop
BOS5:40 pmBoston Logan Intl
$417
Find similar
Lufthansa
Oct 8
BOS10:00 pmBoston Logan Intl
12h 45m
1 stop
OPO3:45 pmPorto
Oct 15
OPO6:15 amPorto
16h 25m
1 stop
BOS5:40 pmBoston Logan Intl
$420
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Lufthansa
Oct 14
BOS8:05 pmBoston Logan Intl
22h 15m
1 stop
OPO11:20 pmPorto
Oct 21
OPO6:00 amPorto
15h 00m
1 stop
BOS4:00 pmBoston Logan Intl
$424
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American Airlines flights from Boston to Porto

Our best American Airlines deals on Boston to Porto flight tickets
American Airlines
Feb 11
BOS12:16 pmBoston Logan Intl
14h 24m
2 stops
OPO7:40 amPorto
Feb 25
OPO12:25 pmPorto
15h 24m
2 stops
BOS10:49 pmBoston Logan Intl
$413
Find similar
American Airlines
Feb 5
BOS3:35 pmBoston Logan Intl
15h 10m
2 stops
OPO11:45 amPorto
Feb 10
OPO8:20 amPorto
11h 55m
1 stop
BOS3:15 pmBoston Logan Intl
$429
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momondo 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, momondo users made 832,500 searches. Data last updated October 1, 2025.
Use the filters below to find and compare flights from Boston to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 2/11

12:16 pm-7:40 am

2 stops14h 24m

Porto

Wed 2/25

12:25 pm-10:49 pm

2 stops15h 24m

$413

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 3/8

5:30 am-11:10 am

2 stops25h 40m

Porto

Tue 4/7

11:05 am-7:12 pm

2 stops37h 07m

$414

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 11/25

5:30 am-11:15 am

2 stops24h 45m

Porto

Tue 12/2

12:30 pm-1:25 pm

1 stop29h 55m

$415

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Thu 11/13

10:45 pm-10:05 pm

1 stop18h 20m

Porto

Sun 11/16

8:00 pm-2:35 pm

1 stop23h 35m

$418

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 10/13

9:53 am-9:45 am

2 stops18h 52m

Porto

Wed 10/22

12:05 pm-11:59 pm

2 stops16h 54m

$419

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 10/14

8:05 pm-11:20 pm

1 stop22h 15m

Porto

Tue 10/21

6:00 am-4:00 pm

1 stop15h 00m

$424

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Thu 3/12

11:45 pm-1:15 pm

1 stop9h 30m

Porto

Tue 4/7

9:00 am-2:20 pm

1 stop10h 20m

$428

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 10/26

7:54 pm-9:30 am

1 stop9h 36m

Porto

Sat 11/15

6:00 am-1:25 pm

1 stop12h 25m

$430

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 11/3

8:40 pm-12:50 pm

1 stop11h 10m

Porto

Mon 11/10

6:15 am-6:35 pm

1 stop17h 20m

$431

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Fri 12/5

4:45 pm-4:00 pm

1 stop18h 15m

Porto

Mon 12/8

8:40 pm-3:15 pm

1 stop23h 35m

$435

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 Porto from

How to get the cheapest flight ticket from Boston to Porto

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 Porto?

The month of January is, on average, the cheapest month to fly to Porto from Boston, with most prices found around $530. If you aren’t able to travel during the month of January, then book flights to Porto from Boston during November instead. Flights to Porto in November, while not as cheap as those in January, still average around $556.

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

The cheapest day to depart on your flight to Porto is on a Friday when prices can be found for as low as $705. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $840. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

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

At noon is the cheapest time of day to fly from Boston to Porto when you can find flight prices for as low as $724. Flying to Porto at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $776 on average. Flights to Porto from Boston in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Fly from Boston Logan Intl to Porto for the best Boston Logan Intl - Porto flight prices

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

You are more likely to see cheaper flights to Porto from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $650 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Boston for as low as $622 on momondo.

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

There are 3 cabin classes available to choose from on Boston Logan Intl to Porto 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 Porto flights?

You could potentially save up to 4% on your flight if you consider stops on a Boston to Porto flight.

How have Boston to Porto flight prices changed over time?

As of October 2025, prices for Boston to Porto flights are approximately 9% cheaper when compared to flights at the same time last year.

When to book flights from Boston to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Porto (BOS to OPO) flight deals and tips

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

Best Price Found

$246

Fastest flight time

6h 40m

Direct flights

Mon, Tue, Thu, Sat and Sun

Airports in Porto

1 airport
The best one-way flight to Porto from Boston in the past 72 hours is $246. The best round-trip flight deal from Boston to Porto found on momondo in the last 72 hours is $647.
The fastest flight from Boston to Porto takes 6h 40m
Direct flights go from Boston to Porto on Monday, Tuesday, Thursday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport near Porto: Porto (OPO)
Search flight deals

  • How far is Boston Logan Intl to Porto by plane?

    The straight-line distance from Boston Logan Intl to Porto is 3141.4 mi. A reasonable flight in good conditions will take 6h 40m.

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

    Prices for flights from Boston Logan Intl Airport to Porto Airport are updated daily.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The required travel and health documents for your Porto Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Porto Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

  • What is the most popular airline from Boston to Porto?

Best airlines flying from Boston to Porto

Compare and see reviews for airlines that fly from Boston to Porto with momondo
Airline
Rating
Free Cancellation
Price
SWISSPriceFrom $338Free CancellationRating
7.5
1,754 reviews
Search SWISS flights
IberiaPriceFrom $374Free CancellationRating
7.0
2,966 reviews
Search Iberia flights
British AirwaysPriceFrom $374Free CancellationRating
6.7
7,413 reviews
Search British Airways flights
KLMPriceFrom $394Free CancellationRating
7.8
1,389 reviews
Search KLM flights
United AirlinesPriceFrom $454Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
LufthansaPriceFrom $457Free CancellationRating
6.8
7,443 reviews
Search Lufthansa flights
Air CanadaPriceFrom $459Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
Azores AirlinesPriceFrom $460Free CancellationRating
7.5
78 reviews
Search Azores Airlines flights
American AirlinesPriceFrom $466Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
TAP AIR PORTUGALPriceFrom $501Free CancellationRating
7.1
1,997 reviews
Search TAP AIR PORTUGAL flights

  • TAP AIR PORTUGAL Flights From Boston to Porto

    TAP AIR PORTUGAL operates around 3 flights from Boston to Porto every week. The average price of these flights found in the last 72 hours has been $755, but momondo users have found TAP AIR PORTUGAL deals from Boston to Porto from as low as $501 round-trip. TAP AIR PORTUGAL has been scored 7.1/10 in 1,997 reviews.

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Aveiro
Braga
Matosinhos
Caminha
Esposende
Lamego
Guimarães
Chaves
Espinho
Viseu
Ponte de Lima
Arcos de Valdevez
Pinhao
Santa Maria da Feira
Curia
Penafiel
Mesao Frio
Mira

Why use momondo?

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

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

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

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

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

Once all potential Boston to Porto flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Porto, momondo offers a useful price alert feature which will track prices for flights to Porto from Boston and alert you when they change.

An easier way to manage your Porto trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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